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Waterproof material for cement concrete bridge floor and preparation method of waterproof material

A technology of cement concrete and waterproof materials, applied in asphalt coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as single composition structure, poor high temperature resistance, and pavement layer shifting, and achieve firm bonding and smooth construction The operation is safe and convenient, and the effect of reducing the damage of the bridge structure

Active Publication Date: 2013-04-17
重庆市智翔铺道技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, water-emulsion waterproof coatings, such as APP modified asphalt materials, neoprene asphalt, etc., have a single composition structure, and the bonding strength with the cement concrete bridge deck is low. void phenomenon, resulting in surface waves, cracks, loose, potholes and other diseases
Solvent-based waterproof coatings have good adhesion to cement concrete bridge decks, but poor high temperature resistance
Reactive waterproof coatings have higher requirements on construction technology and are expensive

Method used

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  • Waterproof material for cement concrete bridge floor and preparation method of waterproof material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A waterproof material for cement concrete bridge deck, said waterproof material is 4,4-diphenylmethane diisocyanate MDI and composite polyol to generate amino methyl ester, then add No. 70 ordinary heavy traffic asphalt Modified by stannous octoate, compound defoamer and ethyl acetate;

[0023] Wherein the composite polyol oxidized polypropylene diol and oxidized polypropylene triol are mixed with a mass ratio of 3:1, the isocyanate group of the 4,4-diphenylmethane diisocyanate MDI and the hydroxyl group in the composite polyol The molar ratio is controlled to be 3:1.

[0024] The composite defoamer is Ca(OH)2 and emulsified silicone oil in a mass ratio of 1:1, and the consumption is 0.4% of the isocyanate.

[0025] The No. 70 common heavy traffic asphalt consumption is 80% of the carbamate;

[0026] Described stannous octoate consumption is 0.5% of isocyanate;

[0027] A method for preparing a waterproof material for cement concrete bridge decks, the s...

Embodiment 2

[0028] Embodiment 2: a kind of waterproofing material for cement concrete bridge deck, described waterproofing material is to generate carbamate by toluene diisocyanate TDI and composite polyol, add No. 90 common heavy traffic asphalt again through dibutyltin dilaurate, Composite defoamer and ethyl acetate composite modification;

[0029] Wherein the composite polyol oxidized polypropylene diol and oxidized polypropylene triol are mixed with a mass ratio of 2:1, and the molar ratio of the isocyanate group of the toluene diisocyanate TDI to the hydroxyl group in the composite polyol is controlled to be 5:1 .

[0030] The composite defoamer is Ca(OH)2 and emulsified silicone oil in a mass ratio of 1:1, and the consumption is 0.5% of the isocyanate.

[0031] The No. 90 common heavy traffic asphalt consumption is 85% of the carbamate;

[0032] Described dibutyltin dilaurate consumption is 0.6% of isocyanate;

[0033] A method for preparing a waterproof material for a cement con...

Embodiment 3

[0034] Embodiment 3: A kind of waterproof material for cement concrete bridge deck, described waterproof material is to generate amino methyl ester by 4,4-diphenylmethane diisocyanate MDI and composite polyol, then add No. 90 ordinary heavy-duty asphalt Modified by stannous octoate, dibutyltin dilaurate, compound defoamer and ethyl acetate;

[0035] Wherein the composite polyol oxidized polypropylene diol and oxidized polypropylene triol are mixed with a mass ratio of 4:1, the isocyanate group of the 4,4-diphenylmethane diisocyanate MDI and the hydroxyl group in the composite polyol The molar ratio is controlled to be 4:1.

[0036] The composite defoamer is Ca(OH)2 and emulsified silicone oil in a mass ratio of 1:1.3, and the consumption is 0.3% of the isocyanate.

[0037] The No. 90 common heavy traffic asphalt consumption is 75% of the carbamate;

[0038] Described dibutyltin dilaurate consumption is 0.6% of isocyanate;

[0039]A method for preparing a waterproof material...

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Abstract

The invention relates to a waterproof material for a cement concrete bridge floor and a preparation method of the waterproof material. The waterproof material is obtained by the following steps of: generating amino methyl acid ester by using isocyanate and compound polyalcohol, then adding ordinary heavy-traffic paving asphalt, and compounding and modifying by a tertiary amine catalyst, a compound antifoaming agent and ethyl acetate. The waterproof material can be firmly bonded with the cement concrete bridge floor, the resistance to high temperature and low temperature is good, the waterproof material can undergo comprehensive function requirements of temperature transforming and long-term loading, the destruction of the bridge structure caused by water seepage is alleviated, the service life of the road bridge is prolonged, the construction operation is safe and simple, the construction speed is high, the film forming time is short, the requirement on bridge floor construction is not high, and the construction can be carried out fast. The preparation method of the waterproof material is simple and easy to operate, the isocyanate, the compound polyalcohol and the ethyl acetate in a dehydrated state are not decomposed or oxidized in vacuum, so that the stability of each component is guaranteed and the prepared waterproof material has high solid content and good material performance.

Description

technical field [0001] The invention relates to a waterproof material and a preparation method thereof, in particular to a waterproof material for a cement concrete bridge deck and a preparation method thereof. The invention relates to a material used in bridge engineering and waterproof engineering. Background technique [0002] At present, the construction of highways, especially expressways, is developing rapidly in our country. In road construction, various bridges account for a considerable proportion of the total mileage of the road. For a long time, due to insufficient attention to the waterproofing of cement concrete bridge decks, roof waterproofing materials have been applied to bridges directly or after simple improvements. In actual engineering, problems such as water seepage on the bridge deck of overpasses, peeling of pavement layers, and broken bridge decks often occur in actual projects. As a result, bridges have durability problems such as steel bar corrosio...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D175/08C09D195/00C09D7/12C09D5/00C08G18/48
CPCC08G18/4812C08G18/4825C08G18/4829C08G18/7671C08L2201/08C08L2205/03C09D195/00C08L75/08C08L83/04C08K2003/2206
Inventor 吕春飞伍朝晖牟建波徐建晖代剑锋王远政
Owner 重庆市智翔铺道技术工程有限公司
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