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Emulsible epoxy bitumen material and preparation method thereof

An epoxy asphalt material and asphalt technology, which is applied in the proportioning of the material and its preparation field, can solve the problems of emulsified asphalt technical limitations, inability to cure, viscosity increase, etc., and achieve short operation time, reduce construction gas emissions, The effect of high fatigue life

Pending Publication Date: 2016-06-15
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most common modified asphalt is SBS modified asphalt. However, due to the high viscosity of SBS modified asphalt, it is difficult to emulsify it with the current emulsification technology, so the development of emulsified asphalt technology is limited, and most of them can only be used between layers. or in maintenance
[0004] 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. In the process of construction, it is necessary to strictly avoid contact with water. Directly emulsifying this type of epoxy asphalt will cause problems that the curing components are insoluble in water and cannot be cured after adding epoxy resin.

Method used

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  • Emulsible epoxy bitumen material and preparation method thereof
  • Emulsible epoxy bitumen material and preparation method thereof
  • Emulsible epoxy bitumen material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Component A is a mixture of my country's brand bisphenol A epoxy resin E-51 and E-54 in a ratio of 1:2; component B consists of 31 parts by weight of asphalt, 0.5 parts by weight of emulsifier, and 6 parts by weight of Phthalic anhydride, 8 parts by weight of 2-methylimidazole, 10 parts by weight of triethylenetetramine, 4.5 parts by weight of tributyl phosphate and 40 parts by weight of water; Keep warm for 1 hour under the environment, and the temperature of stone and mineral powder are both at room temperature when mixing.

[0045] The mass ratio of component A to component B is 1:3.9.

[0046] Grading screening was carried out according to Table 1.

[0047] Table 1 AC-13 Mixing Ratio of Mixture

[0048] particle size

Embodiment 2

[0050] The emulsified epoxy asphalt material prepared by the present invention is formed by mixing two components, A and B. The A component is a Chinese brand bisphenol A epoxy resin E-51 (single component, no other brand); the B component By the pitch of 32 parts by weight, the emulsifier of 0.5 parts by weight, the phthalic anhydride of 5 parts by weight, the 2-methylimidazole of 6 parts by weight, the triethylenetetramine of 8 parts by weight, the tributyl phosphate of 3.5 parts by weight Esters and 45 parts by weight of water. Before mixing, before mixing, component A is kept at 30°C for 1 hour, and the temperature of stone and mineral powder is at room temperature during mixing.

[0051] The mass ratio of component A to component B is 1:4.1.

Embodiment 3

[0053] Ordinary base asphalt is emulsified to prepare conventional emulsified asphalt. The domestic Zhonghai No. 70 base asphalt is selected, and the asphalt index is shown in Table 2. Then carry out normal temperature mixing, all the other materials and process are with embodiment 1.

[0054] Table 2 Conventional indicators of base asphalt

[0055]

[0056] Carry out mixture design through Marshall method first, the target porosity of mixture in three kinds of embodiments is the same, is 4%, selects five kinds of asphalt dosages: 3.4%, 3.7%, 4.0%, 4.3% and 4.6%; Marshall compaction molding, void ratio calculation results are shown in Table 3.

[0057] Determination of asphalt consumption in three groups of embodiments of table 3

[0058] Asphalt consumption (%)

[0059] The emulsified epoxy asphalt of the present invention can be used for paving the asphalt upper layer in tunnels or low-temperature areas, and can also be used for paving middle surface layer, low...

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Abstract

The invention relates to an emulsible epoxy bitumen material. The emulsible epoxy bitumen material comprises a component A and a component B. The component A is bisphenol A epoxy resin. The component B comprises, by weight, 30-65 parts of bitumen, 0.2-2 parts of emulsifier, 3-8 parts of phthalic anhydride, 10-22 parts of triethylene tetramine, 4-10 parts of 2-methylimidazole, 3-10 parts of tributyl phosphate and 30-50 parts of water. The mass ratio of the component A to the component B is 1:(2-6.3). The prepared emulsible epoxy bitumen material can be mixed at normal temperature and has the advantages of being long in construction operable time, good in adhesive force, high in strength, high in heat resistance, long in fatigue life and the like. Due to normal temperature mixing, construction harmful gas emission is greatly reduced, the emulsible epoxy bitumen material can be applied to pavement of a tunnel road surface, and the harm to constructors is reduced. Meanwhile, the emulsible epoxy bitumen material can solve the problem that ordinary epoxy bitumen is short in operable time when applied to surfacing construction.

Description

technical field [0001] The invention relates to an epoxy asphalt mixture capable of emulsification treatment, in particular to the proportion of the material and its preparation method. 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. However, most of the curing systems in epoxy asphalt currently used are acid anhydrides and modified amines, all of which are high-temperature curing systems, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/02C08G59/42C08G59/58C04B26/26
CPCC04B40/0039C08G59/4284C08G59/58C08L95/00C04B2111/0075C08L2201/08C08L2555/80C08L63/00C04B24/281C04B24/36C04B24/04C04B24/121C04B24/128C04B24/003
Inventor 温学钧黄明何昌轩
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP