矿物掺合料对低水胶比浆体流变性能的影响机制研究

doi:10.11896/cldb.19040002

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (2674KB)

Suppl. Info.
Export: BibTeX | EndNote (RIS)

Abstract The effect of silica fume, fly ash and ground slag on rheological properties of cement paste with low water-binder ratio was investigated. In order to study its mechanism, the minimum water demand method was employed to test wet packing density of particles in paste and the water film thickness on the surface of particles. The results show that cement paste with low water-binder ratio showed typical shear-thickening beha-vior. The addition of silica fume increased yield stress and viscosity, decreased the exponent n, and then the paste exhibited a shear-thinning behavior. The addition of fly ash decreased yield stress and viscosity, but had no significant effect on the exponent n. Water film thickness, which could evaluated the combined effects of packing density and solid surface area, was one of the key factors affecting rheological properties of paste, and yield stress and viscosity decreased with the decreasing of water film thickness. Water film thickness decreased with the increasing silica fume content, but increased with the addition of fly ash and ground slag.

Key words： cement paste mineral admixture rheological properties packing density water film thickness

Published: 02 December 2020

CLC number:

TU528

Fund:This work was financially supported by the National Key Research and Development Program (2018YFC0705400).

About author:: Qianqian Zhangreceived her M.S. degrees in mate-rials from Southeast University in 2010. She is currently a senior engineer in Jiangsu Sobute New Materials Co. Ltd., and engages in rheological properties of concrete.

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHANG Qianqian
	LIU Jianzhong
	ZHANG Lihui
	LIU Jiaping

Cite this article:

ZHANG Qianqian,LIU Jianzhong,ZHANG Lihui, et al. Effect of Mineral Admixtures on Rheological Properties of Paste with Low Water-Binder Ratio and Its Mechanism[J]. Materials Reports, 2020, 34(22): 22054-22057.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.19040002 OR http://www.mater-rep.com/EN/Y2020/V34/I22/22054

Kaplan D, de Larrard F, Sedran T. ACI Materials Journal, 2005, 102(2),110.2 Choi M, Roussel N, Kim Y, et al. Cement and Concrete Research, 2013, 45, 69.3 Wu Z, Lian H. High Performance Concrete, China Railway Publishing House, China, 1999(in Chinese).吴中伟, 廉慧珍. 高性能混凝土, 中国铁道出版社, 1999.4 Long G, Wang X, Xiao M. Journal of the Chinese Ceramic Society, 2002, 30(2),139(in Chinese).龙广成, 王新友, 肖瑞敏. 硅酸盐学报, 2002, 30(2), 139.5 Ferraris C F, Obla K H, Hill R. Cement & Concrete Research, 2001, 31(2),245.6 Ghoddousi P, Javid A A S, Sobhani J. Construction & Building Mate-rials, 2014, 53(4),102.7 Zhang Q, Liu J, Liu J. Applied Mechanics & Materials, 2013, 438-439,67.8 Feys D, Verhoeven R, De Schutter G. Cement and Concrete Research, 2009, 39(6), 510.9 Feys D, Khayat K H, Perez-Schell A, et al. Cement and Concrete Composites, 2014, 54(11), 40.10 Feys D, Khayat K H, Perez-Schell A, et al. Cement and Concrete Composites, 2015, 57,102.11 Ma K, Long G, Xie Y, et al. Journal of the Chinese Ceramic Society, 2013, 41(11),1481(in Chinese).马昆林, 龙广成, 谢友均, 等. 硅酸盐学报, 2013,41(11), 1481.12 Xie Y, Chen X, Ma K, et al. Journal of Building Materials, 2015, 18(5),824(in Chinese).谢友均, 陈小波, 马昆林, 等.建筑材料学报, 2015, 18(5),824.13 De Larrard F. Concrete mixture proportioning: a scientific approach, CRC Press, France, 1999.14 Liu J. Preparation and static, dynamic mechanical behavior of ultra-high performance concrete. Ph.D. Thesis, Southeast University, China, 2013(in Chinese).刘建忠. 超高性能混凝土的制备基础及静、动态力学行为. 博士学位论文, 东南大学, 2013.15 Xie H. Mechanics and process engineering of powder and particles, Chemical Industry Press, China, 2007(in Chinese).谢洪勇. 粉体力学与工程, 化学工业出版社, 2007.16 Kwan A K H, Wong H H C. Advances in Cement Research,2008,20,1.17 Kwan A K H, Fung W W S. Cement & Concrete Composites, 2012, 34(2),121.18 Zhang C Z, Wang A, Tang M S, et al. Cement and Concrete Research, 1996, 26(6),943.19 Krieger I M, Dougherty T J. Transactions of the Society of Rheology, 1959, 3,137.20 Struble L, Sun G K. Advanced Cement Based Materials, 1995, 2(2), 62.21 Li Z, Peng J, Yang Z. Materials Review B:Research Papers, 2017, 31(6), 115(in Chinese).李志坤, 彭家惠, 杨再富. 材料导报:研究篇, 2017, 31(6),115.22 Liu J, Wang K, Zhang Q, et al. Construction & Building Materials, 2017, 149,359.23 Flatt R J, Bowen P. Journal of the American Ceramic Society, 2010, 89(4),1244.24 Perrot A, Lecompte T, Khelifi H, et al. Cement & Concrete Research, 2012, 42(7),937.