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Composite modified asphalt and preparation method thereof

A technology for compounding modified asphalt and bitumen, which is applied to building components, building insulation materials, buildings, etc., can solve problems such as insufficient measures, and achieve the effects of low cost, excellent high and low temperature resistance and aging resistance, and simple preparation method.

Inactive Publication Date: 2011-08-17
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, although various methods have been adopted to solve the above problems, the existing measures still have deficiencies

Method used

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  • Composite modified asphalt and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Based on the base asphalt (100%), in terms of mass percentage, according to SBS: montmorillonite: stabilizer: coupling agent = 4%: 4%: 0.2%: 0.5%. Heat 500g90# road asphalt to 175~180℃, add 20.0g SBS, 1.0g HMD stabilizer, 20.0g montmorillonite and 2.5g titanate coupling agent in sequence at a shear speed of 3000r / min, mixing time It is 2h, the modifier dissolves evenly, and the performance of the modified asphalt is tested. See Table 1.

Embodiment 2

[0023] Based on the base asphalt (100%), in terms of mass percentage, according to SBS: montmorillonite: stabilizer: coupling agent = 4%: 4%: 0.2%: 0.5%. Heat 400g90# road asphalt to 175~180℃, add 16.0g SBS, 0.8g HMD type stabilizer, 16.0g montmorillonite and 2.0g titanate coupling agent at a shear speed of 4000r / min, mixing time For 1.5h, the modifier dissolves evenly, and the performance of the modified asphalt is tested. See Table 1.

Embodiment 3

[0025] Based on the base asphalt (100%), in terms of mass percentage, according to SBS: montmorillonite: stabilizer: coupling agent = 4%: 4%: 0.2%: 0.5%. Heat 350g90# road asphalt to 175~180℃, and add 14.0g SBS, 0.6g HMD type stabilizer, 14.0g montmorillonite and 1.8g titanate coupling agent at a shear speed of 5000r / min, mixing time It is 1h, the modifier is dissolved evenly, and the performance of modified asphalt is tested. See Table 1.

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Abstract

The invention discloses composite modified asphalt, which is prepared by mixing modifier and matrix asphalt, wherein the modifier consists of the following components in percentage by mass (based on 100 percent of the matrix asphalt): 1 to 10 percent of inorganic substance filler, 1 to 10 percent of polymer, 0.1 to 5 percent of stabilizer, and 0.1 to 5 percent of coupling agent. The prepared modified asphalt has good high and low temperature resistance and ageing resistance, can prolong the service life of roads and reduce the maintenance expense of pavements, and is suitable to be spread in the engineering of high-grade roads, airfield runways, parking lots, bridges and the like.

Description

Technical field [0001] The invention relates to a composite modified asphalt and a preparation method thereof, belonging to the technical field of asphalt modification and processing. Background technique [0002] Asphalt is a commonly used road paving material, but limited by its own performance, the high and low temperature performance of asphalt is unstable. In summer, under strong sunlight, asphalt is easy to soften, rutting, crowding, etc.; cracks are easy to appear in cold winter, which seriously affects the comfort of road driving and road life. With the rapid development of economy and society, transportation is developing in the direction of high speed, heavy load and large flow. This not only requires the roadbed to be solid and firm, but also requires the road surface to have the functions of wear resistance, high temperature resistance, softening resistance, and leveling. . The purpose of asphalt modification is to improve the high temperature stability, low tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K3/34C08K3/26
Inventor 唐新德庞来学李超周德杰华相纲
Owner SHANDONG JIAOTONG UNIV
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