Low-carbon tourmalinite modified asphalt and preparation method thereof

A technology of modified asphalt and tourmaline, which is applied in climate change adaptation, building components, building insulation materials, etc., and can solve the problems of high pollution performance, imperfection, high energy consumption of modified asphalt hot mixing, etc.

Active Publication Date: 2012-04-18
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] A technical problem to be solved in the present invention is to overcome the technical problems of high energy consumption, high pollution and imperfect performance of existing modified asphalt hot mixing, and provide a kind

Method used

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  • Low-carbon tourmalinite modified asphalt and preparation method thereof
  • Low-carbon tourmalinite modified asphalt and preparation method thereof
  • Low-carbon tourmalinite modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Taking the production of the product of the present invention with matrix asphalt 100kg as an example, other raw materials used and their mass proportions are:

[0036] Korea SK70# asphalt 100kg

[0037] Tourmaline Negative Ion Powder with Negative Ion Release 5000ions 17kg

[0038] Sodium polyphosphate 0.51kg

[0039] The mass parts proportioning of above-mentioned raw material is:

[0040] Korea SK70# asphalt 100 parts

[0041] Tourmaline Negative Ion Powder with Negative Ion Release 5000ions 17 parts

[0042] Sodium polyphosphate 0.51 parts

[0043] Its preparation method is as follows:

[0044] Heat the base asphalt to 150±5°C, slowly add dry tourmaline negative ion powder to the base asphalt in batches, add sodium polyphosphate, stir manually for 5 minutes at a constant speed, and use a high-speed shearer to stir at 1000 rpm 10 minutes, 4000 rev / min stirring for 30 minutes, 1000 rev / min stirring for 10 minutes, to get rid of air bubbles generated during high-...

Embodiment 2

[0046] Taking the production of the product of the present invention with matrix asphalt 100kg as an example, other raw materials used and their mass proportions are:

[0047] Korea SK70# asphalt 100kg

[0048] Tourmaline negative ion powder with negative ion release 5000ions 20kg

[0049] Sodium polyphosphate 0.6kg

[0050] The proportioning by weight of above-mentioned raw material is:

[0051] Korea SK70# asphalt 100 parts

[0052] 20 parts of tourmaline negative ion powder with negative ion release capacity of 5000ions

[0053] Sodium polyphosphate 0.6 parts

[0054] Its preparation method is identical with embodiment 1.

Embodiment 3

[0056] Taking the production of the product of the present invention with matrix asphalt 100kg as an example, other raw materials used and their mass proportions are:

[0057] Korea SK70# asphalt 100kg

[0058] Tourmaline Negative Ion Powder with Negative Ion Release 5000ions 14kg

[0059] Dispersant 0.42kg

[0060] The proportioning by weight of above-mentioned raw material is:

[0061] Korea SK70# asphalt 100 parts

[0062] Tourmaline Negative Ion Powder with Negative Ion Release 5000ions 14 parts

[0063] Sodium polyphosphate 0.42 parts

[0064] Its preparation method is identical with embodiment 1.

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Abstract

The invention discloses low-carbon tourmalinite modified asphalt. The low-carbon tourmalinite modified asphalt comprises: by mass, 100 parts of base asphalt, 8 to 20 parts of tourmalinite and 0 to 0.6 parts of a dispersing agent. The preparation method comprises the following steps of heating the base asphalt to a temperature of 150+/-5 DEG C, slowly adding the dried tourmalinite into the heated base asphalt in batches, adding the dispersing agent into the mixture, manually stirring at an uniform speed for 5 minutes, stirring by a high-speed shear device at a shear rate of 1000r/min for 10 minutes, stirring by the high-speed shear device at a shear rate of 4000r/min for 30 minutes, stirring by the high-speed shear device at a shear rate of 1000r/min for 10 minutes, and removing bubbles produced in high-speed stirring to obtain the low-carbon tourmalinite modified asphalt. A result of a test shows that the low-carbon tourmalinite modified asphalt has excellent pavement performances and multiple functions of hot stirring and emission reduction, flame retardation and smoke suppression, air purification and city heat island effect reduction. Therefore, the low-carbon tourmalinite modified asphalt can be utilized as an asphalt pavement material.

Description

technical field [0001] The invention belongs to the technical field of pavement materials, and in particular relates to the preparation of low-carbon tourmaline-modified asphalt. Background technique [0002] At present, under the background of global warming, the development of low-carbon economy and the construction of low-carbon society have become the strategic focus of our country and the world. In the construction of road engineering, more than 90% of the high-grade roads newly built in my country every year are asphalt pavements, and most of the asphalt pavements use traditional hot-mix asphalt mixture. It will also emit a large amount of exhaust gas and dust, which seriously pollutes the environment. In 1995, people began to develop an environmentally friendly warm-mix asphalt mixture, which reduces waste gas emissions and energy consumption by reducing the mixing temperature of the mixture, but due to its performance compared with hot-mix asphalt mixture There is a...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L33/02C08K13/02C08K3/38C08K3/32C08K5/42
CPCY02A30/60
Inventor 王朝辉李蕊李彦伟王鹏
Owner CHANGAN UNIV
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