Influence of Coupling Effects of Time and Water-to-Cement Ratio on Rheological Properties of Bingham Cement Grouts

被引：5

作者：

Yang, Zhiquan ^{[1
,2
,3
]}

Chen, Mao ^{[1
,3
]}

Ding, Yi ^{[2
,3
]}

Yang, Yi ^{[2
,3
]}

Zhu, Yingyan ^{[2
,3
,4
]}

Guo, Yanhui ^{[2
,3
]}

Wang, Renchao ^{[5
]}

Zhang, Bihua ^{[6
]}

Fang, Yingchao ^{[7
]}

Yu, Dongliang ^{[7
]}

Mi, Yapeng ^{[8
]}

Su, Jiankung ^{[9
]}

Hao, Liu ^{[9
]}

Zhang, Jie ^{[10
]}

Guo, Yongfa ^{[11
]}

Li, Zhihou ^{[12
]}

Chen, Junzhi ^{[13
]}

Xu, Wanzhong ^{[13
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Civil Engn & Mech, Kunming, Yunnan, Peoples R China

[2] Kunming Univ Sci & Technol, Fac Publ Safety & Emergency Management, Kunming, Yunnan, Peoples R China

[3] Kunming Univ Sci & Technol, Key Lab Early Rapid Identi Ficat Prevent & Contro, Kunming, Yunnan, Peoples R China

[4] Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China

[5] Univ Elect Sci & Technol China, Sch Comp Sci & Engn, Chengdu 611731, Peoples R China

[6] Beijing Fibote Photoelect Technol Co Ltd, Beijing 100083, Peoples R China

[7] PipeChina SouthWest Pipeline Co, Chengdu 610041, Sichuan, Peoples R China

[8] Third Engn Co Ltd China Railway Seventh Bur Grp C, Xian 710026, Peoples R China

[9] Yunnan Aerosp Engn Geophys Detecting Co Ltd, Kunming 650217, Yunnan, Peoples R China

[10] Yunnan Inst Geol Environm Monitoring, Kunming 650216, Yunnan, Peoples R China

[11] Kunming Survey Design & Res Inst Co Ltd, CREEC, Kunming 650200, Yunnan, Peoples R China

[12] Broadvis Engn Consultants, Kunming 650041, Yunnan, Peoples R China

[13] Kunming Univ Sci & Technol, Fac Land Resource Engn, Kunming, Yunnan, Peoples R China

来源：

ADVANCES IN MATERIALS SCIENCE AND ENGINEERING | 2021年 / 2021卷

基金：

中国国家自然科学基金;

关键词：

MECHANICAL-PROPERTIES; YIELD-STRESS; VISCOSITY; CONCRETE; BEHAVIOR; THIXOTROPY;

D O I：

10.1155/2021/5781753

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Time and water-to-cement ratio have significant influences on rheology of cement grouts. In order to study effects of time and water-to-cement ratio on rheology of Bingham cement grouts, taking Bingham cement grouts widely used in practical engineering (cement grouts with water-to-cement ratio of 0.75-1.25) as research object, some rheological experiments of five cement grouts with water-to-cement ratio of 0.8, 0.9, 1.0, 1.1, and 1.25 were carried out at six moments of 0, 5, 10, 20, 30, and 60 minutes, respectively. Combining theoretical discussion with numerical analysis, influence of coupling effects of time and water-to-cement ratio on rheological properties of Bingham cement grouts was discussed. Results show that at the level of alpha = 0.05, time has a significant influence on plastic viscosity but has no significant influence on the yield stress of Bingham cement grouts. Water-tocement ratio has a significant influence on both plastic viscosity and yield stress. Exponential models obtained by comprehensive analysis from statistical theory, practical applicability, and accuracy are the optimal models to describe quantitative change in the relationship of coupling effects of time and water-to-cement ratio on plastic viscosity and yield stress of Bingham cement grouts. The rheological equation considering coupling effects of time and water-to-cement ratio of Bingham cement grouts is constructed. Research achievements not only have certain theoretical significance to the development and improvement of fluid mechanics and theoretical system of penetration grouting but also provide theoretical support and technical reference for practical grouting engineering and also have certain practical significance for solving or improving the practical engineering problems.

引用

页数：10

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