Stability of cement-based grouting slurry and test of its bleeding law

Authors

XU Bin, College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China; Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China; Shaanxi Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology, Xi'an 710077, China
DONG Shuning, College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China; Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China; Shaanxi Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology, Xi'an 710077, ChinaFollow
XU Lulu, College of Construction Engineering, Jilin University, Changchun 130026, China
ZHOU Yan, College of Construction Engineering, Jilin University, Changchun 130026, China
CHEN Junjun, College of Construction Engineering, Jilin University, Changchun 130026, China
DAI Zhenxue, College of Construction Engineering, Jilin University, Changchun 130026, China
WANG Hao, Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China; Shaanxi Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology, Xi'an 710077, China

Abstract

To better understand the stability performance and bleeding property of cement-based grouting slurry, a new test device was improved to get the separated-water thickness value of slurry samples at every time, and these samples were made and sorted according to the certain proportion of the water-solid ratio(0.6:1 to 3:1), fly ash content(0-90%) and sodium silicate content(0-12%). The growth theory for separated-water thickness was introduced, and the growth curves for all formulations were plotted. The slurry stability measurement method was classified, and the equivalence relation between the direct measurement method of slurry stability and the indirect measurement method was verified. The results were as follows:As the water-solid ratio increases, the slurry stability decreases. Fly ash can prolong the final water-separating time of slurry and improve the stability of slurry while sodium silicate can shorten the water-separating time. All the growth curves show a "half-C" shape and the results of indirect measurement and direct measurement are not equivalent.

Keywords

static water condition, cement-based slurry, slurry stability, separated-water thickness, growth curve

DOI

10.3969/j.issn.1001-1986.2019.05.004

Recommended Citation

XU Bin, DONG Shuning, XU Lulu, et al. (2019) "Stability of cement-based grouting slurry and test of its bleeding law," Coal Geology & Exploration: Vol. 47: Iss. 5, Article 5.
DOI: 10.3969/j.issn.1001-1986.2019.05.004
Available at: https://cge.researchcommons.org/journal/vol47/iss5/5

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