Arm Maria
Swedish Geotechnical Institute (SGI), SE-581 93 Linköping, Sweden.
Waste Manag. 2004;24(10):1035-42. doi: 10.1016/j.wasman.2004.07.013.
This study is part of a larger study of the mechanical properties of processed municipal solid waste incinerator bottom ash. The aim was to investigate the variation in deformation properties of the ash for future use in unbound road layers. The effect of the material variation was analysed in particular. Specimens of bottom ash from four different incinerator plants and four sampling periods over a period of one year were tested by means of cyclic load triaxial tests. The results showed that there were variations in the deformation properties of the materials. Although there were significant differences between incinerator plants, the seasonal fluctuations were not significant. The differences were mainly due to the organic matter content. For the cyclic stress levels used, the resilient modulus ranged between 60 and 140 MPa, which is comparable to that of sand, but the plastic/permanent deformation was lower than for sand. It was also shown that the organic content has a limiting effect on the resilient modulus. For the material studied, the resilient modulus increased by 50% when the content of organic matter was halved.
本研究是对处理后的城市固体废弃物焚烧炉底灰力学性能进行的一项规模更大研究的一部分。其目的是调查这种灰的变形特性变化，以便未来用于无结合料道路层。特别分析了材料变化的影响。通过循环荷载三轴试验对来自四个不同焚烧厂的底灰样本以及在一年时间内的四个采样期进行了测试。结果表明，材料的变形特性存在差异。虽然焚烧厂之间存在显著差异，但季节性波动并不显著。这些差异主要归因于有机物含量。对于所使用的循环应力水平，回弹模量在60至140兆帕之间，这与沙子的回弹模量相当，但塑性/永久变形低于沙子。研究还表明，有机物含量对回弹模量有限制作用。对于所研究的材料，当有机物含量减半时，回弹模量增加了50%。
