Influence of Fine Recycled Aggregate on Physical and Mechanical Properties of Concrete

SUN Jia-ying; CHE Cheng-cheng

doi:10.11835/j.issn.1674-4764.2011.03.025

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Influence of Fine Recycled Aggregate on Physical and Mechanical Properties of Concrete

更新时间：2023-11-28

- Influence of Fine Recycled Aggregate on Physical and Mechanical Properties of Concrete
- Journal of Civil and Environmental Engineering Vol. 33, Issue 3, Pages: 143-146(2011)
- 作者机构：
  
  1. 浙江大学宁波理工学院绿色建材与废弃物资源化研究中心,宁波,315100
  2. 上海大学土木工程系,上海,20072
- 作者简介：
- 基金信息：
- DOI：10.11835/j.issn.1674-4764.2011.03.025
  CLC：
- Published：2011
- 稿件说明：
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SUN Jia-ying, CHE Cheng-cheng. Influence of Fine Recycled Aggregate on Physical and Mechanical Properties of Concrete[J]. Journal of Civil and Environmental Engineering, 2011, 33(3): 143-146.
DOI：

SUN Jia-ying, CHE Cheng-cheng. Influence of Fine Recycled Aggregate on Physical and Mechanical Properties of Concrete[J]. Journal of Civil and Environmental Engineering, 2011, 33(3): 143-146. DOI： 10.11835/j.issn.1674-4764.2011.03.025.

摘要

废弃混凝土通过一系列再生工艺可以得到再生混凝土细集料

将其部分或全部替代天然砂配制混凝土可以达到变废为宝的目的

但是再生混凝土细集料特殊的性质会使得掺再生细集料的混凝土性能与普通混凝土之间存在较大的差异.在研究再生混凝土细集料的粒径和物理特性对水泥混凝土物理力学性能影响的基础上

探讨再生混凝土细集料对混凝土的抗气渗性能、抗氯离子渗透性能、抗碳化性能的影响.研究结果发现

再生细集料在破碎制备过程中产生了大量缺陷和粉料

采用一定量的再生细集料替代天然细集料配制混凝土

其物理力学性能、抗氯离子渗透性能和抗碳化能力均与基准混凝土有明显差异.如再生细集料最小粒径从0.16 mm及以下提高到2.36 mm就可以明显改善混凝土物理力学性能.

Abstract

Based on a series of recycle process

waste concrete can be made into fine recycled aggregate which can be used completely or partly to compound concrete as a substitute for natural sand. But the special properties of fine recycled aggregate make the performance of concrete with fine recycled aggregate different from normal concrete. Characteristics of fine recycled aggregate and its influence on physical and mechanical properties of concrete are studied. On this basis

the influence of fine recycled aggregate on gas permeation properties

chloride permeability

and carbonation resistance of concrete are also studied. It is found that fine recycled aggregate produces a lot of defects in crushing preparation. And the compressive strength

the chloride permeability and the carbonation resistance of the concrete with fine recycled aggregate as substitution show difference from that of normal concrete.

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