Pub Date : 2023-09-06DOI: 10.1080/19386362.2023.2254135
V. Elamathi, S. Jayalekshmi
{"title":"Effect of mineralogical composition and chemical properties on the consolidation behaviour of clay soils","authors":"V. Elamathi, S. Jayalekshmi","doi":"10.1080/19386362.2023.2254135","DOIUrl":"https://doi.org/10.1080/19386362.2023.2254135","url":null,"abstract":"","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49169160","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 : 2023-09-05DOI: 10.1080/19386362.2023.2254132
Abdellah Cherif Taiba, Y. Mahmoudi, M. Belkhatir
ABSTRACT The objective of this research is to develop novel empirical equations to predict the extreme void ratios of sand-fly ash mixtures. These equations rely on multiple variables derived from the particle morphology properties of three different types of sandy materials. These sands are mixed with varying fractions of spherical fly ash particles, ranging from 0% to 30% fly ash content. High-quality microscope images of individual particles are used to determine the particle morphology properties. The analysis of the results confirms that combining these particle morphology properties (Acom, Scom, ARcom, Cxcom, and ORcom) provides suitable factors for predicting the extreme void ratios of the examined sand-fly ash mixtures. Furthermore, the study clearly demonstrates the significant influence of particle morphology on the packing density of the materials. The developed multi-variable functions can be systematically employed to predict the limit void ratios of sand-fly ash mixtures commonly encountered in various geotechnical engineering applications.
{"title":"New empirical equations for limiting void ratios as function of particle morphology properties of sand-fly ash binary assemblies","authors":"Abdellah Cherif Taiba, Y. Mahmoudi, M. Belkhatir","doi":"10.1080/19386362.2023.2254132","DOIUrl":"https://doi.org/10.1080/19386362.2023.2254132","url":null,"abstract":"ABSTRACT The objective of this research is to develop novel empirical equations to predict the extreme void ratios of sand-fly ash mixtures. These equations rely on multiple variables derived from the particle morphology properties of three different types of sandy materials. These sands are mixed with varying fractions of spherical fly ash particles, ranging from 0% to 30% fly ash content. High-quality microscope images of individual particles are used to determine the particle morphology properties. The analysis of the results confirms that combining these particle morphology properties (Acom, Scom, ARcom, Cxcom, and ORcom) provides suitable factors for predicting the extreme void ratios of the examined sand-fly ash mixtures. Furthermore, the study clearly demonstrates the significant influence of particle morphology on the packing density of the materials. The developed multi-variable functions can be systematically employed to predict the limit void ratios of sand-fly ash mixtures commonly encountered in various geotechnical engineering applications.","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47801394","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 : 2023-09-01DOI: 10.1080/19386362.2023.2246234
Moustafa Abdulrahim Mohamedsalih, A. K. Abd El Aal, Ahmed E. Radwan, Gamil M. S. Abdullah, Mabkhoot Al Saiari
ABSTRACT The rock crushing process produces powdered materials, and tons of these are buried as waste in low-lying areas, dumped on plains, or stacked on them across large areas, negatively impacting the Najran region’s environment in Saudi Arabia, and later they have been used to create manufactured sand (MS). We have studied the feasibility of using Najran MS in the industry of concrete (whose constituents are cement, sand, gravel, and water) by replacing it partially with natural sand in different percentages (20%, 30%, 40%, 60%, and 80%). Based on the British specifications, the physical and mechanical tests of the aggregate and concrete were performed on the Najran manufactured sand concrete samples and compared to conventional concrete samples. In addition, ultrasound tests and scanning electron microscopy of samples were performed to study their internal characteristics. Through the physical tests that were carried out on the two samples of natural sand and Najran manufactured sand, it was found that, except for the absorption of the manufactured sand, they are within the limits of the required British specifications, where the bulk particle density was 2.6 gm/cm 3 and 2.8 gm/cm 3 and the absorption was 1.85% and 9.94% for both natural sand and Najran manufactured sand, respectively. The gradation of natural sand was classified as medium, and the Najran manufactured sand was coarse, falling within the limits of the gradation. According to the ultrasonic test and scanning electron microscope of the concrete samples, it was found that the density of hardened concrete increases by increasing the percentage of Najran manufactured sand replacing natural sand in the concrete mix up to 40%, where the enhancement was 51.78% and 53.46% for the bulk density and the dry density, respectively, subsequently the density decreases gradually. Eventually, it is found that the optimum content of Najran manufactured sand that required improving the mechanical properties of the produced concrete is 40% replacement for natural sand, which gains enhancements of 13.75% for both compressive strength and flexural strength, and 11.9% for splitting strength, respectively, when compared with the properties of conventional concrete. This study can help to manage and reduce significant environmental pollution problems, as well as develop sustainable, low-cost materials that can be used in buildings by low-income people, particularly in Saudi Arabia.
{"title":"Feasibility of Najran rocks crushing waste as manufactured sand in the sustainable concrete industry in the Kingdom of Saudi Arabia","authors":"Moustafa Abdulrahim Mohamedsalih, A. K. Abd El Aal, Ahmed E. Radwan, Gamil M. S. Abdullah, Mabkhoot Al Saiari","doi":"10.1080/19386362.2023.2246234","DOIUrl":"https://doi.org/10.1080/19386362.2023.2246234","url":null,"abstract":"ABSTRACT The rock crushing process produces powdered materials, and tons of these are buried as waste in low-lying areas, dumped on plains, or stacked on them across large areas, negatively impacting the Najran region’s environment in Saudi Arabia, and later they have been used to create manufactured sand (MS). We have studied the feasibility of using Najran MS in the industry of concrete (whose constituents are cement, sand, gravel, and water) by replacing it partially with natural sand in different percentages (20%, 30%, 40%, 60%, and 80%). Based on the British specifications, the physical and mechanical tests of the aggregate and concrete were performed on the Najran manufactured sand concrete samples and compared to conventional concrete samples. In addition, ultrasound tests and scanning electron microscopy of samples were performed to study their internal characteristics. Through the physical tests that were carried out on the two samples of natural sand and Najran manufactured sand, it was found that, except for the absorption of the manufactured sand, they are within the limits of the required British specifications, where the bulk particle density was 2.6 gm/cm 3 and 2.8 gm/cm 3 and the absorption was 1.85% and 9.94% for both natural sand and Najran manufactured sand, respectively. The gradation of natural sand was classified as medium, and the Najran manufactured sand was coarse, falling within the limits of the gradation. According to the ultrasonic test and scanning electron microscope of the concrete samples, it was found that the density of hardened concrete increases by increasing the percentage of Najran manufactured sand replacing natural sand in the concrete mix up to 40%, where the enhancement was 51.78% and 53.46% for the bulk density and the dry density, respectively, subsequently the density decreases gradually. Eventually, it is found that the optimum content of Najran manufactured sand that required improving the mechanical properties of the produced concrete is 40% replacement for natural sand, which gains enhancements of 13.75% for both compressive strength and flexural strength, and 11.9% for splitting strength, respectively, when compared with the properties of conventional concrete. This study can help to manage and reduce significant environmental pollution problems, as well as develop sustainable, low-cost materials that can be used in buildings by low-income people, particularly in Saudi Arabia.","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47561399","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 : 2023-08-29DOI: 10.1080/19386362.2023.2251796
Neetu Yadav, R. Kumar, Radha J. Gonawala
{"title":"Engineering properties of construction and demolition material blends for pavement subbase applications","authors":"Neetu Yadav, R. Kumar, Radha J. Gonawala","doi":"10.1080/19386362.2023.2251796","DOIUrl":"https://doi.org/10.1080/19386362.2023.2251796","url":null,"abstract":"","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47521448","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}
ABSTRACT Mixing carpet fibre in sand offers great potential for enhancing soil properties. In this study, direct shear tests were conducted on two different sands mixed with varying carpet fibre percentages to investigate the effects on soil strength, stiffness, and deformation. Artificial intelligence techniques were used to analyse the data and develop predictive models, including an empirical equation that predicts the shear strength. The results showed that the addition of carpet fibre improved soil properties, with increased strength, stiffness, and reduced deformation. The AI models, including the empirical equation, accurately predicted the mixture's shear strength. Furthermore, this study investigated the importance of each input parameter in predicting the mixture's shear strength. The input parameters are normal stress, void ratio, mean particle size, and the ratio of carpet fibre content to specific gravity. According to the results, normal stress is the most important parameter, and mean particle size is the least important.
{"title":"Shear strength characteristics of binary mixture sand-carpet fibre using experimental study and machine learning","authors":"Firas Daghistani, Abolfazl Baghbani, Hossam Abuel Naga","doi":"10.1080/19386362.2023.2246247","DOIUrl":"https://doi.org/10.1080/19386362.2023.2246247","url":null,"abstract":"ABSTRACT Mixing carpet fibre in sand offers great potential for enhancing soil properties. In this study, direct shear tests were conducted on two different sands mixed with varying carpet fibre percentages to investigate the effects on soil strength, stiffness, and deformation. Artificial intelligence techniques were used to analyse the data and develop predictive models, including an empirical equation that predicts the shear strength. The results showed that the addition of carpet fibre improved soil properties, with increased strength, stiffness, and reduced deformation. The AI models, including the empirical equation, accurately predicted the mixture's shear strength. Furthermore, this study investigated the importance of each input parameter in predicting the mixture's shear strength. The input parameters are normal stress, void ratio, mean particle size, and the ratio of carpet fibre content to specific gravity. According to the results, normal stress is the most important parameter, and mean particle size is the least important.","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41729582","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}
{"title":"Effect of thixotropy on mechanical properties of soft clay with different initial disturbance degrees","authors":"Aiwu Yang, Shaopeng Yang, Jing Zhang, Xianwei Zhang","doi":"10.1080/19386362.2023.2246231","DOIUrl":"https://doi.org/10.1080/19386362.2023.2246231","url":null,"abstract":"","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43952414","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 : 2023-08-10DOI: 10.1080/19386362.2023.2245230
A. Gaddam, Venkata Ramana Gondu, S. K. Yamsani, Vinod Kumar Adigopula
{"title":"Comprehensive utilization of brick waste as a precursor in synthesizing geopolymer for treating black cotton soil","authors":"A. Gaddam, Venkata Ramana Gondu, S. K. Yamsani, Vinod Kumar Adigopula","doi":"10.1080/19386362.2023.2245230","DOIUrl":"https://doi.org/10.1080/19386362.2023.2245230","url":null,"abstract":"","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45519723","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 : 2023-08-08DOI: 10.1080/19386362.2023.2239686
S. Sivapriya, S. Gunalan, A. Mugesh, J. Niranjan, K. Yuvaraj
ABSTRACT The current study aims in finding the utilization of Industrial waste such as copper and steel slags as a partial replacement material for sand in Sand Compaction Pile (SCP) in proportions of 5%, 10%, 15%, 20%, 30%, and 40% by weight. From the direct shear tests, it is observed that the angle of internal friction increases from 27.59° to 40.1° and 34.82° for copper and steel slags, respectively. The tests are done by installing the SCP in a soft clay in California Bearing Ratio mould and it is tested under soaked and unsoaked conditions. The optimum percentage found from the study for both the slag material is 30%. Tests were also done by air-curing the composite soil within the mould for 7 days and water-curing the sample under soaked conditions for 4 days for the optimum replacement percentage.
{"title":"Investigating the advantage of copper and steel slags as partial replacement material in a sand compaction column in stabilizing the soft clay","authors":"S. Sivapriya, S. Gunalan, A. Mugesh, J. Niranjan, K. Yuvaraj","doi":"10.1080/19386362.2023.2239686","DOIUrl":"https://doi.org/10.1080/19386362.2023.2239686","url":null,"abstract":"ABSTRACT The current study aims in finding the utilization of Industrial waste such as copper and steel slags as a partial replacement material for sand in Sand Compaction Pile (SCP) in proportions of 5%, 10%, 15%, 20%, 30%, and 40% by weight. From the direct shear tests, it is observed that the angle of internal friction increases from 27.59° to 40.1° and 34.82° for copper and steel slags, respectively. The tests are done by installing the SCP in a soft clay in California Bearing Ratio mould and it is tested under soaked and unsoaked conditions. The optimum percentage found from the study for both the slag material is 30%. Tests were also done by air-curing the composite soil within the mould for 7 days and water-curing the sample under soaked conditions for 4 days for the optimum replacement percentage.","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47114595","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}
ABSTRACT The differential settlement law of new and old subgrade is considered the key problem for settlement control of subgrade in highway expansion in soft soil areas. Along these lines, based on the on-site CPTU test and laboratory test results of the Huai’an-Jiangdu section of the Beijing-Shanghai high-speed expansion project, the physical and mechanical parameters of the soils were obtained in this work. In addition, by performing numerical simulations, the laws of settlement and deformation of both new and old embankments were systematically studied. From the acquired results, it was demonstrated that the deformation regularity of the whole subgrade before and after the expansion was the same, while it was observed that it only diffused outwards. However, according to the analysis of additional deformation after expansion, it was found that the load exerted on the widened part had a greater influence on the widened part of the foundation. The numerical simulation outcomes of the highway expansion foundation can provide design guidance for differential settlement control and monitoring of both the new and old highway foundation.
{"title":"Numerical simulation of the subgrade settlement of highway expansion based on CPTU data","authors":"Caijin Wang, Jianxin Chang, G. Cai, Hua He, Song-yu Liu, Meng Wang, Meng Wu","doi":"10.1080/19386362.2023.2245218","DOIUrl":"https://doi.org/10.1080/19386362.2023.2245218","url":null,"abstract":"ABSTRACT The differential settlement law of new and old subgrade is considered the key problem for settlement control of subgrade in highway expansion in soft soil areas. Along these lines, based on the on-site CPTU test and laboratory test results of the Huai’an-Jiangdu section of the Beijing-Shanghai high-speed expansion project, the physical and mechanical parameters of the soils were obtained in this work. In addition, by performing numerical simulations, the laws of settlement and deformation of both new and old embankments were systematically studied. From the acquired results, it was demonstrated that the deformation regularity of the whole subgrade before and after the expansion was the same, while it was observed that it only diffused outwards. However, according to the analysis of additional deformation after expansion, it was found that the load exerted on the widened part had a greater influence on the widened part of the foundation. The numerical simulation outcomes of the highway expansion foundation can provide design guidance for differential settlement control and monitoring of both the new and old highway foundation.","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46546295","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 : 2023-08-01DOI: 10.1080/19386362.2023.2241280
M. Uduebor, J. Daniels, D. Adeyanju, Md Fyaz Sadiq, B. Cetin
ABSTRACT Moisture-related pavement distresses lead to significant damage and recurring maintenance costs with substantial CO2 emissions. Engineering water repellency in pavement soils can help maintain uniform moisture conditions that improve and maintain performance, reduce design speculation, lowering material and construction costs, and emissions. This study examines the impact of grain size on water repellency treatment effectiveness. Soils from U.S. low volume roads and glass beads were treated with organosilane. Results showed effective water repellency, with contact angles ranging from 119.5° to 148.5°. Larger grain size reduced contact angle while increasing surface roughness raised it. Water drop penetration time tests showed no penetration after 2 hours (7200s), regardless of grain size, with breakthrough pressure values declining with larger grain and pore sizes (2kPa - 0.1kPa). This study discusses highlights the importance of considering grain and pore size effects when using water-repellent soils in pavement construction.
{"title":"Engineered water repellency for resilient and sustainable pavement systems","authors":"M. Uduebor, J. Daniels, D. Adeyanju, Md Fyaz Sadiq, B. Cetin","doi":"10.1080/19386362.2023.2241280","DOIUrl":"https://doi.org/10.1080/19386362.2023.2241280","url":null,"abstract":"ABSTRACT Moisture-related pavement distresses lead to significant damage and recurring maintenance costs with substantial CO2 emissions. Engineering water repellency in pavement soils can help maintain uniform moisture conditions that improve and maintain performance, reduce design speculation, lowering material and construction costs, and emissions. This study examines the impact of grain size on water repellency treatment effectiveness. Soils from U.S. low volume roads and glass beads were treated with organosilane. Results showed effective water repellency, with contact angles ranging from 119.5° to 148.5°. Larger grain size reduced contact angle while increasing surface roughness raised it. Water drop penetration time tests showed no penetration after 2 hours (7200s), regardless of grain size, with breakthrough pressure values declining with larger grain and pore sizes (2kPa - 0.1kPa). This study discusses highlights the importance of considering grain and pore size effects when using water-repellent soils in pavement construction.","PeriodicalId":47238,"journal":{"name":"International Journal of Geotechnical Engineering","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44151066","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：