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Reinforcing agent for modifying acidic aggregate asphalt mixture and application

A technology of asphalt mixture and acid aggregate, which is applied in the field of road construction materials, to achieve the effect of reducing the degree of aging, ideal social benefits, and reducing harm to people and the environment

Active Publication Date: 2018-12-11
山东高速龙青公路有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a reinforcing agent and its application for the modification of acidic aggregate asphalt mixture, which solves the problems existing in the prior art

Method used

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  • Reinforcing agent for modifying acidic aggregate asphalt mixture and application
  • Reinforcing agent for modifying acidic aggregate asphalt mixture and application
  • Reinforcing agent for modifying acidic aggregate asphalt mixture and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A reinforcing agent for the modification of the above-mentioned acid aggregate asphalt mixture, including modifier A and modifier B used in conjunction; the quality of modifier A is 0.2% of the quality of the above-mentioned base asphalt, and the modifier B The mass of the acidic aggregate asphalt mixture is 1% of the total mass;

[0022] Modifier A is silane coupling agent KH550, and modifier B is 300 mesh natural asphalt solid powder.

[0023] The specific ratio of acid aggregate asphalt mixture suitable for the lower layer of the road is shown in Table 1:

[0024] Table 1

[0025]

[0026] The amount of base asphalt in Table 1 above adopts the internal mixing method.

[0027] On the basis of the above-mentioned acid aggregate asphalt mixture used for the lower layer of the road, the reinforcing agent of this embodiment was added for modification, and the modified asphalt mixture for acid aggregate was obtained.

[0028] The application of the reinforcing agent ...

Embodiment 2

[0036] A reinforcing agent for the modification of the above-mentioned acidic aggregate asphalt mixture, including modifier A and modifier B used in conjunction; the quality of modifier A is 2% of the quality of the above-mentioned base asphalt, and the modifier B The quality of the acidic aggregate asphalt mixture is 0.4% of the total mass;

[0037] Modifier A is silane coupling agent KH570, and modifier B is 600 mesh natural asphalt solid powder.

[0038] The acidic aggregate asphalt mixture suitable for the middle surface of the road, the specific ratio is shown in Table 3 below:

[0039] table 3

[0040]

[0041] The amount of base asphalt in Table 3 above adopts the internal mixing method.

[0042] On the basis of the above-mentioned acidic aggregate asphalt mixture used for the road middle surface layer, the reinforcing agent of this embodiment is added for modification, and the modified asphalt mixture for acidic aggregate is obtained.

[0043] The application of ...

Embodiment 3

[0051] A reinforcing agent for the modification of the above-mentioned acidic aggregate asphalt mixture, including modifier A and modifier B used in conjunction; the quality of modifier A is 1% of the quality of the above-mentioned base asphalt, and the modifier B The mass of the acidic aggregate asphalt mixture is 0.7% of the total mass;

[0052] Modifier A is silane coupling agent KH550, and modifier B is 400 mesh natural asphalt solid powder.

[0053] The acid aggregate asphalt mixture suitable for the upper layer of the road, the specific ratio is shown in Table 5 below:

[0054] table 5

[0055]

[0056] The dosage of asphalt and fiber in the above table 5 are all adopted internal blending method.

[0057] On the basis of the above-mentioned acidic aggregate asphalt mixture used for the upper layer of the road, the reinforcement agent of this embodiment was added for modification, and the modified asphalt mixture for acidic aggregate was obtained.

[0058] The applica...

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Abstract

The invention relates to the technical field of road building materials, in particular to a reinforcing agent for modifying an acidic aggregate asphalt mixture and application. The reinforcing agent for modifying the acidic aggregate asphalt mixture comprises a modifier A and a modifier B which are matched to be used, wherein the mass of the modifier A is 0.2% to 2% of the mass of matrix asphalt in the acidic aggregate asphalt mixture, and the mass of the modifier B is 0.4% to 1% of the total mass of the acidic aggregate asphalt mixture. When the reinforcing agent for modifying the acidic aggregate asphalt mixture is applied to the road paving, the mixing temperature and the molding temperature are reduced by several tens of degrees compared with the ordinary hot mixed asphalt mixture, andthe energy consumption is saved, and the aging degree of the asphalt is effectively weakened; meanwhile, the reduction of mixing temperature can reduce the emission of toxic gases, and minimize the harm to people and the environment, and the reinforcing agent has ideal social, economic and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of road building materials, in particular to a reinforcing agent for modifying acidic aggregate asphalt mixture and its application. Background technique [0002] The commonly used building stones for asphalt concrete pavement are alkaline limestone and partial neutral basalt. These materials are widely used because of their good adhesion to asphalt. Due to the limited natural resources and the rapid development of highways, the supply of high-quality aggregates used in large quantities is in short supply, which has brought great pressure to the mining and supply of aggregates. Basalt and limestone are ideal coarse aggregates for asphalt concrete. Aggregates are becoming more and more scarce. However, the adhesion between acidic aggregates and asphalt often fails to meet the requirements. After the pavement using acidic aggregates is formed, under the action of water erosion, the asphalt and the mineral agg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B26/26
CPCC04B26/26C04B40/0039C04B2111/0075C04B24/42C04B24/36C04B14/048C04B14/14C04B14/28
Inventor 白玉铎高国华李传海阚涛
Owner 山东高速龙青公路有限公司
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