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A kind of asphalt sacrificial layer and its preparation method and application

A technology of asphalt and coarse aggregate, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of steel slag not being able to be effectively used, so as to improve competitive advantage, enhance road performance, and enhance wear resistance The effect of sex and intensity

Active Publication Date: 2020-08-25
MCC BAOSTEEL TECH SERVICE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an asphalt loss layer and its preparation method and application, which are used to solve the problem that steel slag cannot be effectively utilized in the prior art

Method used

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  • A kind of asphalt sacrificial layer and its preparation method and application
  • A kind of asphalt sacrificial layer and its preparation method and application
  • A kind of asphalt sacrificial layer and its preparation method and application

Examples

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Effect test

Embodiment 1

[0039] The following formula is an ordinary SMA-10 ultra-thin wear layer. Both the coarse aggregate and the fine aggregate are made of diabase, the mineral powder is made of limestone powder, and the asphalt is made of SBS modified asphalt. The oil-stone ratio in this example refers to the ratio of asphalt to The ratio of the total mass of coarse aggregate to fine aggregate.

[0040] Material specification Mass ratio% Coarse aggregate (10-5mm) 60 Fine aggregate (0-3mm, 3-5mm) 27 limestone powder 13 Oil stone ratio% 6.0

Embodiment 2

[0042]The following formula is the asphalt loss layer in this application scheme. The coarse aggregate is made of steel slag, the fine aggregate and steel slag powder are made of steel slag, and the asphalt is made of SBS modified asphalt.

[0043] Material specification Mass ratio% Coarse aggregate (10-5mm) 65 fine aggregate 24 steel slag powder 11 Oil stone ratio% 6.2

Embodiment 3

[0045] The following formula is the asphalt loss layer in this application scheme. The coarse aggregate is made of steel slag, the fine aggregate and steel slag powder are made of steel slag, and the asphalt is made of SBS modified asphalt.

[0046]

[0047]

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PUM

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Abstract

The invention provides an asphalt loss layer. The asphalt loss layer comprises, by weight, 28-65 parts of coarse aggregates, 9-32 parts of fine aggregates and 8-13 parts of steel slag ore powder, andalso comprises asphalt, and the asphalt accounts for 5.5-7% of the total weight of the coarse aggregates and the fine aggregates. The steel slag and modified asphalt are used to prepare the ultrathinasphalt loss layer, so the wear resistance and the strength of the asphalt are effectively enhanced, and the anti-rutting ability of the asphalt loss layer is effectively improved; and the steel slagore powder contains a material with the size being 75 [mu]m or less, so the steel slag ore powder is slowly hydrated when meeting water in order to improve the strength and the water stability of theasphalt loss layer, thereby the quality of the asphalt loss layer is stable and reliable.

Description

technical field [0001] The invention relates to an asphalt sacrificial layer, in particular to an asphalt sacrificial layer with steel slag as the main raw material. Background technique [0002] In recent years, my country's expressway has developed rapidly. The ultra-thin wear layer can effectively improve the skid resistance of the pavement, increase the durability of the pavement and reduce the operating cost of the road. It can be used for preventive maintenance of asphalt pavement, new pavement upper layer and improvement of cement concrete pavement driving comfort. Steel slag is industrial waste slag in the steelmaking process, and due to its low utilization rate, a large amount of steel slag is piled up and discarded. Steel slag has the characteristics of high alkalinity, hardness and wear resistance, and is suitable for use in asphalt mixture. [0003] There are many types of mixtures used in ultra-thin wear layers, mainly Superpave densely graded mixtures, SMA mix...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B18/14
CPCC04B26/26C04B2111/0075C04B18/142C04B20/0076C04B20/008Y02W30/91
Inventor 刘国威朱李俊韩甲兴金强
Owner MCC BAOSTEEL TECH SERVICE
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