Pub Date : 2023-10-09DOI: 10.1080/21650373.2023.2263447
Lu Jiang, Pengjun Li, Wenjing Wang, Yu Zhang, Zhu Li
AbstractMicrobial-induced carbonate precipitation (MICP) technology has gained significant traction as an eco-friendly, cost-effective, and intelligent self-healing method for concrete cracks. The harsh service environment and high alkalinity of cement matrices have posed a significant challenge to the survival and growth of bacteria, which is crucial for the success of MICP technologies in concrete components. This article aims to present an up-to-date overview of the current research status of self-healing concrete cracks utilizing MICP technology. Specifically, it comprehensively reviews the selection of mineralization repair systems, encompassing repair mechanisms, effects, processes, nutrient addition sequences, and carrier selection. Furthermore, various characterization methods for evaluating the self-healing ability of concrete are explored, accompanied by an in-depth analysis of practical applications of self-healing concrete. Finally, this paper highlights the pressing issues facing this technology while outlining promising directions for future advancement.Keywords: MICPself-healing concretecarriercharacterizationapplications Author contributionsLu Jiang: methodology, investigation, conceptualization. Pengjun Li: writing original draft. Wenjing Wang: writing-review and editing, funding acquisition. Yu Zhang: writing-review and editing. Zhu Li: supervision, resources, investigation.Additional informationFundingFunding was provided by the National Natural Science Foundation of China (Nos. 52208258 and 52078473) and Natural Science Foundation of Ningxia Hui Autonomous Region, China (Nos. 2023AAC05011 and 2022AAC03072).
{"title":"A self-healing method for concrete cracks based on microbial-induced carbonate precipitation: bacteria, immobilization, characterization, and application","authors":"Lu Jiang, Pengjun Li, Wenjing Wang, Yu Zhang, Zhu Li","doi":"10.1080/21650373.2023.2263447","DOIUrl":"https://doi.org/10.1080/21650373.2023.2263447","url":null,"abstract":"AbstractMicrobial-induced carbonate precipitation (MICP) technology has gained significant traction as an eco-friendly, cost-effective, and intelligent self-healing method for concrete cracks. The harsh service environment and high alkalinity of cement matrices have posed a significant challenge to the survival and growth of bacteria, which is crucial for the success of MICP technologies in concrete components. This article aims to present an up-to-date overview of the current research status of self-healing concrete cracks utilizing MICP technology. Specifically, it comprehensively reviews the selection of mineralization repair systems, encompassing repair mechanisms, effects, processes, nutrient addition sequences, and carrier selection. Furthermore, various characterization methods for evaluating the self-healing ability of concrete are explored, accompanied by an in-depth analysis of practical applications of self-healing concrete. Finally, this paper highlights the pressing issues facing this technology while outlining promising directions for future advancement.Keywords: MICPself-healing concretecarriercharacterizationapplications Author contributionsLu Jiang: methodology, investigation, conceptualization. Pengjun Li: writing original draft. Wenjing Wang: writing-review and editing, funding acquisition. Yu Zhang: writing-review and editing. Zhu Li: supervision, resources, investigation.Additional informationFundingFunding was provided by the National Natural Science Foundation of China (Nos. 52208258 and 52078473) and Natural Science Foundation of Ningxia Hui Autonomous Region, China (Nos. 2023AAC05011 and 2022AAC03072).","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135094086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-09DOI: 10.1080/21650373.2023.2258500
Shuang Wu, Changzai Ren, Yunan Sun, Wenlong Wang
AbstractYe’elimite is the primary mineral component in calcium sulfoaluminate cements and is responsible for their early hydraulic reactivity. Herein, ye’elimite was synthesized using a novel method with CaSO4 as the sole CaO source to achieve high purity. Stoichiometric ye’elimite and iron-bearing ye’elimite were synthesized, with the highest purity obtained through sintering at 1250°C for 4 h. The crystal structure of iron-bearing ye’elimite was represented through dynamical disordering of the SO4 tetrahedron and Ca atom with the space group I4¯3m. Moreover, the early hydration behaviors of stoichiometric ye’elimite and iron-bearing ye’elimite reacting with and without gypsum were studied. In the absence of gypsum, stoichiometric ye’elimite reacts faster than iron-bearing ye’elimite. However, in the presence of gypsum, the hydration of the former is faster than that of the latter and the hydration rates of both these minerals are higher than those observed in the absence of gypsum.Keywords: stoichiometric ye’elimiteiron-bearing ye’elimitesolid-state synthesiscrystal structurehydration Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Additional informationFundingThis work was supported by Shandong Provincial Key Research and Development Project (2022CXGC010701), State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering Fund (2022-K51), and Shandong Provincial Science and Technology SMEs Innovation Capacity Improvement Project (2022TSGC2016).
{"title":"Synthesis, structure, and hydration of stoichiometric ye’elimite and iron-bearing ye’elimite","authors":"Shuang Wu, Changzai Ren, Yunan Sun, Wenlong Wang","doi":"10.1080/21650373.2023.2258500","DOIUrl":"https://doi.org/10.1080/21650373.2023.2258500","url":null,"abstract":"AbstractYe’elimite is the primary mineral component in calcium sulfoaluminate cements and is responsible for their early hydraulic reactivity. Herein, ye’elimite was synthesized using a novel method with CaSO4 as the sole CaO source to achieve high purity. Stoichiometric ye’elimite and iron-bearing ye’elimite were synthesized, with the highest purity obtained through sintering at 1250°C for 4 h. The crystal structure of iron-bearing ye’elimite was represented through dynamical disordering of the SO4 tetrahedron and Ca atom with the space group I4¯3m. Moreover, the early hydration behaviors of stoichiometric ye’elimite and iron-bearing ye’elimite reacting with and without gypsum were studied. In the absence of gypsum, stoichiometric ye’elimite reacts faster than iron-bearing ye’elimite. However, in the presence of gypsum, the hydration of the former is faster than that of the latter and the hydration rates of both these minerals are higher than those observed in the absence of gypsum.Keywords: stoichiometric ye’elimiteiron-bearing ye’elimitesolid-state synthesiscrystal structurehydration Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Additional informationFundingThis work was supported by Shandong Provincial Key Research and Development Project (2022CXGC010701), State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering Fund (2022-K51), and Shandong Provincial Science and Technology SMEs Innovation Capacity Improvement Project (2022TSGC2016).","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135141988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-04DOI: 10.1080/21650373.2023.2264284
Ayman Ababneh, Faris Matalkah, Ruba Aqel
AbstractThe poor reactivity is the major limitation of the use of high replacement levels of volcanic tuff in concrete mixtures. The primary focus of this study is to develop a systematic methodology to identify an effective activation technique that enhances the reactivity of volcanic tuff for its application in large-volume concrete applications. Realizing the application of low-reactivity volcanic tuffin cement mortars, various activation methods such as dry-milling, wet-milling, and calcination have been used to improve the reactivity of raw volcanic tuff powder. Practical size distribution, specific surface area, XRD, TG/DTA, SEM, and Chappelle test were employed to assess the chemical and physical changes in the raw volcanic tuff particles after performing different activation methods. Mortars with 50% replacement are characterized by measuring compressive strength, strength activity index (SAI), mass loss, and residual strength after exposure to elevated temperatures, XRD, TGA/DTA, and SEM of all mortar mixes were investigated. The results showed that the compressive strength of specimens with 50% replacement of volcanic tuff which was activated by dry-milling, wet-milling, and calcination after curing for seven days, could reach 116%, 98%, and 77% of that of control specimens, respectively. Mixtures containing dry-milling volcanic tuff demonstrated optimal results in both compressive strength values and strength activity index. The results revealed that the activated volcanic tuff improved the mechanical properties of high-volume cement-volcanic tuff blendes due to effective physical filling led to denser microstructure and improving the pozzolanic reaction led to the production of higher amounts of Calcium-Silicate-Hydrate.Keywords: Volcanic tuffactivationcementwet millingcalcination Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors thankfully acknowledge the financial assistance from the Deanship of Scientific Research at Jordan University of Science and Technology under grant number 2021/383.
{"title":"Pre-treatment of volcanic tuff for use in high volume cement replacement","authors":"Ayman Ababneh, Faris Matalkah, Ruba Aqel","doi":"10.1080/21650373.2023.2264284","DOIUrl":"https://doi.org/10.1080/21650373.2023.2264284","url":null,"abstract":"AbstractThe poor reactivity is the major limitation of the use of high replacement levels of volcanic tuff in concrete mixtures. The primary focus of this study is to develop a systematic methodology to identify an effective activation technique that enhances the reactivity of volcanic tuff for its application in large-volume concrete applications. Realizing the application of low-reactivity volcanic tuffin cement mortars, various activation methods such as dry-milling, wet-milling, and calcination have been used to improve the reactivity of raw volcanic tuff powder. Practical size distribution, specific surface area, XRD, TG/DTA, SEM, and Chappelle test were employed to assess the chemical and physical changes in the raw volcanic tuff particles after performing different activation methods. Mortars with 50% replacement are characterized by measuring compressive strength, strength activity index (SAI), mass loss, and residual strength after exposure to elevated temperatures, XRD, TGA/DTA, and SEM of all mortar mixes were investigated. The results showed that the compressive strength of specimens with 50% replacement of volcanic tuff which was activated by dry-milling, wet-milling, and calcination after curing for seven days, could reach 116%, 98%, and 77% of that of control specimens, respectively. Mixtures containing dry-milling volcanic tuff demonstrated optimal results in both compressive strength values and strength activity index. The results revealed that the activated volcanic tuff improved the mechanical properties of high-volume cement-volcanic tuff blendes due to effective physical filling led to denser microstructure and improving the pozzolanic reaction led to the production of higher amounts of Calcium-Silicate-Hydrate.Keywords: Volcanic tuffactivationcementwet millingcalcination Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors thankfully acknowledge the financial assistance from the Deanship of Scientific Research at Jordan University of Science and Technology under grant number 2021/383.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135591646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-03DOI: 10.1080/21650373.2023.2260794
Segundo Shagñay, Asunción Bautista, Francisco Velasco, Irene Ramón-Álvarez, Manuel Torres-Carrasco
AbstractAlkali-activated slag (AAS) materials are one of the most promising alternatives to ordinary Portland cement (PC), as the AAS curing process does not require thermal activation, unlike the activation of other wastes. In addition, AAS exhibit lower porosity than PC, but experience shrinkage problems that can negatively affect their in-service implementation and durability. Shrinkage can directly impact the mechanical properties of AAS as well as the corrosion protection of steel reinforced structures in environments with chlorides, and be a factor affecting durability. The length change during the curing of these mortars can generate high stresses that are released through the formation of microcracks or cracks in their structure. Cracks can act as preferential diffusion paths for aggressive chloride ions and favor the corrosion of the reinforcement. The aim of the present work is to study the reduction in shrinkage that can be achieved for AAS using five different activators: NaOH 4 M, waterglass (WG) with two different SiO2/Na2O molar ratios (MR) and Na2CO3 solution without and with 10% MgO additions. The results reveal that AAS activated with Na2CO3 shows very reduced microcracking. The addition of expansive MgO completely eliminates microcracking but makes the mortar more porous. In the latter case, the pits become much smaller and potentially less dangerous than the ones appearing in the other studied mortars.HighlightsAlkali-activated slag mortars manufactured in five different ways (Na2O fixed ratio) are tested.Shrinkage behavior of mortars is related to the corrosion of the embedded steel.Cyclic immersions in NaCl favour chloride diffusion and precipitation in reinforced mortars.Pit morphologies are related to Cl- transport through cracks, microcracks or/and porosity.WG (0.8 SiO2/Na2O MR) or Na2CO3 are promising options to activate slag for carbon steel-reinforced mortars.Keywords: Alkali-activated slagshrinkagecrackingdurabilitycorrosionchlorides Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors have been able to carry out the present research thanks to financial support from the Ministerio de Ciencia, Innovación y Universidades of Spain (RTI2018-096428-B-I00 and PID2021-125810OB-C22) and the Madrid Regional Government (Comunidad de Madrid) under the Multiannual UC3M Agreement in the line of “Fostering Young Doctors’ Research” (HORATSO-CS-UC3M) within the context of the V PRICIT (Regional Programme of Research and Technological Innovation).Notes on contributorsSegundo ShagñaySegundo Shagñay: Post-doctoral researcher in Materials Science and Engineering at University Carlos III of Madrid. His work is focused on the study of durability of new ecological materials as alternatives to ordinary Portland cement.Asunción BautistaAsunción Bautista: She is Full Professor at the Materials Science and Engineering Department of University Carlos III of Madrid. Her area
{"title":"Influence of the early-age length change of alkali-activated slag mortars on the corrosion of embedded steel","authors":"Segundo Shagñay, Asunción Bautista, Francisco Velasco, Irene Ramón-Álvarez, Manuel Torres-Carrasco","doi":"10.1080/21650373.2023.2260794","DOIUrl":"https://doi.org/10.1080/21650373.2023.2260794","url":null,"abstract":"AbstractAlkali-activated slag (AAS) materials are one of the most promising alternatives to ordinary Portland cement (PC), as the AAS curing process does not require thermal activation, unlike the activation of other wastes. In addition, AAS exhibit lower porosity than PC, but experience shrinkage problems that can negatively affect their in-service implementation and durability. Shrinkage can directly impact the mechanical properties of AAS as well as the corrosion protection of steel reinforced structures in environments with chlorides, and be a factor affecting durability. The length change during the curing of these mortars can generate high stresses that are released through the formation of microcracks or cracks in their structure. Cracks can act as preferential diffusion paths for aggressive chloride ions and favor the corrosion of the reinforcement. The aim of the present work is to study the reduction in shrinkage that can be achieved for AAS using five different activators: NaOH 4 M, waterglass (WG) with two different SiO2/Na2O molar ratios (MR) and Na2CO3 solution without and with 10% MgO additions. The results reveal that AAS activated with Na2CO3 shows very reduced microcracking. The addition of expansive MgO completely eliminates microcracking but makes the mortar more porous. In the latter case, the pits become much smaller and potentially less dangerous than the ones appearing in the other studied mortars.HighlightsAlkali-activated slag mortars manufactured in five different ways (Na2O fixed ratio) are tested.Shrinkage behavior of mortars is related to the corrosion of the embedded steel.Cyclic immersions in NaCl favour chloride diffusion and precipitation in reinforced mortars.Pit morphologies are related to Cl- transport through cracks, microcracks or/and porosity.WG (0.8 SiO2/Na2O MR) or Na2CO3 are promising options to activate slag for carbon steel-reinforced mortars.Keywords: Alkali-activated slagshrinkagecrackingdurabilitycorrosionchlorides Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors have been able to carry out the present research thanks to financial support from the Ministerio de Ciencia, Innovación y Universidades of Spain (RTI2018-096428-B-I00 and PID2021-125810OB-C22) and the Madrid Regional Government (Comunidad de Madrid) under the Multiannual UC3M Agreement in the line of “Fostering Young Doctors’ Research” (HORATSO-CS-UC3M) within the context of the V PRICIT (Regional Programme of Research and Technological Innovation).Notes on contributorsSegundo ShagñaySegundo Shagñay: Post-doctoral researcher in Materials Science and Engineering at University Carlos III of Madrid. His work is focused on the study of durability of new ecological materials as alternatives to ordinary Portland cement.Asunción BautistaAsunción Bautista: She is Full Professor at the Materials Science and Engineering Department of University Carlos III of Madrid. Her area ","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135739499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-03DOI: 10.1080/21650373.2023.2261061
Zhengcheng Wang, Kai Wu, Songyu Liu, Lei Huang, Xiang Zhang, Mengyao Li
AbstractAn innovative approach involves crafting foamed concrete utilizing alkali residue and GGBS in lieu of a portion of OPC. This study employs laboratory tests and X-ray computed tomography (X-CT) to delve into the microstructural attributes of alkali residue-based foamed concrete (A-FC), evaluating their impact on physical and mechanical traits. Results demonstrate that the behavior of foams in A-FC – deformation, coalescence, or rupture – arises from the interplay of gravity drainage, surface tension drainage, air pressure disparity, and slurry extrusion pressure, leading to diverse pore sizes and shapes. Divergence in macroscopic physical and mechanical characteristics of A-FC primarily stems from significant disparages in compression, thermal, and electrical conductivity, as well as water absorption, between pores and pore walls. Furthermore, during the solidification process, solid particles (CaCO3, AFt, AFm, and Fs) bind together through C–S–H and C–A–H, culminating in a robust skeletal structure and yielding exceptional performance in A-FC.Keywords: alkali residueA-FCX-CTmicrostructure characteristiccompressive strength CRediT authorship contribution statementZhengcheng Wang: Investigation, Data curation, Writing - original draft, Writing - review & editing. Kai Wu: Methodology, Writing - review & editing, Resources. Songyu Liu: Validation, Resources, Methodology, Writing - review & editing. Lei Huang: Data curation. Xiang Zhang: Software. Mengyao Li: Data curation.Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThe study was jointly supported by the National Natural Science Foundation of China (Grant No. 42277146); Science and Technology Project of Jiangsu Traffic Engineering Construction Bureau (7621009140); Graduate Practice Innovation Program in Jiangsu Province, China (Grant No. SJCX23_0074); Fundamental Research Funds for the Central Universities (2242023K40018, 2242023K30057).
{"title":"Correlation between microstructure characteristics and macroscopic behaviors of alkali residue-based foamed concrete","authors":"Zhengcheng Wang, Kai Wu, Songyu Liu, Lei Huang, Xiang Zhang, Mengyao Li","doi":"10.1080/21650373.2023.2261061","DOIUrl":"https://doi.org/10.1080/21650373.2023.2261061","url":null,"abstract":"AbstractAn innovative approach involves crafting foamed concrete utilizing alkali residue and GGBS in lieu of a portion of OPC. This study employs laboratory tests and X-ray computed tomography (X-CT) to delve into the microstructural attributes of alkali residue-based foamed concrete (A-FC), evaluating their impact on physical and mechanical traits. Results demonstrate that the behavior of foams in A-FC – deformation, coalescence, or rupture – arises from the interplay of gravity drainage, surface tension drainage, air pressure disparity, and slurry extrusion pressure, leading to diverse pore sizes and shapes. Divergence in macroscopic physical and mechanical characteristics of A-FC primarily stems from significant disparages in compression, thermal, and electrical conductivity, as well as water absorption, between pores and pore walls. Furthermore, during the solidification process, solid particles (CaCO3, AFt, AFm, and Fs) bind together through C–S–H and C–A–H, culminating in a robust skeletal structure and yielding exceptional performance in A-FC.Keywords: alkali residueA-FCX-CTmicrostructure characteristiccompressive strength CRediT authorship contribution statementZhengcheng Wang: Investigation, Data curation, Writing - original draft, Writing - review & editing. Kai Wu: Methodology, Writing - review & editing, Resources. Songyu Liu: Validation, Resources, Methodology, Writing - review & editing. Lei Huang: Data curation. Xiang Zhang: Software. Mengyao Li: Data curation.Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThe study was jointly supported by the National Natural Science Foundation of China (Grant No. 42277146); Science and Technology Project of Jiangsu Traffic Engineering Construction Bureau (7621009140); Graduate Practice Innovation Program in Jiangsu Province, China (Grant No. SJCX23_0074); Fundamental Research Funds for the Central Universities (2242023K40018, 2242023K30057).","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135695713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractCement production is energy-intensive resulting in the emission of carbon dioxide (CO2) which is responsible for global warming. Rapid surge in the global energy demands needs to pave way for the need for a viable and sustainable alternative to concrete, which not only reduces our dependence on natural resources but also can be a possible alternative to the concrete industry and geopolymer technology can be one such material. Geopolymer technology can use secondary raw materials from the agricultural and industrial waste with alumina-silicate phase in presence of alkali activator for the production of geopolymer concrete. This paper comprehensively summarizes the previous research; along with analysis is carried out to propose descriptive equations to establish the correlation between the mechanical strengths (Compressive strength with Split tensile strength, Flexural strength and Modulus of Elasticity) of geopolymer. Current findings suggest substantial practicality and a possible alternative to cement in the construction industryKeywords: geopolymerfly ashcementconcretestrengthdurability Disclosure statementThere is no conflict of interest regarding the publication of the paper.
{"title":"A comprehensive review on fly ash-based geopolymer: a pathway for sustainable future","authors":"Govind Gaurav, Shreesh Chandra Kandpal, Deepika Mishra, Needhi Kotoky","doi":"10.1080/21650373.2023.2258122","DOIUrl":"https://doi.org/10.1080/21650373.2023.2258122","url":null,"abstract":"AbstractCement production is energy-intensive resulting in the emission of carbon dioxide (CO2) which is responsible for global warming. Rapid surge in the global energy demands needs to pave way for the need for a viable and sustainable alternative to concrete, which not only reduces our dependence on natural resources but also can be a possible alternative to the concrete industry and geopolymer technology can be one such material. Geopolymer technology can use secondary raw materials from the agricultural and industrial waste with alumina-silicate phase in presence of alkali activator for the production of geopolymer concrete. This paper comprehensively summarizes the previous research; along with analysis is carried out to propose descriptive equations to establish the correlation between the mechanical strengths (Compressive strength with Split tensile strength, Flexural strength and Modulus of Elasticity) of geopolymer. Current findings suggest substantial practicality and a possible alternative to cement in the construction industryKeywords: geopolymerfly ashcementconcretestrengthdurability Disclosure statementThere is no conflict of interest regarding the publication of the paper.","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136237255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-15DOI: 10.1080/21650373.2023.2258124
Yifan Gao, Xiaolin Liu, Zhaofeng Li, Jian Zhang
AbstractIn this paper, the industrial solid waste with potential cementitious activity was used to prepare ferrite-belite-rich Portland cement clinker. The changes in solid waste composition, raw meal ratio, calcination temperature, and holding time on the type and content of iron aluminate phase and silicate phase in the clinker were studied. The effects of flue gas desulfurization gypsum on the mechanical properties of clinker, mineral composition, and microstructure of hardened slurry were briefly discussed. In addition, the sustainability of the production of ferrite-belite-rich Portland cement clinker was evaluated by using a life cycle assessment. The analysis results show that: (1) The content of the ferrite phase increased first and then decreased with the increase of calcination temperature, and the content of the silicate phase and ferrite phase increased first and then decreased with the extension of holding time. (2) With the change of calcination temperature, the silicate phase is always cobblestone-like and evenly distributed. The ferrite phase changes from granular or flake to branch dendritic, and finally is swallowed by the liquid phase, filled between the gaps of the silicate phase structure, or attached to the surface of the silicate phase. (3) The Si elements in the clinker are always agglomerated in cobblestone shapes with uneven sizes. With the holding time from 30 min to 60 min, the distribution area of Al and Fe elements in the gaps of silicate phases increased gradually. Some Al and Fe elements are distributed in the area where silicate phase minerals are located. When the holding time is extended to 90 min, Fe and Al elements tend to be randomly distributed. (4) Fe will replace part of Al to form Fe-ettringite, Fe-siliceous hydrogarnet, etc. in the hydration process of C4AF. (5) The use of red mud, carbide slag, and silica fume to produce ferrite-belite-rich Portland cement clinker will reduce carbon emissions by 57.50%.Keywords: Ferrite-belite-rich Portland cement clinkercalcination temperatureholding timemineral compositionmicrostructure AcknowledgmentThe authors acknowledge the support of this work was supported by the Major Scientific and Technological Innovation Projects in Shandong Province, the National Key R&D Program of China and the Key Projects of Natural Science Foundation of Shandong Province.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the Major Scientific and Technological Innovation Projects in Shandong Province [Grants Nos. 2020CXGC011405 and Grants Nos. 2021CXGC010301], the National Key R&D Program of China [Grants Nos. 2022YFB2601900] and the Key Projects of Natural Science Foundation of Shandong Province [No. 2020KE006].
{"title":"Effect of calcination process on ferrite phase and silicate phase of ferrite-belite-rich Portland cement clinker from industrial solid waste","authors":"Yifan Gao, Xiaolin Liu, Zhaofeng Li, Jian Zhang","doi":"10.1080/21650373.2023.2258124","DOIUrl":"https://doi.org/10.1080/21650373.2023.2258124","url":null,"abstract":"AbstractIn this paper, the industrial solid waste with potential cementitious activity was used to prepare ferrite-belite-rich Portland cement clinker. The changes in solid waste composition, raw meal ratio, calcination temperature, and holding time on the type and content of iron aluminate phase and silicate phase in the clinker were studied. The effects of flue gas desulfurization gypsum on the mechanical properties of clinker, mineral composition, and microstructure of hardened slurry were briefly discussed. In addition, the sustainability of the production of ferrite-belite-rich Portland cement clinker was evaluated by using a life cycle assessment. The analysis results show that: (1) The content of the ferrite phase increased first and then decreased with the increase of calcination temperature, and the content of the silicate phase and ferrite phase increased first and then decreased with the extension of holding time. (2) With the change of calcination temperature, the silicate phase is always cobblestone-like and evenly distributed. The ferrite phase changes from granular or flake to branch dendritic, and finally is swallowed by the liquid phase, filled between the gaps of the silicate phase structure, or attached to the surface of the silicate phase. (3) The Si elements in the clinker are always agglomerated in cobblestone shapes with uneven sizes. With the holding time from 30 min to 60 min, the distribution area of Al and Fe elements in the gaps of silicate phases increased gradually. Some Al and Fe elements are distributed in the area where silicate phase minerals are located. When the holding time is extended to 90 min, Fe and Al elements tend to be randomly distributed. (4) Fe will replace part of Al to form Fe-ettringite, Fe-siliceous hydrogarnet, etc. in the hydration process of C4AF. (5) The use of red mud, carbide slag, and silica fume to produce ferrite-belite-rich Portland cement clinker will reduce carbon emissions by 57.50%.Keywords: Ferrite-belite-rich Portland cement clinkercalcination temperatureholding timemineral compositionmicrostructure AcknowledgmentThe authors acknowledge the support of this work was supported by the Major Scientific and Technological Innovation Projects in Shandong Province, the National Key R&D Program of China and the Key Projects of Natural Science Foundation of Shandong Province.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the Major Scientific and Technological Innovation Projects in Shandong Province [Grants Nos. 2020CXGC011405 and Grants Nos. 2021CXGC010301], the National Key R&D Program of China [Grants Nos. 2022YFB2601900] and the Key Projects of Natural Science Foundation of Shandong Province [No. 2020KE006].","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135436218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-09DOI: 10.1080/21650373.2023.2255185
Qiaosong Hu, Jinhao Gong, Zhilin Bai, Zichao Que, Wenlin Feng, Dujian Zou
{"title":"Effects of carbonation on the compressive strength of autoclaved aerated concrete with different Ca/Si ratios","authors":"Qiaosong Hu, Jinhao Gong, Zhilin Bai, Zichao Que, Wenlin Feng, Dujian Zou","doi":"10.1080/21650373.2023.2255185","DOIUrl":"https://doi.org/10.1080/21650373.2023.2255185","url":null,"abstract":"","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136192604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-07DOI: 10.1080/21650373.2023.2254313
V. Kobya, Kemal Karakuzu, A. Mardani, B. Felekoğlu, K. Ramyar
{"title":"Effect of polycarboxylate-based water-reducing admixture chains length on portland cement-admixture compatibility","authors":"V. Kobya, Kemal Karakuzu, A. Mardani, B. Felekoğlu, K. Ramyar","doi":"10.1080/21650373.2023.2254313","DOIUrl":"https://doi.org/10.1080/21650373.2023.2254313","url":null,"abstract":"","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44443162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-04DOI: 10.1080/21650373.2023.2249889
K. Srinivas M, U. J. Alengaram, Shaliza Ibrahim, Vejeysri Vello, Siew Moi Phang
{"title":"Feasibility study on the use of microalgae as an external crack healing agent for cement mortar rehabilitation","authors":"K. Srinivas M, U. J. Alengaram, Shaliza Ibrahim, Vejeysri Vello, Siew Moi Phang","doi":"10.1080/21650373.2023.2249889","DOIUrl":"https://doi.org/10.1080/21650373.2023.2249889","url":null,"abstract":"","PeriodicalId":48521,"journal":{"name":"Journal of Sustainable Cement-Based Materials","volume":" ","pages":""},"PeriodicalIF":4.4,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45828944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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