Mechanical and Damping Properties of Recycled Aggregate Concrete Modified with Air-Entraining Agent and Polypropylene Fiber
| Autor: | Wenlong Li, Pei Xingwang, Chonggang Zhou, Yijun Liu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Damping ratio
Materials science Dynamic modulus of elasticity air-entraining agent 0211 other engineering and technologies Modulus 020101 civil engineering 02 engineering and technology lcsh:Technology Article 0201 civil engineering 021105 building & construction Ultimate tensile strength Polypropylene fiber General Materials Science Composite material lcsh:Microscopy damping mechanism lcsh:QC120-168.85 Aggregate (composite) lcsh:QH201-278.5 lcsh:T dynamic behavior static properties Compressive strength interface transition zone lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering Air entrainment lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 recycled aggregate concrete |
| Zdroj: | Materials, Vol 13, Iss 2004, p 2004 (2020) Materials Volume 13 Issue 8 |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13082004 |
| Popis: | In this study, recycled aggregate concrete (RAC) modified with polypropylene fiber (PP) and air-entraining agent (AGA) was prepared, and the effects of PP and AGA on the static (compressive strength, Young&rsquo s modulus, and splitting tensile strength) and dynamic properties (dynamic modulus of elasticity and damping ratio) of RAC were investigated. The experimental results showed that the addition of an AGA and PP had a favorable effect on the damping ratio of the concrete, however, the addition of the AGA had a slightly negative effect on the mechanical performance of the concrete. The AGA and PP contents required to achieve the optimum damping ratio of the concrete with the least reduction in the mechanical performance were 0.02% and 0.10%, respectively. Furthermore, the addition of AGA was more effective than that of PP in improving the damping property of the concrete. |
| Databáze: | OpenAIRE |
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