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Use of fly ash synthesized channel joint impervious material for preparing highway asphalt mixture

A technology of asphalt mixture and anti-seepage material, which is applied in the field of known materials, can solve the problems of dry and hard cracking durability of the road surface, hinder the health of operators, reduce the service life and other problems, achieve the improvement of fatigue life, good effect, and reduce Economic cost effect

Inactive Publication Date: 2013-02-06
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary asphalt has disadvantages such as low softening point, high penetration, and strong temperature sensitivity. If ordinary asphalt is used to pave high-grade pavement, there will be problems such as soft pavement in summer and poor durability such as dry and cracked pavement in winter.
At present, most of the asphalt materials for building high-grade roads in China are mostly SBS modified asphalt, and the performance has been improved, but it needs to be blended and used at a higher temperature, resulting in serious aging of the asphalt and reducing the service life.
Due to the high temperature and long operation time, asphalt releases toxic gas, pollutes the environment and affects the health of operators

Method used

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  • Use of fly ash synthesized channel joint impervious material for preparing highway asphalt mixture
  • Use of fly ash synthesized channel joint impervious material for preparing highway asphalt mixture
  • Use of fly ash synthesized channel joint impervious material for preparing highway asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Preparation of medium-sized AC-20 densely graded modified asphalt mixture

[0035] Mineral material: All properties meet the requirements of "Technical Specifications for Construction of Highway Asphalt Pavement" (JTGF40-2004).

[0036] The gradation of AC-20 ore is:

[0037]

[0038] Cementing material: fly ash synthetic channel joint anti-seepage material, A and B two-component, A: B (weight ratio) = 1: 1, wherein, the formula of A and B components should meet the requirements of patent ZL200310118992.X. Fly ash synthetic channel joint anti-seepage material in the cement: No. 70 road petroleum asphalt = 40%: 60%.

[0039] Oil-stone ratio: 5.0%.

[0040] Preparation steps: Prepare the road mixture according to the preparation steps described in the summary of the invention, and make Marshall test pieces and splits according to the T0702-2000 regulations and T0703-1993 regulations in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engin...

Embodiment 2

[0051] Embodiment 2: fine-grained type SMA-13 ​​asphalt horseshoe fat macadam mixture

[0052] Mineral material: All properties meet the requirements of "Technical Specifications for Construction of Highway Asphalt Pavement" (JTGF40-2004).

[0053] The fine-grained SMA-13 ​​mineral material gradation is:

[0054]

[0055] Cementing material: fly ash synthetic channel joint anti-seepage material, which is two-component A and B, A:B (weight ratio) = 1:2, wherein, the formula of A and B components should meet the requirements of patent ZL200310118992.X. Fly ash synthetic channel joint anti-seepage material in cement: No. 70 road petroleum asphalt = 50%: 50%.

[0056] Oil-stone ratio: 5.3%.

[0057]Preparation steps: Prepare the road mixture according to the preparation steps described in the summary of the invention, and make Marshall test pieces and splits according to the T0702-2000 regulations and T0703-1993 regulations in the "Test Regulations for Asphalt and Asphalt Mix...

Embodiment 3

[0068] Example 3: Densely graded asphalt stabilized macadam mixture

[0069] Mineral material: All properties meet the requirements of "Technical Specifications for Construction of Highway Asphalt Pavement" (JTGF40-2004).

[0070] Coarse-grained ATB-25 ore gradation is:

[0071]

[0072] Cementing material: fly ash synthetic channel joint anti-seepage material, which is two-component A and B, A:B (weight ratio) = 1:3, wherein, the formula of A and B components should meet the requirements of patent ZL200310118992.X. Fly ash synthetic channel joint anti-seepage material in cement: No. 70 road petroleum asphalt = 60%: 40%.

[0073] Oil-stone ratio: 4.9%.

[0074] Preparation steps: Prepare the asphalt mixture according to the preparation steps described in the summary of the invention, and make the Marshall test piece and split Crack, rutting test, linear shrinkage coefficient test piece. According to the T0709-2000, T0719-1993, T0716-1993, T0720-1993 regulations, the Mar...

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Abstract

The invention discloses an application of known flyash-compounded channel seam permeation resistant material on preparing a road asphalt mixed material. A modified asphalt mixing material using flyash-compounded channel seam permeation resistant material as a cementation material comprises normal pulverized stone, stone crumb, sand, slag, mineral powder and the asphalt mixing material used as the cementation material. The asphalt mixing material used as the cementation material in the asphalt mixing material accounts for 30 to 100 weight parts of the asphalt weight, and is replaced by the flyash-compounded channel seam permeation resistant material and the like of the same weight parts. The asphalt mixing material prepared by using the flyash-compounded channel seam permeation resistant material as the cementation material increases the using ways of the high additional value of the flyash, reduces the economic cost of the asphalt mixing material and improves the using performance of the asphalt mixed material. The mixed asphalt material has excellent road surface performance, simple technology, convenient use and easy popularization.

Description

technical field [0001] The invention relates to a new application of a known material, in particular to a new application of a fly ash synthetic channel joint anti-seepage material for preparing road asphalt mixture. Background technique [0002] In recent years, my country's highway construction has developed rapidly, and there is a huge market demand for highway asphalt mixture. In the asphalt mixture, asphalt is used as a cement to combine the mineral materials into a whole, and jointly resist the effects of abrasion, rutting load, and rainwater, so that the road surface becomes an impermeable and smooth whole, and avoids the lower road surface from being directly subjected to driving. and adverse effects of natural factors. Ordinary asphalt has disadvantages such as low softening point, high penetration, and strong temperature sensitivity. If ordinary asphalt is used to pave high-grade pavement, there will be problems such as soft pavement in summer and poor durability ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B18/08C04B24/32C04B24/12C04B24/04
CPCC04B2111/0075C04B26/26C04B40/0046Y02W30/91C04B18/08C04B24/00C04B24/045C04B24/08C04B24/121C04B24/32C04B24/36C04B40/0082C04B2103/605C04B2103/608C04B14/02C04B14/06C04B18/12C04B18/141
Inventor 张慧莉田堪良
Owner NORTHWEST A & F UNIV
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