Polymer modification asphalt coating , PB - Ⅱ polymer modified asphalt Waterproof coating It not only has good elastoplasticity, heat resistance and cohesiveness of high molecular polymer, but also has Petroleum asphalt The products have good affinity and are suitable for construction under high temperature of asphalt concrete. PB-1 polymer modified asphalt waterproof coating is a polymer modified asphalt water-borne waterproof coating prepared by taking asphalt as the base material, modifying asphalt and adding water. PB-1 polymer modified asphalt waterproof coating is a national key new product door And reach the level of similar products. PB-1 polymer modified asphalt waterproof coating has been tested by Highway Engineering Testing Center of the Ministry of Communications, and all technical indicators meet the requirements of JC/T975-2005 standard; Meet the requirements of Technical Specification for Waterproof Engineering of Urban Bridge Deck (CJJ139-2010).
The water-based waterproof coating manufacturer is harmless, tasteless, free of environmental pollution, and cold construction; The main advantage is that the rubber in the modified asphalt forms a continuous network and penetrates each other, cross-linking, so that the modified asphalt presents a polymer performance; After the film is dry, keep the rubber elastic and flexible at low temperature; The shear resistance is strong. PB-1 type road and bridge uses polymer modified asphalt waterproof coating and short glass fiber composite construction to form a flexible bridge deck waterproof layer; Composite construction with silane impregnating liquid forms rigid and flexible bridge deck waterproof layer. PB-1 polymer modified asphalt waterproof coating can withstand the long-term load and compression of bridge deck, prevent structural damage caused by water seepage, and delay the service life of highway bridges. It is an ideal waterproof material for bridge deck.
1. Cold construction.
2. Simple construction, easy repair, low product viscosity, which can be sprayed or brushed; High construction speed and low labor intensity. When paving asphalt concrete, if the waterproof layer is damaged, just brush it again at the damaged place.
3. The material performance is good, the elongation after film formation is large, the crack resistance is good, the high temperature does not flow, the low temperature does not embrittlement, and the temperature resistance is good.
4. The adhesive strength and shear strength of asphalt concrete pavement and cement concrete bridge deck are improved, and the service life of asphalt concrete is extended.
1. Before the final setting of reinforced concrete bridge deck, the slab surface shall be roughened.
2. When the strength of the bridge deck concrete reaches more than 70%, the moisture content is not more than 15%, and there is no ponding on the surface, the waterproof layer can be constructed.
3. The bridge deck shall be flat, rough and tidy, free of concrete mortar, garbage, oil stains, steel bars and other sharp projections. Before spraying the waterproof layer, the dust shall be blown clean by high-pressure dust machine.
4. Before using waterproof coating, the coating shall be stirred evenly.
5. Waterproof coating shall be sprayed evenly in sequence, without exposed bottom and missed coating. Generally, it is better to spray twice.
When the dry film thickness of waterproof membrane is 1mm, its dosage is 1.5-2.0kg/m2, and the thickness of bridge deck coating film is generally about 0.5mm-0.7mm, and its dosage is 1.0-1.5kg/m2. The actual amount depends on the specific base level.
The first coat of paint is generally 3-6 hours (but not more than 24 hours) depending on the temperature. After the paint is dry, it can be applied twice and the third coat until the desired thickness is reached.
