Water-proof method for road and bridge

Abstract

The waterproof method for road and bridge is to spray to brush water-thinned siloxane emulsion with organosilicon content of 0.2-5 % onto bridge concrete or road surface layer, with the applied amount being one kilogram of the emulsion each 3-12 sq m of work area. The seepage depth of the emulsion in bridge concrete or road surface layer may reach 2-20 mm. The present invention can raise the waterproof performance of bridge concrete or road surface layer, and water in bridge concrete or road surface layer may volatilize into atmosphere after passing through the hydrophobic layer, so as to increase the service life of road and bridge.

Description

Technical field: [0001] The invention relates to a method for waterproofing roads and bridges. Background technique: [0002] At present, when the bridge is put into use, when it encounters rainy and snowy weather, the rainwater penetrates the surface layer to reach the concrete surface of the bridge deck. Because the waterproof effect of the concrete is not good, the water penetrates into the concrete of the bridge deck, and the concrete undergoes the freezing and thawing of the internal moisture. The concrete structure is damaged, the concrete is loose, and then the bridge deck is damaged by pits. In the same way, during the use of the road, in rainy and snowy weather, the water reaches the pavement base through the cracks or pores of the surface layer. Because the waterproof of the pavement base is not good, the water penetrates into the internal material of the base, and the base material passes through the internal moisture. Freezing and thawing will destroy the intern...

AI Technical Summary

Problems solved by technology

[0004] Although the above methods have been adopted for waterproofing, the waterproof effect is not good

Adding waterproofing agent to bridge deck concrete, one is the high cost, 10-15 yuan of waterproofing agent is needed per square meter of bridge deck concrete, and 50-70 yuan of waterproofing agent is needed per cubic meter of concrete

Second, the process is complicated, and each tray of concrete has to be added and mixed

Applying oil or emulsified asphalt slurry on the base layer of the pavement, the cost is high, 7-9 yuan per square meter; The walking vehicle sticks off. The third is that the penetration depth is limited, generally 4-5 mm, and most of the penetration is solvent. The real waterproof component floats on the surface and is easy to be stuck by construction vehicles, so the waterproof effect is not good.

[0005] In addition, the above two methods only prevent water from entering from the outside to the inside, and the internal water is not easy to discharge. The lower part of the pavement base enters the interior of the base. When the ground air continues to rise, it will be blocked by the upper waterproof layer of the base. It cannot pass through the base and stay inside the base to condense into water, thereby destroying the internal structure of the base.