Comprehensive Laboratory Evaluations and a Proposed Mix Design Procedure for Cement-Stabilized Cohesive and Granular Soils
Embankment subgrade soils classifying as A-4 to A-7-6 according to the AASHTO Soil Classification System can exhibit low bearing strength, high volumetric instability, and freeze-thaw susceptibility. These characteristics of soil are frequently identified as main factors leading to accelerated damag...
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2020-07-01
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doaj-2e8baaa5da904936a7b4432a9d0ce7672020-11-25T02:53:13ZengFrontiers Media S.A.Frontiers in Materials2296-80162020-07-01710.3389/fmats.2020.00239566963Comprehensive Laboratory Evaluations and a Proposed Mix Design Procedure for Cement-Stabilized Cohesive and Granular SoilsYi Yang0Shengting Li1Cheng Li2Lijian Wu3Lvzhen Yang4Ping Zhang5Tuo Huang6Xiandai Investment Co., Ltd., Changsha University of Science and Technology, Changsha, ChinaKey Laboratory of Transport Industry of Road Structure and Material, Research Institute of Highway, Ministry of Transport, Beijing, ChinaSchool of Highway, Chang’an University, Xi’an, ChinaKey Laboratory of Transport Industry of Road Structure and Material, Research Institute of Highway, Ministry of Transport, Beijing, ChinaHunan Communication Polytechnic, Changsha, ChinaSchool of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha, ChinaSchool of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha, ChinaEmbankment subgrade soils classifying as A-4 to A-7-6 according to the AASHTO Soil Classification System can exhibit low bearing strength, high volumetric instability, and freeze-thaw susceptibility. These characteristics of soil are frequently identified as main factors leading to accelerated damage of pavement systems. Cement stabilization has been widely used to improve these soils conditions. The present study aims to help designers and practitioners better understand how cement stabilizations can influence soil index properties and mechanical properties before and after saturation. In this study, a total of 28 cohesive and granular soil materials obtained from nine construction sites were tested using 4–12% type I/II Portland cement contents. Specimens were prepared using a 2 inch by 2 inch compaction apparatus and tested for 28-day unconfined compressive strength (UCS) with and without vacuum saturation. Results indicated that statistically significant relationships exist between soil index properties, UCS, and cement content. Based on the laboratory test results, a laboratory evaluation procedure for cement stabilization mix design for both granular and cohesive soils is proposed.https://www.frontiersin.org/article/10.3389/fmats.2020.00239/fullsoil stabilizationcement stabilizationunconfined compressive strengthfines contentAtterberg limitsAASHTO group index |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yi Yang Shengting Li Cheng Li Lijian Wu Lvzhen Yang Ping Zhang Tuo Huang |
spellingShingle |
Yi Yang Shengting Li Cheng Li Lijian Wu Lvzhen Yang Ping Zhang Tuo Huang Comprehensive Laboratory Evaluations and a Proposed Mix Design Procedure for Cement-Stabilized Cohesive and Granular Soils Frontiers in Materials soil stabilization cement stabilization unconfined compressive strength fines content Atterberg limits AASHTO group index |
author_facet |
Yi Yang Shengting Li Cheng Li Lijian Wu Lvzhen Yang Ping Zhang Tuo Huang |
author_sort |
Yi Yang |
title |
Comprehensive Laboratory Evaluations and a Proposed Mix Design Procedure for Cement-Stabilized Cohesive and Granular Soils |
title_short |
Comprehensive Laboratory Evaluations and a Proposed Mix Design Procedure for Cement-Stabilized Cohesive and Granular Soils |
title_full |
Comprehensive Laboratory Evaluations and a Proposed Mix Design Procedure for Cement-Stabilized Cohesive and Granular Soils |
title_fullStr |
Comprehensive Laboratory Evaluations and a Proposed Mix Design Procedure for Cement-Stabilized Cohesive and Granular Soils |
title_full_unstemmed |
Comprehensive Laboratory Evaluations and a Proposed Mix Design Procedure for Cement-Stabilized Cohesive and Granular Soils |
title_sort |
comprehensive laboratory evaluations and a proposed mix design procedure for cement-stabilized cohesive and granular soils |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Materials |
issn |
2296-8016 |
publishDate |
2020-07-01 |
description |
Embankment subgrade soils classifying as A-4 to A-7-6 according to the AASHTO Soil Classification System can exhibit low bearing strength, high volumetric instability, and freeze-thaw susceptibility. These characteristics of soil are frequently identified as main factors leading to accelerated damage of pavement systems. Cement stabilization has been widely used to improve these soils conditions. The present study aims to help designers and practitioners better understand how cement stabilizations can influence soil index properties and mechanical properties before and after saturation. In this study, a total of 28 cohesive and granular soil materials obtained from nine construction sites were tested using 4–12% type I/II Portland cement contents. Specimens were prepared using a 2 inch by 2 inch compaction apparatus and tested for 28-day unconfined compressive strength (UCS) with and without vacuum saturation. Results indicated that statistically significant relationships exist between soil index properties, UCS, and cement content. Based on the laboratory test results, a laboratory evaluation procedure for cement stabilization mix design for both granular and cohesive soils is proposed. |
topic |
soil stabilization cement stabilization unconfined compressive strength fines content Atterberg limits AASHTO group index |
url |
https://www.frontiersin.org/article/10.3389/fmats.2020.00239/full |
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