Reuse of municipal solid wastes incineration fly ashes in concrete mixtures

被引：69

作者：

Collivignarelli, C ^{[1
]}

Sorlini, S ^{[1
]}

机构：

[1] Univ Brescia, Dept Civil Engn, I-25123 Brescia, Italy

来源：

WASTE MANAGEMENT | 2002年 / 22卷 / 08期

关键词：

D O I：

10.1016/S0956-053X(02)00085-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study is aimed at assessing the feasibility of concrete production using stabilized m.s.w. (municipal solid waste) incineration fly ashes in addition to natural aggregates. The tested fly ashes were washed and milled, then stabilized by a cement-lime process and finally were reused as a "recycled aggregate" for cement mixture production, in substitution of a natural aggregate (with dosage of 200-400 kg m(-3)). These mixtures, after curing, were characterized with conventional physical-mechanical tests (compression, traction, flexure, modulus of elasticity, shrinkage). In samples containing 200 kg(waste) m(-3)(concrete), a good compressive strength was achieved after 28 days of curing, Furthermore, concrete leaching behavior was evaluated by means of different leaching tests, both on milled and on monolithic samples. Experimental results showed a remarkable reduction of metal leaching in comparison with raw waste. In some cases, similar behavior was observed in "natural" concrete (produced with natural aggregates) and in "waste containing" concrete. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：909 / 912

页数：4