钢渣粉对硫铝酸盐水泥水化过程的影响及热力学模拟

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (7): 2376-2383.

钢渣粉对硫铝酸盐水泥水化过程的影响及热力学模拟

廖宜顺^1,2, 黄维峰¹, 李豪¹, 王思纯¹

1.武汉科技大学城市建设学院,武汉 430065;
2.武汉科技大学高性能工程结构研究院,武汉 430065

收稿日期:2022-03-10 修回日期:2022-04-25 出版日期:2022-07-15 发布日期:2022-08-01
作者简介:廖宜顺(1984—),男,博士,副教授。主要从事高性能土木工程材料的研究。E-mail:liaoyishun@wust.edu.cn
基金资助:
长江科学院开放研究基金(CKWV2019756/KY);国家自然科学基金(51608402)

Effect of Steel Slag Powder on Hydration Process of Calcium Sulfoaluminate Cement and Thermodynamic Modelling

LIAO Yishun^1,2, HUANG Weifeng¹, LI Hao¹, WANG Sichun¹

1. School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China;
2. Institute of High Performance Engineering Structure, Wuhan University of Science and Technology, Wuhan 430065, China

Received:2022-03-10 Revised:2022-04-25 Online:2022-07-15 Published:2022-08-01

摘要/Abstract

摘要： 通过测试水泥浆体的凝结时间、抗压强度、电阻率,同时结合水化产物分析及热力学模拟,研究了不同掺量钢渣粉对硫铝酸盐水泥水化行为的影响规律。结果表明,随着钢渣粉质量掺量的增大,初凝时间呈先延长后缩短的趋势,且在掺量为20%时达到最大值。在28 d龄期内,掺入钢渣粉的水泥硬化浆体抗压强度均小于未掺入钢渣粉的硬化浆体,但在龄期达到60 d和90 d时,掺入40%钢渣粉试样的抗压强度均大于未掺入钢渣粉的试样。钢渣粉与硫铝酸盐水泥复合浆体的电阻率在水化初始阶段随着钢渣粉掺量的增大而增大,在水化后期(约3 h后)则随钢渣粉掺量的增大而减小。在1 d龄期内,钢渣粉掺量为40%的试样中的钢渣粉发生了水化反应,使得水泥浆体在减速期的水化速率最大。由热力学模拟结果可知:在钢渣粉掺量为40%的试样中,C₂S在10 h后开始进行水化反应,C₂ASH₈则在168 h后开始生成;当钢渣掺量大于15%时,随着钢渣粉掺量的增大,钙矾石和铝胶的生成量逐渐减少,C₂ASH₈的生成量逐渐增多。

关键词: 硫铝酸盐水泥, 钢渣粉, 抗压强度, 电阻率, 水化产物, 水化动力学, 热力学模拟

Abstract: The influence of variable steel slag powder content on the hydration behavior of calcim sulfoaluminate cement was investigated through the setting time test, compressive strength test and electrical resistivity test, combined with hydration products analysis and thermodynamic modelling. The results show that with the increase of the mass content of steel slag powder, the initial setting time shows a trend of first extending and then shortening, and reaches the maximum when the content of steel slag is 20%. In 28 d, the compressive strength of cement paste with steel slag powder is lower than the hardened paste without steel slag powder, but at the age of 60 d and 90 d, the compressive strength of cement paste with 40% steel slag powder content is higher than the sample without steel slag powder. The resistivity of steel slag powder and calcium sulfoaluminate cement composite paste increases with the increase of steel slag powder content in the initial hydration stage, and decreases with the increase of steel slag powder content in the late hydration stage (after about 3 h). In the age of 1 d, the hydration reaction of steel slag powder occurs in the sample with 40% steel slag powder content, which makes the hydration rate of cement paste reach the maximum in the deceleration period. According to thermodynamic modelling results, in the sample mixes with 40% steel slag powder, C₂S began to react after 10 h, forming C₂ASH₈ after 168 h. When the steel slag content is more than 15%, with the increase of the steel slag powder content, the production of ettringite and AH₃ gradually decreases, and the production of C₂ASH₈ gradually increases.

Key words: calcium sulfoaluminate cement, steel slag powder, compressive strength, electrical resistivity, hydration product, hydration kinetics, thermodynamic modelling

中图分类号:

TQ172

廖宜顺, 黄维峰, 李豪, 王思纯. 钢渣粉对硫铝酸盐水泥水化过程的影响及热力学模拟[J]. 硅酸盐通报, 2022, 41(7): 2376-2383.

LIAO Yishun, HUANG Weifeng, LI Hao, WANG Sichun. Effect of Steel Slag Powder on Hydration Process of Calcium Sulfoaluminate Cement and Thermodynamic Modelling[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(7): 2376-2383.

参考文献

[1] 何惠平.袁伟霞代表:建议推进钢渣资源化综合利用[N].中国冶金报,2022-03-12(6).
HE H P. Yuan Weixia representative: it is recommended that promote comprehensive utilization of steel slag utilization[N]. China Metallurgical News, 2022-3-12(6) (in Chinese).
[2] GUO J L, BAO Y P, WANG M. Steel slag in China: treatment, recycling, and management[J]. Waste Management, 2018, 78: 318-330.
[3] 侯贵华,李伟峰,郭伟,等.转炉钢渣的显微形貌及矿物相[J].硅酸盐学报,2008,36(4):436-443.
HOU G H, LI W F, GUO W, et al. Microstructure and mineral phase of converter slag[J]. Journal of the Chinese Ceramic Society, 2008, 36(4): 436-443 (in Chinese).
[4] 朱国华,钱亚生,金立国.钢渣体积安定性与改性钢渣粉的开发利用[J].中国水泥,2022,3:86-90.
ZHU G H, QIAN Y S, JIN L G. Volume stability of steel slag and development and utilization of modified steel slag powder[J]. China Cement, 2022, 3: 86-90 (in Chinese).
[5] 李永鑫.含钢渣粉掺合料的水泥混凝土组成、结构与性能的研究[D].北京:中国建筑材料科学研究院,2003.
LI Y X. Study on composition, structure and properties of cement and concrete with steel-making slag powder mineral additive[D]. Beijing: China Academy of Building Materials Science, 2003 (in Chinese).
[6] 王强,阎培渝.大掺量钢渣复合胶凝材料早期水化性能和浆体结构[J].硅酸盐学报,2008,36(10):1406-1410+1416.
WANG Q, YAN P Y. Early hydration characteristics and paste structure of complex binding material containing high-volume steel slag[J]. Journal of the Chinese Ceramic Society, 2008, 36(10): 1406-1410+1416 (in Chinese).
[7] KOUROUNIS S, TSIVILIS S, TSAKIRIDIS P E, et al. Properties and hydration of blended cements with steelmaking slag[J]. Cement and Concrete Research, 2007, 37(6): 815-822.
[8] LIAO Y S, JIANG G X, WANG K J, et al. Effect of steel slag on the hydration and strength development of calcium sulfoaluminate cement[J]. Construction and Building Materials, 2020, 265: 120301.
[9] HUMMEL W, BERNER U, CURTI E, et al. Nagra/PSI chemical thermodynamic data base 01/01[J]. Radiochimica Acta, 2002, 90(9/10/11): 805-813.
[10] LOTHENBACH B, KULIK D A, MATSCHEI T, et al. Cemdata18: a chemical thermodynamic database for hydrated Portland cements and alkali-activated materials[J]. Cement and Concrete Research, 2019, 115: 472-506.
[11] WAGNER T, KULIK D A, HINGERL F F, et al. Gem-selektor geochemical modeling package: tsolmod library and data interface for multicomponent phase models[J]. The Canadian Mineralogist, 2012, 50(5): 1173-1195.
[12] KULIK D A, WAGNER T, DMYTRIEVA S V, et al. GEM-Selektor geochemical modeling package: revised algorithm and GEMS3K numerical kernel for coupled simulation codes[J]. Computational Geosciences, 2013, 17(1): 1-24.
[13] 赵计辉,张大旺,赵世娇,等.钢渣粉的胶凝性及其对水泥力学性能的影响[J].科学技术与工程,2015,15(17):222-226+241.
ZHAO J H, ZHANG D W, ZHAO S J, et al. Cementitious property of steel slag powder and impact on mechanical property of cement[J]. Science Technology and Engineering, 2015, 15(17): 222-226+241 (in Chinese).
[14] 沈燕,张伟,陈玺,等.硫铝酸盐水泥改性的研究进展[J].硅酸盐通报,2019,38(3):683-687.
SHEN Y, ZHANG W, CHEN X, et al. Research progress of sulfoaluminate cement modification[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(3): 683-687 (in Chinese).
[15] 魏小胜,肖莲珍,李宗津.采用电阻率法研究水泥水化过程[J].硅酸盐学报,2004,32(1):34-38.
WEI X S, XIAO L Z, LI Z J. Study on hydration of Portland cement using an electrical resistivity method[J]. Journal of the Chinese Ceramic Society, 2004, 32(1): 34-38 (in Chinese).
[16] WEI X S, XIAO L Z. Kinetics parameters of cement hydration by electrical resistivity measurement and calorimetry[J]. Advances in Cement Research, 2014, 26(4): 187-193.
[17] 郭大卫.钢渣粉对硫铝酸盐水泥水化及收缩特性的影响研究[D].武汉:武汉科技大学,2020.
GUO D W. Effect of steel slag on the hydration and shrinkage characteristics of calcium sulfoaluminate cement[D]. Wuhan: Wuhan University of Science and Technology, 2020 (in Chinese).
[18] HUANG H R, LIAO Y S, QUNAYNAH S A, et al. Effect of steel slag on shrinkage characteristics of calcium sulfoaluminate cement[J]. Materials Science Forum, 2021, 1036: 263-276.
[19] POUPELLOZ E, GAUFFINET S, NONAT A. Study of nucleation and growth processes of ettringite in diluted conditions[J]. Cement and Concrete Research, 2020, 127: 105915.