目前水工结構物的宽0.5至8—10公分的構造缝,是这样填注的:在早先浇制好的混凝土塊或区段表面,粘贴各种成卷的材料——油毛毡、瀝青油纸、瀝青石棉板、石棉防水油毡、地瀝青蓆,地瀝青板。这种方法的缺点是: 1.由于所采用的某些材料价值昂贵,工作非常繁重,而且必须用手进行,因此费用就很高。例如填注1平方公尺厚10公厘的缝,用油毛毡、瀝青油纸是19盧布47戈比,用瀝青石棉板是23盧布7戈比,用地 At present, structural joints of hydraulic structures of 0.5 to 8-10 cm in width are filled in such a way that various rolled materials such as felt, bitumen paper, Asbestos asphalt, asbestos waterproof linoleum, to asphalt seats, to asphalt board. The disadvantages of this method are: 1. The cost is high because some of the materials used are expensive, very heavy and must be handled by hand. For example, filling a square meter 10 cm thick seam, with felt, asphalt paper is 19 rubles 47 kopeck, asphalt asbestos board is 23 rubles 7 kopeck, land