预应力后张法钢筋混凝土构件的孔道灌浆,一般用灰浆泵通过胶皮管、喷浆嘴,将灰浆压入孔道。但由于灰浆受到5个大气压左右的压力,用人力掌握喷浆咀,既费劲又不安全,稍一不慎,就会被喷得满头满身。为此,我们在喷浆咀上加一个特制螺帽,在构件孔道留出车丝短管。使用时,将特制螺帽连接孔道短管的丝扣即可。改革后的喷咀使用轻巧,深受欢迎。 Pre-stressed post-tensioned reinforced concrete member’s channel grouting, generally using a mortar pump through rubber hose, nozzle, press the mortar into the hole. However, because the mortar was under pressure of about 5 atmospheres, it was laborious and insecure to use the manpower to grasp the nozzle, and if it was inadvertently, it would be sprayed with a full body. For this purpose, we put a special nut on the spray nozzle to leave a short tube in the hole of the component. When used, the special nut can be connected to the threaded hole of the short tube. The reformed nozzle is light and very popular.