Treating mineral or concrete surfaces such as road surface using a movable cabin, comprises preparatively cleaning the surface, and applying wet graining projection of abrasive product containing free silica under high pressure

摘要

The process of treating mineral or concrete surfaces using a movable cabin, comprises preparatively cleaning the surface, and applying wet graining projection of abrasive product containing less than 5 wt.% of free silica under high pressure. The projection is performed at a pressure of 350 bars and a water flow of 40 liters per minute. The rinsing step is carried out progressively as the progress of the work of graining water flow with a pressure of 150 bars. The graining is of water-pneumatic type, and carried out with a lance of treatment under high or low pressure treatment. The process of treating mineral or concrete surfaces using a movable cabin, comprises preparatively cleaning the surface, and applying wet graining projection of abrasive product containing less than 5 wt.% of free silica under high pressure. The projection is performed at a pressure of 350 bars and a water flow of 40 liters per minute. The rinsing step is carried out progressively as the progress of the work of graining water flow with a pressure of 150 bars. The graining is of water-pneumatic type, and carried out with a lance of treatment under high or low pressure treatment and with a mixture of adhesive product, water and air with the proportion of 10%, 80% and 10% respectively. The high pressure is used for projecting the adhesive product, and low pressure is used for rinsing. The adhesive product is a non-homogenous sharp angular granulate originated from minerals based of low mass of alumino silicate glass obtained by controlled fusion at high temperature. The granulometry (0.2-0.3 mm) of the adhesive product is obtained by a slipping co-efficient of 0.35-0.65 measured by a skid resistance tester. The step of preparatively cleaning comprises mechanical cleaning or drying with water to remove non-adherent dirt, degreasing a detergent by spraying, washing the surface with a cyclone jet on a water cushion under a pressure of 200-250 bar and a water flow of 45 liters per minute, and finally rinsing by a plate jet under a pressure of 300-350 bar for removing residues remaining on the surface.