Espectáculo de máquinas de hormigón proyectado de hormigón seco
maquina de shotcrete (concrete sprayer) uses compressed air to continuously transport the concrete along the pipeline and spray it onto the construction surface. There are two types of dry jet (right) and wet jet. The former is pneumatically transported. The dry mix is ??sprayed out at the nozzle and mixed with the pressurized water; the latter [...]