SBS (Styrene-Butadiene-Styrene) modified asphalt mixture and preparation method thereof

A modified asphalt and mixture technology, which is applied in the field of modified asphalt, can solve the problems of asphalt hardening and cracking, reduce the road performance and service life of asphalt pavement, and achieve the extension of road life, excellent anti-aging performance, and enhanced heat resistance Effect

Active Publication Date: 2019-02-15
湖北津泰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, like most organic compounds, SBS-modified asphalt will also be affected by high temperature, oxygen, ultraviolet radiation, etc. during storage, transportation, paving and long-term service, which will cause asphalt hardening and cracking, which seriously reduces the quality of the asphalt. Road performance and service life of pavement

Method used

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  • SBS (Styrene-Butadiene-Styrene) modified asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of grafted SBS modified asphalt, prepared by the following steps: heating 90 parts of base asphalt to 165 ° C, adding 3 parts of grafted SBS modifier, 1.2 parts of 4-aminobenzothiophene, 0.8 1 part of diaminobenzamide and 1 part of oxyflavone, keep the reaction temperature at 170°C, stir for 0.5 hours, mix the raw materials evenly, grind them in the colloid mill for 0.5 hours, stop the colloid mill, keep the reaction temperature, and continue to stir for 2 hours , and then add 1 part of dextran to it under low-speed stirring, and after stirring evenly, the grafted SBS modified asphalt is prepared.

Embodiment 2

[0038] A kind of grafted SBS modified asphalt, prepared by the following steps: 100 parts of base asphalt are heated to 175 ° C, 5 parts of grafted SBS modifier, 1.7 parts of 4-aminobenzothiophene, 1.3 parts of 3 parts of diaminobenzamide and 3 parts of 3-hydroxyl-5-methoxyflavone, keep the reaction temperature at 190°C, stir for 0.5h, mix the raw materials evenly, grind in the colloid mill for 1h, stop the colloid mill, Maintain the reaction temperature, continue to stir for 3 hours, then add 2 parts of dextran to it under low-speed stirring, and after stirring evenly, the grafted SBS modified asphalt is obtained.

Embodiment 3

[0040] A kind of grafted SBS modified asphalt, prepared by the following steps: heating 95 parts of base asphalt to 170 °C, adding 4 parts of grafted SBS modifier, 1.5 parts of 4-aminobenzothiophene, 1.5 parts of base asphalt 2 parts of diaminobenzamide and 2 parts of 7-methoxyflavanol, keep the reaction temperature at 180°C, stir for 0.5h, mix the raw materials evenly, grind them in the colloid mill for 0.7h, stop the colloid mill, keep Reaction temperature, continue to stir for 2.5 hours, then add 1.5 parts of arabinoxylan to it under low-speed stirring, and after stirring evenly, the grafted SBS modified asphalt is obtained.

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Abstract

The invention belongs to the technical field of modified asphalt and discloses an SBS (Styrene-Butadiene-Styrene) modified asphalt mixture and a preparation method thereof. The modified asphalt mixture comprises the following components in parts by weight: 15-30 parts of grafted SBS modified asphalt, 2-3 parts of hydroxyapatite, 3-5 parts of Manila hemp, 3-6 parts of furfural extract oil and 100-150 parts of broken stones. Based on the effect of the grafted SBS modified asphalt and the effects of the hydroxyapatite and Manila hemp, the SBS modified asphalt mixture disclosed by the invention has excellent aging resistance, strong deformation resistance and high-temperature stability.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, and in particular relates to a SBS modified asphalt mixture and a preparation method thereof. Background technique [0002] Asphalt mixture is the material used to build asphalt pavement, and asphalt pavement refers to various types of road surfaces that are paved with road asphalt materials mixed with mineral materials. Asphalt pavement has the advantages of comfortable driving, low energy consumption and easy maintenance, etc., and its proportion in road construction is getting higher and higher. However, ordinary asphalt has poor high and low temperature performance, and the road paved with it is prone to defects such as ruts and potholes, and has a short service life, especially under heavy traffic conditions. To solve this problem, polymers are usually used to modify asphalt, so as to improve the road performance of asphalt mixture. Among them, styrene-butadiene-styrene triblock c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2201/50C04B2111/0075C04B14/366C04B18/248C04B24/08C04B18/12
Inventor 宗博
Owner 湖北津泰环保科技有限公司
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