Relation of expansion due to alkali silica reaction to the degree of reaction measured by SEM image analysis

被引：129

作者：

Ben Haha, M. ^{[1
]}

Gallucci, E. ^{[1
]}

Guidoum, A. ^{[1
]}

Scrivener, K. L. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Construct Mat, CH-1015 Lausanne, Switzerland

来源：

CEMENT AND CONCRETE RESEARCH | 2007年 / 37卷 / 08期

关键词：

alkali-aggregate reaction; backscattered electron Imaging; expansion; degree of reaction;

D O I：

10.1016/j.cemconres.2007.04.016

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Scanning Electron Microscopy Image Analysis (SEM-IA) was used to quantify the degree of alkali silica reaction in affected microbars, mortar and concrete prisms. It was found that the degree of reaction gave a unique correlation with the macroscopic expansion for three different aggregates, stored at three temperatures and with two levels of alkali. The relationships found for the concretes and the mortars overlap when normalised by the aggregate content. This relationship seems to be linear up to a critical reaction degree which coincides with crack initiation within the reactive aggregates. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1206 / 1214

页数：9

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