Warm-mix modified asphalt and method for preparing asphalt mixture by using same

A modified asphalt and warm mix technology, which is applied in the preparation of warm asphalt mixture and in the field of warm mix asphalt mixture, can solve the problems of high energy consumption, environmental pollution, low mixing, paving, compaction temperature, etc., to achieve Reduce construction temperature, reduce environmental damage, and prolong the effect of laying season

Inactive Publication Date: 2012-06-20
JIANGYIN TAIFU ASPHALTUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the defects in the prior art, to provide an environmentally friendly warm-mix modified asphalt and a method for preparing asphalt mixture with warm-mix modified asphalt, the warm-mix modified asphalt and its mixing Compared with traditional hot-mix asphalt mixture, the temperature of mixing, paving and compaction is lower; it can effectively retain the original performance of hot-mix asphalt mixture and overcome the problems of environmental pollution, high energy consumption, and aging of asphalt

Method used

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  • Warm-mix modified asphalt and method for preparing asphalt mixture by using same

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Embodiment 1

[0027] The invention is a kind of warm-mix modified asphalt, which includes base asphalt and composite modified cooling agent, the mixing weight of the composite modifier is 5% of the weight of the base asphalt, and the composite modifier is polyolefin cooling agent.

[0028] Among them, the preferred embodiment is that the polyolefin cooling agent is a single polymer or a copolymer of α-olefin and cycloolefin.

[0029]A further preferred embodiment is that the α-olefin includes any one of ethylene, propylene, butene, pentene, hexene, octene and 4-methyl-1-pentene or any combination thereof.

[0030] A further preferred embodiment also includes that the cycloolefin copolymer is a styrene-butadiene block copolymer.

[0031] A method for preparing asphalt mixture with warm-mixed modified asphalt, said method comprising the following steps:

[0032] The first step, heating the base asphalt: heating and dehydrating the base asphalt, and heating to 110 ° C ~ 130 ° C;

[0033] Th...

Embodiment 2

[0040] The invention is a kind of warm-mix modified asphalt, which comprises base asphalt and composite modified cooling agent, the blending weight of the composite modifier is 4% of the weight of the base asphalt, and the composite modifier is polyolefin cooling agent.

[0041] Among them, the preferred embodiment is that the polyolefin cooling agent is a single polymer or a copolymer of α-olefin and cycloolefin.

[0042] A further preferred embodiment is that the α-olefin includes any one of ethylene, propylene, butene, pentene, hexene, octene and 4-methyl-1-pentene or any combination thereof.

[0043] A further preferred embodiment also includes that the cycloolefin copolymer is a styrene-butadiene block copolymer.

[0044] A method for preparing asphalt mixture with warm-mixed modified asphalt, said method comprising the following steps:

[0045] The first step, heating the base asphalt: heating and dehydrating the base asphalt, and heating to 110 ° C ~ 130 ° C;

[0046...

Embodiment 3

[0054] The invention is a kind of warm-mix modified asphalt, which includes base asphalt and composite modified cooling agent, the mixing weight of the composite modifier is 3.5% of the weight of the base asphalt, and the composite modifier is polyolefin cooling agent.

[0055] Among them, the preferred embodiment is that the polyolefin cooling agent is a single polymer or a copolymer of α-olefin and cycloolefin.

[0056] A further preferred embodiment is that the α-olefin includes any one of ethylene, propylene, butene, pentene, hexene, octene and 4-methyl-1-pentene or any combination thereof.

[0057] A further preferred embodiment also includes that the cycloolefin copolymer is a styrene-butadiene block copolymer.

[0058] A method for preparing asphalt mixture with warm-mixed modified asphalt, said method comprising the following steps:

[0059] The first step, heating the base asphalt: heating and dehydrating the base asphalt, and heating to 110 ° C ~ 130 ° C;

[0060]...

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Abstract

The invention discloses warm-mix modified asphalt and a method for preparing asphalt mixture by using the same. The warm-mix modified asphalt comprises matrix asphalt and a composite modified cooling agent, the adding weight of the composite modified agent is 3% to 6% of the weight of the matrix asphalt, and the composite modified agent is a polyolefin cooling agent. The method for preparing the asphalt mixture by using the warm-mix modified asphalt includes the following steps: the asphalt is heated to 110 DEG C to 130 DEG C and dehydrated, mineral aggregate is heated, hot mineral aggregate with 85%-90% weight ratio and hot matrix asphalt with 7% to 9% weight ratio are put into a mixing cylinder to be mixed, the mixing time is T1 5 seconds to 30 seconds, the polyolefin cooling agent with the weight occupying 3% to 6% of the weight of the matrix asphalt is added and mixed, the mixing time is T2 2 minutes to 5 minutes, and the mixture of the warm-mix asphalt is obtained. The warm-mix modified asphalt and the mixture of the same have low mixing, paving and compacting temperature, and can effectively retain the original performance of hot mix asphalt mixture while solving the problems of environment pollution, large energy consumption, aging and decline of the asphalt and the like.

Description

technical field [0001] The invention relates to an asphalt mixture, in particular to a warm asphalt mixture. At the same time, it also relates to a preparation method of warm asphalt mixture. Background technique [0002] Warm Mix Asphalt and asphalt mixture (Warm Mix Asphalt, referred to as WMA), is the asphalt that can be mixed and constructed at a relatively low temperature through certain technical measures, while maintaining its performance not lower than that of HMA. Mixture technology, also known as warm mix asphalt technology. [0003] Asphalt mixture warm mixing technology is a revolutionary asphalt paving technology that has been developed rapidly in the past ten years under the background of energy shortage and global warming. With the sharp increase in oil energy consumption, the global climate has warmed significantly. and a growing trend. In such an international environment, the development of warm-mix asphalt technology is like mushrooms, and it has been d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/00C08L53/02C04B26/26
CPCY02A30/30
Inventor 夏咸明
Owner JIANGYIN TAIFU ASPHALTUM
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