Effect of Nano-sized Titanium Dioxide on Early Age Hydration of Portland Cement

被引：72

作者：

Jayapalan, A. R. ^{[1
]}

Lee, B. Y. ^{[1
]}

Kurtis, K. E. ^{[1
]}

机构：

[1] Georgia Inst Technol, Atlanta, GA 30332 USA

来源：

NANOTECHNOLOGY IN CONSTRUCTION 3, PROCEEDINGS | 2009年

关键词：

SECONDARY COMPONENT; FILLER CEMENT; PARTICLES; MORTARS;

D O I：

10.1007/978-3-642-00980-8_35

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effect of nano-scale non-reactive anatase titanium dioxide (TiO2) on early age hydration of cement was experimentally studied. Isothermal calorimetry was performed on cement pastes with two different particle sizes of TiO2 at replacement levels of 5, 7.5 and 10%. The addition of TiO2 to cement increased the heat of hydration and accelerated the rate of reaction at early stages of hydration. This increase was found to be proportional to the percentage addition and the fineness of TiO2. These results demonstrate that the addition of non-reactive nanoscale fillers could affect the rate of cement hydration by heterogeneous nucleation.

引用

页码：267 / 273

页数：7

共 9 条

[1]

BIANCHI CL, 2007, INT RILEM S PHOT ENV

[2] FILLER CEMENT - THE EFFECT OF THE SECONDARY COMPONENT ON THE HYDRATION OF PORTLAND-CEMENT .1. A FINE NONHYDRAULIC FILLER [J].