Huatong brand cold joint sealant produced by Yantai Huatong Company is a new one-component oily cold joint sealant with independent intellectual property rights, which is a national patent product. This product is a fast-curing oily material with excellent displacement resistance and waterproof performance. Absorb moisture in the air to react and solidify, with strong weather resistance, no flowing at high temperature and no brittle crack at low temperature, and can be constructed at 50℃ to -40℃. The product will not peel off after construction before and after rain, and it remains elastic. The color of cold joint sealant can be customized according to customer's needs to meet the needs of pavement crack treatment in various colors. It is mainly used for bonding and sealing cracks (joints) such as expansion joints, settlement joints, kerfs and construction joints of cement or asphalt pavements, squares, airport runways, roofs and basements. According to the determination, each kilogram of cold joint sealant can be used to pour cracks with a common width of 10-30 linear meters, and the total cost per meter of cold joint sealant for expansion joints, dust removal, glue pouring and gluing does not exceed that of 2 yuan.
building technology
1, joint swelling
The hand-held small saw blade seam expanding machine independently developed by Huatong Company has the advantages of small volume, light weight, free seam expanding activities and can track any turning and seam expanding.
Step 2 remove dust
Huatong's new type of eagle mouth blower is adopted to ensure the clean removal of floating dust, and at the same time completely remove the loose concrete slag left in the joint after expansion.
Step 3: filler
For wide and deep cracks, foam strips or quartz sand can be filled in the cleaned cracks before pouring glue, and a space of 25px is reserved for pouring glue.
Step 4 pour the glue
For cracks with a width less than 3 mm, it is necessary to enlarge the joint before pouring glue. Generally, the width of expansion joint is 4-8 mm, and the depth of expansion joint is 3-6 mm. Cracks with a width greater than 3 mm should be poured directly with special bags.
5. Open traffic
The surface drying time of joint sealant is less than half an hour. For cracks with a width less than 3cm, the traffic can be opened directly after pouring sealant. For wide and deep cracks, isolation sand can be laid on the surface for protection after pouring glue, or traffic can be opened after 24 hours.
6. Storage and packaging
Keep in a cool place, away from fire sources. Packing: 4 kg/bag, 30 kg/barrel. Shelf life: 24 months in bags and 0/2 months in barrels.
Yantai Huatong Road Engineering Co., Ltd. is the first manufacturer of asphalt cold patching materials in China. Its main products are: asphalt, cold joint sealant for cement pavement, joint adhesive tape, color cold patching material, interface agent, sealing asphalt, cold patching asphalt and materials for repairing broken skin and pitted surface of cement pavement.
Common repair materials for highway diseases: 1. Asphalt cold patching can be used to repair pits and grooves, and can be directly repaired and opened to traffic; 2. Cold joint sealant can be used for cracks in cement pavement, which can be directly opened to traffic, and the cost per meter is not higher than that in 2 yuan. 3, asphalt pavement cracks can use joint tape, according to the direction of cracks, joints will be integrated with the original asphalt pavement after 2 months, will not jump, will not affect the snow removal in winter; 4. The damaged surface of cement pavement can be repaired with quick repair materials, with a 5 mm thin layer and open to traffic for 2 hours; 5. The color cold patching material can be used to pave or repair the potholes on a small area of colored pavement. At the construction site, bags can be unpacked, laid and compacted, and then they can be opened to traffic.