A kind of preparation method of foamed epoxy asphalt material

Abstract

The invention discloses a preparation method of a foamed epoxy asphalt material, which is prepared by mixing an epoxy resin with the remaining components of the foamed epoxy asphalt material; the epoxy resin and the foamed ring The mass ratio of the remaining components of the oxygen asphalt material is 1:1.5-6.3. It comprises 30-84 parts by weight of asphalt, 4-17 parts by weight of maleic anhydride, 20-42 parts by weight of diacetone acrylamide, 8-20 parts by weight of 2-methylimidazole, 3-10 parts by weight of tributyl phosphate Parts are mixed in proportion, then foamed, and epoxy resin is added and mixed. The preparation method of the foamed epoxy asphalt material provided by the present invention is to prepare the foamed epoxy asphalt material with high strength, high heat resistance and high fatigue life through modification of epoxy resin and curing agent, which is suitable for plateau road surface and tunnel pavement , winter construction pavement and other special roads. This material is suitable for special roads such as plateau roads, tunnel pavements, and winter construction pavements.

Description

technical field [0001] The invention relates to a preparation method of an epoxy asphalt mixture material capable of foaming treatment, in particular to a preparation method of a foamed epoxy asphalt material. Background technique [0002] Epoxy asphalt material originated in the United States in the 1960s, and then entered China at the beginning of this century. As a steel bridge deck pavement material, it has been used in my country's Nanjing Second Yangtze River Bridge, Runyang Yangtze River Bridge, Nanjing Third Yangtze River Bridge, Hangzhou Bay Bridge, It has been used in the pavement of long-span steel bridges such as the Zhanjiang Bay Bridge. It is a pavement material with excellent performance. It has high strength, high rigidity, good toughness, fatigue resistance, water stability, and excellent chemical corrosion resistance. Etc. [0003] Most of the curing systems in epoxy asphalt currently used are acid anhydrides and modified amines, all of which are high-temper...

AI Technical Summary

Problems solved by technology

However, most foamed asphalt cannot be foamed with modified asphalt such as SBS modified or rubber powder, because this type of modified asphalt has a high viscosity and little foaming effect, and foamed asphalt using only base asphalt often has insufficient strength. As a result, most of the foamed asphalt technology can only be used in base or repair projects, and its use and dosage are greatly limited.

[0005] The biggest construction drawback of epoxy asphalt used for steel bridge deck pavement is that the viscosity of the mixture rises too quickly during the process from paving to final pressure. However, the curing system in this type of epoxy asphalt is hydrophobic. During the construction process, it is necessary to strictly avoid contact with water. Directly foaming this type of epoxy asphalt will lead to problems such as the epoxy resin cannot be cured after adding it, and the waste is serious.

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