Mechanical Properties of Recycled Aggregate Concrete at Low and High Water/Binder Ratios
This paper presents an experimental research on mechanical properties of recycled aggregate concrete (RAC) at low and high water/binder (W/B) ratios. Concrete at two W/B ratios (0.255 and 0.586) was broken into recycled concrete aggregates (RCA). A type of thermal treatment was employed to remove mo...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2013/842929 |
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| author | Gai-Fei Peng Yan-Zhu Huang Hai-Sheng Wang Jiu-Feng Zhang Qi-Bing Liu |
| author_facet | Gai-Fei Peng Yan-Zhu Huang Hai-Sheng Wang Jiu-Feng Zhang Qi-Bing Liu |
| author_sort | Gai-Fei Peng |
| collection | DOAJ |
| description | This paper presents an experimental research on mechanical properties of recycled aggregate concrete (RAC) at low and high water/binder (W/B) ratios. Concrete at two W/B ratios (0.255 and 0.586) was broken into recycled concrete aggregates (RCA). A type of thermal treatment was employed to remove mortar attached to RCA. The RAC at a certain (low or high) W/B ratio was prepared with RCA made from demolished concrete of the same W/B ratio. Tests were conducted on aggregate to measure water absorption and crushing values and on both RAC and natural aggregate concrete (NAC) to measure compressive strength, tensile splitting strength, and fracture energy. The mechanical properties of RAC were lower than those of NAC at an identical mix proportion. Moreover, the heating process caused a decrease in compressive strength and fracture energy in the case of low W/B ratio but caused an increase in those properties in the case of high W/B ratio. The main type of flaw in RCA from concrete at a low W/B ratio should be microcracks in gravel, and the main type of flaw in RCA from concrete at a high W/B ratio should be attached mortar. |
| format | Article |
| id | doaj-art-c1ee58efac964007903f423daef5bc0f |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-c1ee58efac964007903f423daef5bc0f2025-08-20T02:19:15ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422013-01-01201310.1155/2013/842929842929Mechanical Properties of Recycled Aggregate Concrete at Low and High Water/Binder RatiosGai-Fei Peng0Yan-Zhu Huang1Hai-Sheng Wang2Jiu-Feng Zhang3Qi-Bing Liu4Faculty of Civil Engineering, Beijing JiaoTong University, Beijing 100044, ChinaBBMG Cement Energy Saving Technology Co., Ltd, Beijing 102403, ChinaBeijing Building Materials Inspecting and Testing Center, Beijing 100041, ChinaFaculty of Civil Engineering, Beijing JiaoTong University, Beijing 100044, ChinaFaculty of Civil Engineering, Beijing JiaoTong University, Beijing 100044, ChinaThis paper presents an experimental research on mechanical properties of recycled aggregate concrete (RAC) at low and high water/binder (W/B) ratios. Concrete at two W/B ratios (0.255 and 0.586) was broken into recycled concrete aggregates (RCA). A type of thermal treatment was employed to remove mortar attached to RCA. The RAC at a certain (low or high) W/B ratio was prepared with RCA made from demolished concrete of the same W/B ratio. Tests were conducted on aggregate to measure water absorption and crushing values and on both RAC and natural aggregate concrete (NAC) to measure compressive strength, tensile splitting strength, and fracture energy. The mechanical properties of RAC were lower than those of NAC at an identical mix proportion. Moreover, the heating process caused a decrease in compressive strength and fracture energy in the case of low W/B ratio but caused an increase in those properties in the case of high W/B ratio. The main type of flaw in RCA from concrete at a low W/B ratio should be microcracks in gravel, and the main type of flaw in RCA from concrete at a high W/B ratio should be attached mortar.http://dx.doi.org/10.1155/2013/842929 |
| spellingShingle | Gai-Fei Peng Yan-Zhu Huang Hai-Sheng Wang Jiu-Feng Zhang Qi-Bing Liu Mechanical Properties of Recycled Aggregate Concrete at Low and High Water/Binder Ratios Advances in Materials Science and Engineering |
| title | Mechanical Properties of Recycled Aggregate Concrete at Low and High Water/Binder Ratios |
| title_full | Mechanical Properties of Recycled Aggregate Concrete at Low and High Water/Binder Ratios |
| title_fullStr | Mechanical Properties of Recycled Aggregate Concrete at Low and High Water/Binder Ratios |
| title_full_unstemmed | Mechanical Properties of Recycled Aggregate Concrete at Low and High Water/Binder Ratios |
| title_short | Mechanical Properties of Recycled Aggregate Concrete at Low and High Water/Binder Ratios |
| title_sort | mechanical properties of recycled aggregate concrete at low and high water binder ratios |
| url | http://dx.doi.org/10.1155/2013/842929 |
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