摘要
该文研究抹面工艺对预制管片外弧面开裂特征、氯离子扩散系数、碳化深度以及预计服役年限的影响,探索管片生产时的最优抹面工艺。研究结果表明:预制管片生产时的最优抹面次数为3次,3次抹面可以有效减少开裂,提高预制管片的耐久性。
This paper studied the effect of troweling process on the outer cambered surface cracking characteristics of precast segment,chloride ion diffusion coefficient,carbonization depth,estimated service life and the optimal troweling process duringsegment production.The result shows that the optimal troweling time during segment production is 3 times,which could effectively reduce crack and improve the durability of precast segment.
作者
李晨
范鹤飞
LI Chen;FAN He-fei(Tianjin Construction Engineering Co,Ltd,China Railway First Engineering Group,Tianjin 300143,China;School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China)
出处
《建材世界》
2019年第6期25-29,共5页
The World of Building Materials
关键词
预制管片
开裂
抹面
扩散系数
碳化深度
precast segment
crack
troweling
diffusion coefficient
carbonation depth
