Slotted repair method is suitable for the small crack, foreign general crack treatment method using equipment, including slot machines and irrigation sewing machine, material used to fill joints designed for crack repair sealant (polymer modified asphalt), open tank size of at least 1 cm wide, 1 ~ 3 cm deep, grooving depth and width ratio should not exceed 2: 1, the ratio of the depth of the lower the better. Construction process slotting repair method generally divided into five steps.
Seven Trust Composite Floor Manufacturer - WPC green floorReady to work. Check the slot machines and irrigation sewing machine, to ensure their good technical condition; according to the specific circumstances of pavement cracks, fill joints to determine the design; irrigation sewing machine to start heating tank sealant add sealant, the sealant is heated and stirred until 193 ℃, can not exceed 204 ℃; heating during irrigation sewing machine trailer behind the main car, and the sealant side of the road, safety instructions signs, slot machines and shoulder mounted hair dryer or heat gun mounted on the main board, etc. and drag it to a predetermined construction sites, highway demi half closed as a construction zone.
Best Road Maintenance Machinery - Doan MachineryGrooved. By design slotted size, pre-adjusted slot machines slot depth, then slotted the job. When the job, according to the type of crack width, timely adjustment slot dimensions meet the minimum design requirements.Clean slot. With a shoulder mounted hair dryer or heat gun dust and debris inside the tank cracks on both sides at least 10cm wide, thoroughly cleaned. Pouring. If the temperature is below 4 ℃ fill joints, sealing machine shall be equipped with a preheating device for preheating grooved portions, if at this temperature without preheating proceeds to fill joints, reduces the adhesion of the sealant; If you fill joints at temperatures higher than 4 ℃, may be preheated, fill joints after warm-up effect is generally better. When the sealant heating temperature reaches 193 ℃, the pressure on the head with a sealing machine with Calibrating the sealant evenly poured into the tank, and on both sides of the crack dragged into a certain width and thickness of the seal layer.Conservation. After pouring sealant, sealant and sufficiently cooled in the debris on the road cleaned before they can open to traffic, the general cooling time is about 15min, specific traffic opening time can be flexible according to the temperature conditions.After several years of pouring proved irrigation sewing machine failure is the most important performance sealant and crack walls could not firmly bonded to the main technical performance with the sealant, whether clear and thorough tank construction at ambient temperature, So choose construction season and sealants for the construction of local environment is very important.
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