Asphalt mastic

I. Introduction: HC-39 flame retardant mastic asphalt is the use of petroleum asphalt as the base material, the use of chemical adhesives, asphalt film formers, thickeners fiber stabilizers, pink sand and a small amount of fine aggregate composition? Mastic, coarse aggregate skeleton gap filling gap-graded asphalt composition of one of the mixture. With a high content of coarse aggregate, high levels of slag, a large amount of asphalt, the composition of the characteristics of low levels of intermediate particle size. High levels of coarse aggregate in the mix in direct contact with the surface of the particle surface, inset lock skeleton composed of direct bear loads, the skeleton of the temperature-sensitive small. High content of ore and bitumen cohesion was high gelling --- mastic, making the overall improvement of the mechanical properties of the mixture. The role of these two areas so that the mixture has a sufficient vertical and lateral restraint, when the vehicle load effect, produce no or only slight permanent deformation. It has an airtight, waterproof, frost resistance, resistance to cracking aging under ambient cold construction and other features. Widely used in moisture-proof layer, waterproof layer; road bridge expansion joints, and road maintenance and repair and other industries. Second, product characteristics: 1) a high rutting resistance and temperature stability; (2) good crack resistance; (3) good durability, as compared with conventional asphalt concrete, SMA's service life increased by 40% about. The use of modified bitumen can be further improved its performance; (4) better skid resistance; (5) the initial investment is high, but low considering the life of the average annual investment. Mastic should have appropriate heat resistance (key), depending on local conditions and extreme maximum temperature is determined by how much of the heat resistance. The heat is too low, summer liquescent flow; heat is too high, the winter cold crisp and easy to break. Mastic should have some flexibility, in the structure will not be pulled crack deformation. Mastic should have sufficient adhesion. ? Asphalt mastic should have appropriate heat resistance (key), depending on local conditions and extreme maximum temperature is determined by how much of the heat resistance. The heat is too low, summer liquescent flow; heat is too high, the winter cold crisp and easy to break. Mastic should have some flexibility, in the structure will not be pulled crack deformation. Mastic should have sufficient adhesion. Third, use: heavy traffic, airport runways, highway and paved road surface of the steel bridge. Fourth, the technical parameters: 1, Appearance:?? Black paste 2, volatile matter:?? 5 ± 25% 3, the oxygen index:??> 30% (OI) 4, cohesion:? 20 ℃ 1.5kg ? / cm2 5, specific gravity: 1600 ~ 1700kg / m3 6, heat resistance:?? at a temperature of 95 ℃, 45 degree oblique put four hours, the temperature rose to 120 ℃, 45 degree oblique resting one hour free flow of blistering . ? 7, antifreeze -40 ℃ ~ + 95 ℃ 2 hours without cracking each suspension, no detachment. ? 8, temperature: -40 ~ 95 ℃. ? 9, soak for 24 hours at room temperature water absorption, water absorption capacity of not more than 1% by weight of the sample. ? 10, Construction thickness: 6mm 12, the finger touching one hour drying time, all dry 60 hours?. ? 13 applicator, per square meter 12kg (including loss) 14, Packing:????? 25Kg / drum V, storage and transport: Storage temperature -5 ℃ -45 ℃, avoid exposure. From the date of shipment, storage period of 2 years; not tilted or placed horizontally transport, should pay attention not to damage the container. ?? VI Note:? 1 ,? handling process light moving, light, packaging prevent breakage. ? 2 ,? stored in a cool place and avoid prolonged sun exposure. ?? 3 ,? construction site to be ventilated, help dry. ?? 4 ,? remaining construction mastic to seal.