Creep-degradation properties of municipal solid waste in laboratory tests

KONG Xian-jing; SUN Xiu-li; ZOU De-gao

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Creep-degradation properties of municipal solid waste in laboratory tests

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- Creep-degradation properties of municipal solid waste in laboratory tests
- Vol. 29, Issue 2, (2008)
- 作者机构：
  
  1. 大连理工大学海岸和近海工程国家重点实验室,大连,116024
  2. 江南大学土木工程学院,江苏,无锡,214122
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：10 July 2013，
  
  Published：2008
- 稿件说明：
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KONG Xian-jing, SUN Xiu-li, ZOU De-gao. Creep-degradation properties of municipal solid waste in laboratory tests[J]. 2008, 29(2).
DOI：

KONG Xian-jing, SUN Xiu-li, ZOU De-gao. Creep-degradation properties of municipal solid waste in laboratory tests[J]. 2008, 29(2). DOI：

摘要

通过室内蠕变-降解对比试验，研究了城市固体废弃物（MSW）的长期变形过程，详细地分析了MSW应变、沉降速率以及孔隙比随时间的变化规律。试验结果显示，考虑有机物降解情况下沉降速率与时间在双对数坐标下呈线性关系；不同的生物降解条件下MSW的变形特性表现出不同的规律。研究表明，MSW的蠕变变形是应力与有机物生物降解耦合作用的结果，采用室内蠕变-降解试验可以很好地模拟垃圾土的沉降变形过程，为室内进一步研究垃圾土的蠕变降解特性提供了很好的依据。

Abstract

In order to investigate the long-term deformation properties of municipal solid waste (MSW)

a series of creep- decomposition comparative tests were conducted in the laboratory under different biodegradation conditions. Based on the experimental results

characteristics of strain changing

void ratio changing

settlement rate changing against time

and the relationship between stress and strain of MSW were studied. The logarithmic settlement rate is linear with respect to the logarithmic time considering degradation of MSW. It can be concluded that the creep properties of MSW is not related with stress but also with decomposition of organic fraction by considering the stress-strain curve. Test results have proved that the creep-decomposition experimental test offered a new method for investigating the deformation properties of MSW in laboratory.

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