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Natural compound modified asphalt and preparation method thereof

A technology of composite modified asphalt and production method, which is applied to building components, building thermal insulation materials, buildings, etc., can solve the problems of affecting the water stability of the road surface, no great improvement in spalling resistance, spalling and detachment of asphalt and stone materials, etc. Achieve the effect of improving weather resistance and UV resistance, increasing durability, and reducing usage

Active Publication Date: 2009-06-03
石家庄都市明珠科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of composite modified asphalt has the characteristics of anti-deformation at high temperature and anti-cracking at low temperature, but its anti-stripping property has not been greatly improved. When it is used with acidic stone, it is necessary to add anti-stripping agent to improve the water stability of the road surface.
When no anti-stripping agent is added, asphalt and stones are prone to peeling and detachment, which will affect the water stability of the road surface and cause early damage to the road surface

Method used

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  • Natural compound modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: according to figure 1 The flow shown produces,

[0027] 1. Heat 7 tons (t) of AH-90 base asphalt in the base storage tank to 140°C to melt the base asphalt. The density of the base asphalt at 140°C is 1092Kg / m 3 .

[0028] 2. Put 3t of lake bitumen into the melting tank for complete melting at 195°C, and keep the temperature in the melting tank at 195°C after complete melting.

[0029] 3. Pump the base bitumen from the base storage tank into the mixing tank; then use the pump to drive the TLA lake bitumen from the melting tank into the mixing tank.

[0030] 4. Turn on the stirrer of the stirring tank and stir for 40 minutes while maintaining the temperature in the stirring tank at 165°C. While stirring, slowly and evenly add 4 tons of rock asphalt powder into the mixing tank to fully melt the rock asphalt powder.

[0031] 5. After the mixing is completed, TLA lake asphalt, rock asphalt and matrix asphalt are evenly mixed to become qualified natural com...

Embodiment 2

[0033] 1. Heat 9 tons of AH-70 base asphalt in the base storage tank to 130°C to melt the base asphalt.

[0034] 2. Put 1t of lake asphalt into the melting tank for complete melting at 195°C, and keep the temperature inside the melting tank at 195°C after complete melting.

[0035] 3. Pump the base bitumen from the base storage tank into the mixing tank; then use the pump to drive the TLA lake bitumen from the melting tank into the mixing tank.

[0036] 4. Turn on the stirrer of the stirring tank and stir for 20 minutes, while the temperature in the stirring tank is kept at 165°C. While stirring, slowly and evenly add 1t of rock asphalt powder into the mixing tank to fully melt the rock asphalt powder.

[0037] 5. After the mixing is completed, TLA lake asphalt, rock asphalt and matrix asphalt are evenly mixed to become qualified natural composite modified asphalt.

Embodiment 3

[0039] 1. Heat 3 tons of AH-110 base asphalt in the base storage tank to 140°C to melt the base asphalt.

[0040] 2. Put 7t of lake bitumen into the melting tank for complete melting at 195°C, and keep the temperature in the melting tank at 195°C after complete melting.

[0041] 3. Pump the base bitumen from the base storage tank into the mixing tank; then use the pump to drive the TLA lake bitumen from the melting tank into the mixing tank.

[0042] 4. Turn on the stirrer of the stirring tank and stir for 50 minutes, while the temperature in the stirring tank is kept at 170°C. While stirring, slowly and evenly add 3 tons of rock asphalt powder into the mixing tank to fully melt the rock asphalt powder.

[0043]5. After the mixing is completed, TLA lake asphalt, rock asphalt and matrix asphalt are evenly mixed to become qualified natural composite modified asphalt.

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Abstract

The invention discloses natural compound modified asphalt and a preparation method thereof. The modified asphalt is prepared by utilizing the following materials according to the following weight parts: 30 parts to 95 parts of basic asphalt, 5 parts to 70 parts of Trinidad lake asphalt (TLA) and 1 part to 40 parts of rock asphalt. The method comprises the technical processes of: melting the basic asphalt at a temperature of 120 DEG C to 140 DEG C; melting the TLA at a temperature of 165 DEG C to 195 DEG C; and mixing the melted basic asphalt and the melted TLA and stirring the mixture of the basic asphalt and the Trinidad lake asphalt for 10 min to 50 min at ta temperature of 165 DEG C to 195 DEG C, and adding rock asphalt powder in the stirring process so as to obtain the finished product. The modified asphalt can improve temperature sensibility, increase the stability, deformation resistance, toughness, cracking resistance performance, anti-fatigue and cracking-resistant strength and durability, prolong the service life of the road and reduce the time for maintenance and overhaul and the maintenance cost; simultaneously the modified asphalt has excellent environment-friendly performance and can reduce pollution generated in the production process of a polymer modifier.

Description

technical field [0001] The invention relates to a modified asphalt and a production method thereof, in particular to a natural composite modified asphalt and a production method thereof. Background technique [0002] With the large-scale development of highway construction, the modification technology of road petroleum asphalt, especially the modified asphalt used in the pavement surface layer, has been greatly developed. The purpose of using modified asphalt is not only to improve the mechanical properties of pavement asphalt mixture, but also to improve the anti-aging performance of asphalt. At present, the products that can meet this special requirement are SBS and TLA lake asphalt composite modified asphalt. [0003] TLA lake asphalt is produced in the asphalt lake of the Republic of Trinidad and Tobago in South America. It has zero wax content, high temperature resistance, aging resistance, low temperature resistance, good waterproof performance, noise reduction, long ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08J3/20C04B26/26
Inventor 谢亚辉
Owner 石家庄都市明珠科技有限公司
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