辽宁工程技术大学学报（自然科学版）2023，Vol.42Issue(6)：693-700,8.DOI:10.11956/j.issn.1008-0562.2023.06.008
固化市政污泥作为填埋场覆土的强度特性
Strength characteristics of solidified municipal sludge as landfill cover
摘要
Abstract
In order to solve the problems that a large number of abandoned municipal sludge and waste incineration fly ash occupy landfill space,affect the surrounding environment and cause resource waste,the waste incineration fly ash is used to replace part of the cement to solidify municipal sludge,and the solidified municipal sludge is used as the covering material of landfill.Considering the real landfill environment,the unconfined compressive strength and shear strength tests were carried out to analyze the change rule of strength characteristics of solidified sludge with 0～80%fly ash replacement rate under standard conditions,underwater conditions and dry-wet cycle.The results show that with the increase of fly ash replacement rate,the strength of solidified sludge decreases,and gradually changes from brittle to plastic,and the 28d compressive strength can reach 50 kPa.Under the condition of underwater curing,the strength of solidified sludge in later stage can be significantly improved by waste incineration fly ash.The research conclusions provide a reference for analyzing the possibility of solidified sludge containing waste incineration fly ash as the covering material of landfill.关键词
固化市政污泥/垃圾焚烧飞灰/填埋场覆土/养护条件/强度Key words
solidified sludge/waste incinerates fly ash/landfill cover/curing condition/strength分类
资源环境引用本文复制引用
徐浩青,骆汉轩,陈亮..固化市政污泥作为填埋场覆土的强度特性[J].辽宁工程技术大学学报（自然科学版）,2023,42(6):693-700,8.基金项目
国家自然科学基金项目(42007263) （42007263）
镇江市重点研发计划(社会发展)项目(SH2022017) （社会发展）
住建部科技计划项目(2019-K-136) （2019-K-136）
