In-line rheological measurements of cement grouts: Effects of water/cement ratio and hydration

被引：68

作者：

Rahman, Mashuqur ^{[1
]}

Hakansson, Ulf ^{[1
,2
]}

Wiklund, Johan ^{[3
]}

机构：

[1] Royal Inst Technol, KTH, S-10044 Stockholm, Sweden

[2] Skanska AB, S-16983 Solna, Sweden

[3] Swedish Inst Food & Biotechnol, SIK, S-40229 Gothenburg, Sweden

来源：

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY | 2015年 / 45卷

基金：

瑞典研究理事会;

关键词：

Cement grout; In-line rheology; UVP plus PD; Grouting; Ultrasound velocity profiling; Cement rheology; Hydration; SUSPENSIONS; UVP; RHEOMETRY;

D O I：

10.1016/j.tust.2014.09.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The rheological properties of cement based grouts change with water/cement ratio and time, during the course of hydration. For this reason, it is desirable to be able to measure this change continuously, in-line, with a robust instrument during the entire grouting operation in the field. The rheological properties of commonly used cement grouts were determined using the Ultrasound Velocity Profiling combined with the Pressure Difference (UVP + PD) method. A non-model approach was used that directly provides the properties, and the results were compared with the properties obtained using the Bingham and Herschel-Bulkley rheological models. The results show that it is possible to determine the rheological properties, as well as variations with concentration and time, with this method. The UVP + PD method has been found to be an effective measuring device for velocity profile visualization, volumetric flow determination and the characteristics of the grout pump used. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：34 / 42

页数：9

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