硅酸盐学报

新拌水泥浆体结构及其触变特性的探讨

作者：徐永模黄大能谢尧生

单位：中国建筑材料科学研究院中国建筑材料科学研究院中国建筑材料科学研究院

关键词：水泥结构触变性

分类号：

出版年,卷(期):页码：1989,17(2):105-111

DOI：

摘要：

本文采用“台阶”法测试触变性,研究了新拌水泥浆体结构与触变特性的关系,提出了定量表征浆体结构状态的新的触变参数A_i和A,探讨了“台阶”法触变性研究对实际工程的指导意义。

The relationship between the paste structure and its thixotropic character has been investigated by measuring thixotropic behaviours according to the "step-wise" method. The new thixotropic parameters At (graded thixotropic value) and A (total thixotropic value) are proposed. Parameter At can be considered as a characteristic value of the number of bound points, with a certain energy, between particles; parameter A can be considered as a characteristic value of the complete damage of the paste structure or the energy by which the limit dispersion of particles in the paste can be reached. The development of thixotropy of the cement paste, the influence of water-reducer on the paste thixotropy and the slump loss have been discribed by means of the parameters At and A.

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参考文献：

[1] P. E. G. Banfill and D. C. Saunders, Cement and Concrete Res., 11[3] (1981) 363． [2] B. Caufin, Zement-Kalk-Gips[12] (1984) 656． [3] R. Lapasin, V. Longo, and S. Rajelj, 7th Intern. Congr. on Chem. of Cement, Paris, 1980, Vol. Ⅲ(1980) Ⅵ-135． [4] G. H. Tattersall and P. E. G. Banfill, Rheology of Fresh Concrete, Pitman Books Limited, London(1983) 262-266, 297． [5] J. P. Bombled, Ciments, Beton, Platres Chaux[688] (1974) 137． [6] 黄大能,沈威等编译,《新拌混凝土的结构和流变特性》,中国建筑工业出版社,北京(1983) 37,289,297-298。 [7] 朱文忠,黄大能,混凝土与水泥制品[6] (1986) 3。

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