A methodology to extract the component size distributions in interground composite (limestone) cements

被引：9

作者：

Arora, Aashay ^{[1
]}

Vance, Kirk ^{[1
]}

Sant, Gaurav ^{[2
,3
]}

Neithalath, Narayanan ^{[1
]}

机构：

[1] Arizona State Univ, Sch Sustainable Engn & Built Environm, Tempe, AZ 85287 USA

[2] Univ Calif Los Angeles, Dept Civil & Environm Engn, Los Angeles, CA USA

[3] Calif Nano Syst Inst, Los Angeles, CA USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 121卷

基金：

美国国家科学基金会;

关键词：

Limestone; Interground; Blended; Hydration; CEMHYD3D; Pore structure; Rosin-Rammler distribution; MERCURY POROSIMETRY; HYDRATION MECHANISMS; STRENGTH DEVELOPMENT; BLENDED CEMENT; FLY-ASH; FILLER; CONCRETE; POWDER;

D O I：

10.1016/j.conbuildmat.2016.06.006

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper compares the performance of commercial interground Portland-limestone cements (PLC) to those of blended limestone systems. Limestone of four different median sizes is mixed with ordinary portland cement (OPC) to create blends in an attempt to match the particle size distribution of the PLCs. The interground systems are found to outperform the blended systems, plausibly because of the difference in size distributions of the clinker and limestone fractions between the PLCs and the blended systems. A novel methodology to extract the particle size distributions of the components in the interground systems is reported. This method, applicable for several types of multi-component powder systems, considers Rosin-Rammler size distributions for the ground clinker and limestone, and optimizes the parameters of the distribution to obtain a composite distribution of the same fineness as the interground system. The model is verified using a cement hydration and microstructure model. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：328 / 337

页数：10

共 43 条

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