张 涛,赵增增
城市生活垃圾焚烧底灰混凝土耐久性研究
张 涛,赵增增
摘 要:将30%质量的城市固体废物焚烧(MSWI)底灰掺入混凝土中替代水泥,通过对底灰混凝土的收缩率,抗碳化性、抗渗性、抗冻性等进行试验,并与普通混凝土进行对比,研究了底灰作为水泥替代物的可行性。研究结果表明,测试的垃圾焚烧底灰具有一定的火山灰活性,一定范围内掺加底灰的混凝土具有较小的收缩率,抗碳化性、抗渗性、抗冻性能优异,底灰的引入可以改善混凝土的耐久性。
Abstract:Using 30% municipal solid waste incineration (MSWI) bottom ash to replace cement in concrete, the shrinkage, carbonation resistance, impermeability, frost resistance of the bottom ash concrete are tested. Compared with ordinary concrete, the feasibility of the bottom ash as the cement substitute is studied. The study results show that the waste incineration bottom ash has a certain ash activity. The concrete with a certain amount of bottom ash has a smaller shrinkage rate and better performances of carbonation resistance, impermeability, frost resistance. Adding the bottom ash in the concrete can improve the durability of concrete.
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