Permeability: permeability and water absorption are two different issues! The size of the air molecules and water molecules are very different! Of course there are breathable waterproof argument. Experiments can illustrate this point. Figuratively, in Shenzhen. Place a cookie on the outside, you do not go on watering biscuits, time of day, cookies will fall, because it absorb water, and water is sucked water from the air rather than liquid water. Currently we have insulation system, which products do not dare call themselves the product both permeability, thermal conductivity and good, waterproof performance is good, not the water-absorbing insulation board manufacturer Which is good, good for a full accounting. Because these indicators are contradictory. But also pay attention to ventilation breathable construction process after wet water permeability and the system after completion. Extruded insulation board on the highway with its paved roadbed process is not complicated, xps extruded insulation board usually placed in permeable pellets above embankment Zhangqiu ordinary compared with the laying of insulation board manufacturer, but more when roads Place a layer of geotextile fabric covering Laizhou insulation board manufacturer, with a thick Paving a level working surface, xps extruded insulation board laid on top, then add a layer of reinforced concrete slab used as a protective layer to disperse the load of asphalt paved in top. Mainly because it can withstand greater traffic load, while its lightweight waterproof, xps extruded insulation board has a better foundation than normal ability to prevent the partial collapse of the road. Our extensive area, highway construction on China's economic development has a great significance. Another big advantage of using xps extruded insulation board as roadbed filler is low cost. And compared to natural soil to fill roadbed, since filling the xps extruded insulation board Further, subgrade xps extruded insulation board EPS packaging materials can be used to produce recycled materials. In addition, the settlement produced after the completion of road works small, long-term use without damage insulation board manufacturer, so its less maintenance, low cost. Depending on the stage of road traffic development goals by 2010, the total mileage and strive to reach 2.1 million & # 8764; 2.3 million km, fully completed "five vertical and seven horizontal" national trunk road, highway mileage reached 50,000 kilometers. By 2020, the total mileage will reach 2.6 million & # 8764; 3 million kilometers. Highway mileage of 70,000 km or more, connect all the current population of more than 200,000 of the city, basically formed the national highway network. These hundreds of thousands of kilometers of road construction will subgrade development xps extruded insulation board the laying of a Sunshine Boulevard, the market is very promising.