Properties of concrete made with alkali-activated fly ash lightweight aggregate (AFLA)

被引：84

作者：

Jo, Byung-wan ^{[1
]}

Park, Seung-kook ^{[1
]}

Park, Jong-bin ^{[1
]}

机构：

[1] Hanyang Univ, Dept Civil Engn, Struct Engn Lab, Seoul 133791, South Korea

来源：

CEMENT & CONCRETE COMPOSITES | 2007年 / 29卷 / 02期

关键词：

fly ash; alkali activation; artificial lightweight aggregate; lightweight concrete;

D O I：

10.1016/j.cemconcomp.2006.09.004

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

An experiment was performed to investigate the properties of the hardened paste of fly ash by alkali activation and to determine the possible use of the paste in the production of lightweight aggregates. The highest compressive strength was 33.9 MPa, for paste with 10% NaOH, 15% sodium silicate, and 5% MnO2, cured at room temperature after 24 h of moisture curing at 50 degrees C. The hardened paste of fly ash was granulated to produce AFLA (alkali-activated fly ash lightweight aggregate). AFLA exhibited specific gravity (SSD, OD), water absorption, unit weight, and solid volume percentages of 1.85 (SSD), 1.66 (OD), 11.8%, 972 kg/m(3), and 58.6%, respectively. The results of the heavy metals leaching test met US EPA regulations. The concrete using AFLA exhibited a compressive strength of 26.47 MPa and good freeze-thaw resistance at 6.0% entrained air content. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：128 / 135

页数：8

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