沥青材料的伸缩缝,由于天冷收缩,而天然温度高时沥青材料被挤出,使收缩缝成为漏水缝,近来用聚氯乙烯胶泥(即太原胶)作为填缝防水材料。它适应性强、耐久性高、施工简便,做为伸缩缝材料,冷不缩热不淌,使用效果很好,伸缩缝能收缩又不漏水,适用于渠道衬砌和一般输水建筑物工程。聚氯乙烯胶泥的主体材料为煤焦油,经过加温脱水,加入二丁酯等恒温塑化后,再掺入 Asphalt shrinkage joints, due to cold weather shrinking, and natural temperature is high when the asphalt material is extruded, so that the shrinkage joints become leaks, with PVC glue recently (ie, Taiyuan plastic) as a caulking waterproof material. It is adaptable, durable, easy construction, as the expansion joint material, cold does not shrink the heat does not drip, the use of good results, contraction joints can shrink without leakage, apply to the lining of the channel and the general water conveyance works. The main material of PVC cement is coal tar, heated and dehydrated, added with dibutyl ester and other isothermal plastics, and then incorporated