Spraying concrete Shotcrete equipment for tunnel
Spraying concrete Shotcrete equipment for tunnel uses the force of compressed air to spray the concrete with the quick-setting agent onto the rock surface or the surface of the building, and can fill the surface of the cracks and pits, the rock surface or the building is reinforced into a complete Stable, with a certain strength of the structure, so that the rock or structure to be strengthened and protected.
Spraying concrete Shotcrete equipment for tunnel, the process is different from that of dry-mixing shotcrete concrete machines. Dry shotcrete machines are used to spray dry materials, sand, cement, stone, and add water to nozzles without water. Water and dry matter are even mixed in the nozzle and sprayed to the working surface. Wet shotcreting machines are used to spray pre-wet concrete and to add promoters to nozzles instead of water.
Usually dry-spray concrete machines are used for slope protection, swimming pools, bridge maintenance, etc. for external engineering. Wet-spray concrete machines are used in indoor projects such as tunnels, mines, subways, etc. Compared with the dry shotcreting process, the wet shotcreting process is more intense and the painting effect is better for more important projects. For more detailed process information, please check the following images for reference.