The highway pavement repair method and material selection

Highway pavement diseases tend to have a centralized performance: pits and reinforced nudity, expansion joint grouting, in dealing with the above disease is a kind of material, I recommend using the name of the material polymer rapid repairing materials, this material can be divided into two kinds, one kind is grouting model, is a kind of plaster model, has good effect for highway pavement repairing, such repair type belong to repair, construction road for a long time will affect the traffic, using polymer fast structure repair material can achieve the result of two hours can open to traffic. Materials selection: polymer structure of rapid repair materials ( Grouting type) Characteristics: a certain gravity, fluidity can be up to 270 mm, is a kind of repair materials with early strong performance of the concrete structure. Since the tightness: without vibration, good fluidity can meet the demand of grouting, will repair the full range. Super early strength: early period with high intensity, about three hours to compressive strength is 30 million mpa, began coagulation reaction more than ten minutes. Status: product into the cement powder and cement as main raw materials. Polymer structure of rapid repair materials ( Plaster type) Super early strength: early period with high intensity, about three hours to compressive strength is 30 million mpa, began coagulation reaction more than ten minutes. Different from grouting type of usage, this kind of material for plastering construction to operation convenience simple, product is a powder cement color, add water mixing can be used. Repair method: first of all to the highway, the damaged concrete structures such as serious fill a clean, break the broken plate body with pneumatic pick into small pieces after clearance, will be the base of the plate body around the loose materials thoroughly cleared. Secondly in casting or plaster to interface was carried out on the basis of the material before construction, the general treatment method is, water sufficient moist, in the winter construction can be properly in warm water to wet. You can also use the 303 interface agent for processing interface structures. Third step after the material shall be carried out in accordance with the instruction manual water mixing, the worn surface of plaster or grouting can, time can't more than 30 minutes of mixing material as far as possible can be finished within 30 minutes. The last step for maintenance, maintenance and follow the standards of concrete curing, sprinkling water for curing.