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A kind of asphalt mixture performance enhancer and preparation method thereof

A technology of asphalt mixture and reinforcing agent, which is used in building insulation materials, building components, buildings, etc., can solve the problems of poor low-temperature crack resistance and low water stability, and achieve strong rutting resistance and water damage resistance. , Stable and durable effect of water damage resistance

Active Publication Date: 2018-11-13
CHENGDU TELUDA TRANSPORTATION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low water stability and poor low-temperature crack resistance in existing asphalt mixture performance enhancers, and proposes a kind of fine and uniform rock asphalt particles (asphalt content ≥ 15%, particle size ≤5mm) and external admixture as an asphalt mixture performance enhancer, the mixture performance enhancer is easy to melt and distribute in the asphalt mixture, and can fully exert the performance improvement effect on the asphalt mixture, while maintaining high temperature stability At the same time, it also has better water stability and low temperature crack resistance

Method used

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  • A kind of asphalt mixture performance enhancer and preparation method thereof
  • A kind of asphalt mixture performance enhancer and preparation method thereof
  • A kind of asphalt mixture performance enhancer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Asphalt mixture performance enhancer 1: composed of 91wt% rock asphalt, 8wt% linear low density polyethylene and 1wt% fumaric anhydride. Among them, in rock asphalt, the quality of bitumen accounts for 15% of the total mass of rock asphalt, and the softening point is 85°C.

[0027] The specific preparation steps are as follows: crush rock asphalt whose asphalt mass accounts for 15% of the total mass of rock asphalt into particles, and the particle size is 3.53mm; The low-density polyethylene and fumaric anhydride particles are mixed according to the mass ratio of rock asphalt: linear low-density polyethylene: fumaric anhydride = 91:8:1, and the asphalt mixture performance enhancer is obtained.

Embodiment 2

[0029] Comparative Test:

[0030] Asphalt mixture performance enhancer 0: composed of 80wt% rock asphalt and 20wt% linear low-density polyethylene. Among them, in rock asphalt, the quality of bitumen accounts for 25% of the total mass of rock asphalt, and the softening point is 85°C.

[0031] Asphalt Mixture Performance Enhancer 2:

[0032] Composed of 91 wt% rock asphalt, 8 wt% linear low density polyethylene and 1 wt% non-linear low density polyethylene. Among them, in rock asphalt, the quality of bitumen accounts for 25% of the total mass of rock asphalt, and the softening point is 75°C.

[0033]The specific preparation steps are as follows: crush rock asphalt whose asphalt mass accounts for 25% of the total mass of rock asphalt into granules with a particle size of 2.82mm, then dry until the water content accounts for 1.25% of the total mass, and then linearly mix it with a particle size of 5mm The low-density polyethylene and the non-linear low-density polyethylene par...

Embodiment 3

[0054] Asphalt mixture performance enhancer 3: composed of 91 wt% rock asphalt, 8 wt% ground carbon fiber and 1 wt% maleic anhydride. Among them, in rock asphalt, the quality of bitumen accounts for 30% of the total mass of rock asphalt, and the softening point is 75°C.

[0055] The specific preparation steps are as follows: crush rock asphalt whose asphalt mass accounts for 30% of the total mass of rock asphalt into particles with a particle size of 0.93mm, then dry until the water content accounts for 1.74% of the total mass, and then mix with carbon fiber with a particle size of 2mm Mix well with maleic anhydride particles at a mass ratio of 91:8:1 to obtain an asphalt mixture performance enhancer.

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Abstract

The invention relates to an asphalt mixing material performance enhancing agent and a preparation method thereof, and belongs to the technical field of road materials. The asphalt mixing material performance enhancing agent is composed of rock asphalt and an extra additive. The mass ratio of the rock asphalt to the extra additive is larger than 9:1. The invention further provides the preparation method of the asphalt mixing material performance enhancing agent. The asphalt mixing material performance enhancing agent can be easily molten and distributed into an asphalt mixing material, the efficacy of improving performance of the asphalt mixing material can be brought into full play, the high-temperature stable performance is kept, and meanwhile the better water stability and low-temperature anti-cracking performance are achieved.

Description

technical field [0001] The invention relates to an asphalt mixture performance enhancer and a preparation method thereof, in particular to an asphalt mixture performance enhancer prepared by mixing rock asphalt and an external admixture and a preparation method thereof, belonging to the technical field of road materials. Background technique [0002] The deposit of asphalt is due to the movement and fracture of the earth's crust, which makes the crude oil stored in the depths of the earth's crust continuously flow to the surface. Asphalt-like substances formed by oxidative polymerization under the combined action of microorganisms and moisture. [0003] Due to long-term existence in nature and withstood the test of harsh natural environment, rock asphalt has extremely stable properties and outstanding aging resistance. Rock asphalt is natural asphalt, usually not used directly, but mixed and blended with base asphalt and aggregates as a modified material to improve the road...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L23/08C08L23/06C08L11/00C08L9/06C08L1/02C08L29/14C08K5/1539C08K7/06C04B24/36
CPCC04B40/0039C08K5/1539C08K7/06C08L95/00C08L2201/08C08L2205/03C08L2207/066C08L23/0815C08L23/06C08L11/00C08L9/06C08L1/02C08L29/14C04B24/36C04B24/2611C04B24/04C04B26/26
Inventor 朱景彬刘星呈
Owner CHENGDU TELUDA TRANSPORTATION EQUIP CO LTD
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