水化热抑制剂对复合胶凝材料体系早期水化动力学的影响

摘要/Abstract

摘要： 本文研究了水化热抑制剂(TRI)对水泥-粉煤灰-矿渣复合胶凝材料早期水化过程。通过改变矿物掺合料在胶凝材料中的质量占比以及TRI的掺量,研究了胶凝材料的水化特性,并基于 Krstulovic-Dabic 水化动力学模型计算了反应速率常数、几何晶体生长指数等动力学参数。结果表明,矿物掺合料和TRI复合使用会延缓胶凝材料水化并降低最大放热速率;复合胶凝材料的水化过程均有结晶成核与晶体生长、相边界反应以及扩散3个阶段,Krstulovic-Dabic水化动力学模型能较好地模拟各复合胶凝材料的水化过程;矿物掺合料和TRI会影响复合胶凝材料水化产物的结晶成核以及晶体生长,并降低复合胶凝材料各阶段的水化速率。

关键词: 水化热抑制剂, 粉煤灰, 矿渣, 水化历程, 水化动力学, Krstulovic-Dabic模型

Abstract: The effect of temperature rising inhibitor (TRI) on early hydration process of cement-fly ash-slag composite cementitious material was studied. By changing mass proportion of mineral additives in gel materials and amount of TRI, the hydration characteristics of cementitious materials were measured. The reaction rate constant, geometric crystal growth index and other dynamic parameters were calculated based on the Krstulovic-Dabic model. The results show that mineral additives and TRI delay the time of hydration and reduce the maximum hydration rate of cementitious materials. The hydration process of composite cementitious material can involve three stages, i.e. nucleation and crystal growth, interactions at phase boundaries and diffusion. The hydration process can be predicted by Krstulovic-Dabic model well. Mineral additives and TRI affect the crystallization of nucleation and crystal growth, and reduce the hydration rate of composite cementitious material at every stage.

Key words: temperature rising inhibitor, fly ash, slag, hydration process, hydration kinetics, Krstulovic-Dabic model

中图分类号:

TU528.42

曾柯林, 温东昌, 杨蓉, 孙涛, 王雷冲, 韩金龙. 水化热抑制剂对复合胶凝材料体系早期水化动力学的影响[J]. 硅酸盐通报, 2023, 42(8): 2712-2721.

ZENG Kelin, WEN Dongchang, YANG Rong, SUN Tao, WANG Leichong, HAN Jinlong. Effect of Temperature Rising Inhibitor on Early Hydration Kinetics of Composite Cementitious Material[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(8): 2712-2721.

参考文献

[1] 谭昱, 陈儒发, 谭逸波, 等. 港珠澳大桥低温升抗裂C45承台大体积混凝土研究与应用[J]. 公路, 2016, 61(5): 282-288.
TAN Y, CHEN R F, TAN Y B, et al. Research and application of C45 mass concrete with low temperature rise and crack resistance for bearing platform of Hong Kong-Zhuhai-Macao bridge[J]. Highway, 2016, 61(5): 282-288 (in Chinese).
[2] 王冬松. 杭州湾跨海大桥高性能海工混凝土配合比设计[J]. 公路, 2009, 54(7): 299-303.
WANG D S. Mix proportion design of high performance marine concrete for Hangzhou Bay cross-sea bridge[J]. Highway, 2009, 54(7): 299-303 (in Chinese).
[3] 杨海成, 胡正涛, 于方, 等. 海水环境粉煤灰混凝土结构耐久性现场检测与评估分析[J]. 海洋工程, 2019, 37(2): 104-111.
YANG H C, HU Z T, YU F, et al. Field test and evaluation analysis on durability of fly ash concrete structures in seawater environment[J]. The Ocean Engineering, 2019, 37(2): 104-111 (in Chinese).
[4] 李茂辉, 杨志强, 王有团, 等. 粉煤灰复合胶凝材料充填体强度与水化机理研究[J]. 中国矿业大学学报, 2015, 44(4): 650-655+695.
LI M H, YANG Z Q, WANG Y T, et al. Experiment study of compressive strength and mechanical property of filling body for fly ash composite cementitious materials[J]. Journal of China University of Mining & Technology, 2015, 44(4): 650-655+695 (in Chinese).
[5] 张国栋, 吕兴栋, 杨凤利, 等. 粉煤灰/矿粉-水泥胶凝体系的水化放热性能[J]. 济南大学学报(自然科学版), 2014, 28(5): 386-390.
ZHANG G D, LYU X D, YANG F L, et al. Effect of mineral admixtures on the hydration heat evolution of fly ash/slag-cement cementitious system[J]. Journal of University of Jinan (Science and Technology), 2014, 28(5): 386-390 (in Chinese).
[6] 朱鹏飞, 宫经伟, 唐新军. 大体积混凝土胶凝材料体系水化放热规律研究[J]. 长江科学院院报, 2018, 35(6): 111-116.
ZHU P F, GONG J W, TANG X J. Law of hydration heat of mass concrete cementitious materials[J]. Journal of Yangtze River Scientific Research Institute, 2018, 35(6): 111-116 (in Chinese).
[7] SHI M X, WANG Q, ZHOU Z K. Comparison of the properties between high-volume fly ash concrete and high-volume steel slag concrete under temperature matching curing condition[J]. Construction and Building Materials, 2015, 98: 649-655.
[8] 辜振睿, 刘晓琴, 王海龙. 水化热抑制剂对水泥水化的调控作用[J]. 新型建筑材料, 2021, 48(8): 47-50+54.
GU Z R, LIU X Q, WANG H L. Regulating effect of hydration heat inhibitor on cement hydration process[J]. New Building Materials, 2021, 48(8): 47-50+54 (in Chinese).
[9] 张浩. 水化热抑制剂对水泥基材料水化行为的影响[D]. 南京: 东南大学, 2021.
ZHANG H. Effct of temperature rising inhibitor on hydration behaviour of cementitious materials[D]. Nanjing: Southeast University, 2021 (in Chinese).
[10] 严宇. 水化温升抑制材料调控水泥水化放热历程的作用机制[D]. 南京: 东南大学, 2020.
YAN Y. Mechanism study of temperature rise inhibitor affecting the exothermic process of cement hydration[D]. Nanjing: Southeast University, 2020 (in Chinese).
[11] 秦媛. 水化温升抑制材料对水泥-粉煤灰/矿粉性能的影响规律及作用机制[D]. 南京: 东南大学, 2021.
QIN Y. Influence law and mechanism of hydration temperature rise inhibiting materials on properties of cement-fly ash/mineral powder[D]. Nanjing: Southeast University, 2021 (in Chinese).
[12] 陈炜一, 周予启, 李嵩, 等. 水化热抑制剂对水泥-粉煤灰胶凝材料水化和混凝土性能的影响[J]. 硅酸盐学报, 2021, 49(8): 1609-1618.
CHEN W Y, ZHOU Y Q, LI S, et al. Impact of temperature rising inhibitor on hydration of cement-fly ash cementitious materials and performance of concrete[J]. Journal of the Chinese Ceramic Society, 2021, 49(8): 1609-1618 (in Chinese).
[13] 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).
[14] 孔祥明, 卢子臣, 张朝阳. 水泥水化机理及聚合物外加剂对水泥水化影响的研究进展[J]. 硅酸盐学报, 2017, 45(2): 274-281.
KONG X M, LU Z C, ZHANG C Y. Recent development on understanding cement hydration mechanism and effects of chemical admixtures on cement hydration[J]. Journal of the Chinese Ceramic Society, 2017, 45(2): 274-281 (in Chinese).
[15] SCRIVENER K L, NONAT A. Hydration of cementitious materials, present and future[J]. Cement and Concrete Research, 2011, 41(7): 651-665.
[16] KNUDSEN T. On particle size distribution in cement hydration[C]//7th International Congress on the Chemistry of Cement. 1980(2): 170-175.
[17] ZHANG J, SCHERER G W. Comparison of methods for arresting hydration of cement[J]. Cement and Concrete Research, 2011, 41(10): 1024-1036.
[18] 史才军, 元强. 水泥基材料测试分析方法[M]. 北京: 中国建筑工业出版社, 2018: 131.
SHI C J, YUAN Q. Test and analysis method of cement-based materials[M]. Beijing: China Construction Industry Press, 2018: 131 (in Chinese).
[19] SMITH B J, ROBERTS L R, FUNKHOUSER G P, et al. Reactions and surface interactions of saccharides in cement slurries[J]. Langmuir, 2012, 28(40): 14202-14217.
[20] KIM T, OLEK J. Effects of sample preparation and interpretation of thermogravimetric curves on calcium hydroxide in hydrated pastes and mortars[J]. Transportation Research Record: Journal of the Transportation Research Board, 2012, 2290(1): 10-18.
[21] BEZJAK A. Nuclei growth model in kinetic analysis of cement hydration[J]. Cement and Concrete Research, 1986, 16(4): 605-609.