Hydration properties of steel slag under autoclaved condition

被引：47

作者：

Wang, Qiang ^{[1
]}

Shi, Mengxiao ^{[1
]}

Zhang, Zengqi ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2015年 / 120卷 / 02期

关键词：

Steel slag; Autoclaved; Hydration; Free CaO; MgO; C-S-H; MECHANICAL-PROPERTIES; PORTLAND-CEMENT; BLENDED CEMENTS; DURABILITY; ASH;

D O I：

10.1007/s10973-015-4397-3

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper investigated the hydration properties of steel slag under autoclaved condition (216 A degrees C and 2 MPa). The results show that under autoclaved condition, besides C2S and C3S, f-CaO and the minerals containing MgO can react sufficiently. The morphologies of Ca(OH)(2) produced by f-CaO are quite different from those produced by C2S and C3S. The Ca(OH)(2) produced by f-CaO has a larger specific surface area or volume than that produced by C2S and C3S. The mean Ca-Si ratio of the C-S-H gel produced by steel slag is between 1.7 and 1.9, which is a little smaller than that produced by cement. The reaction of f-CaO tends to cause greater expansion than that of the minerals containing MgO.

引用

页码：1241 / 1248

页数：8

共 27 条

[1] Volume stabilisation of high MgO cement: Effect of curing conditions and fly ash addition [J].

Ali, MM ;

Mullick, AK .

CEMENT AND CONCRETE RESEARCH, 1998, 28 (11) :1585-1594

[2] Effect of autoclaving temperature on calcium silicate-based building products containing clay-brick waste [J].

Connan, H. ;

Ray, A. ;

Thomas, P. ;

Guerbois, J. -P. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 88 (01) :115-119

[3] Indirect determination of the Ca/Si ratio of the C-S-H gel in Portland cements [J].

Escalante-Garcia, JI ;

Mendoza, G ;

Sharp, JH .

CEMENT AND CONCRETE RESEARCH, 1999, 29 (12) :1999-2003

[4] Soundness evaluation of concrete with MgO [J].

Gao, Pei-wei ;

Wu, Sheng-xing ;

Lu, Xiao-lin ;

Deng, Min ;

Lin, Ping-hua ;

Wu, Zhong-ru ;

Tang, Ming-shu .

CONSTRUCTION AND BUILDING MATERIALS, 2007, 21 (01) :132-138

[5] FILLER CEMENT - THE EFFECT OF THE SECONDARY COMPONENT ON THE HYDRATION OF PORTLAND-CEMENT .1. A FINE NONHYDRAULIC FILLER [J].

GUTTERIDGE, WA ;

DALZIEL, JA .

CEMENT AND CONCRETE RESEARCH, 1990, 20 (05) :778-782

[6] Volcanic ash and pumice as cement additives: pozzolanic, alkali-silica reaction and autoclave expansion characteristics [J].

Hossain, KMA .

CEMENT AND CONCRETE RESEARCH, 2005, 35 (06) :1141-1144

[7] Bonding and abrasion resistance of geopolymeric repair material made with steel slag [J].

Hu, Shuguang ;

Wang, Hongxi ;

Zhang, Gaozhan ;

Ding, Qingjun .

CEMENT & CONCRETE COMPOSITES, 2008, 30 (03) :239-244

[8] Properties and hydration of blended cements with steelmaking slag [J].

Kourounis, S. ;

Tsivilis, S. ;

Tsakiridis, P. E. ;

Papadimitriou, G. D. ;

Tsibouki, Z. .

CEMENT AND CONCRETE RESEARCH, 2007, 37 (06) :815-822

[9]

Li H, 2011, ADV MAT RES, V846, P217

[10] Structural characteristics and hydration kinetics of modified steel slag [J].

Li, Jianxin ;

Yu, Qijun ;

Wei, Jiangxiong ;

Zhang, Tongsheng .

CEMENT AND CONCRETE RESEARCH, 2011, 41 (03) :324-329

← 1 2 3 →