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Temperature-adjusted and modified recycled ascon composition for reusing 100% of waste ascon for road pavement, and method for manufacturing same

A technology of recycled asphalt and manufacturing method, applied in the direction of solid waste management, sustainable waste treatment, on-site coagulation pavement, etc., can solve the problems of greenhouse gas, wasted energy, oxygen aging, etc. The effect of construction temperature, reducing oxygen aging and improving the quality of waste asphalt

Inactive Publication Date: 2012-05-09
许政道
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned invention also has a series of problems, the problem of material supply when the waste asphalt concrete is insufficient, the solution to the high temperature of production, that is, the problem of oxygen aging caused by high temperature heating, the problem of occurrence of greenhouse gas and waste of energy, etc.

Method used

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  • Temperature-adjusted and modified recycled ascon composition for reusing 100% of waste ascon for road pavement, and method for manufacturing same
  • Temperature-adjusted and modified recycled ascon composition for reusing 100% of waste ascon for road pavement, and method for manufacturing same
  • Temperature-adjusted and modified recycled ascon composition for reusing 100% of waste ascon for road pavement, and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Put 5 parts by weight of SBS, 4 parts by weight of EVA, 1 part by weight of stearic acid, 0.1 part by weight of pyrrole, and 3 parts by weight of microcrystalline wax into the mixer, and mix for about 30 minutes at 135 degrees Celsius to produce uniform fine particles Form plasticizing medium temperature regeneration modifier. Put 98.8 parts by weight of densely graded circulating waste asphalt concrete aggregates crushed into a maximum particle size of 19 mm and 1.2 parts by weight of the medium-temperature regeneration modifier particles produced above into a furnace at 135 degrees Celsius for 30 minutes for heating. Put the heated mixture into a mixer at 135 degrees Celsius and mix for 3 minutes to produce the medium temperature modified recycled asphalt mixture of the present invention.

[0044] In order to grasp the quality characteristics of the medium-temperature modified recycled asphalt concrete mixture thus produced, the following tests were carried out. In a...

Embodiment 2

[0056] 100 parts by weight of waste asphalt concrete with a maximum particle size of 19mm and any gradation, 3 parts by weight of clay as a regeneration modifier, 1 part by weight of cement, and 0.2 parts by weight of P-phenylenediamine were put into a mixer at room temperature. , 8 parts by weight of latex solution containing 69% solid powder as a temperature-regulating additive, making it evenly mixed to make the normal temperature modified recycled asphalt mixture according to the present invention. According to the test method described in Example 1, test pieces were manufactured at room temperature from the mixture, and their physical properties were measured after hardening at room temperature for one day. The results are shown in Table 2.

[0057] 【Table 2】

[0058]

[0059] In the case of normal temperature mixing in Example 2, compared with the case of medium temperature mixing Example 1, the physical properties are slightly lowered, but the physical properties of ...

Embodiment 3

[0061] First, melt 100 parts by weight of waste asphalt concrete with a maximum particle size of 19mm and any gradation, and then let a mixer such as 90, and add 4 parts by weight of clay, 1 part by weight of cement and 0.1 part by weight of pyridine as regeneration modifiers , 4 parts by weight of ammonium bicarbonate as a temperature-regulating additive and mixed for about 3 minutes. Bubbles were generated during mixing and an increase in the volume of the bitumen was observed.

[0062] As described above, the modified medium temperature recycled asphalt mixture according to the present invention was produced. According to the test method described in Example 1, test pieces were made respectively in the half-medium temperature (90°C) and hardened, then their physical properties were measured, and the measurement results were shown in Table 3.

[0063] 【table 3】

[0064]

[0065]It can be seen that the semi-medium temperature mixture in Example 3 is better than the norma...

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Abstract

Provided is a temperature-adjusted and modified recycled ASCON composition for reusing 100% of waste ASCON for road pavement, and a method for manufacturing same, wherein the composition is used in asphalt pavement as a material for the wearing course, surface course, binder course, and base course, and the method comprises: feeding 100 wt % of waste ASCON aggregate having up to a 53 mm particle size distribution into a mixer via a feeding inlet for new aggregate; adding 0.1 to 20 wt % of a recycling modifier and 0.1 to 20 wt % of a temperature-adjusting additive to the waste ASCON via the feeding via the inlet for new aggregate; and homogeneously mixing said materials at 5 to 180 DEG C for 0.5 to 3 minutes. The recycling modifier improves the physical properties of recycled ASCON, while the temperature-adjusting additive adjusts the temperatures for producing and constructing recycled ASCON. The present invention may provide economic, social and technological conveniences by improving the overall recycling technology of waste ASCON. The conveniences may be achieved by virtue of: cost-saving in production by using only waste ASCON without any new materials; saving waste disposal costs; preventing the destruction of nature to obtain aggregate; reducing the consumption of new asphalt; preventing environmental pollution through the reuse of waste products; preventing the early occurrence of plastic deformation and fatigue cracks due to improving the quality of the recycling modifier; economic benefits from the prolonged lifespan of road pavement; the possibility of being used as a material for the wearing course and surface course of major roadways; saving energy in the production and construction of recycled ASCON by adding the temperature-adjusting additive; and reducing greenhouse gas emissions.

Description

technical field [0001] Generally speaking, asphalt concrete is made by heating and mixing asphalt binder, coarse aggregate, fine aggregate and filler at high temperature (160-180°C), and is widely used in the pavement construction of various roads, airport runways and parking lots . During the use of this kind of asphalt pavement, the asphalt binder on the pavement surface slowly reacts with the oxygen in the air, gradually loses its original softness and gradually hardens. This phenomenon is called oxidative aging of asphalt pavement. With the increase of the service time of the pavement, the oxidative aging proceeds for a long time, severe cracks occur on the pavement surface, and finally, the pavement life ends. [0002] When the asphalt pavement has serious problems in use (plastic deformation or fatigue cracks, etc.), when the pavement is maintained and repaired, or when the asphalt pavement of the road is expanded, or excavated for the purpose of burying sewer pipes, wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/16E01C7/26C04B24/08C04B26/26
CPCC04B26/26E01C19/1004C04B2111/0075Y02A30/30Y02W30/91C04B7/02C04B14/047C04B14/06C04B14/104C04B14/20C04B14/28C04B18/08C04B18/141C04B22/064C04B22/143
Inventor 许政道
Owner 许政道
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