再生混凝土抗气渗性及抗碳化性能研究

Study on the Gas Anti-permeability and Carbonation Resistance of Recycled Concrete

摘要:

以废弃混凝土为再生粗集料,再适当掺加一定量的水泥和矿物掺和料,制成再生混凝土.对再生混凝土的抗气渗性和抗碳化性能进行了研究,试验结果表明:再生混凝土的抗气渗性和抗碳化性能之间具有一定的相关性,但该两者均较普通混凝土差.通过加入矿物掺和料,则再生混凝土的抗气渗性和抗碳化性能均可得到改善.

Abstract:

The gas anti-permeability and carbonation resistance of recycled concrete,which was prepared by using waste concrete as recycled coarse aggregate(RCA) and some cement and mineral additions as raw materials,were studied.The results indicate that there are some relativity between the gas anti-permeability and carbonation resistance,and both properties of recycled concrete are worse than those of normal concrete.The poor gas anti-permeability and carbonation resistance of recycled concrete can be offset by mineral additions.