Influence of Limestone Powder on Hydration Characteristics and Rheological Properties of Cement Paste

被引：0

作者：

Miao M. ^{[1
]}

Xue K. ^{[1
]}

Miao F. ^{[2
]}

Jiag H. ^{[2
]}

机构：

[1] College of Materials Science and Engineering, Chongqing University, Chongqing

[2] State Grid Yingkou Power Supply Company, Yingkou

来源：

Miao, Miao (miao_thu@126.com) | 2018年 / Hunan University卷 / 45期

基金：

中国国家自然科学基金;

关键词：

Hydration characteristic; Limestone powder; Rheological properties;

D O I：

10.16339/j.cnki.hdxbzkb.2018.12.014

中图分类号：

学科分类号：

摘要：

The influence of limestone powder on the hydration characteristics and rheological properties of cement was studied from two aspects of content and fineness by micro calorimeter and rotational viscometer. The influence of limestone powder on the system hydration was analyzed through the rate of hydration heat evolution and hydration heat, while the influence of limestone powder on the rheological properties was analyzed from two angles of close packing and particle volume fraction. The results show that limestone powder can promote the system hydration process, and the greater fineness of limestone powder results in the more obvious promoting effect. The addition of limestone powder leads to the decrease of cement content, so the second exothermic peak and total heat of the system decrease with the increase of limestone powder content. With the increase of limestone powder content or fineness, the volume fraction of solid particles increases gradually, the particle size distribution modulus decreases, and the particle size distribution curve of composite system is close to the ideal distribution curve gradually. The yield stress and plastic viscosity of composite systems decrease with the increase of limestone powder content, but increase with the increase of limestone powder fineness. © 2018, Editorial Department of Journal of Hunan University. All right reserved.

引用

页码：90 / 96

页数：6

共 25 条

[21] Vance K., Arora A., Sant G., Et al., Rheological evaluations of interground and blended cement-limestone suspensions, Construction and Building Materials, 79, pp. 65-72, (2015)
[22] Tang M.M., Wang Z.Y., Experimental study on rheological deformation and stress properties of limestone, Journal of Central South University of Technology, 15, pp. 475-478, (2008)
[23] Vikan H., Justnes H., Rheology of cementitious paste with silica fume or limestone, Cement and Concrete Research, 37, 11, pp. 1512-1517, (2007)
[24] Yang J., Li Y., Influence of particle size distribution of mineral admixture on mechanical properties of cementitious materials of high performance concrete, Industrial Construction, 33, 6, pp. 55-58, (2003)
[25] Krieger I.M., Dougherty T.J., A mechanism for non-newtonian flow in suspensions of rigid spheres, Transactions of the Society of Rheology, 3, 1, pp. 137-152, (1959)

← 1 2 3 →