“干一湿”热介质定向循环养护工艺是将混凝土构件成型后不需要经过常温静停,就可以直接装入坑窑内,进行干烘养护,这样由于介质温度高,相对湿度低,可使混凝土中的部分游离水分蒸发,以致消除泌水层,起到了降低水灰比的作用,而使混凝土构件在短时间内形成一定的结构强度,能经得起内部气水肿胀的破坏作用,这时再进行热介质 The “dry-wet” heat medium oriented circulation maintenance technology is to form the concrete components without going through the static shutdown at room temperature, and then it can be directly installed in the pit kiln and dry-baked and cured. Because of the high medium temperature and low relative humidity, Part of the free water in the concrete evaporates, so that the bleeding layer is eliminated, which plays a role in reducing the water-cement ratio, so that the concrete components can form a certain structural strength in a short period of time and can withstand the destructive effect of internal gas-water swelling. Heat medium