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Preparation method of low-carbon asphalt mixture

A mixture and carbon asphalt technology, which is applied in the field of low-carbon asphalt mixture preparation, can solve the problems of reducing carbon dioxide, lowering asphalt mixture mixing temperature and paving temperature, and large emissions

Active Publication Date: 2011-09-14
SHANGHAI TONGJI CONSTR QUALITY INSPECTION STATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the hot mix asphalt carbon dioxide (CO 2 ) discharge amount is big, consumes many deficiencies in energy, the purpose of the present invention is to provide a kind of preparation method of low-carbon asphalt mixture, it is by directly adding low-carbon agent in asphalt or adding low-carbon agent in asphalt mixture mixing process agent, thereby reducing carbon dioxide (CO 2 ) emission, which reduces the mixing temperature and paving temperature of asphalt mixture, reduces fuel consumption per unit output, and reduces energy consumption

Method used

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  • Preparation method of low-carbon asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Preparation of low-carbon asphalt mixture AC-13 (without adding fiber stabilizer)

[0035] (1) Testing of the performance of low-carbon agent modified asphalt, selection of aggregates and gradation

[0036] In this example, the content of low carbon agent is 3%, and the binder is 70# base asphalt. The required 70# base asphalt is required to meet the relevant requirements of "Technical Specification for Highway Asphalt Pavement Construction" (JTG F40-2004). First, the basic properties of the modified asphalt mixed with low-carbon agent were tested, and the test results are shown in Table 1.

[0037] Table 1 Basic performance test results of 70# base asphalt + 3% low carbon agent

[0038]

[0039]

[0040] The coarse aggregate used is basalt, and the fine aggregate is limestone, all of which meet the relevant requirements of "Technical Specification for Highway Asphalt Pavement Construction" (JTG F40-2004). For this example, the gradation used is shown...

Embodiment 2

[0063] Example 2: Preparation of Low Carbon Asphalt Mixture SMA-13 ​​(Adding Fiber Stabilizer)

[0064] (1) Testing of the performance of low-carbon agent-modified asphalt, selection of fiber stabilizers, aggregates and gradation

[0065] In this example, the content of low-carbon agent is 5%, and the binder is SBS modified asphalt. The selected SBS modified asphalt is required to meet the relevant requirements of "Technical Specification for Highway Asphalt Pavement Construction" (JTG F40-2004). First, the basic properties of the modified asphalt mixed with low-carbon agent were tested, and the test results are shown in Table 6.

[0066] Table 6 Basic performance test results of SBS modified asphalt + 5% low carbon agent

[0067]

[0068]

[0069] The coarse aggregate used is diabase, the fine aggregate is limestone, and the filler is ore powder obtained by grinding limestone material. After inspection, they all meet the relevant requirements of "Technical Specificati...

Embodiment 3

[0082] Example 3: Preparation of low carbon asphalt mixture OGFC-13

[0083] (1) Testing of the performance of low-carbon agent modified asphalt, selection of aggregates and gradation

[0084] In this example, the content of low-carbon agent is 6.5%, and the binder is 70# base asphalt. The required 70# base asphalt is required to meet the relevant requirements of "Technical Specification for Highway Asphalt Pavement Construction" (JTG F40-2004). First, the basic properties of the modified asphalt mixed with low-carbon agent were tested, and the test results are shown in Table 11.

[0085] Table 11 Test results of basic performance of 70# base asphalt + 6.5% low carbon agent

[0086]

[0087] The target void ratio of the drainage road surface is generally set to 18% to 25%, and the target void ratio of this example is set to 20%. The purpose of selecting the preliminary test grading is to determine a reasonable grading that meets the target porosity under the preliminary t...

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Abstract

The invention belongs to the technical field of highways and urban roads, and in particular relates to a preparation method of a low-carbon asphalt mixture. The preparation method comprises the concrete step of directly adding a low-carbon agent into modified asphalt or substrate asphalt, which reduces the emission of carbon dioxide, the mixing temperature and the paving temperature of the asphalt mixture and the consumption of energy sources. The mixing temperature is generally 110-140DEG C and the compaction temperature is generally 80-100DEG C; and compared with the hot mixing asphalt mixture, the emission of the carbon dioxide is reduced by over 45 percent and the consumption of the energy sources can be reduced by 12-18 percent. The preparation method can play roles of reducing the emission of the carbon dioxide and saving the energy sources, is a preparation method of the asphalt mixture with greenness, environmental protection and energy saving and can be applied to paving the urban roads, various grades of highways and other pavement engineering.

Description

technical field [0001] The invention belongs to the technical field of highways and urban roads, and particularly relates to a preparation method of a low-carbon asphalt mixture. Background technique [0002] At present, air pollution and energy shortage are common challenges faced by mankind. Climate scientists say the world must stop increasing greenhouse gas emissions and start reducing them between 2015 and 2020, as scientists predict that global greenhouse gas emissions reductions will need to reach 20% by 2050 if global average temperatures are to be prevented from rising by another 2°C. 80% of 1990 levels. How to protect the living environment and save natural resources while developing the economy has become a problem faced by all countries in the world. As early as September 8, 2007, Chinese President Hu Jintao, at the 15th Asia-Pacific Economic Cooperation (APEC) leaders' meeting, clearly advocated "development of a low-carbon economy" in a highly responsible att...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B1/00
Inventor 叶奋周基钊武金婷周孔
Owner SHANGHAI TONGJI CONSTR QUALITY INSPECTION STATION
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