Modified asphalt material and preparation method thereof

An asphalt modification and bitumen technology, which is used in building thermal insulation materials, building components, buildings, etc., can solve the problems of easily blocked voids, high requirements, and poor high temperature performance of asphalt modified materials, and achieves good storage stability. The effect of improving high temperature performance

Inactive Publication Date: 2008-02-06
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD +1
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AI Technical Summary

Problems solved by technology

The limitation is: high requirements for aggregates and binders, and the gaps are easy to be blocked after a period of use
In the Chinese patent (application number 200410043134.8), it is mentioned that "a kind of asphalt modified material, wherein the vinyl aromatic hydrocarbon-conjugated diene block copolymer 100 with a melt flow value less than 15 g / 10 minutes parts by weight, containing 0-100 parts by weight of tackifying resin and 5-100 parts by weight of blending oil", but the high temperature performance of this asphalt modified material is not good

Method used

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Embodiment Construction

[0019] In this specification, a modified asphalt obtained by mixing an asphalt-modified material with asphalt is referred to as an "asphalt composition", and a mixture obtained by mixing an asphalt-modified material, asphalt, and aggregates is referred to as an "asphalt mixture". Typically, the asphalt mixture is paved by laying it on a road.

[0020] In the case of mechanical equipment mixing, asphalt modifiers are added when the asphalt mixture is manufactured in the asphalt mechanical equipment. In the case of the premix method, an asphalt composition in which asphalt is mixed with an asphalt modified material is prepared in advance, aggregates are mixed with the asphalt composition, and an asphalt mixture is produced.

[0021] In the present invention, it is also possible to use recycled asphalt aggregates obtained from existing pavement waste as the aggregate-based asphalt mixture. Thus, recycled aggregates made from waste materials of existing asphalt pavements that are...

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Abstract

The invention discloses a bitumen modified material, which comprises 100 parts by weight of vinyl aromatic hydrocarbon-conjugated diene block copolymer with the flow value being less than 15g / 10 minutes relative to fused mass, 0 to 100 parts by weight of tackifying resin, 5 to 100 parts by weight of blending oil and 10 to 50 parts by weight of polyolefin. In addition, the invention also discloses the method of preparation of the bitumen modified material. Due to adding polyolefin, the invention not only maintains the physical intensity of existing bitumen modified material such as abrasion resistance, impact resistance and fluidity resistance as well as the advantages of excellent dissolubility, processability and storage stability, but also improves high temperature performance of bitumen modified material.

Description

【Technical field】 [0001] The present invention relates to asphalt modified materials and asphalt mixtures containing the same. In more detail, it relates to an asphalt modified material suitable for high-performance drainage and noise-reducing pavement for open-collector pavement and the like. 【Background technique】 [0002] For small and medium-sized cars, as the driving speed increases, the proportion of tire noise in the noise generated by the car is increasing. Therefore, building noise-reducing road surfaces has important practical significance for controlling traffic noise. The so-called low-noise asphalt pavement is also called multi-void asphalt pavement, also known as permeable (or drainage) asphalt pavement. It is to pave a layer of asphalt mixture with a high porosity on the ordinary asphalt pavement or cement concrete pavement structure layer, and its porosity is usually between 15% and 25%, and some even reach 30%. Research data show that, according to the thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L23/00C08L21/00
Inventor 赵欣平何唯平
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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