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

页码：292 / 300

页数：9

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