Mixed asphalt and method for preparing same

A technology of mixing asphalt and lake asphalt, applied in building components, building insulation materials, buildings, etc., can solve problems such as non-recyclability, weak adhesion, compatibility problems, etc., to save maintenance costs and anti-aging capabilities. Strong, road life extension effect

Inactive Publication Date: 2009-09-16
冯志军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2) Compatibility issues
[0008] 2. Anti-high temperature rutting and low temperature crack resistance can no longer meet the requirements of existing pavement grades
However, due to the current development of road traffic, the increasing traffic flow, and the increasing number of heavy vehicles, SBS modified asphalt can no longer meet the increasingly severe traffic situation, resulting in the decline of road service levels and other defects.
[0010] 3. The problem of anti-aging ability
[0012] 4. Adhesion problem
[0014] 5. Not environmentally friendly, polluting
SBS modified asphalt has a relatively short service life and cannot be recycled, so the excavated asphalt mixture can only be landfilled during road maintenance, polluting the environment
[0016] In summary, the most widely used SBS modified asphalt has defects such as compatibility and compatibility, high temperature rutting and low temperature cracking, aging, weak adhesion and pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The invention is realized by adding a certain proportion of TLA lake asphalt into the base petroleum asphalt.

[0046] The production process of the TLA lake asphalt is as follows: the TLA mixture is excavated from Trinidad Lake, and the weight percentages of its components are: asphalt 52-55%, ash content 35-39%, organic volatile matter 9% ~10%, sent to the nearby factory, put into special production equipment, heated to 150~180℃ to evaporate the water, sieved the melted TLA mixture through a fine sieve to remove all kinds of coarse sundries, after The refined and processed product is called Trinidad Refined Lake Asphalt (abbreviated as Lake Asphalt), or TLA; the refined and melted TLA is put into special fiberboard barrels for packaging, and the TLA can be transported after cooling.

[0047] The density of the lake bitumen produced through the above process is: C1.39-1; the softening point is: 93-99°C;

[0048] The production process of the mixed asphalt is as follow...

Embodiment 2

[0058] The invention is realized by adding a certain proportion of TLA lake asphalt into the base petroleum asphalt.

[0059] The production process of the TLA lake asphalt is as follows: the TLA mixture is excavated from the Trinidad lake, and the weight percentages of its components are asphalt 52%, ash content 39%, organic volatile matter 8%, and sent to nearby Put it into special production equipment, heat it to 160°C to evaporate the water, pass the melted TLA mixture through a fine sieve to remove various coarse impurities, and the refined and processed product is called Trini Refined Lake Asphalt, namely TLA; put the refined and melted TLA into a special fiberboard barrel for packaging, and the TLA can be transported after cooling.

[0060] The density of the lake bitumen produced through the above process is: C1.32; the softening point is: 95°C;

[0061] The production process of the mixed asphalt is as follows:

[0062] Set up a TLA distribution center near new, reb...

Embodiment 3

[0066] The invention is realized by adding a certain proportion of TLA lake asphalt into the base petroleum asphalt.

[0067] The production process of the TLA lake asphalt is as follows: the TLA mixture is excavated from the Trinidad lake, and the weight percentages of its components are 53% asphalt, 37% ash, and 9% volatile organic matter, and send it to nearby Put it into special production equipment, heat it to 150°C to evaporate the water, pass the melted TLA mixture through a fine sieve to remove various coarse impurities, and the refined and processed product is called Trini Refined Lake Asphalt, namely TLA; put the refined and melted TLA into a special fiberboard barrel for packaging, and the TLA can be transported after cooling.

[0068] The density of the lake bitumen produced through the above process is: C1.15; the softening point is: 96°C; the penetration (25°C 100g 1 / 10mm) is: 2.2.

[0069] The production process of the mixed asphalt is as follows:

[0070] Set...

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Abstract

According to the weight percentage, a mixed asphalt comprises the components of 25-75% of lake asphalt and 25-75% of petroleum pitch; wherein the lake asphalt comprises 52-55% of asphaltic bitumen, 35-39% of ash component and 9-10% of organic volatile compound; the preparation method comprises the following steps of 1) rough machining: arranging TLA mixture into special production equipment and heating the TLA mixture to the temperature of 150-180 DEG C so as to evaporate water; 2) finish machining: screening the dissolved TLA mixture by a sieve so as to remove the sundries, finish-machining the TLA mixture as the lake asphalt, namely the TLA; 3) packaging: packaging the TLA into a special fiber can and transporting the TLA after cooling the TLA; 4) delivering and processing: mixing 25-75% (weight percentage) of the TLA lake asphalt into the substrate petroleum pitch and mixing the mixture under the temperature of 150-180 DEG C for 30-70 minutes, thus preparing the mixed asphalt. The mixed asphalt has good miscibility, good high-temperature resistance track and low-temperature anti-cracking performance, anti-ageing performance, strong adhesion and environment-protection performance.

Description

technical field [0001] The invention relates to an asphalt and a preparation method thereof, in particular to a mixed asphalt obtained by modifying common petroleum asphalt with lake asphalt and a preparation method thereof. Background technique [0002] At present, there are many kinds of asphalt, among which the most widely used modified asphalt is SBS modified asphalt. In the prior art, SBS modified asphalt has the following defects. [0003] 1. Compatibility and compatibility between SBS modifier and base petroleum asphalt [0004] 1) Compatibility issues [0005] SBS modified asphalt is a system composed of polymer modifiers uniformly dispersed in the asphalt continuous phase with a certain particle size as a method of dispersion compatibility physics. There is only partial adsorption and compatibility between polymer and asphalt, but not complete melting. This system is a thermodynamically unstable system, and the separation between the two phases is very easy to o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C08L95/00
Inventor 冯志军
Owner 冯志军
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