Special asphalt mixture capable of inhibiting flying of drainage asphalt pavement stones and preparation method thereof

A technology for asphalt mixture and drainage asphalt, applied in the field of road engineering, can solve the problems of road performance and maintenance, stone scattering, blockage, etc., to achieve the effect of lasting pavement function and strengthening anti-scattering ability

Active Publication Date: 2014-09-10
SHANGHAI PUDONG ROAD & BRIDGE CONSTR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The advantages of drainage asphalt pavement are as mentioned above, and its main disadvantage is the road performance and maintenance problems caused by large voids, mainly manifested in the problem of stone scattering and blockage

Method used

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  • Special asphalt mixture capable of inhibiting flying of drainage asphalt pavement stones and preparation method thereof

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Experimental program
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Embodiment 1

[0030] Use the formula in the following table to produce drainage special asphalt mixture.

[0031]

[0032] Wherein, the cross-sectional diameter of each metal wire is 0.3mm, the length is 10mm, the content of chromium Cr in the composition is 16%, and the content of nickel Ni is 10%.

[0033] Exemplarily, the specific preparation process of the special asphalt mixture that suppresses the scattering of drainage asphalt pavement stones in this embodiment is as follows:

[0034] The first step is to prepare various raw materials according to the above percentages.

[0035] In the second step, the high-viscosity modified asphalt can be prepared first: first, the SBS is added to the No. 70 petroleum asphalt, heated to 180°C-185°C, stirred for 30min-40min, and then the stabilizer is added, Cut at a high speed of 3000r / min for 15min to 20min and put it into a storage tank for later use. The storage temperature should not be lower than 170°C.

[0036] Among them, the prepared h...

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PUM

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Abstract

The invention discloses a special asphalt mixture capable of inhibiting flying of drainage asphalt pavement stones and a preparation method of the mixture. The special asphalt mixture capable of inhibiting the flying of the drainage asphalt pavement stones comprises aggregate, filler, high viscosity modified asphalt and an external additive, wherein the aggregate comprises basalt, diabase and / or limestone; the filler is limestone mineral powder; the high viscosity modified asphalt is made from SBS (styrene butadiene styrene), No.70 petroleum asphalt and a stabilizer through stirring and high shearing at high temperature; the external additive is a plurality of fine metal filaments. The preparation method of the special asphalt mixture comprises the following steps: adding the fine metal filaments into the aggregate, mixing, spraying the high viscosity modified asphalt and the filler at the same time, and continuously mixing, so that the special asphalt mixture is formed. The special asphalt mixture disclosed by the invention has the advantages that the fine metal filaments are creatively added, the problem of flying of stones is effectively inhibited, void ratio is reduced as a skeleton space is filled or blocked, and drainage and noise reduction functions of the drainage asphalt pavement can not be influenced.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a special asphalt mixture for suppressing scattering of drainage asphalt pavement stones and a preparation method thereof. Background technique [0002] Drainage asphalt pavement should be more accurately called "porous asphalt pavement". The English translation "Porous Asphalt" given by Europe and Japan is more appropriate, reflecting the essential characteristics of drainage asphalt pavement - high voids. The open graded wear layer (OGFC) adopted by the United States since the 1950s, the low-noise pavement promoted by Europe since the 1970s, and the drainage asphalt pavement developed by Japan since the 1990s, from its structural characteristics and pavement functions Look, they actually belong to the same road type. The main feature of porous drainage and noise-reducing asphalt pavement is that its porosity is relatively high, generally around 20%, so it can effectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B14/48
Inventor 罗芳艳闫国杰裘国光李交徐韵淳王腾飞夏庆宇邓国民袁月邱轶胡睿吴月琴李俊
Owner SHANGHAI PUDONG ROAD & BRIDGE CONSTR
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