Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures

In the building domain, the non-renewable resource of sand is widely used to produce concrete and mortar. The sand production has been estimated to be more than 10 billion tons with a total of 1.2 billion tons used in concrete in the last decade, which causes the gradual reduction of available build...

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Main Authors: Zhang, Minghu, Liu, Haifeng, Sun, Shuai, Chen, Xiaolong, Doh, Shu Ing
Format: Article
Language:English
Published: MDPI 2019
Subjects:
Online Access:http://umpir.ump.edu.my/id/eprint/26089/
http://umpir.ump.edu.my/id/eprint/26089/7/Dynamic%20Mechanical%20Behaviors%20of%20Desert%20Sand.pdf
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author Zhang, Minghu
Liu, Haifeng
Sun, Shuai
Chen, Xiaolong
Doh, Shu Ing
author_facet Zhang, Minghu
Liu, Haifeng
Sun, Shuai
Chen, Xiaolong
Doh, Shu Ing
author_sort Zhang, Minghu
building UMP Institutional Repository
collection Online Access
description In the building domain, the non-renewable resource of sand is widely used to produce concrete and mortar. The sand production has been estimated to be more than 10 billion tons with a total of 1.2 billion tons used in concrete in the last decade, which causes the gradual reduction of available building materials and impacts the environment. Since there are abundant desert sand resources in northwestern China, it would be viable to utilize desert sand as an alternative material for concrete production. In this study, an investigation of dynamic mechanical behaviors of desert sand concrete (DSC) was conducted. Various desert sand replacement ratios (0–100%) were used to replace the equivalent hill sand as fine aggregate. Experimental results showed that strain rate had a strong effect on the dynamic mechanical behaviors of DSC. The compressive strength (at room temperature) and flexural strength (after elevated temperature) increased with desert sand replacement ratio (DSRR) with the optimum replacement ratio of 40%, which was because the increase of DSRR improved the compaction of DSC. However, the effect of the low strength of desert sand was higher than that of the compaction when the DSSR exceeded 40%, so both strength values generally decreased with the increase of DSRR. Moreover, the dynamic constitutive model of DSC at room temperature was established on the basis of a nonlinear visco–elastic constitutive model (ZWT model), which can predict the stress–strain curves of DSC.
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spelling ump-260892019-10-16T08:20:31Z http://umpir.ump.edu.my/id/eprint/26089/ Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures Zhang, Minghu Liu, Haifeng Sun, Shuai Chen, Xiaolong Doh, Shu Ing TA Engineering (General). Civil engineering (General) In the building domain, the non-renewable resource of sand is widely used to produce concrete and mortar. The sand production has been estimated to be more than 10 billion tons with a total of 1.2 billion tons used in concrete in the last decade, which causes the gradual reduction of available building materials and impacts the environment. Since there are abundant desert sand resources in northwestern China, it would be viable to utilize desert sand as an alternative material for concrete production. In this study, an investigation of dynamic mechanical behaviors of desert sand concrete (DSC) was conducted. Various desert sand replacement ratios (0–100%) were used to replace the equivalent hill sand as fine aggregate. Experimental results showed that strain rate had a strong effect on the dynamic mechanical behaviors of DSC. The compressive strength (at room temperature) and flexural strength (after elevated temperature) increased with desert sand replacement ratio (DSRR) with the optimum replacement ratio of 40%, which was because the increase of DSRR improved the compaction of DSC. However, the effect of the low strength of desert sand was higher than that of the compaction when the DSSR exceeded 40%, so both strength values generally decreased with the increase of DSRR. Moreover, the dynamic constitutive model of DSC at room temperature was established on the basis of a nonlinear visco–elastic constitutive model (ZWT model), which can predict the stress–strain curves of DSC. MDPI 2019 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/26089/7/Dynamic%20Mechanical%20Behaviors%20of%20Desert%20Sand.pdf Zhang, Minghu and Liu, Haifeng and Sun, Shuai and Chen, Xiaolong and Doh, Shu Ing (2019) Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures. Applied Sciences, 9 (4151). pp. 1-19. ISSN 2076-3417. (Published) https://doi.org/10.3390/app9194151 https://doi.org/10.3390/app9194151
spellingShingle TA Engineering (General). Civil engineering (General)
Zhang, Minghu
Liu, Haifeng
Sun, Shuai
Chen, Xiaolong
Doh, Shu Ing
Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures
title Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures
title_full Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures
title_fullStr Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures
title_full_unstemmed Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures
title_short Dynamic Mechanical Behaviors of Desert Sand Concrete (DSC) after Different Temperatures
title_sort dynamic mechanical behaviors of desert sand concrete (dsc) after different temperatures
topic TA Engineering (General). Civil engineering (General)
url http://umpir.ump.edu.my/id/eprint/26089/
http://umpir.ump.edu.my/id/eprint/26089/
http://umpir.ump.edu.my/id/eprint/26089/
http://umpir.ump.edu.my/id/eprint/26089/7/Dynamic%20Mechanical%20Behaviors%20of%20Desert%20Sand.pdf