垃圾焚烧炉渣混凝土抗压强度试验研究

Experimental Research on Compressive Strength of Waste Incineration Bottom Ash Concrete

本文以生活垃圾焚烧发电厂炉渣作为混凝土粗骨料,研究了垃圾炉渣混凝土的破坏形态、抗压强度与垃圾炉渣粗骨料取代率、水灰比、表观密度之间的关系以及抗压强度的发展趋势。通过对比分析,得到如下结论:垃圾炉渣混凝土的破坏形态与普通混凝土相似,针片状物对抗压强度影响较大;不同水灰比时,垃圾炉渣取代率对混凝土抗压强度影响不同;垃圾炉渣混凝土抗压强度与普通混凝土的抗压强度发展趋势相同;垃圾炉渣混凝土抗压强度与表观密度之间呈线性关系。通过选取最佳的取代率和水灰比可以配制出经济价值较高的C20、C25和C30标号混凝土。

The bottom ash was used as concrete coarse aggregate and study the failure mode of waste incineration bottom ash concrete, the relationship between compressive strength and bottom ash coarse aggregate replacement rate, water cement ratio, apparent density and development trend of compressive strength were studied. The failure mode of waste incineration bottom ash concrete is similar to normal concrete and acicular content has effect on compressive strength. Bottom ash coarse aggregate replacement rate has different effects on compressive strength in different water cement ratio. Compressive strength of waste incineration bottom ash concrete has the same development trend with normal concrete. Compressive strength and apparent density has a linear relation. We can produce economical C20, C25 and C30 concrete by choosing the best bottom ash coarse aggregate replacement rate and water cement ratio.