Early-age properties of cement-based materials. I: Influence of cement fineness

被引：91

作者：

Bentz, Dale P. ^{[1
]}

Sant, Gaurav ^{[2
]}

Weiss, Jason ^{[2
]}

机构：

[1] Natl Inst Stand & Technol, Bldg & Fire Res Lab, Gaithersburg, MD 20899 USA

[2] Purdue Univ, Sch Civil Engn, W Lafayette, IN 47907 USA

来源：

JOURNAL OF MATERIALS IN CIVIL ENGINEERING | 2008年 / 20卷 / 07期

关键词：

D O I：

10.1061/(ASCE)0899-1561(2008)20:7(502)

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The influence of cement fineness on early-age properties of cement-based materials is investigated using a variety of experimental techniques. Properties that are critical to the early-age performance of these materials are tested, including heat release, temperature rise, chemical shrinkage, and autogenous deformation. Measurements of these properties for two cements of widely different fineness are supplemented with other performance measures, specifically acoustic emission measurements to listen for microcracking occurring in high performance w/c=0.35 mortars and dual-ring paste shrinkage measurements conducted under sealed conditions to assess residual stress development. The measured properties are observed to be quite different for the coarse and the fine cement. The current emphasis on high early-age strength within the construction industry may result in the specification of cements that are more prone to early-age cracking.

引用

页码：502 / 508

页数：7