Reuse of woody biomass fly ash in cement-based materials

被引：133

作者：

Berra, Mario ^{[1
]}

Mangialardi, Teresa ^{[2
]}

Paolini, Antonio Evangelista ^{[2
]}

机构：

[1] Ric Sistema Energet RSE SpA, I-20134 Milan, Italy

[2] Univ Roma La Sapienza, Dept Chem Mat Environm Engn, I-00184 Rome, Italy

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 76卷

关键词：

Woody biomass fly ash; Mineral admixture; Filler; Blended cement; Concrete; Workability; Setting; Compressive strength; SELF-COMPACTING CONCRETE; WASTE ASH; REPLACEMENT MATERIAL; SAWDUST ASH; MORTAR;

D O I：

10.1016/j.conbuildmat.2014.11.052

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The reuse of woody biomass fly ash (WBFA) as a mineral admixture or as a filler/partial sand replacement material in cementitious mixes was investigated. Three different WBFAs were used, two coming from virgin wood and one from treated wood combustion. The physical and chemical characteristics of these ashes and the technological properties (workability, setting, compressive strength) of cementitious mixes incorporating WBFA were evaluated. It was found that, in spite of the satisfactory technological properties exhibited by most related blended cements, the studied WBFAs did not meet the UNI EN 450-1 requirements for reuse as mineral admixtures, even if they were subjected to a preliminary water-washing treatment. The reuse of raw wood fly ash as a filler/partial sand replacement material was found to be satisfactory and possible for low-quality concrete. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：286 / 296

页数：11

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