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掺低熔点玻璃粉水泥胶砂的耐热性能研究 预览

Experimental Study on Cement Mortar Modified by Low Melting Point Glass Powder
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摘要 对掺低熔点玻璃粉水泥胶砂性能进行了研究。测试了不同煅烧温度前后试件的抗压强度和抗折强度,分析了强度残值率、脆性系数和微观结构。试验结果表明,低熔点玻璃粉能显著改善水泥胶砂在高温煅烧(900℃)时的耐热性能,提高强度残值率和降低脆性系数,尤其与粉煤灰或矿渣粉复掺时效果更好。当掺10%低熔点玻璃粉和15%粉煤灰时,抗压强度残值率改善幅度最高,达40%,抗折强度残值率改善幅度达48%,脆性系数最低,为5.63;掺10%低熔点玻璃粉和15%矿渣粉的水泥胶砂,抗压强度残值率为52%,抗折强度残值率为50%。 The performances of cement mortar mixed with low melting point glass powder were studied.The compressive strength and flexural strength of cement mortar specimens before and after different calcination temperatures were tested, and the strength residual rateh, brittleness coefficient and microstructure were analyzed. The results show that the low melting point glass powder can significantly improves the performance of heat resistance cement mortar at a high calcination temperature( 900 ℃),including improving the strength residual rate and reducing the brittleness coefficient. The effect is better especially with fly ash or slag powder. when with 10% low melting point glass powder and 15% fly ash,the compressive strength of the residual rate of improvement is 40%,improved by up to 48%,and the brittleness coefficient is 5. 63. With 10% low melting point glass powder and 15% slag powder,the compressive strength of the residual rate is 52%,and the bending strength of the residual rate is 50%.
作者 周敏 刘家明 赖泽成 李广慧 张腾 陈星国 谢刚 徐国宾 ZHOU Min1,2,LIU Jia-ming1,2,LAI Ze-cheng1,2,LI Guang-hui3,ZHANG Teng4 CHEN Xing-guo1,2,XIE Gang1,2,XU Guo-bin1,2(1. Fujian Academy of Building Research,Fuzhou 350025,China; 2. Fujian Provincial Key Laboratory of Green Building Technology, Fuzhou 350025 , China; 3. Fujian University of Technology, Fuzhou 350025 , China; 4. Fuzhou University, Fuzhou 350025 , China)
出处 《硅酸盐通报》 CSCD 北大核心 2018年第7期2346-2350,共5页 Bulletin of the Chinese Ceramic Society
关键词 低熔点玻璃粉 水泥胶砂 强度残值率 脆性系数 粉煤灰 矿渣粉 low meltingpoint glass powder cement mortar strength residual rate brittleness coefficient fly ash slag powder
作者简介 周敏(1978-),男,硕士,教授级高级工程师.主要从事新型建筑材料和检测技术方面的研究.
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