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New composite modified rubber asphalt and preparation process thereof

A compound modification, rubber asphalt technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of difficult to meet market demand, poor compatibility between asphalt and rubber powder, low production volume, etc. Convenience of construction, enhanced expansion and contraction performance and anti-fatigue ability, and the effect of expanding the scope of use

Inactive Publication Date: 2011-06-08
尹泽珲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of rubber-modified asphalt in recent years, its importance has become more and more important, and the market demand has also increased. However, traditional rubber-modified asphalt and its preparation process have poor compatibility and poor performance between asphalt and rubber powder. The problem of low production volume, it is difficult to meet the demand of the market

Method used

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  • New composite modified rubber asphalt and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The new composite modified rubber asphalt is made of the following raw materials: 500g of base asphalt, 125g of rubber powder, 15g of polyethylene, 5g of chlorinated petroleum ester and 1g of barium stearate.

[0011] The following steps are used in the preparation: add polyethylene and rubber powder to the base asphalt at 175°C and mix evenly, then add chlorinated petroleum esters, pass through a shearing machine to form a mixture, and send the mixture into the aging tank for aging at 175°C for 30 minutes. The stirring speed of the aging tank is 90 rpm, and barium stearate is finally added to keep for 60 min.

Embodiment 2

[0013] The new composite modified rubber asphalt is made of the following raw materials: 500 g of base asphalt, 140 g of rubber powder, 20 g of polyethylene, 10 g of chlorinated petroleum ester and 1.5 g of barium stearate.

[0014] The following steps are used in the preparation: add polyethylene and rubber powder to the base asphalt at 178°C and mix evenly, then add chlorinated petroleum esters, and form a mixture through a shearing machine, and send the mixture into the aging tank for aging at 178°C for 35 minutes. The stirring speed of the aging tank is 100 rpm, and finally barium stearate is added to keep for 80 min.

Embodiment 3

[0016] The new composite modified rubber asphalt is made of the following raw materials: 500 g of base asphalt, 150 g of rubber powder, 25 g of polyethylene, 15 g of chlorinated petroleum ester and 2 g of barium stearate.

[0017] The following steps are used in the preparation: add polyethylene and rubber powder to the base asphalt at 180°C and mix evenly, then add chlorinated petroleum esters, and form a mixture through a shearing machine, and send the mixture into the aging tank for aging at 180°C for 40 minutes. The stirring speed of the aging tank was 110 rpm, and finally barium stearate was added to keep for 90 minutes.

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Abstract

The invention belongs to the technical field of asphalt and particularly relates to new composite modified rubber asphalt and a preparation process thereof. The new composite modified rubber asphalt is prepared from the following raw materials in parts by weight: 100 parts of matrix asphalt, 25-30 parts of rubber powder, 3-5 parts of polyethylene, 1-3 parts of chlorinated petroleum ester and 0.2-0.4 part of barium stearate. In the new composite modified rubber asphalt of the invention, chlorinated petroleum ester is used to increase the expansion properties and fatigue resistances of rubber powder and polyethylene; and calcium stearate is added to improve the oxidation resistance and stability of rubber asphalt, increase the construction convenience of rubber asphalt and expand the application range of rubber asphalt.

Description

technical field [0001] The invention belongs to the technical field of asphalt, and in particular relates to a novel composite modified rubber asphalt and a preparation process thereof. Background technique [0002] The use of waste rubber powder to modify asphalt has a history of many years in foreign countries. The research on the application of waste rubber powder modified asphalt to roads in my country began in the 1980s. Since the 21st century, the research on rubber asphalt in my country has been increasing. Big. Comprehensive domestic and foreign research shows that rubber asphalt has been recognized and applied to a considerable extent in foreign countries due to its excellent fatigue resistance, high temperature performance and water damage resistance, and is an ideal choice for highway asphalt pavement overlay projects. With the development of rubber-modified asphalt in recent years, its importance has become more and more important, and the market demand has also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L21/00C08L23/06C08K5/098E01C7/26
Inventor 尹泽珲
Owner 尹泽珲
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