In-situ X-ray tomographic monitoring of gypsum plaster setting

被引：56

作者：

Adrien, Jerome ^{[1
]}

Meille, Sylvain ^{[1
]}

Tadier, Solene ^{[1
]}

Maire, Eric ^{[1
]}

Sasaki, Layla ^{[1
]}

机构：

[1] Univ Lyon, INSA Lyon, MATEIS CNRS UMR5510, Villeurbanne, France

来源：

CEMENT AND CONCRETE RESEARCH | 2016年 / 82卷

关键词：

Hydration; Kinetics; Microstructure; Particle size distribution; in-situ X-ray tomography; SURFACE FORCES; HYDRATION; MICROSTRUCTURE; RESOLUTION; CRYSTALS; PASTES;

D O I：

10.1016/j.cemconres.2015.12.011

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The first in-situ monitoring of plaster hydration using X-ray tomography is reported in this paper. Dissolution of hemihydrate particles and formation of a network of gypsum needles can be observed in 3D. A 3D quantitative analysis based on the microstructure evolution allows the determination of the degree of reaction. In particular, the size of hemihydrate particles is shown to have an influence both on the hydration kinetics and on the final microstructure of the set plaster. This work paves the way to the understanding of the relationship between microstructure evolution, chemical degree of reaction and mechanical strength development for material processed through a setting reaction. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：107 / 116

页数：10

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