Utilization of municipal solid waste incineration bottom ash in blended cement

被引：239
|
作者：
Li, Xiang-Guo [1 ]
Lv, Yang [1 ]
Ma, Bao-Guo [1 ]
Chen, Quan-Bin [1 ]
Yin, Xiao-Bo [1 ]
Jian, Shou-Wei [1 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China
来源：
JOURNAL OF CLEANER PRODUCTION | 2012年 / 32卷
基金：
中国国家自然科学基金;
关键词：
MSWI bottom ash; Pulverized coal fly ash (PFA); Blended cement; Strength; Hydration characteristics; Leaching toxicity; LIFE-CYCLE ASSESSMENT; MSWI FLY-ASH; AGGREGATE; DISPOSAL; ENERGY;
D O I：
10.1016/j.jclepro.2012.03.038
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The objective of this study was to assess the feasibility of application of municipal solid waste incineration (MSWI) bottom ash as a supplementary cementitious material for the preparation of blended cement. The water demand for normal consistency, setting time, strength and hydration characteristics of MSWI bottom ash-cement compound matrices were investigated. The results show that the MSWI bottom ash has some cementitious activity, but the reactivity is relatively lower than Portland cement and its addition to cement may lead to retardation of cement hydration. The incorporation content of MSWI bottom ash in blended cements was controlled below 30%, which resulted in blended cement of strength class 32.5 according to GB 175-2007 (Chinese National Standard). It is also evident that heavy metal concentrations in leachates of the blended cements with MSWI bottom ash are far lower than recommended in the GB5085.3-2007. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：96 / 100
页数：5
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