Waterproof adhesive and preparation method thereof

Abstract

The invention discloses a waterproof adhesive, which is prepared from raw materials including 100 parts of asphalt, 10 to 50 parts of rubber, 10 to 50 parts of resin and 100 to 200 parts of solvent, wherein the asphalt is No.70, No.90 or No.110 petroleum asphalt; the rubber is natural rubber or / and synthetic rubber, and the synthetic rubber is styrene-butadiene-styrene (SBS) or / and neoprene; the resin is one or a random combination of more of petroleum resin, coumaroneindene resin and abietic resin; and the solvent is one or a random combination of more of isopropyl acetate, acetic ether, butyl acetate, isobutyl alcohol, isopropanol and ethanol. The waterproof adhesive is directly sprayed onto treated cement concrete pavement, bridge surface or steel bridge surfaces, and has low viscosity, high permeability, high waterproof performance, high adhesive force, high compatibility with and high affinity to asphalt concrete in a paved layer, the coating has high toughness and strength, the adhesive force for cement of the adhesive can reach over 1.2Mpa and the adhesive force for steel plate can reach over 1.5Mpa; meanwhile, the adhesive disclosed by the invention is nontoxic, safe and environmentally friendly, and the total content of benzene series is not more than 0.5g / kg.

Description

technical field [0001] The invention relates to a waterproof layer material and a preparation method thereof, in particular to a waterproof adhesive for paving roads, bridge decks and tunnels and a preparation method thereof. Background technique [0002] In the past, some bridges did not have a waterproof layer on the surface pavement, and mainly relied on vertical and horizontal slopes and discharge pipes to drain water. Although some bridge decks also had waterproof layers, their quality did not meet the requirements, resulting in water seepage in the bridge surface. , Pavement shedding, cement concrete alkali-aggregate reaction, steel bar corrosion, steel plate corrosion caused bridge damage. In order to protect bridge structures from seepage erosion, improve the durability of bridges and prolong their service life, great attention must be paid to the waterproofing of roads and bridges during the design and construction of roads and bridges. [0003] In foreign countrie...

AI Technical Summary

Problems solved by technology

Through research and analysis, the main problems of bridge waterproofing are as follows: first, bridge design problems, mainly manifested in problems caused by unreasonable pavement design, failure of waterproofing treatment at weak points of stress, and unreasonable waterproof design of bridge structures; second, waterproofing The material problem is mainly the lack of special waterproof materials for bridges; the third is that in the construction process, the quality of waterproof construction has not yet formed a unified operating procedure and acceptance standard, and there is a lack of professional waterproof construction teams for bridge projects

The high temperature resistance, impermeability, aging resistance, breakage resistance, high temperature shear resistance and low temperature crack resistance of waterproof coiled materials are all better than waterproof coatings, but the coiled materials are easy to bulge and cause sliding during construction; waterproof coatings have the advantages of simple construction, Low cost, low requirements on road surface flatness, good adhesion, etc., but the tensile strength and elongation of most coating films are low, and the adaptability to bridge deformation is poor, and rigid coating films are even worse

[0005] In addition, solvent adhesives in the market generally contain aromatic hydrocarbon solvents that are harmful to the human body and pollute the environment, threatening the health of production and construction personnel

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