Curing cold patch material suitable for low-temperature humid environment and preparation method thereof

A wet environment, cold patching technology, applied in the field of emergency maintenance and road maintenance, can solve the problem of lack of research and development of cold patching materials, and achieve the effect of improving road safety, high cohesion, and avoiding secondary repairs.

Pending Publication Date: 2021-12-31
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In short, most of the current research on cold-patch asphalt mixtures is about the repair of asphalt pavement potholes in normal temperature and less rainy environments, and there is still a lack of research on cold-patch materials for low-temperature and humid environments.

Method used

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  • Curing cold patch material suitable for low-temperature humid environment and preparation method thereof
  • Curing cold patch material suitable for low-temperature humid environment and preparation method thereof
  • Curing cold patch material suitable for low-temperature humid environment and preparation method thereof

Examples

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Effect test

preparation example Construction

[0048] Wherein the preparation method of cold patch asphalt is:

[0049] (1) The modified asphalt was heated to 180°C, and the soap solution was slowly injected, and the composite modified emulsified asphalt was prepared by high-speed shearing at a speed of 4500r / min for 15min.

[0050] (2) Add low-temperature curing epoxy glue into the composite modified emulsified asphalt in proportion, and mix evenly at room temperature to obtain cold patched asphalt.

Embodiment 4

[0051] Embodiment 4 different cold patch performance tests:

[0052] In order to reflect the cohesion of the cold patch in the presence of humidity, the present invention will design the following test to evaluate the initial stability and durability of a solidified cold patch suitable for low temperature and humid environments.

[0053] (1) Fort Kentucky Scatter Test

[0054] The prepared cold patch material was stirred at room temperature and compacted to form (50 times / surface) Marshall specimens. Each cold patch material was formed into 4 specimens. They were cured at 5°C for 24 hours, and then kept at 5°C. Carry out Kentaburg fly-away test in the box. The initial anti-scattering ability of each cold patch material figure 1 , the results show that: within a certain range, the more the asphalt content is, the less the RAP material content is, the better the bonding performance of the cold patch material is, and the better it can adapt to the low temperature and humid envi...

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Abstract

The invention relates to a curing cold patch material suitable for a low-temperature humid environment and a preparation method of the curing cold patch material. The cold patch material comprises the following components in parts by weight: 64-78 parts of an RAP material, 16-31 parts of a novel aggregate, 0.9-1.1 parts of a regenerant and 3-5 parts of cold patch asphalt. Wherein the cold patch asphalt comprises the following components in parts by weight: 45-56 parts of modified asphalt, 28 parts of liquid soap and 20-26 parts of low-temperature curing epoxy glue (latent epoxy resin). The preparation method comprises the following steps: slowly adding the regenerant into the preheated RAP material at a constant speed, uniformly mixing the components, adding the cold patch asphalt and the preheated new aggregate, uniformly mixing the components, and discharging the mixture when the temperature is less than or equal to 80 DEG C. Compared with the prior art, the cold patch material disclosed by the invention has the advantage of being rapidly combined with a damaged pavement in a low-temperature humid environment, and has a wide prospect when being applied to the fields of road maintenance and emergency maintenance.

Description

Technical field: [0001] The invention belongs to the field of road maintenance and emergency maintenance, and specifically relates to a curing cold patch suitable for low-temperature and humid environments such as rainy and snowy seasons and a preparation method thereof. The cold patch has the advantages of low-temperature fast curing and high water resistance, and can be Construction under wet conditions has broad prospects for road repairs in rainy and snowy seasons. Background technique: [0002] As a relatively important part of the work, road repair is often carried out in seasons with fine weather and suitable temperature. On the one hand, it is because the performance of the common asphalt pavement repair materials is difficult to fully exert in a humid environment, and on the other hand, it is limited by technical reasons. , my country's research on asphalt pavement repair is mainly concentrated in mild climate areas. In this way, for some alpine areas in my country ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B111/72C04B111/20
CPCC04B26/26C04B2111/0075C04B2111/72C04B2111/20C04B18/16C04B14/28C04B14/14C04B24/00C04B24/281
Inventor 陈先华阳静瑶徐刚孔佩佩张璠杨军
Owner SOUTHEAST UNIV
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