The lithium nitrate effect on the concrete expansion caused by alkali-silica reaction in concrete of gravel aggregate

被引：0

作者：

Owsiak, Z. ^{[1
]}

Zapala-Slaweta, J. ^{[1
]}

机构：

[1] Politech Swietokrzyska, Wydzial Budownictwa & Architektury, Kielce, Poland

来源：

CEMENT WAPNO BETON | 2015年 / 20卷 / 01期

关键词：

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Preventing of the concrete expansion caused by the alkali-silica reaction in the case of gravel aggregate is a particularly complex issue, due to the complexity of its mineral composition. Addition to the concrete of lithium nitrate is one of the method of decreasing of the destructive expansion. In the paper the results of investigation of the mortars produced from reactive gravel aggregate with the lithium nitrate addition is presented. The mortars samples were produced from Portland cement with different alkalis content of 0.66%, 0.9% and 1.1% of Na2Oe. The results are showing that the lithium nitrate addition, representing the molar ratio Li/Na+K equal to 0.74, drastically decrease the expansion, which is on the significantly lower level to the threshold value given in ASTM C227 standard.

引用

页码：25 / +

页数：8

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