Control point of sticky layer oil construction

(1) The spreading of the emulsified asphalt in the sticky layer must use a special asphalt spreading truck. The advanced asphalt spreading truck itself has a thermal oil heating system and a computer control system that automatically controls the amount of spreading. The spreading width and the amount of spreading are both It can be adjusted automatically according to the needs, each spray nozzle is controllable, thus ensuring the balance of the amount of spray and the uniformity of the spray.

(2) The accurate calibration method of the spraying amount of the asphalt spray truck without computer control system is to record the speed of the speed spray pump of the asphalt spray truck and the height of the nozzle from the ground, and then cut a piece of 1m 1m cardboard , Weigh the weight, lay it on the surface of the asphalt layer, weigh it again after sprinkling the emulsified asphalt of the sticky layer, back calculate the amount of emulsified asphalt and the speed of the asphalt sprayer's speed spray pump, and determine the parameters between the parameters relationship.

(3) When spraying the sticky layer emulsified asphalt with a special asphalt sprayer, the amount of spraying is 0.3 0.6 L m-2 (the residue content in emulsified asphalt is based on 5%)

Construction Notes:

(1) The emulsified asphalt of the sticky layer should be evenly spread or brushed, and do not overspray

(2) If there are dirt or dust on the pavement, it should be cleaned, if there is sticky soil, it should be washed with water, and the emulsified asphalt of the sticky layer should be poured after the surface is dry.

(3) The sprayed sticky layer oil must be uniformly mist-shaped, evenly distributed in a thin layer across the entire width of the road surface, and there should be no leaks or strips of sprinklers, and no accumulation. Should be scraped

(4) After spraying the sticky layer of oil, vehicles (except asphalt mixture transport vehicles) are strictly forbidden to pass by pedestrians

(5) When the temperature is below 10 or it is raining, the emulsified asphalt of the sticky layer shall not be poured

(6) The emulsified bitumen of the sticky layer should be spread on the same day. After the emulsion demulsification moisture evaporates, the upper layer of asphalt is paved immediately to ensure that the sticky layer is not contaminated.