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Modified asphalt mixture

A technology of modified asphalt and mixture, which is applied to building insulation materials, building components, buildings, etc., can solve the problems of poor adhesion and inability to store for a long time, and achieve the effects of low cost, stable physical and chemical properties, and convenient transportation and storage

Active Publication Date: 2017-08-18
北京紫瑞天成科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides a solid SBS modified asphalt mixture modifier and a preparation method thereof without using a wet method to prepare modified asphalt mixture. The solid SBS modified asphalt mixture provided by the present invention The permanent asphalt mixture modifier can be directly added into the mixing plant and mixed with base asphalt and aggregate mineral powder to prepare modified asphalt mixture, which avoids the need for processing and modification of SBS modified asphalt prepared by the existing wet method. The shortcomings of non-destructive devices, heat sources and high temperature conditions, special heat preservation and stirring devices to prevent segregation of processed products, and inability to store for a long time. Moreover, the modifier provided by the invention can be quickly melted when added to the mixing building, forming a dense layer on the surface of the stone. The thin film makes the SBS modified asphalt and the non-acidic surface of the stone contact and fuse, and solves the technical problem of poor adhesion between the acidic stone and the SBS modified asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] 1. Ratio preparation

[0088] The modified basic material, the first additive and the second additive are prepared according to the following weight ratio: high-quality asphalt 55; natural rubber latex 11; synthetic rubber 11; sodium thiosulfate 3.5; triethanolamine 5; calcium propionate 2; Aluminum 3; Butyl stearic acid 3.5; Cellulose 2; Sodium polycyclic aromatic hydrocarbon sulfonate 1.5; Acrylic acid copolymer 3.5; Sodium sulfoaluminate 3; Sodium lignosulfonate 3; Resin 3;

[0089] 2. Preheating treatment

[0090] The weighed high-quality asphalt, natural rubber latex, synthetic rubber, sodium thiosulfate, triethanolamine, calcium propionate, aluminum chloride, cellulose, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic acid copolymer, sodium sulfoaluminate , Butyl stearic acid is added to the pre-heating reactor, and the temperature of the pre-heating reactor is heated for 30 minutes, so that the temperature of the material in the reactor reaches 175-180 ...

Embodiment 2

[0096] 1. Ratio preparation

[0097] The modified basic material, the first additive and the second additive are prepared according to the following weight ratio: high-quality asphalt 85; natural rubber latex 8; synthetic rubber 8; sodium thiosulfate 2.5; triethanolamine 2; calcium propionate 2; Aluminum 6; Butyl stearic acid 2.5; Cellulose 5; Sodium polycyclic aromatic hydrocarbon sulfonate 3.5; Acrylic acid copolymer 1.5; Sodium sulfoaluminate 1.5; Sodium lignosulfonate 6; Resin 6; Carbon black 0.5.

[0098] 2. Preheating treatment

[0099] The weighed high-quality asphalt, natural rubber latex, synthetic rubber, sodium thiosulfate, triethanolamine, calcium propionate, aluminum chloride, cellulose, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic acid copolymer, sodium sulfoaluminate , Butyl stearic acid is added to the pre-heating reactor, and the temperature of the pre-heating reactor is heated for 30 minutes, so that the temperature of the material in the reacto...

Embodiment 3

[0105] 1. Ratio preparation

[0106] The modified basic material, the first additive and the second additive are prepared according to the following weight ratio: high-quality asphalt 62; natural rubber latex 9; synthetic rubber 10; sodium thiosulfate 3; triethanolamine 3; calcium propionate 3; Aluminum 4; Butyl stearic acid 3; Cellulose 3; Sodium polycyclic aromatic hydrocarbon sulfonate 1.9; Acrylic acid copolymer 2.2; Sodium sulfoaluminate 2.3; Sodium lignosulfonate 4.1; Resin 5.2; Carbon black 0.9.

[0107] 2. Preheating treatment

[0108] The weighed high-quality asphalt, natural rubber latex, synthetic rubber, sodium thiosulfate, triethanolamine, calcium propionate, aluminum chloride, cellulose, polycyclic aromatic hydrocarbon sodium sulfonate, acrylic acid copolymer, sodium sulfoaluminate , Butyl stearic acid is added to the pre-heating reactor, and the temperature of the pre-heating reactor is heated for 25 minutes, so that the temperature of the material in the react...

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PUM

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Abstract

The invention discloses a modified asphalt mixture, relating to the fields of chemistry and chemical engineering. The modified asphalt mixture contains matrix asphalt, an aggregate, mineral powder and a solid SBS modified asphalt mixture modifying agent, wherein the solid SBS modified asphalt mixture modifying agent can form a compact film on the surfaces of the aggregate and the mineral powder after being smelted, and the addition amount of the solid SBS modified asphalt mixture modifying agent is 5wt%-25wt% of the matrix asphalt. The modified asphalt mixture provided by the invention is strong in stripping resistance, easy to prepare and low in cost.

Description

technical field [0001] The invention relates to the field of chemistry and chemical engineering, in particular to a solid SBS modified asphalt modifier and a preparation method thereof Background technique [0002] SBS modified asphalt is based on base asphalt, and a certain proportion of SBS modifier is added to make SBS evenly dispersed in the asphalt by shearing, stirring and other methods. At the same time, a certain proportion of exclusive stabilizer is added to form an SBS blend. Material, using the good physical properties of SBS to modify asphalt. [0003] At present, the use of modified asphalt is the main means to fundamentally solve the problems of high and low temperature stability and local damage of asphalt pavement. However, when processing SBS modified asphalt products in the prior art, wet addition is generally adopted, that is, the asphalt is modified first, and then the modified asphalt is used to prepare modified asphalt mixture. Therefore, it is necessa...

Claims

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Application Information

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IPC IPC(8): C04B26/26C08L95/00C08L7/02C08L21/00C08L33/00C08L97/00C08K13/02C08K3/30C08K5/098C08K3/16C08K5/42C08K5/09C08K3/04
CPCC04B26/26C08L95/00C08L2205/035C04B14/02C04B24/36C04B24/28C04B22/142C04B24/122C04B24/04C04B22/12C04B24/08C04B16/02C04B24/20C04B24/26C04B24/18C04B24/24C04B22/02C08L7/02C08L21/00C08L33/00C08L97/005C08K13/02C08K3/30C08K5/098C08K2003/164C08K5/42C08K5/09C08K3/04
Inventor 梁清源于小桥
Owner 北京紫瑞天成科技有限公司
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