Green and environment-friendly permeable asphalt mixture for cold regions and method for preparing green and environment-friendly permeable asphalt mixture

A green, environmentally friendly, permeable asphalt technology, applied in the direction of climate change adaptation, can solve the problems of permeable asphalt pavement not suitable for use in cold areas, poor water permeability, unsatisfactory asphalt pavement strength, etc., to achieve major engineering application value, increase viscosity, The effect of improving high temperature stability and low temperature crack resistance and frost resistance

Inactive Publication Date: 2019-02-19
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a green and environment-friendly water-permeable asphalt mixture in cold regions, which solves the problem of poor water permeability of high-strength asphalt pavements in the prior art, unsatisfactory strength of asphalt pavements with good water permeability, and unsuitable existing water-permeable asphalt pavements. Problems with use in cold regions

Method used

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  • Green and environment-friendly permeable asphalt mixture for cold regions and method for preparing green and environment-friendly permeable asphalt mixture
  • Green and environment-friendly permeable asphalt mixture for cold regions and method for preparing green and environment-friendly permeable asphalt mixture

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A green environment-friendly permeable asphalt mixture in cold regions, the preparation raw materials are composed of the following components in parts by weight: 220 parts of steel slag, 9.00 parts of SBS modified asphalt, 6.26 parts of limestone mineral powder, 1.27 parts of diatomite, and a particle size of 0.82 parts of 40-60 mesh rubber powder, 0.64 parts of TPS asphalt high viscosity agent, 0.27 parts of ethylene bis stearic acid amide, 0.71 parts of basalt fiber;

[0027] The specific preparation method is as follows:

[0028] Step 1, weigh 220 parts of steel slag, 9 parts of SBS modified asphalt, 6.26 parts of limestone mineral powder, 1.27 parts of diatomaceous earth, 0.82 part of rubber powder, 0.64 part of TPS asphalt high-viscosity agent, ethylene bis-stearin 0.27 part of acid amide, 0.71 part of basalt fiber, set aside;

[0029] Step 2, heating SBS modified asphalt to 165-170°C, then adding rubber powder, TPS asphalt high viscosity agent and ethylene bis s...

Embodiment 2

[0034] A green environment-friendly permeable asphalt mixture in cold regions, the preparation raw materials are composed of the following components in parts by weight: 210 parts of steel slag, 8.80 parts of SBS modified asphalt, 6.36 parts of limestone mineral powder, 1.14 parts of diatomite, and a particle size of 0.70 parts of 40-60 mesh rubber powder, 0.53 parts of TPS asphalt high viscosity agent, 0.25 parts of stearic acid amide, 0.47 parts of basalt fiber;

[0035] The preparation method is the same as that of Example 1, except that the formula of Example 1 is changed into that of Example 2.

Embodiment 3

[0037] A green environment-friendly permeable asphalt mixture in cold regions, the preparation raw materials are composed of the following components in parts by weight: 230 parts of steel slag, 9.53 parts of SBS modified asphalt, 6.14 parts of limestone mineral powder, 1.23 parts of diatomite, and a particle size of 0.95 parts of 40-60 mesh rubber powder, 0.76 parts of TPS asphalt high viscosity agent, 0.30 parts of stearic acid amide, 0.94 parts of basalt fiber;

[0038] The preparation method is the same as that of Example 1, except that the formula of Example 1 is changed into that of Example 3.

[0039] It should be noted that the steel slag in Examples 1-3 comprises the following components in weight percent: Fe 2 o 3 : 6%, FeO: 25%, SiO 2 : 15%, CaO: 35%, MgO: 15%, Al 2 o 3 : 3.9%, P: 0.1%;

[0040] The basalt fiber has a length of 6.0 mm and a diameter of 10-13 μm.

[0041]In order to further illustrate the effect of the present invention, the present invention a...

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Abstract

The invention discloses a green and environment-friendly permeable asphalt mixture for cold regions. The green and environment-friendly permeable asphalt mixture comprises, by weight, 210-230 parts ofsteel slag, 8.80-9.53 parts of SBS (styrene-butadiene-styrene block copolymer) modified asphalt, 6.14-6.36 parts of limestone mineral powder, 1.14-1.27 parts of diatomaceous earth, 0.70-0.95 part ofrubber powder, 0.53-0.76 part of TPS (toughened polystyrene) asphalt high-viscosity agents, 0.25-0.30 part of warm mixing agents and 0.47-0.94 part of basalt fibers. The invention further provides a method for preparing the green and environment-friendly permeable asphalt mixture for the cold regions. The green and environment-friendly permeable asphalt mixture and the method have the advantages that the green and environment-friendly permeable asphalt mixture is sufficient in strength, water stability, durability, frost resistance and water permeability, rainwater can be immediately permeatedinto spaces below pavements, accordingly, the driving safety can be greatly guaranteed, driving noise can be lowered, and urban water logging can be reduced; the construction temperatures further canbe reasonably lowered, the construction difficulty can be lowered, and the green and environment-friendly permeable asphalt mixture and the method have important engineering application values.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to a green and environment-friendly permeable asphalt mixture in cold regions and a preparation method thereof. Background technique [0002] At present, the urban road pavement in Northeast my country adopts the principle of dense distribution design. Although this pavement has high strength, water stability and low temperature crack resistance, but at the same time, due to the small void ratio of the pavement, the driving noise is large, and Rainwater cannot be directly drained into the ground through the seepage of the road surface, which to a certain extent destroys the balance of the urban ecosystem in Northeast China. More importantly, if the water on the road is not drained in time, it will cause water mist and glare, and motor vehicles will easily "skid", which will easily lead to traffic accidents. Therefore, more and more experts and scholars...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B111/76
CPCC04B26/26C04B2111/00017C04B2111/00284C04B2111/76C04B18/142C04B14/28C04B14/08C04B18/22C04B2103/44C04B24/124C04B14/4643Y02A30/30
Inventor 刘寒冰柴潮程永春魏海斌
Owner JILIN UNIV
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