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SBR modified emulsified asphalt and preparation method thereof

A technology for emulsified asphalt and modification, applied in building components, building insulation materials, buildings, etc., can solve the problems of strict production equipment and process requirements, poor high-temperature performance, general low-temperature performance, etc., and achieve good low-temperature crack resistance. performance, improved high temperature performance, increased viscosity

Active Publication Date: 2021-10-26
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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AI Technical Summary

Problems solved by technology

SBS modified emulsified asphalt has the advantages of high temperature resistance and fatigue resistance, but the low temperature performance is average, the requirements for production equipment and technology are strict, and the cost performance is poor; SBR modified emulsified asphalt has a simple production process and has the advantages of low temperature crack resistance. But high temperature performance is not good

Method used

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  • SBR modified emulsified asphalt and preparation method thereof
  • SBR modified emulsified asphalt and preparation method thereof
  • SBR modified emulsified asphalt and preparation method thereof

Examples

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preparation example Construction

[0035] The preparation method of SBR modified emulsified asphalt of the present invention, as figure 1 As shown, follow the steps below:

[0036] S1, weigh 66-69 parts of base asphalt according to the following parts by mass, 2-3 parts of CMK-50 cationic emulsifier, 3-4 parts of SBR styrene-butadiene latex, 0.2-0.4 parts of carboxymethyl cellulose (CMC), Anhydrous Calcium Chloride (CaCl 2 ) 0.2-0.4 parts, water 29-31 parts.

[0037] S2, heat the weighed base asphalt to a hot-melt state of 130-140°C, pour it into the asphalt tank, set the colloid mill speed to 9000-10000r / min, open the internal circulation system of the asphalt tank, and disperse the hot-melt asphalt into Homogeneous body; last for 25-35 minutes, the function is to disperse the hot-melt asphalt into a homogeneous body, which is beneficial to the emulsification effect.

[0038] S3, preparation of soap solution: heat water to 85-90°C, add carboxymethyl cellulose, stir with glass rod until carboxymethyl cellulo...

Embodiment 1

[0043] Example 1, SBR modified emulsified asphalt is composed of the following parts by mass: 66 parts of 70# heavy traffic asphalt, 3 parts of CMK-50 cationic emulsifier, 4 parts of SBR styrene-butadiene latex, 0.2 parts of carboxymethyl cellulose, no 0.4 parts of calcium chloride water, 31 parts of water.

Embodiment 2

[0044] Example 2, SBR modified emulsified asphalt is composed of the following parts by mass: 69 parts of 70# heavy traffic asphalt, 2 parts of CMK-50 cationic emulsifier, 3 parts of SBR styrene-butadiene latex, 0.4 parts of carboxymethyl cellulose, no 0.2 parts of calcium chloride water, 29 parts of water.

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Abstract

The invention discloses an SBR modified emulsified asphalt and a preparation method thereof. The SBR modified emulsified asphalt is composed of the following parts by mass: 66-69 parts of base asphalt, 2-3 parts of cationic emulsifier, and 3-3 parts of SBR styrene-butadiene latex 4 parts, 0.2-0.4 parts of carboxymethyl cellulose, 0.2-0.4 parts of anhydrous calcium chloride, 29-31 parts of water. The SBR modified emulsified asphalt of the invention has high storage stability, enhanced adhesion between asphalt and aggregate, good low-temperature ductility and excellent low-temperature crack resistance, and solves the problems existing in the prior art.

Description

technical field [0001] The invention belongs to the technical field of highway engineering, and relates to an SBR modified emulsified asphalt and a preparation method thereof. Background technique [0002] In my country, modified emulsified asphalt is widely used in road surface sealant mixture. Currently, the commonly used modified emulsified asphalt in sealant mixture includes SBS modified emulsified asphalt and SBR modified emulsified asphalt. SBS modified emulsified asphalt has the advantages of high temperature resistance and fatigue resistance, but the low temperature performance is average, the requirements for production equipment and technology are strict, and the cost performance is poor; SBR modified emulsified asphalt has a simple production process and has the advantages of low temperature crack resistance. But the high temperature performance is not good. How to obtain a modified emulsified asphalt with simple production process and good high and low temperatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L9/08C08L1/28C08K3/16
Inventor 孙志林马帅杰
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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