Effect of Curing Temperature on Intermediate Temperature Properties of Calcium Aluminate Cement Bonded Corundum Castables

• 作者: LI Ye LIU Kun DING Dafei WANG Qingfeng FU Xiaohui YE Guotian
• 来源期刊: 中国耐火材料（英文版）
• 年，卷（期）: 2021,（3）
• 页码范围: 33-36
• 页数: 4页
• 语种: 英文
• DOI: 10.19691/j.cnki.1004-4493.2021.03.007

摘要

In order to study the effect of the curing temperature on the intermediate temperature properties of calcium aluminate cement bonded corundum castables,the prepared castables were cured at 5,10,25,40 and 50 ℃,respectively,dried at 110 ℃ for 24 h and heat treated at 800 and 1100 ℃,respectively.Then the apparent porosity,the cold modulus of rupture and the cold crushing strength were measured.The phase composition of castable matrix specimens treated under the same conditions and the influence of the curing temperature on the intermediate temperature strength of the castables were also analyzed.The results show that with the increase of the curing temperature,the hydration degree of calcium aluminate cement increases,which promotes the uniform distribution of hydration products with Al2O3 after decomposition,thus enhancing the intermediate temperature strength of castables.