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Asphalt concrete and preparation method thereof

A technology of asphalt concrete and rock asphalt, which is applied in the field of asphalt concrete and its preparation, can solve the problems of loud noise, affecting the life and work of surrounding people, and achieve the effects of reducing noise, improving sound absorption effect, and improving surface smoothness

Active Publication Date: 2020-08-07
华滋奔腾建工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the car is running on the asphalt concrete road, the friction between the tire and the road will generate a lot of noise, which will affect the life and work of the surrounding people.

Method used

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  • Asphalt concrete and preparation method thereof
  • Asphalt concrete and preparation method thereof
  • Asphalt concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: a kind of asphalt concrete, the components included and the corresponding parts by weight are shown in Table 1, and are prepared by the following steps:

[0040] S1, prepare rock asphalt modified asphalt of corresponding parts by weight and melt it, take noise reduction particles of corresponding parts by weight and immerse in molten rock asphalt modified asphalt, take out the noise reduction particles for later use; the outer surface of the noise reduction particles taken out The asphalt protective layer formed after drying rock asphalt modified asphalt.

[0041] S2, take the corresponding parts by weight of polyester fibers and granular lignin fibers and mix uniformly to form a fiber mixture; take the fiber mixture and corresponding parts by weight of mineral powder, quartz particles and crushed stones and add them to the molten rock asphalt modified asphalt , and mix uniformly to obtain the first mixture. Add the noise-reducing particles to the first m...

Embodiment 2-9

[0044] Example 2-9: an asphalt concrete, the only difference from Example 1 is that the parts by weight of some components are different, and the specific components and corresponding parts by weight are shown in Table 1.

[0045] Table 1. Components of Examples 1-9 and their corresponding parts by weight table

[0046]

Embodiment 10-11

[0047] Embodiments 10-11: an asphalt concrete, the only difference from Embodiment 1 is that the outer diameters of the noise-reducing particles are 15 mm and 25 mm, respectively.

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Abstract

The invention discloses asphalt concrete and a preparation method thereof. The asphalt concrete comprises the following components in parts by weight: 97-121 parts of rock asphalt modified asphalt; 0.9 to 3.6 parts of a fiber filler; 1.5 to 3.2 parts of fine aggregate; 3-7 parts of coarse aggregate; 7 to 16 parts of noise reduction particles, wherein each noise reduction particle comprises a hollow spherical metal outer layer and a sound absorption inner layer filled in the metal outer layer, a plurality of through sound transmission holes are formed in the metal outer layer, and the outer diameter of the metal outer layer is 15-25mm. The preparation method comprises the following steps: S1, preparing corresponding parts by weight of rock asphalt modified asphalt, melting, taking noise reduction particles, immersing the noise reduction particles into the molten rock asphalt modified asphalt, and taking out the noise reduction particles for later use; and S2, adding the fiber filler, the fine aggregate, the coarse aggregate and the noise reduction particles in corresponding parts by weight into the molten rock asphalt modified asphalt, and uniformly mixing to obtain the asphalt concrete. The invention has the advantage of reducing the noise in the use process.

Description

technical field [0001] The invention relates to the field of asphalt road construction materials, more specifically, it relates to an asphalt concrete and a preparation method thereof. Background technique [0002] Asphalt concrete is a mixture made by mixing gravel or crushed gravel, stone chips or sand, mineral powder, etc., with a certain proportion of road asphalt materials under strictly controlled conditions. Asphalt concrete is often used for paving roads, and it has the advantages of block construction progress and high strength. [0003] The Chinese patent application publication number CN109265076A discloses a rubber asphalt concrete and its preparation process, which relates to the technical field of asphalt concrete, and solves the problem that the rubber asphalt concrete is prone to cracking due to the poor adhesion between components in the rubber asphalt concrete . A rubber asphalt concrete, comprising the following components in parts by weight: 50-70 parts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B20/10C04B20/00C04B111/52
CPCC04B26/26C04B20/1062C04B2111/52C04B2111/0075C04B14/02C04B18/141C04B14/06C04B18/26C04B16/0683C04B14/34C04B20/0048C04B20/1007
Inventor 包星火邢建生廖望威陶银良
Owner 华滋奔腾建工集团有限公司