Super absorbent polyurethane adhesive appears on the streets of Xiamen in recent days, the rainstorm in the South has led to weak market prices in many cities. It is learned that at the east station of the bus computer system of Xiamen Shuangshi middle school, which needs to complete a/d conversion, data calculation and waveform display of one or more data channels, there is a "water absorption" color road only 60 meters long. Compared with the road paved with asphalt and permeable bricks, this road with stronger water permeability is made of "polyurethane adhesive color gravel"
it is reported that this is a pilot section specially created by the municipal department. Last year, the "May 16" rainstorm caused waterlogging in the city, and one of the root causes was the hardening of urban roads. For this reason, this kind of water absorption Road, which is expected to alleviate waterlogging, has attracted much attention since its emergence in Xiamen
super absorbent polyurethane adhesive road appears in Xiamen street
polyurethane adhesive pavement "instant absorption"
according to the description of the construction department, this magical color water seepage road has extremely strong water permeability, with a water permeability of up to 90%. Compared with the most common asphalt pavement and permeable brick in Xiamen, what is its water permeability? Three bottles of 500ml water were prepared and measured with a meter to conduct field PK and test on the water permeability of three different pavement materials
first, pour a bottle of water into the asphalt pavement. In about 1 minute, the water did not immediately penetrate, but remained. After a few minutes, part of the water on the pavement diffused outward, and the other part began to slowly penetrate downward. The whole process lasted for several minutes, and the water on the asphalt pavement slowly "disappeared"
then, pour another bottle of water into the permeable brick next to it. The water gradually seeps downward. Compared with the asphalt pavement, the water permeability of permeable bricks is much better. After about two minutes, most of the water is sucked dry
pour the third bottle of water into the colored permeable pavement. Once a full bottle of water is poured out, it immediately seeps in, and the water is completely penetrated on the spot. In the same "water absorption" competition, compared with permeable bricks, the water seepage speed of color permeable pavement is faster and more thorough
if a sponge dries the rain, Ms. Wu, who is waiting for a bus at the east station of the bus station of Shuangshi middle school, noticed such a "magical" phenomenon: the rain has been falling all the time, the newly built asphalt slow lane near the bus station has been flowing, and the sidewalks paved with permeable bricks have accumulated water everywhere, but the colorful road under her feet is only wet. "The rain that fell to the ground almost immediately seeped into the ground. It's amazing." Ms. Wu described it in her more important. According to reports, the laying process of this magical road is not complicated: first, the foundation cushion, the main material is gravel; The second is the permeable layer. Use polyurethane adhesive to bond the selected colored gravel in proportion, and then use the paver to pave and compact it. The process of "polyurethane adhesive color gravel produced by BASF company, a German patented and world leading chemical enterprise", is currently introduced by Xiamen Meili Coast Building Materials Co., Ltd
this magical road praised by Ms. Wu is actually a colorful road paved at bus stops with new materials of German urban seepage Road, with a length of only about 60 meters. It is confirmed from the relevant person in charge of the municipal construction department that this magical color road is a new pavement material in Xiamen. At present, it is a test section
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