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Water-permeable asphalt mixture doped with BMF basalt fiber

A technology of basalt fiber and permeable asphalt, applied in the field of highway building materials, can solve the problems of high cost of raw materials, prone to rutting, aging of asphalt membrane, etc., and achieve the effect of improving high temperature resistance stability, prolonging service life and good road surface smoothness

Active Publication Date: 2017-10-20
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But at the same time, there are still many problems in the actual application of permeable asphalt mixture: poor durability, because of its large void ratio, it is easy to be eroded by water, aging the asphalt film and accelerating road damage; high production cost, High viscosity modified asphalt is used in permeable asphalt mixture, and the cost of raw materials is high; the mixing time is longer than that of ordinary asphalt mixture, and the mixing temperature is higher than that of ordinary asphalt mixture, so the production cost is high; the maintenance cost is high, and the permeable asphalt mixture is used in summer. Under the load of the vehicle, it is easy to produce rutting

Method used

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  • Water-permeable asphalt mixture doped with BMF basalt fiber
  • Water-permeable asphalt mixture doped with BMF basalt fiber
  • Water-permeable asphalt mixture doped with BMF basalt fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0033] First, heat the finished SBS modified asphalt to a molten state in an oven at 165°C, and then preheat 11,760g of coarse and fine aggregates and 240g of mineral powder (limestone with a particle size below 0.075mm) in an oven at 195°C for more than 6 hours for heat preservation. Heat to the mixing temperature of 170°C, then add 11760g of preheated coarse and fine aggregates (the mass of 1# material, 2# material, 3# material and 4# material are 3960g, 5640g, 660g, 1500g respectively) and mix Mix in the pot for 15 seconds, mix in 36g of North American Fu basalt fiber and 50.1g of HVA high-viscosity agent and mix for 90 seconds, add 552g of the above-mentioned SBS modified asphalt for heat preservation and mix for 90 seconds, mix in 240g of preheated mineral powder and mix 90s, rolling and molding with a wheel roller forming machine, and making the described a kind of rutting slab specimen mixed with North American basalt fiber permeable asphalt mixture; the asphalt mixture ...

Embodiment 2

[0035] First, heat the finished SBS modified asphalt to a molten state in an oven at 165°C, and preheat 3920g of coarse and fine aggregates and 80g of mineral powder (limestone with a particle size of 0.075mm or less) in an oven at 195°C for more than 6 hours for heat preservation. Heat to the mixing temperature of 170°C, then add 3920g of preheated coarse and fine aggregates (the mass of 1# material, 2# material, 3# material and 4# material are 1320g, 1880g, 220g, 500g respectively) and mix Mix in the pot for 15 seconds, add 12g of North American Fu basalt fiber and 16.7g of HVA high-viscosity agent and mix for 90 seconds, add 192g of the above-mentioned SBS modified asphalt for heat preservation and mix for 90 seconds, mix in 80g of preheated mineral powder and mix 90s, the Marshall test piece was prepared by the compaction method, and the Marshall test piece was formed by mixing the North American Fu basalt fiber permeable asphalt mixture, and the asphalt mixture was graded ...

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Abstract

The invention discloses a water-permeable asphalt mixture doped with BMF basalt fiber. The mixture comprises the following components in percentage by weight: 4.4-4.7% of SBS modified asphalt, 0.274-0.29% of BMF basalt fiber, 93.1-95.3% of mineral materials and 0.296-0.4% of HVA (High-Viscosity Agents). A proper amount of BMF basalt fiber is doped into the prepared water-permeable asphalt mixture; the water stability can be improved; meanwhile, the high-temperature resistance stability can be improved; the operation is simple and convenient; and the cost is reduced.

Description

technical field [0001] The invention belongs to the research field of road building materials, and in particular relates to a permeable asphalt mixture mixed with North American Fu basalt fiber. Background technique [0002] With the rapid development of my country's economy, the traffic conditions of expressways present the characteristics of heavy load, high flow and obvious channelization, and the quality requirements for asphalt pavement are getting higher and higher. In addition, natural phenomena such as freezing disasters, alternating high and low temperature cycles, and acid rain erosion will also cause a large number of early-stage diseases on asphalt pavement. Due to the shortcomings of asphalt materials such as easy flow at high temperature, easy hardening and brittleness at low temperature, and high temperature sensitivity, the application of asphalt materials in engineering is severely limited. Therefore, it is urgent to modify asphalt to improve the road perfor...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B14/46
Inventor 肖鹏王胜康爱红吴正光李波陆如洋曹佳伟伏伟俐
Owner YANGZHOU UNIV
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