Asphalt mixture anti-rutting additive and preparation and use method thereof

A technology of anti-rutting additives and asphalt mixtures, applied in building insulation materials, building components, buildings, etc., can solve the problems of small application range and poor recovery ability, and achieve improved physical properties, reduced sensitivity, and increased adhesion effect of ability

Active Publication Date: 2010-08-18
CCCCRUITONG ROAD & BRIDGE MAINTENANCE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-rutting additive for asphalt mixture and its preparation and use method, to overcome the problems of poor recovery abili

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1:

[0019] Taking the production of 100kg of the present invention as an example, the raw materials used are:

[0020] Polyethylene 50kg, polypropylene 20kg, PVC 15kg, rubber 3kg, asphalt 7kg, toughening agent 3kg, UV anti-aging agent 2kg;

[0021] The above raw materials are mixed together and stirred evenly, put into a screw extruder, heated to 120°C-160°C and melted to make a uniform material, then extruded into strips, cooled and cut into pellets.

[0022] When using: When the asphalt mixture is heated to 170-180°C, the above granular product is directly put into the mixing pot containing the asphalt mixture for dry mixing. The dry mixing time is 5 to 10 seconds, and then the hot asphalt is added to continue. Stir, the wet mixing time is 45 to 50 seconds.

Example Embodiment

[0023] Example 2:

[0024] Taking the production of 100kg of the present invention as an example, the raw materials used are:

[0025] Polyethylene 35.5kg, polypropylene 23.5kg, PVC 24kg, rubber 1.5kg, asphalt 10kg, toughening agent 2.5kg, UV anti-aging agent 3kg;

[0026] The above raw materials are mixed together and stirred evenly, put into a screw extruder, heated to 130°C-170°C and melted to make a uniform material, then extruded into strips, cooled and cut into pellets.

[0027] When using: When the asphalt mixture is heated to 170-180°C, the above granular product is directly put into the mixing pot containing the asphalt mixture for dry mixing. The dry mixing time is 5 to 10 seconds, and then the hot asphalt is added to continue. Stir, the wet mixing time is 45 to 50 seconds.

Example Embodiment

[0028] Example 3:

[0029] Taking the production of 100kg of the present invention as an example, the raw materials used are:

[0030] Polyethylene 28kg, polypropylene 33kg, PVC 21kg, rubber 5kg, asphalt 6kg, toughening agent 4kg, UV anti-aging agent 3kg;

[0031] The above raw materials are mixed together and stirred evenly, put into a screw extruder, heated to 110°C-150°C and melted to make a uniform material, then extruded into strips, cooled and cut into pellets.

[0032] When using: When the asphalt mixture is heated to 170-180°C, the above granular product is directly put into the mixing pot containing the asphalt mixture for dry mixing. The dry mixing time is 5 to 10 seconds, and then the hot asphalt is added to continue. Stir, the wet mixing time is 45 to 50 seconds.

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PUM

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Abstract

The invention relates to an asphalt mixture anti-rutting additive and a preparation and use method thereof. The anti-rutting additive which is in common use at present has insufficient toughness and poor deformation recovery capability under the condition of heavy load, or has poor adaptability and small application range because the existing anti-rutting additive needs to take chemical reaction with the asphalt. The invention provides the asphalt mixture anti-rutting additive, which is prepared from the following ingredients in weight parts: 25 to 75 percent of polyethylene, 5 to 35 percent of polypropylene, 5 to 25 percent of PVC, 3 to 5 percent of rubber, 5 to 10 percent of asphalt, 1 to 5 percent of tougheners and 1 to 3 percent of UV ageing resistant agents. The ingredients are mixed and uniformly stirred according to the ingredient mixture ratio, and are put into a screw extruder to be heated into 110 to 180 DEG C, the materials are extruded into granules after being fused and prepared into uniform substances, and the asphalt mixture anti-rutting additive can be directly mixed with the asphalt mixture in a dry mode when in use. The additive of the invention has the advantages of low asphalt cost and stable structure, the wear resistance and pressure resistance performance is improved by 15 to 30 percent, the elasticity recover performance index of the asphalt is improved by 10 to 25 percent, and the time limitation of the road surface antifatigue performance is prolonged by 10 to 25 percent.

Description

Technical field: [0001] The invention relates to the technical field of asphalt mixture modifiers compounded by multiple polymers, in particular to an asphalt mixture anti-rutting additive and a method for preparing and using the same. Background technique: [0002] At present, due to the channelized traffic characteristics of expressways and the long longitudinal slope of expressways in mountainous areas in my country, the degree of rutting damage to expressway pavement is extremely serious. [0003] At present, there are two kinds of anti-rutting additives commonly used. One is mixed with various commonly used asphalt mixtures and then paved on the road surface. Although it can increase the crack resistance of asphalt concrete to a certain extent, it can be used under heavy loads. Under these conditions, the toughness is obviously insufficient, and the deformation recovery ability is poor; the second is to obtain modified asphalt by chemical reaction with asphalt and pave ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L27/06C08L95/00
Inventor 李刚陈团结雷宇陈实白雪梅赵明李智
Owner CCCCRUITONG ROAD & BRIDGE MAINTENANCE TECH
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