Dry shotcrete machine have been used more and more in relief paints, grouting and other fields. In terms of interface treatment, the construction habits and thinking patterns inherent in the industry are difficult to break, and they have not been popularized yet.
For interface processing, the advantages of dry shotcrete machine are the continuity of spraying point and fast and high efficiency. The machine itself has extrusion equipment, the slurry can be squeezed out at a uniform speed, supplemented by the power of air compressor air pipe blowing Quickly and evenly sprayed on the wall, the spray points are even and large, and the effect of pulling "hair" is very obvious. Moreover, due to the squeezing effect of the equipment, the thicker slurry can be squeezed out, and the thin consistency of the worker mixing slurry has little effect on the spraying effect and efficiency. In terms of economy, this method also has considerable cost advantages. Ordinary spraying machine with a slurry output speed of 6L / min is calculated according to the amount of 0.6Kg / m2 (the dry weight of the interface agent is 1.6Kg / m3). The hourly calculation is 7680m2 (after deducting the influence of various factors, 3840m2 is converted into five discounts), the labor cost is 600 yuan (according to three people, 200 yuan per person per day). The total labor cost of spraying interface agent on site is 0.16 yuan / m2. The labor cost is far less than the treatment method of preparing and patting the hair on site (an average of about 0.5 yuan / m2). Therefore, the labor cost of spraying construction with dry shotcrete machine is low, and the processing interface with good "hair" pulling effect can be quickly and easily obtained, and the construction speed and construction effect can be easily and stably controlled. The most promising way.
