Effect of curing conditions and concrete mix design on the expansion generated by delayed ettringite formation

被引：0
作者：
X. Brunetaud
R. Linder
L. Divet
D. Duragrin
D. Damidot
机构：
[1] Laboratoire Central des Ponts et Chaussées,
[2] Ecole Nationale des Ponts et Chaussées,undefined
[3] Ecole des Mines de Douai,undefined
[4] Polytech’Orléans,undefined
来源：
Materials and Structures | 2007年 / 40卷
关键词：
Concrete; Delayed ettringite formation (DEF); Internal sulfate attack; Expansion; Swelling; Design of experiments; Coupling; Aggregate nature; W/C ratio; Heating temperature; Heating duration; Alkali;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Many studies have shown the effect of different parameters on the expansion induced by delayed ettringite formation (DEF), but there is not yet a general agreement on their relative effects due to discrepancies on experimental results generally attributed to different experimental conditions. The aim of this study is to assess the coupling effects between some of the main parameters of this reaction using the experimental design method. The main interactions concern two factors: temperature and duration of heating during curing. Each interaction has been subjected to statistical tests in order to be validated. The resulting empirical models can reflect the experimental fields and therefore provide useful information about the risk of expansion related to␣DEF, knowing the temperature and the duration of curing, the alkali content of the concrete, the aggregate nature and the water to cement ratio.
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页码：567 / 578
页数：11
相关论文
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