High-strength emulsified asphalt cold recycled mixture

A technology for cold recycling mixture and emulsified asphalt, which is applied in the field of high-strength emulsified asphalt cold recycling mixture, can solve the problems of low cold recycling strength of emulsified asphalt, and achieves the effect of being beneficial to popularization and application, enhancing final strength and obtaining low cost.

Inactive Publication Date: 2018-11-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problem of low cold recycling strength of emulsified asphalt existing in the prior art, the present invention provides a high-strength emu

Method used

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  • High-strength emulsified asphalt cold recycled mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 19.7 parts of new aggregate, 74.3 parts of old aggregate, 4 parts of mineral powder, 2 parts of cement, and 3.75 parts of emulsified asphalt, with the amount of water added as a variable factor (2.0 parts, 3.0 parts, 4.0 parts, 5.0 parts, 6.0 parts), make test pieces respectively, test the Marshall test piece, and it calculates that the optimum external water content is 5 parts.

[0024] Weighing 19.7 parts of new aggregate, 74.3 parts of old aggregate, 4 parts of mineral powder, 2 parts of cement, and 6.295 parts of total water consumption, the addition of emulsified asphalt as a variable factor (2.5 parts, 3.5 parts , 4.0 parts, 4.5 parts, 5.0 parts), Marshall test pieces were made respectively, and the measured porosity and splitting strength are shown in Table 1. It calculates that the optimum amount of emulsified asphalt is 3.75 parts.

Embodiment 2

[0026] Weigh 19.7 parts of new aggregate, 74.3 parts of old aggregate, 4 parts of mineral powder, 2 parts of cement, 3.75 parts of emulsified asphalt, wetting agent (add 1 / 4 to water, add 3 / 4 to emulsified asphalt), among them, wetting The mass of wet agent is 0.5% of the total water. With the amount of water added as a variable factor (2.0 parts, 3.0 parts, 4.0 parts, 5.0 parts), standard Marshall test pieces were made respectively, and the porosity and splitting strength were measured respectively, as shown in Table 1.

Embodiment 3

[0028] Weigh 19.7 parts of new aggregate, 74.3 parts of old aggregate, 4 parts of mineral powder, 2 parts of cement, 3.75 parts of emulsified asphalt, and a water reducing agent, wherein the weight of the water reducing agent is 2% of the weight of the cement. With the amount of water added as a variable factor (2.0 parts, 3.0 parts, 4.0 parts, 5.0 parts), standard Marshall test pieces were made respectively, and the measured porosity and splitting strength are shown in Table 1.

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Abstract

The invention belongs to the field of design for highways and urban roads and provides a high-strength emulsified asphalt cold recycled mixture. The mixture is prepared from following components by mass through weighing: 0-50 parts of new aggregates, 50-100 parts of old aggregates, 0-10 parts of filler, 0-5 parts of cement, 0-10 parts of filler, 2-8 parts of emulsified asphalt, 2-6 parts of waterand a surfactant. Compared with the prior art, a surface active material in a proper proportion is added to increase adhesive property and reduce porosity, and final strength of the high-strength emulsified asphalt cold recycled mixture is improved; a water reducing agent reduces water consumption, a wetting agent wets the emulsified asphalt, so that the wrapping effect of the aggregates becomes better, the utilization rate of the old asphalt mixture is increased while the performance of the emulsified asphalt cold recycled mixture is improved, and green development of roads is realized.

Description

[0001] technical essentials [0002] The invention belongs to the field of highway and urban road design, in particular to a high-strength emulsified asphalt cold recycled mixture. Background technique [0003] With the continuous development of highway construction, the formation of highways, national and provincial trunk line networks, and the continuous laying of new highways, more and more attention has been paid to highway maintenance technology and maintenance management. Actively promoting cold recycling technology of emulsified asphalt and adopting economical and effective regeneration maintenance methods according to local conditions have become urgent requirements of highway maintenance management departments. The cold recycling of emulsified asphalt has outstanding advantages such as making full use of old road waste materials, saving resources, reducing costs, benefiting environmental protection, and shortening the construction period. Therefore, the technology of ...

Claims

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Application Information

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IPC IPC(8): C04B28/08
CPCC04B28/08C04B2111/00017C04B2111/0075C04B2201/50C04B7/02C04B7/12C04B7/28C04B14/14C04B18/16C04B18/141C04B24/36C04B24/20C04B24/16C04B24/00C04B24/42
Inventor 欧阳剑韩宝国杨文婷
Owner DALIAN UNIV OF TECH
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