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A kind of asphalt concrete and preparation method thereof

A technology for asphalt concrete and rock asphalt, applied in the field of asphalt concrete and its preparation, can solve problems such as affecting the life and work of surrounding people, loud noise, etc., and achieve the effects of improving filling uniformity, reducing noise, and improving sound absorption effect.

Active Publication Date: 2021-12-24
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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  • A kind of asphalt concrete and preparation method thereof
  • A kind of asphalt concrete and preparation method thereof
  • A kind of 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 an asphalt concrete and a preparation method thereof. Asphalt concrete contains the following components by weight: rock asphalt modified asphalt: 97-121 parts; fiber filler: 0.9-3.6 parts; fine aggregate: 1.5-3.2 parts; coarse aggregate: 3-7 parts; noise reduction particles : 7-16 parts; wherein, the noise-reducing particles include a hollow spherical metal outer layer and a sound-absorbing inner layer filled inside the metal outer layer, and the metal outer layer is provided with a plurality of through sound-transmitting holes, and the metal outer layer The outer diameter is 15mm‑25mm. The preparation method comprises the following steps: S1, preparing and melting rock asphalt modified asphalt in corresponding parts by weight, taking noise-reducing particles and immersing them in the molten rock asphalt-modified asphalt, and taking out the noise-reducing particles for use; S2, taking corresponding parts by weight A large number of fiber fillers, fine aggregates, coarse aggregates and noise-reducing particles are added to the molten rock asphalt modified asphalt, and mixed evenly to obtain asphalt concrete. The invention has the advantage of reducing noise during use.

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 Patents(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
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