生活垃圾焚烧炉渣在透水混凝土中的应用

Experimental Research on Application of Domestic Waste Incinerator Slag in Pervious Concrete

分析了生活垃圾焚烧炉渣的各项性能指标,并将其经多道水洗、筛分等工艺制成再生骨料,利用再生骨料取代天然砂石制备了透水混凝土。结果表明:生活垃圾焚烧炉渣的粒径分布较优,基本满足Ⅱ类建设用砂标准要求;再生骨料透水混凝土的抗压强度均低于基准组,透水系数均大于10 mm/s;随着再生骨料(处理后)取代率的增加,试件的28 d抗压强度逐渐降低;在取代率为100%的情况下,与未处理再生骨料透水混凝土相比,处理后再生骨料透水混凝土的抗压强度提高了43.1%。

The various indicators of the domestic waste incinerator slag were analyzed,and it was prepared into recycled aggregate through multiple washing,screening and other processes,and the pervious concrete was prepared by using recycled aggregate instead of natural sand.The results show that the domestic waste incinerator slag basically meets the requirements of TypeⅡconstruction sand standard,and the particle size distribution is better.The compressive strength of recycled aggregate pervious concrete is lower than that of reference group.The permeability coefficient of recycled aggregate pervious concrete is greater than 10 mm/s.With the increase of the replacement rate of recycled aggregate(after treatment),the 28 d compressive strength of specimen gradually decreases.When the replacement rate is 100%,compared with the untreated recycled aggregate pervious concrete,the compressive strength of the treated recycled aggregate pervious concrete is increased by 43.1%.