硅酸盐通报2025，Vol.44Issue(12)：4301-4313,13.DOI:10.16552/j.cnki.issn1001-1625.2025.0565
硅酸盐水泥对大吨位悬式瓷绝缘子用水泥胶合剂性能的影响
Effect of Portland Cement on Properties of Cement Adhesives Used in Large Tonnage Suspended Porcelain Insulators
摘要
Abstract
Portland cement adhesives represent a significant component of porcelain insulators,wherein the differences in the characteristics of the cementitious materials exert a significant influence on the performance of cement adhesives.In this study,Portland cements from Japanese Onoda cement and three domestic Portland cements were selected to analyze cement characteristics,and the effects of four Portland cements on the fluidity,setting time,mechanical properties,pore characteristics and thermal-mechanical properties of cement adhesives were investigated.The results show that domestic Portland cement adhesives exhibit superior performance in comparison with Onoda cement adhesive.The content of tricalcium aluminate(C3A)in Taini cement is relatively high and average particle size of Taini cement is the lowest.This results in the formation of a greater quantity of ettringite(AFt),which subsequently fill the pores in the early stage of hydration,3 d compressive strength and flexural strength of Taini cement adhesive reach 105.4 and 18.5 MPa,respectively.However,the production of alumino-ferrite-mono(AFm)during the later stages of hydration results in a high dry shrinkage rate.The content of C3A and gypsum in China resources cement is low,and more hydrated calcium silicate(C-S-H)gel and AFt are produce in the later stages of hydration,with the lowest porosity(6.67％)and dry shrinkage rate(0.040％at 11 d)of China resources cement adhesive.The average particle size of Conch cement is relatively large and tricalcium silicate content is the highest,which results in a relatively high later strength Conch cement adhesive.However,due to the transformation of AFt to AFm in the later stage of hydration,the dry shrinkage rate of Conch cement adhesive is relatively high.The thermal-mechanical properties of porcelain components bonded with domestic Portland cement adhesives have all been shown to exceed those of the Onoda cement adhesive,indicating that the domestic Portland cement has the capacity to replace Onoda cement in the production of ultra-high voltage large tonnage porcelain insulators.关键词
特高压/瓷绝缘子/硅酸盐水泥/水泥胶合剂/孔隙特征/干缩率Key words
ultra-high voltage/porcelain insulator/Portland cement/cement adhesive/pore characteristic/dry shrinkage rate分类
化学化工引用本文复制引用
ZHOU Weibing,MA Mingzhuo,ZHOU Jun,ZHAO Jiangtao,ZHOU Yongxin..硅酸盐水泥对大吨位悬式瓷绝缘子用水泥胶合剂性能的影响[J].硅酸盐通报,2025,44(12):4301-4313,13.基金项目
国家电网有限公司总部管理科技项目资助(5500-202155594A-0-5-YS) （5500-202155594A-0-5-YS）
