Modelling of effect of ASR on concrete microstructureac

被引：9

作者：

Copuroglu, Oguzhan ^{[1
,2
]}

Schlangen, Erik ^{[3
]}

机构：

[1] Delft Univ Technol, Fac CiTG, Microlab, POB 5048, NL-2600 GA Delft, Netherlands

[2] Ecole Mines, Douai, France

[3] Intron, Culemborg, Netherlands

来源：

ADVANCES IN FRACTURE AND DAMAGE MECHANICS VI | 2007年 / 348-349卷

关键词：

concrete; ASR; degradation; microstructure; lattice model;

D O I：

10.4028/www.scientific.net/KEM.348-349.809

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present study the damage mechanism of Alkali-Silica-Reaction (ASR) in concrete bearing reactive volcanic rock is investigated, A combined numerical and experimental research is presented. The mechanism of ASR is investigated on a concrete microbar specimen by using various microscopy techniques, A meso mechanical model based on lattice theories is used as a starting point. Variables in the model are the properties of the concrete components on the meso-level, like mechanical properties of cement paste, aggregates, dissolved aggregate, bond properties and finally the properties of the gel. It is found that current numerical model is able to simulate ASR cracks similar to the experimental observations.

引用

页码：809 / +

页数：2