Blending of industrial waste from different sources as partial substitution of Portland cement in pastes and mortars

被引：35
|
作者：
Baeza, F. [1 ]
Paya, J. [2 ]
Galao, O. [1 ]
Saval, J. M. [1 ]
Garces, P. [1 ]
机构：
[1] Univ Alacant, Dept Civil Engn, Alicante 03690, Spain
[2] Univ Politecn Valencia, Inst Concrete Sci & Technol ICITECH, Valencia 46022, Spain
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2014年 / 66卷
关键词：
Waste valorization; Thermogravimetry; Sewage sludge ash; Marble dust; Fly ash; Rice husk ash; SEWAGE-SLUDGE ASH; RICE-HUSK ASH; MECHANICAL-PROPERTIES; COMBUSTION; CATALYST;
D O I：
10.1016/j.conbuildmat.2014.05.089
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Binary and ternary combinations of sewage sludge ash (SSA) with marble dust (MD), fly ash (FA) and rice husk ash (RHA) as replacement in Portland cement pastes, were assessed. Several tests were carried out at different curing ages: thermogravimetry, density, water absorption, ultrasonic pulse velocity and mechanical strengths. Pozzolanic effects of the mineral admixtures, densities similar to control sample and improved absorptions when combining waste materials were identified. In general, the compressive strength reaches or exceeds the cement strength class, and blending SSA, FA and RHA (30% cement replacement) increase of strength by 9%, compared to the control sample, was achieved. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：645 / 653
页数：9
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