Influence of cement grouts composition on the rheological behaviour

被引：70
|
作者：
Nguyen, Viet-Hung [2 ]
Remond, Sebastien [1 ,3 ]
Gallias, Jean-Louis [4 ]
机构：
[1] EMDouai, MPE GCE, F-59508 Douai, France
[2] Univ Architecture, Fac Civil Engn, Ho Chi Minh City, Vietnam
[3] Univ Lille Nord France, F-59000 Lille, France
[4] Univ Cergy Pontoise, L2MGC, F-95000 Cergy Pontoise, France
来源：
CEMENT AND CONCRETE RESEARCH | 2011年 / 41卷 / 03期
关键词：
Cement; Admixture; Rheology; Grout; Herschel-Bulkley; FRESH CONCRETE; MARSH CONE; VISCOSITY; PASTE; PERFORMANCE; SUSPENSIONS; ADMIXTURES; FLOW; MODELS; SLIP;
D O I：
10.1016/j.cemconres.2010.11.015
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The influence of water to cement ratio, HRWRA content and viscosity modifying admixture content on the rheological characteristics of cement grouts considered as Herschel-Bulkley fluids is studied experimentally. Results show that cement grouts without chemical admixtures and cement grouts containing only a viscosity modifying admixture present a shear-thinning behaviour with an approximately constant value for the exponent n of Herschel-Bulkley model. On the contrary, grouts containing a HRWRA content near the saturation point exhibit quasi Binghamian behaviour. The Herschel-Bulkley model describes properly the rheological behaviour of cement grouts without chemical admixtures. It can be applied correctly to grouts containing HRWRA and/or viscosity modifying admixture in a shear rate range comprised between 4 s(-1) and 100 s(-1) and can be used to predict satisfactorily the Marsh cone flow time of cement grouts of widely varying compositions. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：292 / 300
页数：9
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