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当前在农村推广农业节水灌溉工程中,农民最感棘手的是预制混凝土管接头的困难,据试验,可用下列三法有效地解决,供选用:一、布兜法此法是先在管子接头处铺一层砂灰,然后将管口对正后用三层纱布三层灰浆打箍。用该法的每节管子接头投资为2元左右,投资较高,且施工速度慢。二、塑料油膏法此法是将防水材料“塑料油膏”热熔化,拌入适量水泥,然后把管加热,将油膏涂于管端,对正挤紧,再用
Currently in rural areas to promote agricultural water-saving irrigation projects, the most troublesome farmers is the difficulty of prefabricated concrete fittings, according to the test, the following three methods can be effectively used for the selection: First, cloth pocket method This method is the first pipe fittings Shop a layer of gray sand, and then after the nozzle alignment with three layers of gauze mortar Hoop. With this method, each pipe joint investment is about 2 yuan, higher investment, and construction speed is slow. Second, the plastic ointment method This method is the waterproof material “plastic ointment” hot melt, stir in the amount of cement, and then the tube heating, the ointment applied to the pipe end, is squeezed tight, reuse