Effects of aqueous-phase speciation on Portland cement and supplementary cementitious materials as reflected using zeta potential of powder suspensions

doi:10.1016/j.conbuildmat.2022.128258

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	Effects of aqueous-phase speciation on Portland cement and supplementary cementitious materials as reflected using zeta potential of powder suspensions
	Rusheng, Qian 1,2; Yunsheng, Zhang 2,3; Yu, Zhang 2; Cheng, Liu 3; Lin, Yang 4; Deyu, Kong 1
刊名	Construction and Building Materials
	2022-08-22
卷号	345
关键词	Blast furnaces Fly ash Hydrated lime Hydration Ions Lime Portland cement Silica fume Slags Suspensions (fluids) Aqueous phasis Cementitious materials Cementitious powders Ground granulated blast furnace slag Ion concentrations Ion strengths Leaching time Powder suspension Pure water Supplementary cementitious material
ISSN号	0950-0618
DOI	10.1016/j.conbuildmat.2022.128258
英文摘要	The zeta-potential of cementitious powder suspension is significant for its cement hydration and highly depends on its soluble components. In this work, the suspension zeta-potentials of Portland cement (PC), ground granulated blast-furnace slag (GGBS), fly ash (FA) and silica fume (SF) were examined in pure-water (PW) and saturated calcium-hydroxide (CH) along with 0 ∼ 24 h. The corresponding ion-concentration was examined for analyzing its effects on zeta-potential. The results manifested that the inchoative-charges of PC, GGBS, FA and SF in PW respectively were +1.50 mV, −0.28 mV, +0.48 mV and −0.27 mV while the inchoative charge-reversal occurred when their powders were dispersed in CH. The ion-strength magnitude of PC, GGBS, FA and SF in PW and CH were both in the decreasing order of PC > FA > SF > GGBS, and CH solvent improved their ion-strengths. The Zeta-potential of PC suspension reduced with the increasing ion-strength while the relationships between Zeta-potential and ion-strength of SCMs increased first and then decreased with the threshold of approximately 40 mmol/L. © 2022 Elsevier Ltd
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159140]
专题	兰州理工大学
作者单位	1.College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou; 310023, China; 2.College of Civil Engineering, Lanzhou University of Technology, Gansu Province, 730050, China; 3.Jiangsu Key Laboratory for Construction Materials, Southeast University, Nanjing; 211189, China; 4.School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou; 450001, China
推荐引用方式 GB/T 7714	Rusheng, Qian,Yunsheng, Zhang,Yu, Zhang,et al. Effects of aqueous-phase speciation on Portland cement and supplementary cementitious materials as reflected using zeta potential of powder suspensions[J]. Construction and Building Materials,2022,345.
APA	Rusheng, Qian,Yunsheng, Zhang,Yu, Zhang,Cheng, Liu,Lin, Yang,&Deyu, Kong.(2022).Effects of aqueous-phase speciation on Portland cement and supplementary cementitious materials as reflected using zeta potential of powder suspensions.Construction and Building Materials,345.
MLA	Rusheng, Qian,et al."Effects of aqueous-phase speciation on Portland cement and supplementary cementitious materials as reflected using zeta potential of powder suspensions".Construction and Building Materials 345(2022).