Municipal Solid Waste Incineration Fly Ash: From Waste to Cement Manufacturing Resource

被引：11

作者：

Marieta, Cristina ^{[1
]}

Martin-Garin, Alexander ^{[2
]}

Leon, Inigo ^{[2
]}

Guerrero, Ana ^{[3
]}

机构：

[1] Univ Basque Country UPV, Fac Engn Gipuzkoa, Dept Chem & Environm Engn, EHU, Plaza Europa 1, Donostia San Sebastian 20018, Spain

[2] Univ Basque Country UPV, Dept Architecture, EHU, Plaza Onati 2, Donostia San Sebastian 20018, Spain

[3] Eduardo Torroja Inst Construction Sci IETcc CSIC, Serrano Galvache s-n, Madrid 28033, Spain

来源：

MATERIALS | 2023年 / 16卷 / 06期

关键词：

clinker reduction; global warming potential; municipal solid waste; incineration technology; fly ash; life cycle assessment; heavy metals; LIFE-CYCLE ASSESSMENT; BLAST-FURNACE SLAG; PORTLAND-CEMENT; CALCIUM SULFOALUMINATE; PORE STRUCTURE; STABILIZATION; CHLORIDE; REMOVAL; MORTARS; PASTES;

D O I：

10.3390/ma16062538

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This study investigates the possibility of using municipal solid waste incineration fly ash as a supplementary cementitious material to replace part of the clinker in cement. Life cycle assessment has shown that the partial replacement of clinker with blast furnace slag (CEM III) reduces cement's global warming potential by similar to 30%, while replacing clinker with fly ash reduces it by up to 55%. When using CEM III as the control binder in cement in which 55 wt% of the clinker was replaced with hydrothermally treated fly ash, the flexural strength decreased by similar to 60% and the compressive strength by similar to 65%. When the fly ash was mixed with calcined and vitrified demolition materials, flexural strength decreased by similar to 30% and compressive strength by similar to 50%. The hardening of the hydraulic binders fixed the heavy metals in the municipal solid waste incineration fly ash.

引用

页数：18

共 81 条

[41] Influence of the Ca/Si ratio on the compressive strength of cementitious calcium-silicate-hydrate binders [J].