Epoxy resin-modified rubber asphalt

A technology of epoxy resin and modified rubber, used in building components, building insulation materials, buildings, etc., to achieve good rutting resistance, extended service life, and less stress damage.

Inactive Publication Date: 2013-10-16
杨林江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Looking at the modification methods used at home and abroad, it is difficult to improve the adhesion, tensile strength and elongation at break of asphalt materials at the same time except for the epoxy resin modification method.

Method used

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  • Epoxy resin-modified rubber asphalt

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Embodiment Construction

[0011] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with examples, which are only used to explain the present invention, and do not constitute a limitation to the protection scope of the present invention.

[0012] Add rubber powder with 18% of the weight of asphalt to the base asphalt at 170~180°C, and after shearing and stirring for 1 hour, slowly cool down to 130°C, add compound compound with 40% of the weight of base asphalt to the rubber asphalt sheared at 6000 rpm Mix curing agent, 2,4,6-tris(dimethylaminomethyl)phenol (DMP-30) with 5% weight of base asphalt and epoxy resin E-51 with 5% weight of base asphalt to obtain component A; group B The component is E-51 epoxy resin; the components A and B are mixed according to the ratio of 2:1 by weight at 120°C for 20 minutes to obtain the epoxy resin modified rubber asphalt. The compound curing agent is prepared by reacting methyl hexahydrop...

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Abstract

The invention discloses epoxy resin-modified rubber asphalt which is a mixture comprising a component A and a component B, wherein the component A is prepared by adding rubber powder with the weight accounting for 18% of that of matrix asphalt into the matrix asphalt at the temperature of 170-180 DEG C, cutting and stirring for 1 hour, cooling to 130 DEG C, adding a compound curing agent with the weight accounting for 40% of that of the matrix asphalt, 2,4,6-tri(dimethylaminomethyl) phenol with the weight accounting for 5% of that of the matrix asphalt and a bulking agent with the weight accounting for 5% of that of the matrix asphalt into rubber asphalt obtained by cutting at a speed of 6000 r/min; the component B is E-51 epoxy resin; and the component A and the component B are mixed for 20 minutes at the temperature of 120 DEG C according to a weight ratio of 2 to 1 to obtain the epoxy resin-modified rubber asphalt. The epoxy resin-modified rubber asphalt is high in tensile strength, high in breaking elongation rate and good in fatigue resistance and fatigue durability, so that the epoxy resin-modified rubber asphalt is good in anti-rutting performance and is capable of remarkably reducing the stress damage and prolonging the service life of asphalt pavements.

Description

Technical field: [0001] The invention relates to the technical field of road building materials, in particular to a modified rubber asphalt. Background technique: [0002] Asphalt is viscous and elastic, and its performance is fluidity and anti-flowability. At high temperature, viscosity dominates, and asphalt is easy to flow; at low temperature, elasticity dominates, and asphalt shows anti-flowability. These characteristics are manifested in the pavement paved with asphalt. In the high temperature season in summer, rutting is prone to occur under heavy loads, and in the cold season of winter, temperature shrinkage cracks are prone to occur. This is mainly due to the low tensile strength of asphalt under high temperature conditions, and High brittleness and poor flexibility under low temperature conditions. Long-span steel box girder structure bridges put forward high requirements for the strength, deformation stability and fatigue durability of pavement materials, and at t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/02C08L21/00
Inventor 杨林江郎学美
Owner 杨林江
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