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A kind of modified asphalt material and preparation method thereof

A modified asphalt and modified technology, applied in building thermal insulation materials, building components, buildings, etc., can solve problems such as poor performance of modified asphalt materials

Active Publication Date: 2021-06-22
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a modified asphalt material and its preparation method to solve the problem of poor performance of existing modified asphalt materials

Method used

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  • A kind of modified asphalt material and preparation method thereof
  • A kind of modified asphalt material and preparation method thereof
  • A kind of modified asphalt material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] First, prepare KH-550 modified stone powder for later use.

[0034] Heat stone powder with a particle size of less than 0.2mm to 200°C, add KH-550, stir at a speed of 70rpm, and stir for 0.5h. The weight ratio of stone powder to KH-550 is 20, and it is used after drying.

[0035] Second, prepare the modified asphalt material:

[0036] (1) Take raw materials by weight, 100 parts of matrix pitch, 5 parts of rock pitch, 5 parts of epoxy resin, 24 parts of rubber powder, for subsequent use;

[0037] (2) Heat the base asphalt to a fluid state, raise the temperature to 180°C, and maintain a constant temperature state;

[0038] (3) Add rock asphalt, rubber powder, and epoxy resin to the base asphalt in a constant temperature state, keep the temperature of the system constant, and perform high-speed shearing with a shearing speed of 4000r / min and a shearing time of 2h to obtain a shear mixture material;

[0039] (4) Add 10 parts of KH-550 modified stone powder to the shearin...

Embodiment 2

[0041] First, prepare KH-550 modified stone powder for later use.

[0042] Heat stone powder with particle size less than 0.2mm to 100°C, add KH-550, stirring speed 40rpm, stirring time 1h, weight ratio of stone powder to KH-550 is 15, and use after drying.

[0043] Second, prepare the modified asphalt material:

[0044] (1) raw materials are taken by weight, 140 parts of matrix pitch, 18 parts of rock pitch, 10 parts of epoxy resin, 30 parts of rubber, for subsequent use;

[0045] (2) Heat the base asphalt to a fluid state, raise the temperature to 190°C, and maintain a constant temperature state;

[0046] (3) Add rock asphalt, rubber powder, and epoxy resin to the base asphalt in a constant temperature state, keep the temperature of the system constant, and perform high-speed shearing with a shearing speed of 4000r / min and a shearing time of 2h to obtain a shear mixture material;

[0047] (4) Add 30 parts of KH-550 modified stone powder to the shear mixture, keep the temp...

Embodiment 3

[0049] First, prepare KH-550 modified stone powder for later use.

[0050] Heat stone powder with a particle size of less than 0.2mm to 150°C, add KH-550, stir at a speed of 70rpm, and stir for 1h. The weight ratio of stone powder to KH-550 is 20, and it is used after drying.

[0051] Second, prepare the modified asphalt material:

[0052] (1) Take raw materials by weight, 130 parts of matrix pitch, 12 parts of rock pitch, 6 parts of epoxy resin, 24 parts of rubber powder, for subsequent use;

[0053] (2) Heat the base asphalt to a fluid state, raise the temperature to 180°C, and maintain a constant temperature state;

[0054] (3) Add rock asphalt, rubber powder, and epoxy resin to the base asphalt in a constant temperature state, keep the temperature of the system constant, and perform high-speed shearing with a shearing speed of 4000r / min and a shearing time of 2h to obtain a shear mixture material;

[0055] (4) Add 30 parts of KH-550 modified stone powder to the shear mi...

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Abstract

The invention discloses a modified asphalt material, which is composed of the following components in parts by weight: 100-150 parts of base asphalt, 3-20 parts of rock asphalt, 4-50 parts of KH-550 modified stone powder, and epoxy resin 5-10 parts, 20-30 parts of rubber powder, wherein the particle size of stone powder is less than 0.2mm, KH-550 modified stone powder is prepared by mixing KH-550 with high-temperature treated stone powder. The obtained modified asphalt material has excellent high temperature performance.

Description

technical field [0001] The invention relates to the technical field of road building materials, in particular to a modified asphalt material with good high temperature stability and a preparation method thereof. [0002] technical background [0003] As an organic gelling material, asphalt has good deformation ability and strong bonding force with mineral materials, so it is widely used in road construction and bridge deck paving and other projects. Petroleum asphalt is mainly used in the field of road engineering, and its technical properties mainly include viscosity, plasticity, temperature sensitivity and durability, etc. The performance of a type of asphalt is mainly evaluated comprehensively from the above aspects; or at the same level The asphalt performance can be evaluated by the performance of asphalt mixture with different asphalt composition. However, usually the asphalt produced by petroleum processing plants cannot fully meet these requirements, or due to the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L63/00C08L21/00C08K9/06C08K3/26
CPCC08K2003/265C08L95/00C08L2201/08C08L2205/025C08L2205/035C08L63/00C08L21/00C08K9/06C08K3/26
Inventor 黄拓陈杰彭幸海唐耀张洪刚刘宏富谢军
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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