耐火浇注料防爆裂研究进展

Research Progress on Anti-Spalling of Refractory Castables

浇注料具有能耗低、工艺简单、便于机械化施工等优点,是耐火材料行业绿色发展的重要组成部分之一。但含水浇注料在温度梯度导致的热应力和水蒸气导致的内部压力共同作用下,在干燥升温过程中易发生结构损伤乃至爆裂破坏,从而缩短构件寿命并造成经济、资源损失。本工作从浇注料防爆裂的角度出发,就爆裂发生的基本机理、典型结合体系的微观结构与抗爆裂性能、防爆手段、测试手段、数值模拟等方面分别进行论述,并提出了相关发展展望。

Refractory castables are green materials for the development of refractory industry due to their advantages of low energy consumption,simple process and convenient mechanized construction.However,water-containing castables are prone to structural damage and even explosive spalling during the heating process of drying,so as to shorten the service life of components and cause economic and resource losses under the combined action of thermal stress caused by temperature gradient and internal pressure caused by water vapor.From the perspective of the anti-spalling of castables,this review represented the basic mechanism of explosive spalling,the microstructure and spalling resistance of typical bonding systems,anti-spalling means,test methods and numerical simulation,and gave the future related research aspects.