The Effect Of Slate Powder On Fly Ash In Suppressing Alkali Activity Of Slate Aggregate

被引：1
|
作者：
Zhang, Longsheng [1 ]
Li, Guhua [1 ]
Wu, Huang [2 ]
He, Xiaochun [2 ]
Jiang, Fang [2 ]
Liu, Tongchao [1 ]
机构：
[1] Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Peoples R China
[2] Engn Grp Co Ltd, Guiyang 550003, Peoples R China
来源：
ARCHITECTURE, BUILDING MATERIALS AND ENGINEERING MANAGEMENT, PTS 1-4 | 2013年 / 357-360卷
关键词：
slate powder; fly ash; slate aggregate; alkali-silica reaction (ASR);
D O I：
10.4028/www.scientific.net/AMM.357-360.1450
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Slate has high alkali activity.When broken as aggregate, it produce high content of slate powder.In order to study the effect of slate powder on fly ash in suppressing alkali activity of slate aggregate and the possibility of making full use of the powder,we carried the experiment on rapid mortar bar method.The experimental results show that: 1. When the content of slate powder is less than 15%, it has no adverse effect on fly ash in suppressing alkali activity of slate aggregate. When the content of slate powder is greater than 15%,it can increase the effect of suppression.2. For alkali-silica reaction,what really suppress it is the active SiO2 that comes from slate powder or fly ash.As long as the mineral admixture containing active SiO2 grinds fine to the fineness of cement particle, it can increase the effect of suppression on fly ash in suppressing alkali activity of slate aggregate, rather than reduces the suppressive effect.
引用
收藏
页码：1450 / +
页数：2
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