Effect of binding system on the compressive behaviour of refractory mortars

被引：17

作者：

Andreev, K. ^{[1
]}

Sinnema, S. ^{[1
]}

Van der Stel, J. ^{[1
]}

Allaoui, S. ^{[2
]}

Blond, E. ^{[2
]}

Gasser, A. ^{[2
]}

机构：

[1] Tata Steel R&D, NL-1970 CA Ijmuiden, Netherlands

[2] Univ Orleans, PRISME, EA 4229, Polytech Orleans, F-45072 Orleans 2, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2014年 / 34卷 / 13期

关键词：

Refractories; Mortars; Thermo-mechanics; Binder effects; Microstructure; GRANULAR-MATERIALS; CEMENT; COMPACTION; BINDER; GLASS;

D O I：

10.1016/j.jeurceramsoc.2014.04.016

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In refractory masonry lining of industrial furnaces the compressibility of mortars is critical for the thermo-mechanical integrity of the structure. Compressive stress-strain behaviour of refractory mortars has been measured during drying at room temperature and in the service temperature range of 300-1400 degrees C. The results have been explained using fractographic analysis and distinct element method computer modelling. The mortar failure has been shown to occur due to formation of shear bands of micro-cracks. The propagation of cracks preferably follows the shortest path between larger pores and is influenced by grain cohesion and interlocking. Tests with mortars featuring calcium aluminate cement, mono aluminium phosphate, water glass and bentonite clay binders have indicated that besides increasing the cohesion between the grains the binder reduces the internal friction that promotes higher compressibility. It has been found that the mortar with clay has the highest compressibility. The mortar with cement shows the most stable behaviour. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：3217 / 3227

页数：11

共 27 条

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