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Mixture of special-shaped section hollow polymer fiber and modified asphalt mastic macadam

A technology for asphalt horseshoe grease and asphalt mixture, applied in the field of asphalt mixture, can solve the problems of poor durability of SMA and poor oil absorption of common polymer fibers, and achieve the effect of simple and easy implementation, good workability, and easy construction.

Inactive Publication Date: 2007-02-07
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved in the present invention is to overcome the shortcoming of the poor durability of the SMA formulated with common polymer fibers due to the poor oil absorption of common polymer fibers

Method used

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  • Mixture of special-shaped section hollow polymer fiber and modified asphalt mastic macadam
  • Mixture of special-shaped section hollow polymer fiber and modified asphalt mastic macadam
  • Mixture of special-shaped section hollow polymer fiber and modified asphalt mastic macadam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Aggregate: basalt, all properties comply with the "Technical Specifications for Construction of Highway Modified Asphalt Pavement" (JTG F40-2004). Filler: Limestone slag powder, all properties comply with the "Technical Specifications for Construction of Highway Modified Asphalt Pavement" (JTG F40-2004). The mineral material gradation composed of aggregate and filler is shown in Table 2:

[0025] Sieve hole(mm)

9.5

4.75

2.36

1.18

0.6

0.30

0.075

Passing rate(%)

100

95.2

28

22

18

15

12

[0026] Asphalt: SBS polymer modified asphalt, PG76-22, asphalt ratio 6.0%;

[0027] Fiber: for figure 1 The shown porous polyester fiber with quincunx cross-section is 0.4% of the total mass of the mixture.

[0028] Preparation method: prepare the asphalt mixture according to the preparation steps described in the summary of the invention.

[0029] Experimental procedure: Accord...

Embodiment 2

[0031] Change the quincunx cross-section porous polyester fiber in embodiment 1 into figure 2 The preparation method and experimental steps of the single-hole polyester fiber with cross-section shown are the same as in Example 1. The test results are shown in Table 3.

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Abstract

The invention discloses a shaped hollow fiber polymer modified asphalt mastic detritus admixture. The admixture consists of shaped single-hole or porous polymer fibers and asphalt mastic detritus, wherein the content of the shaped single-hole or porous polymer fiber is 0.1% to 0.5% of the total weight. The polymeric fibers can be polyester fibers, polyacrylonitrile fibers, polyamide fibers, or these hybrid fibers. 'Shaped' refers to a fiber cross-section being any rule or irregular geometry, such as cruciform, trefoil, well font, star, and cinquefoil. 'Hollow' means that this fiber is not solid but has one or more holes along the axis. The admixture has good crack resistance, durability, workability, facilitated construction without investment in new equipment.

Description

Technical field: [0001] The invention relates to an asphalt mixture, in particular to a modified asphalt horseshoe grease mixed with fiber. Background technique: [0002] Highway transportation is an essential infrastructure for the rapid development of contemporary economy and society, and its performance and quality often have a close impact on social life. Traffic accidents and frequent repairs caused by poor road performance often cause traffic jams and hinder economic and social development. Therefore, it is necessary to continuously improve the performance of highway pavement materials and promote the use of new materials. [0003] Dense-graded asphalt mixture is one of the main pavement materials used in modern high-grade roads. It has good mechanical properties, low-temperature crack resistance and certain roughness. Excellent sound-absorbing effect, convenient construction and renewable utilization. However, this kind of asphalt mixture has the disadvantage of po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B16/06C04B24/36
Inventor 王依民倪建华黄绍龙汤惠工何唯平
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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