Pub Date : 2023-02-17DOI: 10.3390/materproc2023013035
R. Gailitis, Pauls Pudans, Krists Ziemelis, G. Bumanis, A. Sprince
: In recent years, 3D printing has been more and more used in the development of buildings and building elements. Mostly-printed structures are subjected to compression that is oriented perpendicular to the layer laying direction. When applying load in this way, the printed structure exhibits characteristics similar to masonry structures. However, as the technology and application of 3D printing develop, the structures also become more complicated and subjected not only to direct compression but other stresses as well. In this paper, long-term properties together with compressive strength were determined for 3D-printed specimens with load applied in the same direction as the layers are laid. The long-term and mechanical properties were compared with cast same-composition specimens. Results show that for the printed specimens, the compressive strength was more than two times lower than cast specimens, while the creep properties were slightly lower for the printed specimens.
{"title":"Early-Age Creep and Shrinkage Properties of Printed and Cast Cement Composite","authors":"R. Gailitis, Pauls Pudans, Krists Ziemelis, G. Bumanis, A. Sprince","doi":"10.3390/materproc2023013035","DOIUrl":"https://doi.org/10.3390/materproc2023013035","url":null,"abstract":": In recent years, 3D printing has been more and more used in the development of buildings and building elements. Mostly-printed structures are subjected to compression that is oriented perpendicular to the layer laying direction. When applying load in this way, the printed structure exhibits characteristics similar to masonry structures. However, as the technology and application of 3D printing develop, the structures also become more complicated and subjected not only to direct compression but other stresses as well. In this paper, long-term properties together with compressive strength were determined for 3D-printed specimens with load applied in the same direction as the layers are laid. The long-term and mechanical properties were compared with cast same-composition specimens. Results show that for the printed specimens, the compressive strength was more than two times lower than cast specimens, while the creep properties were slightly lower for the printed specimens.","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"536 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116494749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-16DOI: 10.3390/materproc2023013036
J. Šlanhof, Aleš Průcha, B. Nečasová, A. Boháček
: This paper deals with the issue of fastening sheet-metal components on the facades of contemporary buildings that are massively insulated with external thermal insulation composite systems. This research focused on facades with thin-layer acrylic plaster and sheet-metal components made of aluminium, copper and hot-dipped galvanized sheet metal. Two different test methods and test sample geometries were used to determine the most critical aspects for the studied application sectors. Surprisingly high tensile properties as well as shear stresses in the bonded joints were recorded for all the selected combinations. The presented results confirmed the assumed benefits for the construction industry and the future practical use of this technology in construction, although the durability of a bonded joint will always depend mainly on the quality of the bonded substrate.
{"title":"Use of Bonded Joints for Fastening Sheet-Metal Components to Contemporary Facades Fitted with an External Thermal Insulation Composite System with Thin-Layer Acrylic Plaster","authors":"J. Šlanhof, Aleš Průcha, B. Nečasová, A. Boháček","doi":"10.3390/materproc2023013036","DOIUrl":"https://doi.org/10.3390/materproc2023013036","url":null,"abstract":": This paper deals with the issue of fastening sheet-metal components on the facades of contemporary buildings that are massively insulated with external thermal insulation composite systems. This research focused on facades with thin-layer acrylic plaster and sheet-metal components made of aluminium, copper and hot-dipped galvanized sheet metal. Two different test methods and test sample geometries were used to determine the most critical aspects for the studied application sectors. Surprisingly high tensile properties as well as shear stresses in the bonded joints were recorded for all the selected combinations. The presented results confirmed the assumed benefits for the construction industry and the future practical use of this technology in construction, although the durability of a bonded joint will always depend mainly on the quality of the bonded substrate.","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132201665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-16DOI: 10.3390/materproc2023013032
W. Brachaczek, Adam Chleboś, Magdalena Kupczak, Sebastian Spisak, Michał Stybak, Katarzyna Żyrek
: This publication presents the results of a study of the effect of partial replacement of cement with waste and natural materials: ground blast furnace slag, fly ash and lime meal on the strength properties of mortars compared to a reference mortar without these additives. In subsequent tests, these materials were gradually replaced with up to 10% CEM I cement. Their effects on consistency and compressive and flexural tensile strengths after 28 days of maturation were investigated. The tests were carried out on blocks measuring 40 mm × 40 mm × 160 mm according to the standard. In the range of tests analysed, the results obtained make it feasible to consider the possibility of partially replacing cement with silica fly ash and ground granulated blast furnace slag in cement mortars.
本出版物介绍了一项研究结果，研究了用废弃和天然材料(磨碎的高炉矿渣、粉煤灰和石灰粉)部分替代水泥对砂浆强度性能的影响，并与不含这些添加剂的参考砂浆进行了比较。在随后的测试中，这些材料逐渐被高达10%的CEM I水泥取代。研究了其对28 d成熟后稠度和抗压、抗折强度的影响。试验采用标准尺寸为40 mm × 40 mm × 160 mm的砌块进行。在所分析的试验范围内，所获得的结果表明，可以考虑在水泥砂浆中用硅粉煤灰和磨碎的高炉矿渣部分替代水泥的可能性。
{"title":"Influence of the Addition of Ground Granulated Blast Furnace Slag, Fly Silica Ash and Limestone on Selected Properties of Cement Mortars","authors":"W. Brachaczek, Adam Chleboś, Magdalena Kupczak, Sebastian Spisak, Michał Stybak, Katarzyna Żyrek","doi":"10.3390/materproc2023013032","DOIUrl":"https://doi.org/10.3390/materproc2023013032","url":null,"abstract":": This publication presents the results of a study of the effect of partial replacement of cement with waste and natural materials: ground blast furnace slag, fly ash and lime meal on the strength properties of mortars compared to a reference mortar without these additives. In subsequent tests, these materials were gradually replaced with up to 10% CEM I cement. Their effects on consistency and compressive and flexural tensile strengths after 28 days of maturation were investigated. The tests were carried out on blocks measuring 40 mm × 40 mm × 160 mm according to the standard. In the range of tests analysed, the results obtained make it feasible to consider the possibility of partially replacing cement with silica fly ash and ground granulated blast furnace slag in cement mortars.","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132430133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-16DOI: 10.3390/materproc2023013029
B. L. Olafsson, Gudbjartur Jon Einarsson, E. Thorhallsson
: This article discusses the flexural strength of fiber reinforced concrete beams made by adding an optimal percentage of basalt fibers to the concrete mix. Two types of standard C30/37: XC1 concrete were used in this study, one with the aggregate size limit 19 mm and the other with the aggregate size of max. 4 mm. The basalt fibers used are two different types: Reforcetech minibar is a stiff basalt fiber, and its diameter is 0.72 mm and length 50 mm; Basaltex BCS17-25.4-KV1 is 30 mm in length with a flat cross-section of 0.017 × 4 mm. The test method measures the flexural efficiency of the strength parameters extracted from fiber reinforced concrete. The conclusion of this study is that the scale, quantity and type of basalt fibers have an impact on how the concrete acts under load. All types of fiber show promising results.
{"title":"Flexural Performance of Chopped Basalt Fiber Reinforced Concrete Beams","authors":"B. L. Olafsson, Gudbjartur Jon Einarsson, E. Thorhallsson","doi":"10.3390/materproc2023013029","DOIUrl":"https://doi.org/10.3390/materproc2023013029","url":null,"abstract":": This article discusses the flexural strength of fiber reinforced concrete beams made by adding an optimal percentage of basalt fibers to the concrete mix. Two types of standard C30/37: XC1 concrete were used in this study, one with the aggregate size limit 19 mm and the other with the aggregate size of max. 4 mm. The basalt fibers used are two different types: Reforcetech minibar is a stiff basalt fiber, and its diameter is 0.72 mm and length 50 mm; Basaltex BCS17-25.4-KV1 is 30 mm in length with a flat cross-section of 0.017 × 4 mm. The test method measures the flexural efficiency of the strength parameters extracted from fiber reinforced concrete. The conclusion of this study is that the scale, quantity and type of basalt fibers have an impact on how the concrete acts under load. All types of fiber show promising results.","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115692624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-16DOI: 10.3390/materproc2023013031
A. Nowak-Michta
: In Europe, the construction sector currently generates more than a third of CO 2 emissions. Moreover, residential buildings consume about 40% of the energy that we are able to produce. Construction product manufacturers implement innovative solutions that give us a chance to achieve more widespread construction of zero-emission and zero-energy buildings. However, they face legal barriers related to the lack of standardization procedures enabling the rapid placing of innovative construction products on the market to be achieved. The MEZeroE project (“Measuring Envelope products and systems contributing to next generation of healthy nearly Zero Energy Buildings”), funded by European Union Horizon 2020, aims to create a platform combining science and business to facilitate the development of nearly zero-energy buildings. The aim of this paper is to present the European procedure for placing innovative construction products on the market under the MEZeroE project.
{"title":"Placing on the Market Modern Construction Products and Systems Contributing to Next Generation of Healthy, Nearly Zero-Energy Buildings","authors":"A. Nowak-Michta","doi":"10.3390/materproc2023013031","DOIUrl":"https://doi.org/10.3390/materproc2023013031","url":null,"abstract":": In Europe, the construction sector currently generates more than a third of CO 2 emissions. Moreover, residential buildings consume about 40% of the energy that we are able to produce. Construction product manufacturers implement innovative solutions that give us a chance to achieve more widespread construction of zero-emission and zero-energy buildings. However, they face legal barriers related to the lack of standardization procedures enabling the rapid placing of innovative construction products on the market to be achieved. The MEZeroE project (“Measuring Envelope products and systems contributing to next generation of healthy nearly Zero Energy Buildings”), funded by European Union Horizon 2020, aims to create a platform combining science and business to facilitate the development of nearly zero-energy buildings. The aim of this paper is to present the European procedure for placing innovative construction products on the market under the MEZeroE project.","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132962670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-16DOI: 10.3390/materproc2023013033
M. Goron, E. Sudoł
: Polymer composites reinforced with crop husks show susceptibility to fungi of the Agari-comycotina subdivision, particularly Coniophora puteana . The material’s resistance to the fungi is evaluated by exposing specimens to the fungus for 16 weeks, and then determining the mass loss and changes in mechanical properties. An important pre-testing step is cleaning the samples of mycelium. The study compares the effects of the manual cleaning method with a soft brush and with water under pressure. The aim of the study is to select a method that is non-destructive to the material. The results will be evaluated by mass loss, bending strength and modulus of elasticity.
{"title":"Effect of Fungi Removal Method on the Mechanical Properties of Polymer Composites Reinforced with Oat and Millet Husks","authors":"M. Goron, E. Sudoł","doi":"10.3390/materproc2023013033","DOIUrl":"https://doi.org/10.3390/materproc2023013033","url":null,"abstract":": Polymer composites reinforced with crop husks show susceptibility to fungi of the Agari-comycotina subdivision, particularly Coniophora puteana . The material’s resistance to the fungi is evaluated by exposing specimens to the fungus for 16 weeks, and then determining the mass loss and changes in mechanical properties. An important pre-testing step is cleaning the samples of mycelium. The study compares the effects of the manual cleaning method with a soft brush and with water under pressure. The aim of the study is to select a method that is non-destructive to the material. The results will be evaluated by mass loss, bending strength and modulus of elasticity.","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115572631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-15DOI: 10.3390/materproc2023013024
Małgorzata Wydra, P. Dolny, Grzegorz Sadowski, Natalia Grochowska, P. Turkowski, J. Fangrat
{"title":"Analysis of Thermal and Mechanical Parameters of the BFRP Bars","authors":"Małgorzata Wydra, P. Dolny, Grzegorz Sadowski, Natalia Grochowska, P. Turkowski, J. Fangrat","doi":"10.3390/materproc2023013024","DOIUrl":"https://doi.org/10.3390/materproc2023013024","url":null,"abstract":"","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122774799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-15DOI: 10.3390/materproc2023013026
M. Adamczyk, T. Zdeb, T. Tracz
{"title":"Physico-Chemical Properties of Sewage Sludge Ash and Its Influence on the Chemical Shrinkage of Cement Pastes","authors":"M. Adamczyk, T. Zdeb, T. Tracz","doi":"10.3390/materproc2023013026","DOIUrl":"https://doi.org/10.3390/materproc2023013026","url":null,"abstract":"","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134295262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-15DOI: 10.3390/materproc2023013025
Kalaimani Ramakrishnan, V. Chellappa, Subha Chandrasekarabarathi
: Bricks consume a massive quantity of clay. Using clay bricks causes erosion, lowers the water table, and harms the environment. This research examined various waste materials, including fly ash, quarry dust, marble dust, eggshell powder (ESP), and rice husk ash (RHA), in varying percentages to avoid using clay in manufacturing bricks. Compressive strength and water absorption tests were conducted, and the results were compared with the specifications for traditional clay bricks. It was observed that the compressive strength and water absorption values met the relevant standards needed for standard construction bricks. Furthermore, the cost of manufacturing bricks from waste materials was estimated, and the findings show that manufacturing bricks from waste materials cost less than conventional bricks. Finally, it was concluded that the brick industry could become more sustainable and economically feasible by using specific waste materials in manufacturing bricks
{"title":"Manufacturing of Low-Cost Bricks Using Waste Materials","authors":"Kalaimani Ramakrishnan, V. Chellappa, Subha Chandrasekarabarathi","doi":"10.3390/materproc2023013025","DOIUrl":"https://doi.org/10.3390/materproc2023013025","url":null,"abstract":": Bricks consume a massive quantity of clay. Using clay bricks causes erosion, lowers the water table, and harms the environment. This research examined various waste materials, including fly ash, quarry dust, marble dust, eggshell powder (ESP), and rice husk ash (RHA), in varying percentages to avoid using clay in manufacturing bricks. Compressive strength and water absorption tests were conducted, and the results were compared with the specifications for traditional clay bricks. It was observed that the compressive strength and water absorption values met the relevant standards needed for standard construction bricks. Furthermore, the cost of manufacturing bricks from waste materials was estimated, and the findings show that manufacturing bricks from waste materials cost less than conventional bricks. Finally, it was concluded that the brick industry could become more sustainable and economically feasible by using specific waste materials in manufacturing bricks","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128032680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-15DOI: 10.3390/materproc2023013023
M. Kalinowski, P. Woyciechowski, W. Jackiewicz-Rek
: This study focuses on developing new surface modification methods for photocatalytic cementitious composites. The question that was investigated was if superabsorbent polymers can act as an intermediate environment, intensifying the incorporation of TiO 2 particles on the surface of the tested material. Four variants of surface modification were designed: water dispersions of TiO 2 with non-saturated SAP, with SAP in a hydrogel form, and two reference series. Due to the use of SAP, the efficiency in air purification from NO x under different light conditions compared to the reference series increased significantly, exceeding a 75% increase under a UV-A light and a 600% increase under visible light.
{"title":"Surface Modification of Photocatalytic Cementitious Composites with Polyacrylic Superabsorbent Polymers (SAP)","authors":"M. Kalinowski, P. Woyciechowski, W. Jackiewicz-Rek","doi":"10.3390/materproc2023013023","DOIUrl":"https://doi.org/10.3390/materproc2023013023","url":null,"abstract":": This study focuses on developing new surface modification methods for photocatalytic cementitious composites. The question that was investigated was if superabsorbent polymers can act as an intermediate environment, intensifying the incorporation of TiO 2 particles on the surface of the tested material. Four variants of surface modification were designed: water dispersions of TiO 2 with non-saturated SAP, with SAP in a hydrogel form, and two reference series. Due to the use of SAP, the efficiency in air purification from NO x under different light conditions compared to the reference series increased significantly, exceeding a 75% increase under a UV-A light and a 600% increase under visible light.","PeriodicalId":298795,"journal":{"name":"10th MATBUD’2023 Scientific-Technical Conference","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130941347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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