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Flexible fiber asphalt mixture and preparation method thereof

A technology of asphalt mixture and mixture, which is applied in the field of curlable fiber asphalt mixture and its preparation, can solve the problems of great difficulty and little research on asphalt mixture, and achieve reliable quality assurance, reduce adverse effects, and good deformation resistance Effect

Inactive Publication Date: 2014-07-30
BEIJING MUNICIPAL BRIDGE MAINTENANCE MANAGEMENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of pavement engineering, block pavement technology is more widely used, such as paving pavement with prefabricated cement concrete blocks, strip stones, block stones and bricks, and the prefabricated on-site installation technology of asphalt pavement is difficult. There are few related researches on mixtures at home and abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 prepares modifying agent

[0040] 1) Prepare materials according to the following weight ratio:

[0041] SBS 55 POE 11C 9 Petroleum resin 26.2

[0042] Sasol Wax 4.2 Rubber Oil 8.6

[0043] 2) After mixing the above raw materials, put them into a twin-screw extruder for melting and kneading, and then extrude and granulate to obtain granules with a particle diameter of <3 mm, which is the modifier.

[0044] Wherein, the melting temperature is 120-160°C.

[0045] The styrene-butadiene-styrene copolymer elastomer in this embodiment is selected from SBS1301 of Yueyang Petrochemical; the ethylene-octene copolymer elastomer is selected from DuPont POE7467 of the United States; the resin is selected from Lanzhou Petrochemical's C9 petroleum resin; the wax selection is selected The industrial grade Sasol wax of Guangzhou Wanggao Chemical Co., Ltd.; the softener is K6H naphthenic rubber oil from Karamay Oil Refinery.

Embodiment 2

[0046] Embodiment 2 prepares modifying agent

[0047] 1) Prepare materials according to the following weight ratio:

[0048] SBS 35 EVA 15C 5 Petroleum resin 32.8

[0049] Wax 9.4 Butane oil 13.8

[0050] 2) After mixing the above raw materials, put them into a twin-screw extruder for melting and kneading, and then extrude and granulate to obtain granules with a particle diameter of <3 mm, which is the modifier.

[0051] Wherein, the melting temperature is 120-160°C.

Embodiment 3

[0052] Embodiment 3 prepares modifying agent

[0053] 1) Prepare materials according to the following weight ratio:

[0054] SBS 47 PO 12.5C 5 Petroleum resin 39.6

[0055]Wax 7 Castor oil 13.92) After mixing the above raw materials, put them into a twin-screw extruder for melting and kneading, and then extrude and granulate to obtain particles with a particle size of <3 mm, which is the modifier.

[0056] Wherein, the melting temperature is 120-160°C.

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Abstract

The invention discloses a flexible fiber asphalt mixture and a preparation method thereof. The flexible fiber asphalt mixture comprises the following raw materials in parts by weight: 0.6-3.5 parts of modifier, 4.5-11.5 parts of asphalt, 86-95 parts of mineral aggregate and 0.005-0.02 parts of fibers. The preparation method comprises the following steps: mixing the modifier and preheated aggregate under an agitating condition and evenly agitating; then adding liquid petroleum pitch and evenly agitating; then adding the fibers and evenly agitating; finally adding ore powder, and evenly agitating to obtain the flexible fiber asphalt mixture. The preparation method disclosed by the invention is simple, and the prepared flexible fiber asphalt mixture has good deform resistance, crack resistance, fatigue resistance and high temperature resistance and can be prefabricated into an asphalt pavement layer to be rolled and stored, and moreover, the rolled flexible fiber asphalt mixture can be paved and installed just like paving a carpet in field pavement, so as to quickly finish construction and quickly open traffic.

Description

technical field [0001] The invention belongs to the field of road engineering, and in particular relates to a curlable fiber asphalt mixture and a preparation method thereof. Background technique [0002] In addition to meeting the basic requirements of asphalt concrete on ordinary roads, steel bridge deck pavement should also have technical performances that are compatible with the structural characteristics and service conditions of orthotropic steel bridge decks, including the following performances: (1 ) sufficient strength and reasonable thickness; (2) excellent deformation coordination; (3) interlayer bonding performance; 4) high temperature stability and crack resistance; (5) durability; (6) skid resistance and Flatness. [0003] At present, the commonly used materials for steel bridge deck pavement mainly include pouring asphalt mixture, modified SMA mixture and epoxy asphalt mixture. It is not suitable for construction; the deformation coordination of the modified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B16/06C04B14/38
Inventor 牛存良曹东伟张毅唐国奇王凤平董元帅勘立军张艳君
Owner BEIJING MUNICIPAL BRIDGE MAINTENANCE MANAGEMENT
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