Performance Study and Reliability Analysis of Desert Sand Concrete Under FTC
Using desert sand (DS) to pour concrete is a feasible idea to solve the shortage of river sand. However, the frost resistance of desert sand concrete (DSC) is a key problem that must be solved for applying DSC in practical engineering. Therefore, this study on the performance and reliability analysi...
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MDPI AG
2025-04-01
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| author | Yun Luo Ruichen Zhang Yanping Wu Zhiqiang Li |
| author_facet | Yun Luo Ruichen Zhang Yanping Wu Zhiqiang Li |
| author_sort | Yun Luo |
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| description | Using desert sand (DS) to pour concrete is a feasible idea to solve the shortage of river sand. However, the frost resistance of desert sand concrete (DSC) is a key problem that must be solved for applying DSC in practical engineering. Therefore, this study on the performance and reliability analysis of DSC under a freeze–thaw cycle (FTC) was carried out. The DSC specimens were subjected to the FTC test with desert sand replacement ratios (DSRRs) of 0%, 20%, 40%, 60%, 80%, and 100%. Then, the appearance, mass, relative dynamic elastic modulus (RDEM), and compressive strength of DSC were analyzed and discussed. Moreover, the damage mechanism of DSC was discussed via microstructural analysis. The results indicated that as the FTCs increased, the mass loss rate of concrete increased, while the RDEM and compressive strength decreased. Among the samples, DSC-40 showed the best resistance to the FTC. After 250 cycles, the changes in mass, RDEM, and compressive strength of DSC-40 were 2.73%, 15.19%, and 27.2% lower than those of DSC0. Finally, the DSC reliability model was established by using the Weibull probability distribution method. Among all groups, DSC-40 showed the best reliability, and the failure life was 287 FTCs, which was approximately 1.55-times longer than DSC0. This model could provide a theoretical basis for the durability evaluation and life prediction of DSC structures in cold regions. |
| format | Article |
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| institution | OA Journals |
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| language | English |
| publishDate | 2025-04-01 |
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| spelling | doaj-art-5ddf39ec1e5742c6a176136a45b21fbf2025-08-20T02:24:39ZengMDPI AGBuildings2075-53092025-04-01158131710.3390/buildings15081317Performance Study and Reliability Analysis of Desert Sand Concrete Under FTCYun Luo0Ruichen Zhang1Yanping Wu2Zhiqiang Li3School of Safety Science and Engineering, Chongqing University of Science and Technology, Chongqing 401331, ChinaCollege of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832003, ChinaSchool of Intelligent Manufacturing & Transportation, Chongqing Vocational Institute of Engineering, Chongqing 402260, ChinaCollege of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832003, ChinaUsing desert sand (DS) to pour concrete is a feasible idea to solve the shortage of river sand. However, the frost resistance of desert sand concrete (DSC) is a key problem that must be solved for applying DSC in practical engineering. Therefore, this study on the performance and reliability analysis of DSC under a freeze–thaw cycle (FTC) was carried out. The DSC specimens were subjected to the FTC test with desert sand replacement ratios (DSRRs) of 0%, 20%, 40%, 60%, 80%, and 100%. Then, the appearance, mass, relative dynamic elastic modulus (RDEM), and compressive strength of DSC were analyzed and discussed. Moreover, the damage mechanism of DSC was discussed via microstructural analysis. The results indicated that as the FTCs increased, the mass loss rate of concrete increased, while the RDEM and compressive strength decreased. Among the samples, DSC-40 showed the best resistance to the FTC. After 250 cycles, the changes in mass, RDEM, and compressive strength of DSC-40 were 2.73%, 15.19%, and 27.2% lower than those of DSC0. Finally, the DSC reliability model was established by using the Weibull probability distribution method. Among all groups, DSC-40 showed the best reliability, and the failure life was 287 FTCs, which was approximately 1.55-times longer than DSC0. This model could provide a theoretical basis for the durability evaluation and life prediction of DSC structures in cold regions.https://www.mdpi.com/2075-5309/15/8/1317desert sand concretefreeze–thaw cyclemicro-mechanismsWeibull probability distributionreliability analysis |
| spellingShingle | Yun Luo Ruichen Zhang Yanping Wu Zhiqiang Li Performance Study and Reliability Analysis of Desert Sand Concrete Under FTC Buildings desert sand concrete freeze–thaw cycle micro-mechanisms Weibull probability distribution reliability analysis |
| title | Performance Study and Reliability Analysis of Desert Sand Concrete Under FTC |
| title_full | Performance Study and Reliability Analysis of Desert Sand Concrete Under FTC |
| title_fullStr | Performance Study and Reliability Analysis of Desert Sand Concrete Under FTC |
| title_full_unstemmed | Performance Study and Reliability Analysis of Desert Sand Concrete Under FTC |
| title_short | Performance Study and Reliability Analysis of Desert Sand Concrete Under FTC |
| title_sort | performance study and reliability analysis of desert sand concrete under ftc |
| topic | desert sand concrete freeze–thaw cycle micro-mechanisms Weibull probability distribution reliability analysis |
| url | https://www.mdpi.com/2075-5309/15/8/1317 |
| work_keys_str_mv | AT yunluo performancestudyandreliabilityanalysisofdesertsandconcreteunderftc AT ruichenzhang performancestudyandreliabilityanalysisofdesertsandconcreteunderftc AT yanpingwu performancestudyandreliabilityanalysisofdesertsandconcreteunderftc AT zhiqiangli performancestudyandreliabilityanalysisofdesertsandconcreteunderftc |