In tunnel culvert engineering, anchors and reinforcements are generally planted first, and then shotcrete is sprayed on the ramp using a mine shotcrete machine. Now more and more mining projects are using wet shotcrete machine, now we compare wet shotcrete machine with dry shotcrete machine.
First, the mix ratio of concrete. The wet spraying process of the shotcrete machine is better than the dry spraying. During the construction process, the concrete required by the wet shotcrete machine is injected into the shotcrete machine for spraying after production and production according to the production process, and the mixing ratio is completely controlled, so that the quality of the concrete is more guaranteed. The mix ratio of the dry shotcrete machine is not easy to control, especially the water-cement ratio of the concrete is arbitrary. It is completely based on the experience of the construction personnel. The quality of the concrete is largely controlled by the construction personnel’s operation, which is not very good. Protection.
Secondly, the wet shotcrete machine has a lower rebound rate than the dry spraying, which can greatly reduce the production cost. The wet shotcrete machine improves the production efficiency. Again, the wet shotcrete machine has a lower dust concentration than the dry shotcrete machine. In the spray construction of concrete, due to the dust concentration and other reasons, the visibility of the construction site is low, so that the construction personnel only pay attention to the spray quantity and ignore the quality, causing waste, and Dust is very harmful to the health of construction workers.
Finally, the wet spraying of the shotcrete machine is less abrasive than the dry shotcrete machine. Because the spraying machine wet shotcrete machine process has the above advantages compared with the dry shotcrete machine spraying process in the construction, in order to improve production efficiency and ensure the construction quality, in the future tunnel culvert project, the wet shotcrete machine spraying process will replace the dry shotcrete machine spraying process!
