Optimization and Characterization of Mechanical Properties in Straw-Reinforced Cementitious Composites
This study aimed to reduce the environmental impact of rapeseed straw accumulation and explore its engineering potential by examining how straw affects the mechanical properties of cement–sand composites. Experiments were conducted using varying straw dosages and curing ages to assess water consumpt...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-02-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/5/767 |
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| author | Baohua Liu Dongping Han Fan Zhang Junqi Zhang Liang Fang |
| author_facet | Baohua Liu Dongping Han Fan Zhang Junqi Zhang Liang Fang |
| author_sort | Baohua Liu |
| collection | DOAJ |
| description | This study aimed to reduce the environmental impact of rapeseed straw accumulation and explore its engineering potential by examining how straw affects the mechanical properties of cement–sand composites. Experiments were conducted using varying straw dosages and curing ages to assess water consumption, setting time, flexural and compressive strengths, pore characteristics (via mercury intrusion), hydration products, and microstructures (via thermogravimetry and X-ray diffraction). Results showed that flexural and compressive strengths decreased with higher straw content, most notably up to 2%, but increased with age due to straw’s water absorption, which altered cement hydration and porosity. Over time, enhanced hydration and pore filling improved strength. This research supports straw’s use in civil engineering and advances eco-friendly concrete material development. |
| format | Article |
| id | doaj-art-0e6a66798c244e25b9db0cef64698b86 |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-0e6a66798c244e25b9db0cef64698b862025-08-20T02:53:22ZengMDPI AGBuildings2075-53092025-02-0115576710.3390/buildings15050767Optimization and Characterization of Mechanical Properties in Straw-Reinforced Cementitious CompositesBaohua Liu0Dongping Han1Fan Zhang2Junqi Zhang3Liang Fang4College of Water Resources & Civil Engineering, Hunan Agricultural University, Changsha 410128, ChinaCollege of Water Resources & Civil Engineering, Hunan Agricultural University, Changsha 410128, ChinaCollege of Accounting, Hunan University of Finance and Economics, Changsha 410215, ChinaCollege of Water Resources & Civil Engineering, Hunan Agricultural University, Changsha 410128, ChinaCollege of Water Resources & Civil Engineering, Hunan Agricultural University, Changsha 410128, ChinaThis study aimed to reduce the environmental impact of rapeseed straw accumulation and explore its engineering potential by examining how straw affects the mechanical properties of cement–sand composites. Experiments were conducted using varying straw dosages and curing ages to assess water consumption, setting time, flexural and compressive strengths, pore characteristics (via mercury intrusion), hydration products, and microstructures (via thermogravimetry and X-ray diffraction). Results showed that flexural and compressive strengths decreased with higher straw content, most notably up to 2%, but increased with age due to straw’s water absorption, which altered cement hydration and porosity. Over time, enhanced hydration and pore filling improved strength. This research supports straw’s use in civil engineering and advances eco-friendly concrete material development.https://www.mdpi.com/2075-5309/15/5/767strawcement mortarmechanical propertiesphysical propertyhydration characteristics |
| spellingShingle | Baohua Liu Dongping Han Fan Zhang Junqi Zhang Liang Fang Optimization and Characterization of Mechanical Properties in Straw-Reinforced Cementitious Composites Buildings straw cement mortar mechanical properties physical property hydration characteristics |
| title | Optimization and Characterization of Mechanical Properties in Straw-Reinforced Cementitious Composites |
| title_full | Optimization and Characterization of Mechanical Properties in Straw-Reinforced Cementitious Composites |
| title_fullStr | Optimization and Characterization of Mechanical Properties in Straw-Reinforced Cementitious Composites |
| title_full_unstemmed | Optimization and Characterization of Mechanical Properties in Straw-Reinforced Cementitious Composites |
| title_short | Optimization and Characterization of Mechanical Properties in Straw-Reinforced Cementitious Composites |
| title_sort | optimization and characterization of mechanical properties in straw reinforced cementitious composites |
| topic | straw cement mortar mechanical properties physical property hydration characteristics |
| url | https://www.mdpi.com/2075-5309/15/5/767 |
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