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Asphalt modified by epoxy resin and rubber powder

A technology of epoxy resin and rubber powder, used in building components, building insulation materials, buildings, etc., can solve problems such as reflection cracks in asphalt concrete, and achieve the effects of slowing down the reflection cracks on the road surface, good high temperature fluidity resistance, and increasing fatigue life.

Inactive Publication Date: 2007-12-12
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

But this kind of asphalt concrete paving on the semi-rigid base or on the old cement concrete pavement will appear reflection cracks, preventing and slowing down the generation of reflection cracks is still a big problem faced by the road engineering field.

Method used

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  • Asphalt modified by epoxy resin and rubber powder
  • Asphalt modified by epoxy resin and rubber powder
  • Asphalt modified by epoxy resin and rubber powder

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Experimental program
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Embodiment Construction

[0030] The invention is an asphalt modified by epoxy resin and rubber powder. The main materials are road petroleum asphalt, rubber powder, epoxy resin emulsion and curing agent, wherein the rubber powder, epoxy resin and curing agent are modified materials. The asphalt is modified with the above-mentioned modified materials, and the incorporation amount of the modified materials, namely rubber powder, epoxy resin and curing agent in the asphalt is determined. The weight percent of each component is as follows: 100 parts of asphalt, 3-20 parts of rubber powder, 1-5 parts of epoxy resin, and 15 percent of the curing agent of the epoxy resin.

[0031] 1. First, mix the epoxy resin and curing agent according to the ratio, inject it into the asphalt solution, grind and stir well, and the mixing temperature should be kept at 170°C.

[0032] 2. Add rubber powder with a particle size of no more than 40 meshes to the above-mentioned modified asphalt, control the temperature at 180°C, ...

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Abstract

The invention discloses a kind of modified asphalt with epoxy resin and rubber powder and solidifying agent. The weight proportion of said components is as follows: asphalt 100 units, rubber powder 3- 20 units, epoxy resin 1- 5 units, solidifying agent is 15% of that of epoxy resin. The penetration, softening point, low- temperature extension and torsional elasticity are better than that of normal asphalt. The modified asphalt is sticking material, and the flowability at high temperature and extension at low temperature is good. It can be used to repair asphalt concrete road surface and slow down the reflective crack generation, and increase life length for asphalt road.

Description

technical field [0001] The invention relates to modified asphalt used for road surface maintenance and repair, in particular to an asphalt modified by epoxy resin and rubber powder. Background technique [0002] Semi-rigid base and cement concrete pavement have the advantages of high rigidity, abundant material sources, strong diffusion load capacity, durable use, small daily maintenance workload, and stable structure. They occupy a large proportion in my country's high-grade pavement. However, due to problems in pavement structure design, construction, maintenance, and even overloaded operation, many cement concrete pavements have entered the maintenance period. Paving the asphalt concrete surface directly on the old cement concrete pavement, or paving the semi-rigid base layer on the old cement pavement for reinforcement and then paving the asphalt concrete surface layer, is a common method to improve the old road surface and increase the bearing capacity of the pavement s...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K5/1535C08L63/00C08L21/00
Inventor 张荣辉吕惠卿尹应梅
Owner GUANGDONG UNIV OF TECH
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