High-modulus asphalt paving material and preparation method thereof

A technology of asphalt mixture and high modulus, which is applied in the field of asphalt pavement pavement materials, can solve the problems of high cost and high viscosity of the mixture, save pavement materials, reduce the thickness of the asphalt surface layer, and prolong the compaction time Effect

Active Publication Date: 2016-05-25
厦门华特公路沥青技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adopting a special process or factory preparation often requires additional personnel and equipment investment. At the same time, compared with ordinary asphalt, hard asphalt has a higher viscosity under the same temperature conditions, and can only meet its requirements when the heating temperature of ordinary asphalt is higher than that of ordinary asphalt. Requirements for transportation, storage and application, which lead to an increase in the cost of the mixture

Method used

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  • High-modulus asphalt paving material and preparation method thereof
  • High-modulus asphalt paving material and preparation method thereof
  • High-modulus asphalt paving material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Embodiment 1, prepare a kind of high modulus asphalt mixture, the raw material that adopts is: the asphalt is heavy handover No. 70, the RAP material is the milling material of the upper layer in the expressway, the aggregate is high-quality limestone, and the hard granular material is Sinopec Production of hard aggregates, mineral powder is limestone ground fine mineral powder.

[0033] The above raw materials should be made into high modulus asphalt mixture as shown in Table 1:

[0034] Table 1 Composition ratio of high modulus asphalt mixture materials

[0035]

[0036] To prepare the high modulus asphalt mixture shown in Table 1, follow the steps below:

[0037] Step 1: Preheat the double-drum hot recycled asphalt mixing plant to ensure the accuracy of temperature control during production, then put the new aggregate into the first drum, heat the new aggregate to 180°C, and put Put the RAP material into the second drum and heat it to 110°C;

[0038] Step 2: Pe...

Embodiment 2

[0046] Embodiment 2, prepare a kind of high modulus asphalt mixture, the raw material that adopts is identical with embodiment, and the ratio of raw material that adopts is as shown in table 3:

[0047] Table 3 Composition ratio of high modulus asphalt mixture materials

[0048]

[0049] To prepare the high modulus asphalt mixture shown in Table 3, the process steps are basically the same as those in Example 1, and the temperature and time in the process steps have been adjusted accordingly:

[0050] Step 1: Preheat the double-drum hot recycled asphalt mixing plant, put the new aggregate into the first drum and heat it to 190°C, put the RAP material into the second drum and heat it to 120°C;

[0051] Step 2, secondary sieving of the new aggregate in the first drum to obtain the proportioning ratio of the sieved new aggregate material composition as shown in Table 3;

[0052] Step 3, weigh 2300kg of the new aggregate sieved in step 2, put it into the mixing tank, weigh 2450...

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Abstract

The present invention relates to asphalt paving material, and particularly to a high-modulus asphalt mixture and a preparation method thereof. The high-modulus asphalt mixture comprises the following raw materials by weight, 39-65% of a new aggregate, 1-5% of an ore powder, 28-52% of a RAP material, 0.4-1.2% of a hard pellet material, and 3-5% of warm mixing asphalt. The high-modulus asphalt mixture has high modulus, high compactness and durability.

Description

technical field [0001] The invention relates to an asphalt pavement pavement material, in particular to a high-modulus asphalt mixture and a preparation method thereof. Background technique [0002] With the continuous development of the national economy, my country's road construction has developed very rapidly, and people's requirements for road construction have also continued to increase. Road construction and maintenance has become one of the issues that the government and the people pay close attention to. Transportation is an important link that restricts the development of the national economy. The vast majority of roads in our country are still low-grade and poor-quality middle and low-grade road surfaces, so the funds invested in road construction every year can be described as huge. [0003] High modulus asphalt concrete is designed to improve and solve the problems of rutting, hugging, waves and other insufficient high temperature stability during the use of as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B18/16
CPCC04B26/26C04B2111/0075C04B18/16C04B20/0076C04B40/0028C04B40/0082Y02A30/30Y02W30/91
Inventor 马云容蔡智慧胥亮高树丰王笑氚李拥军曾志群蓝志杰朱明
Owner 厦门华特公路沥青技术有限公司
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