硅酸盐学报

水泥浆体-集料界面的粘结强度

作者：刘元湛杨培怡张承翼唐明述

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出版年,卷(期):页码：1988,16(4):289-295

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摘要：

本文用硅酸盐水泥、矿渣硅酸盐水泥、高铝水泥并采用7种水灰比(0.2—0.5),以石英和石灰石为集料,制成26种粘结试体,以直接测定水泥浆体和集料界面抗剪及抗拉粘结强度的方法,通过回归分析确定了水泥浆体和集料界面的抗拉或抗剪粘结强度,发现两者均与水灰比线性负相关。实验表明,石灰石-水泥浆体的界面粘结强度大于石英-水泥浆体的界面粘结强度;硅酸盐水泥浆体-集料的界面粘结强度大于矿渣硅酸盐水泥浆体-集料的界面粘结强度。以熟料作集料可显著提高界面粘结强度。

26 samples made from three kinds of cement(portland cement, portland slag cement and high alumina cement) and two kinds of aggregates (quartz and limestone) were studied. W/C ratio varied from 0.2—0.5. The interfacial bond strength were determined directly by shear and tension and the results were analyzed by the regression analysis. The experimental results prove that either the tensile bond strength or the shear bond strength on the interface has a negative linear correlation with the increasing of W/C ratio. In addition, it is proved that the interfacial bond strength for limestone is higher than that of quartz, and that for portland cement is higher than that for portland slag cement. It is worthy of notice that the interfacial bond strength for clinker used as an aggregate increases considerably.

基金项目：

中国科学院科学基金

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参考文献：

[1] 唐明述,“水泥浆体与集料的界面反应”(1984) (内部资料). [2] T. C. H. Thomas and O. S. Floyd, J. Amer. Concrete Inst., 60[4] (1963) 465． [3] A. T. Michael and B. B. Bengt, J. Amer., Concrete Inst., 61[8] (1964) 939． [4] J. Skalny and S. Mindess, in Reactivity of Solid, Ed. by P. Barret and L. C. Dufour, Amsterdam. Netherlands(1985) 517-621． [5] 岩崎训明,《混凝土的特性》(中译本),中国建筑工业出版社(1980) 89． [6] 吴兆琦,薛君玕,建筑材料科学研究院院刊;水泥与房建材料[2] (1986) 19。 [7] 南京工学院,重庆建筑工程学院,《混凝土学》,中国建筑工业出版社(1981) 51-81． [8] 解松善,硅盐酸学报,11[4] (1983) 489。 [9] 水泥[12] (1984) 43-46。

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