Effect of Desert Sand on the Mechanical Properties of Desert Sand Concrete (DSC) after Elevated Temperature
Building fires and shortage of medium sand resources have become two major issues in building domain. Desert sand was used to produce desert sand concrete (DSC), which was suitable for engineering utility. The mechanical properties tests of DSC with different desert sand replacement ratio (DSRR) wer...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/3617552 |
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| author | Yijiang Liu Weiwu Yang Xiaolong Chen Haifeng Liu Ningna Yan |
| author_facet | Yijiang Liu Weiwu Yang Xiaolong Chen Haifeng Liu Ningna Yan |
| author_sort | Yijiang Liu |
| collection | DOAJ |
| description | Building fires and shortage of medium sand resources have become two major issues in building domain. Desert sand was used to produce desert sand concrete (DSC), which was suitable for engineering utility. The mechanical properties tests of DSC with different desert sand replacement ratio (DSRR) were carried out after elevated temperature. The effects of elevated temperature and DSRR on DSC mechanical properties were analyzed. DSC microstructure was investigated by SEM and XRD. Research studies’ results showed that the relative compressive strength increased gradually with increasing temperature. The maximum value appeared at 200°C–300°C, and it began to decrease at 500°C. Compared with room temperature, the compressive strength at 700°C was about 70% of that at room temperature. Relative splitting tensile strength increased first and then decreased, and the value reached the maximum at 100°C. DSC relative flexural strength decreased with the temperature. Relative compressive strength, splitting tensile strength, and flexural strength of DSC enhanced first and then decreased with DSRR, and the maximum values were obtained with 40% DSRR. Based on the regressive analysis, the relative compressive strength was a quadratic polynomial with relative porosity. Relative splitting tensile strength and relative flexural strength were linear with relative porosity. Research results can provide the technical support for DSC engineering application and postfire assessment. |
| format | Article |
| id | doaj-art-09835b9a5c864890adc03d8a1709e477 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-09835b9a5c864890adc03d8a1709e4772025-08-20T02:03:15ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/36175523617552Effect of Desert Sand on the Mechanical Properties of Desert Sand Concrete (DSC) after Elevated TemperatureYijiang Liu0Weiwu Yang1Xiaolong Chen2Haifeng Liu3Ningna Yan4College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaCollege of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaCollege of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaCollege of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaCollege of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, ChinaBuilding fires and shortage of medium sand resources have become two major issues in building domain. Desert sand was used to produce desert sand concrete (DSC), which was suitable for engineering utility. The mechanical properties tests of DSC with different desert sand replacement ratio (DSRR) were carried out after elevated temperature. The effects of elevated temperature and DSRR on DSC mechanical properties were analyzed. DSC microstructure was investigated by SEM and XRD. Research studies’ results showed that the relative compressive strength increased gradually with increasing temperature. The maximum value appeared at 200°C–300°C, and it began to decrease at 500°C. Compared with room temperature, the compressive strength at 700°C was about 70% of that at room temperature. Relative splitting tensile strength increased first and then decreased, and the value reached the maximum at 100°C. DSC relative flexural strength decreased with the temperature. Relative compressive strength, splitting tensile strength, and flexural strength of DSC enhanced first and then decreased with DSRR, and the maximum values were obtained with 40% DSRR. Based on the regressive analysis, the relative compressive strength was a quadratic polynomial with relative porosity. Relative splitting tensile strength and relative flexural strength were linear with relative porosity. Research results can provide the technical support for DSC engineering application and postfire assessment.http://dx.doi.org/10.1155/2021/3617552 |
| spellingShingle | Yijiang Liu Weiwu Yang Xiaolong Chen Haifeng Liu Ningna Yan Effect of Desert Sand on the Mechanical Properties of Desert Sand Concrete (DSC) after Elevated Temperature Advances in Civil Engineering |
| title | Effect of Desert Sand on the Mechanical Properties of Desert Sand Concrete (DSC) after Elevated Temperature |
| title_full | Effect of Desert Sand on the Mechanical Properties of Desert Sand Concrete (DSC) after Elevated Temperature |
| title_fullStr | Effect of Desert Sand on the Mechanical Properties of Desert Sand Concrete (DSC) after Elevated Temperature |
| title_full_unstemmed | Effect of Desert Sand on the Mechanical Properties of Desert Sand Concrete (DSC) after Elevated Temperature |
| title_short | Effect of Desert Sand on the Mechanical Properties of Desert Sand Concrete (DSC) after Elevated Temperature |
| title_sort | effect of desert sand on the mechanical properties of desert sand concrete dsc after elevated temperature |
| url | http://dx.doi.org/10.1155/2021/3617552 |
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