Factors influencing the reactivity of quicklime

被引：10

作者：

Gallala, W. ^{[1
]}

Gaied, M. E. ^{[1
]}

Tlili, A. ^{[1
]}

Montacer, M. ^{[1
]}

机构：

[1] Fac Sci, Earth Sci Dept, Sfax, Tunisia

来源：

PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-CONSTRUCTION MATERIALS | 2008年 / 161卷 / 01期

关键词：

buildings structure & design; geology; research & development;

D O I：

10.1680/coma.2008.161.1.25

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper describes the factors influencing the reactivity of quicklime; namely the chemical composition of the raw material, the calcination and decrepitation processes to manufacture calcium oxide (CaO) and the slaking rate of lime in water. The water composition was also investigated. It was found that the presence of impurities, the tendency to decrepitate and overburning of the lime during calcination dramatically decreased its reactivity. Furthermore, the water chemistry has an important influence on the slaking rate of lime: the presence of chloride in the slaking water increases the hydration rate whereas sulfate and magnesium ions decrease this rate and delay the slaking process.

引用

页码：25 / 30

页数：6

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