In-situ XRD Studies of Phase Evolution during Hydration of Portland Cement Paste with Lignosulfonates

被引：0
|
作者：
Danner, Tobias [1 ,2 ]
Justnes, Harald [1 ,2 ]
Geiker, Mette R. [2 ]
Colombo, Alessia [2 ]
机构：
[1] NTNU, Dept Mat Sci, Sem Saelandsvei 12, N-7491 Trondheim, Norway
[2] NTNU, Dept Struct Engn, Sem Saelandsvei 12, N-7491 Trondheim, Norway
来源：
NORDIC CONCRETE RESEARCH | 2014年 / 50卷 / 02期
关键词：
in-situ XRD; Lignosulfonate; Admixtures; Binders;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The effect of two lignosulfonates, one softwood (LSs)- and one hardwood based (LSh), on the early hydration of three Portland cements was studied with isothermal calorimetry and in-situ XRD. In-situ XRD proved to be a good method for detecting the influence of LS on the evolution of single phases during the hydration of cement. In the presence of lignosulfonate the hydration of C3S was retarded while ettringite formation was accelerated. LSh retards the C3S hydration more than LSs, but has less influence on the ettringite formation.
引用
收藏
页码：251 / 254
页数：4
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