冯兴波, 徐永福. 2016: 重复利用的城市垃圾炉渣无侧限抗压强度实验. 工程地质学报, 24(s1): 369-374. DOI: 10.13544/j.cnki.jeg.2016.s1.055
    引用本文: 冯兴波, 徐永福. 2016: 重复利用的城市垃圾炉渣无侧限抗压强度实验. 工程地质学报, 24(s1): 369-374. DOI: 10.13544/j.cnki.jeg.2016.s1.055
    FENG Xingbo, XU Yongfu. 2016: EXPERIMENTAL STUDY ON UNCONFINED COMPRESSIVE STRENGTH OF REUSED MUNICIPAL SOLID WASTES COMBUSTION. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 369-374. DOI: 10.13544/j.cnki.jeg.2016.s1.055
    Citation: FENG Xingbo, XU Yongfu. 2016: EXPERIMENTAL STUDY ON UNCONFINED COMPRESSIVE STRENGTH OF REUSED MUNICIPAL SOLID WASTES COMBUSTION. JOURNAL OF ENGINEERING GEOLOGY, 24(s1): 369-374. DOI: 10.13544/j.cnki.jeg.2016.s1.055

    重复利用的城市垃圾炉渣无侧限抗压强度实验

    EXPERIMENTAL STUDY ON UNCONFINED COMPRESSIVE STRENGTH OF REUSED MUNICIPAL SOLID WASTES COMBUSTION

    • 摘要: 以江苏某城市的垃圾炉渣为实验材料,通过标准分析筛得到粒径小于等于2mm的颗粒,将制样重复利用后的炉渣颗粒配比成不同含水率后,通过分层击实实验制成不同干密度的试样,制样干密度为d=1.4、1.5和1.6的试样,制样模具为高80mm、直径39.1mm。不同干密度的试样分别做龄期为3d、7d、14d、28d无侧限抗压强度试验,其中一种干密度试样在某一龄期做5组实验以降低离散性的影响。通过大量的实验数据,研究重复利用后炉渣颗粒制成试样的强度随龄期、干密度的变化趋势,并与炉渣初次使用时制成的试样强度进行对比,得出炉渣的强度具有一定的离散性,但总体上随龄期和干密度的增加而增加,且炉渣颗粒重复利用后制成的试样强度有很明显的降低。对炉渣材料做XRD分析,以获得炉渣的主要组成成分来更好的理解炉渣试样的强度特性。文中得出的结论为更好的将炉渣应用到具体的工程中提供参考意见。

       

      Abstract: The slag used in experimental study got from a city of JiangSu Province municipal solid waste incinerator(MSWI)were sieved through standard analysis sieve to get particles smaller then 2mm in diameter. Some of the particles used in experiment were used before. First different moisture content of reused MSWI were got by mixing the particles of slag with water, then samples with sizes 80mm in height and 39.1mm in diameter of different dry density which were 1.4, 1.5 and 1.6 were made through hierarchical compaction. Unconfined strength test of samples with different dry density and different curing age of 3d, 7d, 14d, 28d, 45d and 60d were studied, and 5 experiments were done to a kind of dry density in a certain curing age in order to reduce the impact of discrete. Through a large number of experimental data, the unconfined compressive strength increases with dry density and moisture content despite of the discreteness but much smaller than the samples made by slag not used before. And the XRD analysis of the slag was done to get the main components of the slag in order to obtain a better understanding of the strength characteristics of the slag sample. The results obtained in this paper provide a reference for the better application of slag to concrete projects.

       

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