Durable emulsified asphalt mixture prepared from waste tire rubber powder and preparation method

A technology of emulsifying asphalt and waste tire rubber, which is applied in the field of asphalt mixture and its preparation, to reduce rutting, prolong service life and benefit the environment

Inactive Publication Date: 2020-12-04
郑州市路通公路建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technical solution disclosed in this patent document does not involve the addition of tire rubber powder, and relies on the mixture to improve durability and wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0039] The percentages of various substances involved in the examples refer to mass percentages unless otherwise specified.

[0040] The determination of void ratio is calculated according to the formula described in "Test Regulations for Asphalt Asphalt Mixtures in Highway Engineering" JTG E20-2011" (T0705-4).

[0041] The determination of dynamic stability is tested according to the test standard of "Test Regulations for Asphalt Asphalt Mixtures in Highway Engineering" JTG E20-2011 (T0719-2011).

[0042] The determination of the freeze-thaw splitting strength ratio is carried out in accordance with the test standard JTG E20-2011 (T0729-2000) of "Test Regulations for Bituminous Asphalt Mixtures in Highway Engineering".

[0043] The compressive strength is tested by a computer-controlled electronic universal testing machine model CMT5305 at a loading speed of 50mm / min±5mm / min.

[0044] The preparation method of the durable emulsified asphalt mixture of embodiment 1-5 comprise...

Embodiment 1

[0055] The preparation method of the durable type emulsified asphalt mixture of the present embodiment comprises the following steps:

[0056] Step S1: Weigh 5kg of aggregate (supplier, Shanghai Road and Bridge Group) according to the proportioning ratio. The gradation of the aggregate is selected as follows: the aggregate with a particle size of 0-3mm is limestone, its mass percentage is 16%, and the particle size is 5mm. Basalt is used for aggregates with a particle size of ~10mm, and its mass percentage is 52%. Basalt is used for aggregates with a particle size of 10-15mm, and its mass percentage is 32%. Pour it into the asphalt mixer, start the machine of the asphalt mixer, and mix 60s;

[0057] Step S2: Then add 60g of water to the aggregate obtained in step S1, start the machine of the asphalt mixer, and mix evenly;

[0058] Step S3: take 400g of water-based epoxy emulsified asphalt (supplier, Shanghai Jiayin Industrial Co., Ltd., product name: epoxy resin / vinyl copolym...

Embodiment 2

[0061] The preparation method of the durable type emulsified asphalt mixture of the present embodiment comprises the following steps:

[0062] Step S1: Weigh 5kg of aggregates according to the proportioning ratio. The gradation of the aggregates is selected as follows: aggregates with a particle size of 0-3mm use limestone with a mass percentage of 15%, and aggregates with a particle size of 5-10mm use basalt. The mass percentage is 51%, and the aggregate with a particle size of 10-15mm is basalt, and the mass percentage is 34%. Pour it into the asphalt mixer, start the machine, and stir for 70s;

[0063] Step S2: Then add 60g of water to the aggregate obtained in step S1, start the machine, and stir evenly;

[0064] Step S3: Take 420g of water-based epoxy emulsified asphalt and 14.28g of diethylenetriamine curing agent, stir them evenly and add them to the aggregate obtained in step S2;

[0065] Step S4: Start the asphalt mixer, stir for 70 seconds, and continue to add 50 gr...

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Abstract

The invention discloses a durable emulsified asphalt mixture prepared from waste tire rubber powder. The durable emulsified asphalt mixture is prepared from epoxy resin modified emulsified asphalt, aggregate, a curing agent and tire rubber powder, wherein the epoxy resin modified emulsified asphalt accounts for 8-10% of the aggregate in percentage by mass; the curing agent accounts for 3-4% of themass of the epoxy resin modified emulsified asphalt; and the tire rubber powder is obtained by shearing and crushing waste tires, and the mass of the tire rubber powder accounts for 1-3% of the massof the aggregate. According to the durable emulsified asphalt mixture, the tire rubber powder is added, so that the durability and the wear resistance of a pavement can be kept for a long time, the service life of the pavement is greatly prolonged, and meanwhile, reutilization of rubber resources and environmental protection are facilitated.

Description

technical field [0001] The invention relates to an asphalt mixture and a preparation method thereof, in particular to the preparation of an asphalt mixture which is durable, has high wear resistance, and has environmental protection functions. Background technique [0002] With the development of the transportation industry, heavy loads and overloads have increased sharply, and road cracks and rutting problems have emerged one after another, which puts forward higher requirements for the shear performance of asphalt pavement. In order to delay the occurrence of cracks, rutting and other diseases on the asphalt pavement, and prolong the service life of the asphalt pavement. Epoxy resin can significantly increase the strength of asphalt, thereby improving the rutting resistance of the mixture. [0003] Since now, in the production of asphalt mixture, hot mix asphalt mixture is still the main method in all parts of the world. The process of heating asphalt to lay roads, repair...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B111/20
CPCC04B26/26C04B2111/0075C04B2111/20C04B2111/00017
Inventor 郭孟涛李子云李运富马国强张宏伟严云飞李虎马博吴迪马志峰赵悠悠蒋云鹏张乔熊坤班中阳
Owner 郑州市路通公路建设有限公司
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