Bitumen modifier for traffic tracking resistance and modified bitumen and mixer thereof

A technology of asphalt modifier and asphalt mixture, which can be applied to cohesive pavement, building insulation materials and roads paved on site. Consumption and loss, simple construction process, avoiding the effects of poor storage stability

Active Publication Date: 2007-10-31
深圳前海海川新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0052] In addition, there are modification methods such as polymers, fibers, and rubber powders; the limitations of traditional technologies: the addition amount is limited to 4-5%, which cannot fully meet the requirements of road use; in addition, cumbersome swelling, colloid, etc. Grinding for high-speed shear processing, segregation and other problems during storage
Some roads were severely damaged 1-2 years after they were built and used. Some road sections were damaged in a large area in the year they were opened to traffic, far short of the design life.
Second, the damage range is wide
Thir

Method used

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  • Bitumen modifier for traffic tracking resistance and modified bitumen and mixer thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Weigh SBS, 50 parts; SIS, 50 parts; SEBS, 50 parts; SEPS, 50 parts; PE, 5 parts. First heat the thermoelastomer to 40°C; under the condition of 20 min / rev, add polyolefin to the thermoelastomer, mix well; then raise the temperature of the mixture to 80°C within 10s, and then raise the temperature to 150°C within 15s, Finally, the temperature is raised to 200° C. within 5 seconds; the mixture is cooled, extruded, and packed into barrels to obtain the finished product.

Embodiment 2

[0104] Weigh SBS, 20 parts; PE, 300 parts; APP, 100 parts; LCDPE, 100 parts; EVA, 50 parts. Preparation process, condition are the same as embodiment 1.

Embodiment 3

[0106] Weigh SIS, 30 parts; SEBS, 80 parts; SEPS, 10 parts; PE, 50 parts; HDPE, 100 parts; PP, 300 parts; PE, 200 parts; LDPE, 200 parts. Preparation process, condition are the same as embodiment 1.

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Abstract

The invention discloses a pitch modifier for traffic anti-rut, modified asphalt and bituminous mixture, which is characterized by the following: allocating 20-200 wt thermoplastic elastomer ethenyl aromatic hydrocarbon-conjugated diene block copolymer and 5-950 wt polyolefin; setting the thermoplastic elastomer ethenyl aromatic hydrocarbon-conjugated diene block copolymer as SBS, SIS, SEBS and or SEPS; setting the polyolefin as PE, PP, EVA, APP, APAO, POE, HDPE, LDPE and or LLDPE; setting the mass percent of adding basic pitch at 1%-7%; increasing high-temperature behavior and anti-rut ability distinctively; modifying anti-water damage and anti-low temperature property. This craft is simple, which avoids the problem of bad stability of modified asphalt storage.

Description

【Technical field】 [0001] The invention relates to an asphalt modifier, in particular to an asphalt modifier for traffic anti-rutting, as well as modified asphalt and asphalt mixture. 【Background technique】 [0002] At present, the production methods of asphalt are: 1) distillation method; 2) solvent deasphalting method; 3) oxidation method; 4) blending method and the combination of these four processes. Among them, the asphalt raw material "crude oil" of modified asphalt is best to choose Chinese crude oil as the main crude oil, whose characteristics are similar to naphthenic crude oil and intermediate base crude oil, and choose crude oil including paraffin base, naphthenic intermediate base, paraffin intermediate base, etc. as auxiliary crude. [0003] Among them, the road asphalt produced by using naphthenic crude oil can be realized by atmospheric and vacuum distillation because it conforms to the penetration of road asphalt, and some can be obtained by atmospheric disti...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L23/00C08L53/02E01C7/22
Inventor 赵欣平汤惠工何唯平
Owner 深圳前海海川新材料科技有限公司
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