工程地质学报2017，Vol.25Issue(2)：277-283,7.DOI:10.13544/j.cnki.jeg.2017.02.002
生活垃圾焚烧炉渣在饱和状态下的强度特性
SHEAR STRENGTH OF SATURATED BOTTOM ASH FROM MUNICIPAL SOLID WASTE INCINERATOR (MSWI)
摘要
Abstract
Shear strength of saturated MSWI bottom ash increases with age due to its activity.In this paper,shear strength of saturated MSWI bottom ash is measured using triaxial tests.The confining pressures are 50kPa,100kPa,200kPa and 400kPa,respectively.The dry densities of tested samples of saturated MSWI bottom ash are 1.4g·cm-3,1.5g·cm-3and 1.6g·cm-3.Their ages are 3d,7d,14d and 28d,respectively.The results of triaxial tests show that the failure modes of saturated MSWI bottom ash in triaxial tests are affected by cured ages and confining pressures.The samples with age less than 14d undergo brittle failure at confining pressure less 200kPa.The envelope of Mohr-Coulomb criterion is not a straight line.Two straight lines exist in the plane of σ1-σ3 at demarcation point of σ3 =200kPa.Thus,the regressing maximum principal stress with minor principal stress is suitable to estimate shear strength parameters using triaxial tests.关键词
生活垃圾焚烧炉渣/三轴试验/内摩擦角/黏聚力/Mohr-Coulomb强度准则Key words
Municipal solid waste incinerator(MSWI)/Triaxial test/Internal frictional angle/Cohesion/Mohr-Coulomb criterion分类
天文与地球科学引用本文复制引用
徐永福..生活垃圾焚烧炉渣在饱和状态下的强度特性[J].工程地质学报,2017,25(2):277-283,7.基金项目
国家自然科学基金重点项目(41630633),国家自然科学基金面上项目(41472251,41272318)资助. （41630633）
