Warm-mix bitumen mixture and preparation therof

A technology for warm mix asphalt and mixture, which is applied in the field of warm mix asphalt mixture and the preparation of warm mix asphalt mixture, achieves the effects of energy saving, stable storage and favorable promotion

Active Publication Date: 2008-11-12
何子豪 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is in order to overcome above-mentioned technical defect, reduce the consumption of fuel, reduce CO 2 The emission of harmful substances such as dust and dust, and the simplification of the preparation procedure provide a kind of warm asphalt mixture and its preparation method

Method used

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  • Warm-mix bitumen mixture and preparation therof
  • Warm-mix bitumen mixture and preparation therof
  • Warm-mix bitumen mixture and preparation therof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Put the mineral material heated to 145°C into the mixing tank, then put in Shell AH-70# hot asphalt at 130°C, mix for 20 seconds, then put in the warm mix asphalt modifier through the observation window, and mix for 30 seconds to make The warm-mix asphalt mixture is obtained, and the weight proportions of the components are as follows: 2-5% of asphalt; 90-96% of mineral material; and 2-5% of warm-mix asphalt modifier.

[0024] Among them, the warm-mix asphalt modifier adopts the warm-mix asphalt modifier of the Sasobit brand of German Schumann-Sasol Company.

[0025] The comparison between the rutting dynamic stability index of warm-mix asphalt mixture and the rutting dynamic stability index of hot-mix asphalt mixture is as follows:

[0026]

[0027] It can be seen from the above table that the deformation of AC-13 warm mix asphalt mixture is 1.767mm at 45min and the deformation at 60min is 1.911mm, both of which are smaller than the deformation of AC-13 hot mix asph...

Embodiment 2

[0029] Use SK AH-70# asphalt to replace Shell AH-70# asphalt, and the rest of the raw materials, proportioning and preparation process are the same as in Example 1 to prepare warm mix asphalt mixture.

[0030] The comparison between the rutting dynamic stability index of warm-mix asphalt mixture and the rutting dynamic stability index of hot-mix asphalt mixture is as follows:

[0031]

[0032] It can be seen from the above table that the deformation of AC-13 warm mix asphalt mixture is 1.167mm in 45min and the deformation in 60min is 1.911mm, both of which are smaller than the deformation of AC-13 hot mix asphalt mixture in 45min of 3.917mm and the deformation in 60min 4.443mm; the rutting dynamic stability of AC-13 warm mix asphalt mixture is 5523 times / mm, which is much higher than the rutting dynamic stability of AC-13 hot mix asphalt mixture which is 1197 times / mm.

Embodiment 3

[0034] Esso AH-70# asphalt was used to replace Shell AH-70# asphalt, and the rest of the raw materials, proportioning and preparation process were the same as in Example 1 to prepare warm mix asphalt mixture.

[0035] The comparison between the rutting dynamic stability index of warm-mix asphalt mixture and the rutting dynamic stability index of hot-mix asphalt mixture is as follows:

[0036]

[0037] It can be seen from the above table that the deformation of AC-13 warm mix asphalt mixture is 1.583mm in 45min and the deformation in 60min is 1.679mm, both of which are smaller than the deformation of AC-13 hot mix asphalt mixture in 45min of 3.917mm and the deformation in 60min 4.443mm; the rutting dynamic stability of AC-13 warm mix asphalt mixture is 6591 times / mm, which is much higher than the rutting dynamic stability of AC-13 hot mix asphalt mixture which is 1197 times / mm.

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Abstract

The invention discloses a warm-mix asphalt mixture and a method for preparing the same. The warm-mix asphalt mixture comprises the following compositions by weight percent: 90 to 96 percent of mineral aggregate, 2 to 5 percent of asphalt and 2 to 5 percent of warm-mix asphalt modifying agent. The method comprises the following steps of: adding the mineral aggregate which is heated up to a temperature of between 140 and 155 DEG C into a mixing cylinder; adding heat asphalt with a temperature between 130 and 140 DEG C according to a proportion to stir for 20 to 30 seconds; and adding the warm-mix asphalt modifying agent to stir for 20 to 30 seconds to acquire the warm-mix asphalt mixture. The warm-mix asphalt mixture can be used for paving a high-grade pavement, has the characteristics of excellent pavement performance, simple technology, low requirement of manufacturing equipment, convenient use, popularization facilitation, greatly saved construction cost, great economic benefit and social benefit, green ecology and sustainable development accordance.

Description

technical field [0001] The invention relates to an asphalt mixture, in particular to a warm asphalt mixture. [0002] The invention also relates to a preparation method of warm asphalt mixture. Background technique [0003] Hot mix asphalt mixture (HMA for short) is widely used in road construction due to its excellent performance. ℃), high fuel consumption, CO 2 , Dust and other harmful substances are discharged in a large amount. As a signatory of the "Kyoto Protocol", my country will undertake a huge amount of CO2 reduction in the future. 2 Emissions task and huge test, reduce air pollution, reduce CO 2 Emissions and energy conservation are major issues related to my country's national economy and people's livelihood. Therefore, the development of hot mix asphalt is limited. [0004] Warm Mix Asphalt (WMA for short) is a high-energy-saving and low-emission environment-friendly material, which was jointly developed by Shell of the United States and Kolo Veidekke of N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K3/00C08J3/00E01C7/18
CPCY02A30/30
Inventor 何唯平赵欣平高云龙
Owner 何子豪
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