Understanding the multiple actions of phosphoric acid-modified steel slag powder on early-age hydration of cement

被引：4

作者：

Zhang, Zedi ^{[1
]}

Jia, Zijian ^{[1
]}

Cao, Ruilin ^{[1
]}

Wang, Wei ^{[1
]}

Liu, Chao ^{[1
]}

Gao, Yueyi ^{[2
]}

Banthia, Nemkumar ^{[3
]}

Zhang, Yamei ^{[1
]}

机构：

[1] Southeast Univ, Sch Mat Sci & Engn, Jiangsu Key Lab Construct Mat, Nanjing 211189, Peoples R China

[2] Jiangsu Acad Safety Sci & Technol, Nanjing 210042, Peoples R China

[3] Univ British Columbia, Dept Civil Engn, Vancouver, BC V6T 1Z4, Canada

来源：

CEMENT & CONCRETE COMPOSITES | 2024年 / 150卷

基金：

中国国家自然科学基金;

关键词：

Steel slag powder; Cement; Phosphoric acid; Hydration; Early age; TRICALCIUM SILICATE; PORTLAND CEMENTS; PHASE; KINETICS; NUCLEATION; DIFFRACTION; CAO;

D O I：

10.1016/j.cemconcomp.2024.105538

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The retardation of the early-age hydration of cement by steel slag powder severely restricts its use in cementitious materials. This paper reports on the modification of steel slag powder with phosphoric acid, which is found to alleviate its inhibition of cement hydration. Comprehensive investigations of solid phase assemblage and elements dissolving behavior in cement pastes reveal that multiple actions combine to determine the effect of phosphoric acid-modified steel slag powder on cement hydration. By using an appropriate amount of phosphoric acid for modification, a noteworthy reduction in C12A7 content and a significant increase in the specific surface area of steel slag powder can be achieved. This consequently diminishes the negative inhibitory effect of steel slag powder on hydration. However, excessive use of phosphoric acid exacerbates the delayed effect of calcium phosphate on mineral dissolution, so that the inhibitory effect of steel slag powder on cement hydration cannot be alleviated.

引用

页数：13

共 63 条

[1] Aitcin P.-C., 2008, Binders for durable and sustainable concrete
[2] Rietveld quantitative phase analysis of Yeelimite-containing cements
Alvarez-Pinazo, G.
Cuesta, A.
Garcia-Mate, M.
Santacruz, I.
Losilla, E. R.
De la Torre, A. G.
Leon-Reina, L.
Aranda, M. A. G.
[J]. CEMENT AND CONCRETE RESEARCH, 2012, 42 (07) : 960 - 971
[3] Effects of BOF steel slag and other cementitious materials on the rheological properties of self-compacting cement pastes
Calmon, Joao Luiz
Tristao, Fernando Avancini
Giacometti, Marcela
Meneguelli, Marcelo
Moratti, Mirko
Sudo Lutif Teixeira, Jamilla Emi
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2013, 40 : 1046 - 1053
[4] Carbon sequestration of steel slag and carbonation for activating RO phase
Chen, Zhimin
Li, Rui
Zheng, Xianming
Liu, Jiaxiang
[J]. CEMENT AND CONCRETE RESEARCH, 2021, 139
[5] Aluminum hydroxide gel characterization within a calcium acuminate cement paste by combined Pair Distribution Function and Rietveld analyses
Cuesta, Ana
Ichikawa, Rodrigo U.
Londono-Zuluaga, Diana
De la Torre, Angeles G.
Santacruz, Isabel
Turrillas, Xavier
Aranda, Miguel A. G.
[J]. CEMENT AND CONCRETE RESEARCH, 2017, 96 : 1 - 12
[6] The superstructure of C3S from synchrotron and neutron powder diffraction and its role in quantitative phase analyses
De La Torre, AG
Bruque, S
Campo, J
Aranda, MAG
[J]. CEMENT AND CONCRETE RESEARCH, 2002, 32 (09) : 1347 - 1356
[7] Gan W.G., 2007, Wuhan Iron and Steel Corporation Technology, V45, P28
[8] Steel slag in China: Treatment, recycling, and management
Guo, Jianlong
Bao, Yanping
Wang, Min
[J]. WASTE MANAGEMENT, 2018, 78 : 318 - 330
[9] Effects of steel slag as fine aggregate on static and impact behaviours of concrete
Guo, Yongchang
Xie, Jianhe
Zheng, Wenyu
Li, Jianglin
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2018, 192 : 194 - 201
[10] Effect of particle size distribution on flocculation and its growth in cement-ground limestone suspensions
Han, Kaidong
Xiao, Jia
Zhang, Zedi
Wang, Jialei
Hu, Xiaoyan
[J]. CONSTRUCTION AND BUILDING MATERIALS, 2020, 262

← 1 2 3 4 5 6 7 →