Composite modified asphalt of styrene butadiene styrene block polymer (SBS) and rubber powder and preparation method thereof

A technology of composite modified asphalt and rubber powder, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems that the effect of asphalt modification is not obvious, the effect of matrix asphalt modification is not very obvious, etc., and the construction process is reasonable and feasible , the effect of noise reduction is obvious, and the effect of performance improvement

Inactive Publication Date: 2013-04-24
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN102181163A discloses a waste rubber powder, SBS composite modified asphalt and its production process. The addition of SBS is only 0.1%~0.4%, and the modification effect on asph

Method used

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  • Composite modified asphalt of styrene butadiene styrene block polymer (SBS) and rubber powder and preparation method thereof

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Effect test

Embodiment 1

[0020] The present invention is to design a rubber powder / SBS composite modified asphalt, its components include stabilizer 3‰, activator 0.3‰, rubber powder 10%, SBS 2%, styrene-butadiene rubber filler oil 3%, the rest is matrix asphalt .

[0021] The rubber powder used in the present invention adopts tire rubber powder ground and pulverized at normal temperature, and uses bias tire powder or rubber powder with a higher content of natural rubber powder, and the rubber powder specification adopts 60 mesh. The stabilizer is a synthetic substance, the activator is sulfur powder, and the styrene-butadiene rubber filling oil is processed from furan formaldehyde.

[0022] Taking the above-mentioned rubber powder / SBS composite modified asphalt as an example, its production process includes the following processing steps:

[0023] 1) Divide the base asphalt into two parts with equal mass. The first part is first preheated to 125±2°C, and 2% (the proportions refer to the percentage o...

Embodiment 2

[0027] The present invention is to design a rubber powder / SBS composite modified asphalt, its components include stabilizer 4‰, activator 0.3‰, rubber powder 10%, SBS 2%, styrene-butadiene rubber filler oil 3%, the rest is matrix asphalt .

[0028] The rubber powder used in the present invention adopts tire rubber powder ground and pulverized at normal temperature, and uses bias tire powder or rubber powder with a higher content of natural rubber powder, and the rubber powder specification adopts 60 mesh. The stabilizer is a synthetic substance, the activator is sulfur, and the styrene-butadiene rubber filler oil is processed from furan formaldehyde.

[0029] Taking the above-mentioned rubber powder / SBS composite modified asphalt as an example, its production process includes the following processing steps:

[0030] 1) Divide the base asphalt into two parts with equal mass. The first part is first preheated to 125±2°C, and 2% (the proportions refer to the percentage of the to...

Embodiment 3

[0034] On the basis of implementation case 4, the optimized case design of the present invention is a rubber powder / SBS composite modified asphalt, and its components include stabilizer 4‰, activator 0.3‰, rubber powder 15%, SBS 2%, styrene-butadiene Rubber filling oil 3%, the rest is base asphalt.

[0035] The rubber powder used in the present invention adopts tire rubber powder ground and pulverized at normal temperature, and uses bias tire powder or rubber powder with a higher content of natural rubber powder, and the rubber powder specification adopts 60 mesh. The stabilizer is a synthetic substance, the activator is sulfur, and the styrene-butadiene rubber filler oil is processed from furan formaldehyde.

[0036] Taking the above-mentioned rubber powder / SBS composite modified asphalt as an example, its production process includes the following processing steps:

[0037] 1) Divide the base asphalt into two parts with equal mass. The first part is first preheated to 125±2°...

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Abstract

The invention relates to a composite modified asphalt of styrene butadiene styrene block polymer (SBS) and rubber powder and a preparation method thereof. The modified asphalt comprises 0.3-0.4% of a stabilizer, 0.03% of an activating agent, 10-15% of rubber powder, 2% of SBS, 3-4% of styrene-butadiene rubber extending oil and the balance of matrix asphalt, wherein the total weight meets 100%. The preparation method of the modified asphalt comprises the steps of dividing the matrix asphalt into two equal mass of parts, firstly, preheating the first part to 125+/-2 DEG C; adding the SBS and the styrene-butadiene rubber extending oil to heated asphalt to shear and disperse at medium and high speeds; adding the rubber powder and the activating agent to the other part of matrix asphalt, swelling for 2 hours at 160 DEG C, finally shearing and dispersing the two parts of mixtures for 1 hour under the condition of 180 DEG C, and then adding the stabilizer, and cutting and developing for 1 hour at a low speed and then preparing the composite modified asphalt of rubber powder/SBS. The composite modified asphalt of the SBS and the rubber powder disclosed by the invention has the advantages that the composite modified asphalt is fully swelled; the noise-reduction is obviously reduced; and the preparation method is reasonable in construction technology, low in energy consumption, and excellent in performance of the composite modified asphalt.

Description

technical field [0001] The invention relates to an SBS+rubber powder composite modified asphalt and a preparation method thereof. Background technique [0002] At present, the actual quality of my country's highways has problems that cannot be ignored. As far as asphalt pavement is concerned, roads generally have problems of poor durability, short service life and early damage. Typical damages such as subsidence, cracks, ruts, looseness, and potholes on asphalt pavement can be seen everywhere on urban roads, which seriously affects The use performance of the road is deteriorated, causing great economic waste and potential safety hazards. The reasons for these pavement damages, in addition to factors such as design, construction, maintenance, etc., are also important reasons for the performance of materials, especially asphalt materials. Generally speaking, asphalt materials with weak temperature sensitivity, good high-temperature performance and low-temperature performance...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L21/00C08L53/02C08L9/06C08K3/06
Inventor 叶奋王胜武金婷黄运徐骁龙
Owner TONGJI UNIV
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