Asphalt mildew proof and waterproof paint for bridge building and production method thereof

Abstract

The invention relates to asphalt mildew proof and waterproof paint for a bridge building. The asphalt mildew proof and waterproof paint is prepared from the following raw materials in parts by weight:50 to 65 parts of 90# asphalt, 60 to 70 parts of water, 25 to 28 parts of neoprene latex, 5 to 7 parts of emulsifiers, 2 to 4 parts of polyvinyl alcohol, 1 to 3 parts of coupling agents, 5 to 7 partsof polyoxyethylene polyoxypropylene ether, 4 to 8 parts of mildew preventives, 3 to 5 parts of plasticizers of trihexyl O-acetylcitrate, 0.1 to 0.5 part of glycerol ester of hydrogenated rosin, 1 to3 parts of sodium carboxymethylcellulose and 10 to 15 parts of modified nanometer calcium carbonate. The prepared asphalt mildew proof and waterproof paint has the advantages that the film forming compact is high; the stability is high; when the paint is used in the bridge building, the bonding intensity of a formed waterproof layer and a cement concrete base surface is high; the waterproof effectis good; through modification, the properties, such as the mildew proof property, the anti-aging property and the acid and alkali resistant properties, of the product can be greatly improved; in addition, the manufacturing process is simple; the defects of manufacturing complexity, poor film forming compactness, poor waterproof performance and poor anti-aging performance of the existing water emulsion asphalt paint can be overcome.

Description

Technical field [0001] The invention relates to the field of chemical coatings, in particular to an asphalt mildew-proof and waterproof coating for bridge construction and a production method thereof. Background technique [0002] In recent years, my country's road construction has developed rapidly, the road level has been continuously improved, and the proportion of bridge structures has increased. Bridge construction has played an increasingly important role in the road industry. As an important link of the road, the normal use of bridges plays a very critical role in the operation of the road. Reinforced concrete is a large amount of structural materials used in today’s bridge engineering. Its particularity leads to the most serious impact on water. Especially due to rainfall, a large amount of rainwater accumulates on the bridge area. Although there is a bridge deck drainage system, there is still a small amount of rainwater. Infiltrate into the structure through small gaps...

AI Technical Summary

Problems solved by technology

[0003] At present, there are three main problems in bridge waterproofing: (1) structural design problems, mainly due to unreasonable pavement design and weak links without waterproofing; (2) the quality of special waterproof materials for roads and bridges in the market is poor, and most of them do not meet the requirements. Technical index requirements; (3) The quality of waterproof construction has not yet passed, and there is no special specification and acceptance standard for road and bridge waterproof construction

But above-mentioned three documents all do not carry out modification to its adopted filler such as barium sulfate, mica powder and talcum powder etc. when preparing asphalt waterproof coating, and the filler that does not carry out modification is filled in when preparing coating There are obvious disadvantages in various polymers: first, the surface is hydrophilic and oleophobic, and the dispersion in the polymer is poor; second, the binding force with the polymer body is poor, and it can only act as a compatibilizer

However, the production of water-emulsified asphalt is cumbersome, and the biggest disadvantage is that because it is water-based, its film-forming compactness is poor, so waterproof and aging resistance are poor; and solvent-based asphalt cannot be used indoors due to the presence of a large amount of harmful organic substances.

Moreover, the current water-based asphalt-based waterproof coatings on the market have poor stability, poor alkali resistance and acid resistance, and various technical indicators are difficult to meet the relevant requirements.

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