Micro-surfacing emulsified asphalt suitable for low-temperature construction at night as well as preparation method and application thereof

An emulsified asphalt and micro-surface technology, which is applied in building thermal insulation materials, building components, buildings, etc., can solve the problems of slow demulsification, long curing time, and low temperature at night at the micro-surface, so as to improve anti-skid and anti-skid. The effect of water seepage performance, shortened construction period and high early strength

Inactive Publication Date: 2020-10-30
BEIJING SHOUFA HIGHWAY MAINTENANCE & CONSTR +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, the present invention is especially suitable for road construction at night, and effectively solves the problem of slow demulsification at the micro-surface caused by low night temperature and high humidity, long maintenance time, and difficulty in night construction of highways in Beijing. Technical problems, and the road surface has good anti-seepage ability, wear resistance and anti-skid ability, and the driving performance is good, which can greatly improve its service life

Method used

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  • Micro-surfacing emulsified asphalt suitable for low-temperature construction at night as well as preparation method and application thereof
  • Micro-surfacing emulsified asphalt suitable for low-temperature construction at night as well as preparation method and application thereof
  • Micro-surfacing emulsified asphalt suitable for low-temperature construction at night as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A preparation method for micro-surface emulsified asphalt suitable for nighttime low-temperature construction conditions. The mass components of each raw material are: 50 parts of petroleum asphalt, 1 part of emulsifier, 40 parts of water, 2 parts of warm mixing agent, and 2 parts of modified latex parts, 3 parts of additives. A kind of micro-surfacing mixture for paving, the specific implementation process comprises the following steps:

[0049] (1) Heat the 90# petroleum asphalt to 160°C, add Cecabase RT surfactant-type warm mix agent, and mix and stir for 3 minutes;

[0050] (2) Add MQK-3 cationic emulsifier into water to prepare an aqueous solution, then add SBR modified latex, then heat the prepared soap to 65°C, and finally adjust the pH of the soap to 2.5 with acid;

[0051] (3) Quickly pour the soap liquid into the colloid mill of the emulsifier for shearing, and then pour the hot-melt asphalt and rock asphalt additives stirred in step (1) into the shearing soa...

Embodiment 2

[0060] A kind of micro-surface emulsified asphalt suitable for low-temperature construction at night. The mass components of each raw material are: 52 parts of petroleum asphalt, 2 parts of emulsifier, 35 parts of water, 4 parts of warm mixing agent, 3 parts of modified latex, Additive 2 parts.

[0061] The specific implementation process is basically the same as that of Example 1, the difference is that the quality components of each raw material are slightly different, and in step 4, 2 parts of inorganic filler, 10 parts of emulsified asphalt and 95 parts by weight of aggregate are mixed and stirred.

[0062] In order to verify the effect of this patent, the low-temperature micro-surfacing mixed material in the proportion of Example 2 was used for actual paving, and the test was carried out according to E20 of the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering". The test results are shown in Table 2:

[0063] Table 2 Performance test indicators of ...

Embodiment 3

[0067] A micro-surfacing emulsified asphalt suitable for low-temperature construction at night. The mass components of each raw material are: 50 parts of petroleum asphalt, 5 parts of emulsifier, 40 parts of water, and 5 parts of modified latex.

[0068] The specific implementation process is basically the same as in Example 1, the difference being that the amount of emulsifier and modified latex added is slightly different, no warm mixing agent is added in the step (1), and no inorganic filler is added in the step (4).

[0069] In order to verify the effect of this patent, the low-temperature micro-surfacing mixture in the proportion of Example 3 was used for actual paving, and the test was carried out according to E20 of the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering". The test results are shown in Table 3:

[0070] Table 3 Performance test index of mixture at low temperature microsurfacing

[0071] Test items results of testing ...

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Abstract

The invention provides micro-surfacing emulsified asphalt suitable for low-temperature construction at night as well as a preparation method and application thereof. The micro-surfacing emulsified asphalt suitable for low-temperature construction at night is prepared from the following raw materials in parts by weight: 50-65 parts of petroleum asphalt, 0.5-10 parts of an emulsifier, 2-6 parts of awarm mixing agent, 35-50 parts of water, 2-10 parts of modified latex and 2-10 parts of an additive. The emulsified asphalt and the mixture prepared by the invention are especially suitable for roadnight construction application, the technical problems that the micro-surfacing demulsification speed is low and the maintenance time is long due to low temperature and high humidity at night and it is difficult to adapt to night construction of expressways in Beijing areas are effectively solved, the pavement has good water seepage resistance, wear resistance and skid resistance, the driving useperformance is good, and the service life of the pavement can be prolonged to a great extent.

Description

technical field [0001] The invention belongs to the technical field of road maintenance, and in particular relates to a micro-surface emulsified asphalt suitable for low-temperature construction at night, a preparation method and application thereof. Background technique [0002] At present, most of the highways in our country have entered the maintenance period one after another. Due to the increasing traffic volume of heavy vehicles and the heavy driving load pressure, many road surfaces are obviously insufficient in anti-skid performance, the road surface is severely worn, and the anti-skid performance of the road surface is insufficient. Micro-surfacing is an economical, fast and efficient road maintenance technology, which has many advantages such as waterproof, anti-slip, wear-resistant, improving the integrity and aesthetics of the road surface. At present, it is widely used in the field of road maintenance at home and abroad, especially for vehicles The application e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L9/08C08J3/03C04B26/26C04B111/72
CPCC04B26/26C04B2111/0075C04B2111/72C08J3/03C08J2395/00C08J2409/08C08J2495/00C04B14/14C04B14/28C04B7/00C04B24/26C04B2103/0068C04B2103/40
Inventor 陈涛高玉梅王世昌杨婉怡商德望徐世法李俊忠傅庆志许鹰杨扬李振苑广友
Owner BEIJING SHOUFA HIGHWAY MAINTENANCE & CONSTR
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