Epoxy bitumen material for highway and road bridge and preparation method thereof

Abstract

The invention relates to an epoxy bitumen material for a highway and a road bridge and a preparation method thereof. The epoxy bitumen material comprises a part A and a part B in mass ratio of 2.0-3.5:1, wherein the part A comprises the following components in parts by mass: 300 parts of bitumen, 90-250 parts of tung oil modified epoxy rein, 30-90 parts of dicarboxylic acid of aliphatic series or anhydride of dicarboxylic acid polyaliphatic series, 0-1 part of epoxy resin curing agent and 40-70 parts of unsaturated anhydride; and the part B comprises epoxy resin or / and epoxy-containing glycidyl ether. The preparation method comprises the step of: uniformly mixing materials of the part A except for the bitumen and the part B into the bitumen. The prepared epoxy bitumen material is cured, a system is in a homogeneous phase, and the cured product has the advantages of high strength, high extending ratio and ultra fatigue resistance property, simple process and short production period. The invention is used in occasions with higher strength of the highway, the road, and the like, and can be used for repairing an arterial street, a bus stop, an airport road surface, a road surface, and the like, such as pouring cracks.

Description

technical field [0001] The invention relates to a novel epoxy asphalt material for highways and road bridges and a preparation method thereof. Background technique [0002] The main component of petroleum asphalt is a mixture of aliphatic hydrocarbons and aromatic hydrocarbons, and its solubility parameter is about 8.66, while the solubility parameter of epoxy resin is 10.36, so it is difficult to be compatible. In order to effectively prepare epoxy asphalt raw materials, scientists have adopted the following processes: co-solvent method, modified asphalt method, special epoxy resin method and modified curing agent method. For example, in U.S.Pat.3,012,487, pine tar is used as a co-solvent for epoxy resin and asphalt, and diethylenetriamine, phthalic anhydride, etc. are used as curing agents to successfully prepare epoxy asphalt bonding materials and apply them to concrete surfaces. And in the roadbed, a hard, rough, solvent-resistant anti-skid coating is obtained. Obviousl...

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Problems solved by technology

For example, in U.S.Pat.3,012,487, pine tar is used as a co-solvent for epoxy resin and asphalt, and diethylenetriamine, phthalic anhydride, etc. are used as curing agents to successfully prepare epoxy asphalt bonding materials and apply them to concrete surfaces. And in the roadbed, a hard, rough, solvent-resistant anti-skid coating is obtained. Obviously, pine tar remains in the system as a solvent, which has a great impact on the performance of the material, and the obtained product is hard and brittle; U.S. Two active co-solvents were synthesized in Pat.4,360,608, and the situation of using phenols (such as nonylphenol, etc.) Phase, but the bending strength is low; U.S.Pat.: 4,139,511 uses a small amount of maleic anhydride (5%, 10%) or maleic anhydride ester to modify asphalt at high temperature, and found that the obtained asphalt is compatible with epoxy The resin has good compatibility. When polyamide with an amine value of 315 is used as the curing agent, the maximum tensile strength of the obtained material is 2.1MPa and the elongation is 60%. High temperature above 200°C, long reaction time, high energy consumption, and the elongation rate is still very small compared with the epoxy asphalt of Chemco System used in the current project, which is difficult to meet the requirements of some steel bridge deck pavements; CN200710019324.X adopts modified tung oil anhydride and modified ricinoleic acid to mix as curing agent, and the maximum elongation at break of the prepared epoxy asphalt is 441%, and the tensile strength is 5.62MPa, but its domestic application is not yet very wide

[0003] However, at present, domestic epoxy asphalt still mainly relies on imports, and its price is very expensive (about 10-20 times that of ordinary asphalt), and the domestic research and development of epoxy asphalt is only in its infancy.

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