Asphalt mastic macadam mixture and preparation method thereof

A technology of asphalt mastic and mixture, which is applied in the field of road engineering materials, can solve problems such as low road surface strength, impact on traffic conditions, and early damage to the road surface, so as to improve high temperature stability, aging resistance, and bonding strength Effect

Inactive Publication Date: 2019-01-18
平湖市中建沥青混凝土工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the common technical and quality problems of asphalt pavement are mainly the reduction of service life of road engineering and early damage of pavement.
On the one hand, the actual service life of existing roads is generally shorter than the designed service life; on the other hand, with the rapid increase in traffic volume, large-scale vehicles and severe overloading, as well as changing climatic conditions, high temperatures in summer and low temperatures in winter , the poor anti-rutting ability of the road surface and the low strength of the road surface lead to various forms of cracks on the road surface, affecting the performance of the road surface, requiring multiple repairs and maintenance work, which not only takes time and effort, but also affects traffic conditions and safety

Method used

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  • Asphalt mastic macadam mixture and preparation method thereof
  • Asphalt mastic macadam mixture and preparation method thereof

Examples

Experimental program
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Effect test

preparation example 1

[0035] Heat 100kg of base asphalt to 165°C, then add 5kg of SBS resin, shear at high speed for 2 hours, add 3kg of polybutene-terephthalate-polyether glycol block polymer, 3kg of nano-silicon dioxide, Sulfur powder 0.3kg, then heat up to 175°C to grind the resulting mixture, then add 1kg of rubber softening oil, control the temperature at 180°C and stir for 2 hours, lower the temperature to 170°C, add 0.18kg of stabilizer and stir for 1 hour , That is, SBS modified asphalt.

preparation example 2

[0037] Heat 100kg of base asphalt to 170°C, then add 8kg of SBS resin, shear at high speed for 2.5 hours, add 5kg of polybutene-terephthalate-polyether glycol block polymer, 4kg of nano-silica, Sulfur powder 0.4kg, then heat up to 178°C to grind the resulting mixture, then add soft rubber oil 3kgkg, control the temperature at 183°C and stir for 2.5 hours, lower the temperature to 173°C, add 0.26kg of stabilizer and stir for 1.5 hours , That is, SBS modified asphalt.

preparation example 3

[0039] Heat 100kg of base asphalt to 175°C, then add 10kg of SBS resin, shear at high speed for 3 hours, add 8kg of polybutene-terephthalate-polyether glycol block polymer, 5kg of nano-silica, Sulfur powder 0.5kg, then heat up to 180°C to grind the resulting mixture, then add 5kg of rubber softening oil, control the temperature at 185°C and stir for 3 hours, lower the temperature to 175°C, add 0.35kg of stabilizer and stir for another 2 hours , That is, SBS modified asphalt.

[0040] Preparation example 1 of modified wood fiber

[0041] Dissolve 4kg of maleic anhydride in 6kg of N,N-dimethylformamide solution, then add 0.4kg of hydroquinone, stir for 20 minutes, add 2kg of wood fiber, control the temperature at 75°C for 1 hour, vacuum-filtered to obtain product A, the resulting product A was soaked in acetone for 30 minutes, stirred for 3 hours, vacuum-filtered again to obtain product B, the resulting product B was placed in an oven, and kept at 80°C for 12 hours to dry, Tha...

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Abstract

The invention discloses an asphalt mastic macadam mixture and a preparation method thereof and belongs to the field of road engineering materials. The asphalt mastic macadam mixture contains the following raw materials in parts by weight: 100 parts of aggregate, 5-7 parts of SBS (Styrene-Butadiene-Styrene) modified asphalt, 8-12 parts of mineral powder, 0.2-0.6 part of a fiber stabilizer, 2-7 parts of carbon black, 5-8 parts of phenolic resins and 2-3 parts of a curing agent. The asphalt mastic macadam mixture is capable of improving the strength and durability of the pavement, and can achievethe effects of enabling the pavement to achieve excellent cracking resistance and wear resistance and reducing risk of rut diseases on the asphalt pavement.

Description

technical field [0001] The invention relates to the field of road engineering materials, in particular to an asphalt mastic macadam mixture and a preparation method thereof. Background technique [0002] Transportation is the lifeblood of national economic development. With the rapid development of our country's economy, the increase of flow rate, the increase of axle load and channelized traffic have become the remarkable characteristics of modern traffic. Because asphalt pavement has the characteristics of good driving comfort and excellent performance, fast construction speed and convenient maintenance, it has always occupied a large proportion in road paving, which puts forward higher requirements for asphalt pavement construction, such as high speed, Safety, comfort, durability, etc. [0003] Asphalt mastic macadam mixture (SMA) is a kind of asphalt mastic binder composed of asphalt binder, mineral powder, a small amount of fine aggregate and fiber stabilizer, filled ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2201/10C04B14/14C04B14/28C04B14/42C04B18/26C04B14/022C04B24/302C04B24/121
Inventor 周发海
Owner 平湖市中建沥青混凝土工程有限公司
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