Materials Reports  2020, Vol. 34 Issue (Z2): 206-211 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Feasibility of Utilizing Recycled Aggregate Concrete for Revetment Engineering |
| CHANG Honglei1, CHEN Fanyu2, JIN Zuquan3, WANG Guangyue2, LIU Jian1
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1 School of Qilu Transportation, Shandong University, Jinan 250002, China
2 School of Civil Engineering, Shandong University, Jinan 250061, China
3 School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China |
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Abstract Local recycled aggregates in revetment of the lower Yellow River were used to design a series of concrete mix ratios to comprehensively evaluate the compressive strength, flexural strength, frost resistance and carbonization resistance. By testing the compressive strength of recycled concrete with different ratio of single coarse aggregate, single fine aggregate and mixed coarse and fine aggregate, the mixing ratios of compressive strength greater than 40 MPa and the replacement rate of recycled aggregates not less than 50% are preferred: RSF50, RSF70, RSF100. The experimental results show that the mechanical properties, frost resistance and carbonization resistance of the preferred three mix ratio recycled concrete are generally weaker than normal concrete, but all can meet the performance requirements of slope protection projects in the lower Yellow River. The comprehensive performance of the three mix ratios is ranked as follows: RSF50>RSF70>RSF100. Considering the replacement rate of recycled aggregate, RSF70 has the best comprehensive performance, which is recommended for the preparation of slope protection blocks and for application in actual bank protection projects.
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Published: 08 January 2021
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| Fund:This work was financially supported by the National Natural Science Foundation Youth Fund of China (51908327), the Shandong Natural Science Foundation Youth Fund of Shandong Province of China (ZR2019QEE017). |
| About author:: Honglei Chang received his Ph. D. degree in March 2018 from Southeast University in materials science and engineering teacher in Shandong University, master tutor, assistant research fellow of Qilu Jiaotong University. Mainly engaged in the preparation, durability and degradation mechanism of cement-based materials. He has published 16 academic papers, including more than 10 SCI and EI papers and 2 authorized patents. Reviewer of many top international journals in the field of civil engineering materials.Jian Liu received his Ph. D. degree in water conservancy and hydropower engineering from Tianjin University in 2005. Professor and doctoral supervisor of Shandong University. Mainly engaged in intelligent detection of traffic infrastructure, calculation and analysis of geotechnical structure, safety assessment and monitoring. He has published more than 30 academic papers, including more than 20 papers included in SCI and EI, and 12 patents authorized for the first time. |
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