Construction method of noise type asphalt pavement

A construction method and asphalt surface layer technology, which is applied in the field of asphalt pavement construction, can solve problems such as difficulty in pavement construction, and achieve the effects of improving road surface roughness, ensuring molding standards, and improving sound value

Active Publication Date: 2012-09-26
CHINA TIESIJU CIVIL ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The asphalt noise road test runway is 300m long and 3.5m wide, and the surface is required to be rough and flat. For the formed road surface, the PCB 377A02 microphone is used to measure the road surface noise at the set position in the car. The measurement noise frequency range is 20-2000HZ. The requirement of high precision with a lower limit difference of 3dB makes the construction of the pavement very difficult. So far, there is no public report on the construction method of the asphalt noise pavement

Method used

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  • Construction method of noise type asphalt pavement
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Effect test

Embodiment 1

[0038] According to the construction method that the above-mentioned specific embodiment provides and the ore powder particle size range that table 2 provides, list the crushed stone that actually applies in the present embodiment and the ore powder are the synthetic grade that is 92%: 8% by weight in table 3 match:

[0039] Table 3: Synthetic gradation of crushed stone and mineral powder

[0040] Mesh size(mm)

[0041] After the completion of the construction, the construction depth of the asphalt surface layer was detected to be 1.6mm, and the PCB 377A02 microphone was used to measure the road surface noise at the set position in the vehicle, satisfying the measurement noise frequency range of 20-2000HZ, and the noise upper and lower limit difference is 3dB high precision requirements.

Embodiment 2

[0043] According to the construction method that the above-mentioned specific embodiment provides and the ore powder particle size range that table 2 provides, list the crushed stone that is actually used in the present embodiment and ore powder are 90%: 10% synthetic by weight ratio with table 4 Grading:

[0044] Table 4: Synthetic gradation of crushed stone and mineral powder

[0045] Mesh size(mm)

[0046] After safe construction, the construction depth of the asphalt surface layer was detected to be 1.3mm, and the PCB 377A02 microphone was used to measure the road surface noise at the set position in the vehicle, satisfying the measurement noise frequency range of 20-2000HZ, and the noise upper and lower limit difference is 3dB high precision requirements.

Embodiment 3

[0048] According to the construction method that the above-mentioned specific embodiment provides and the ore powder particle size range that table 2 provides, list the crushed stone that is actually used in the present embodiment and ore powder are 91%: 9% synthetic by weight ratio with table 5 Grading:

[0049] Table 5: Synthetic gradation of crushed stone and mineral powder

[0050] Mesh size(mm)

[0051] After the completion of the construction, the construction depth of the asphalt surface layer was tested to be 1.45mm, and the PCB 377A02 microphone was used to measure the road surface noise at the set position in the car, satisfying the measurement noise frequency range of 20-2000HZ, and the noise upper and lower limit difference is 3dB high precision requirements.

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Abstract

The invention discloses a construction method of a noise type asphalt pavement. The construction method is characterized by including the steps: firstly, after construction of a roadbed and a base on the roadbed is completed, paving a lower asphalt layer on the base, paving an upper asphalt layer 4cm in thickness on the surface of the lower asphalt layer, and forming an initial pressing face on the upper asphalt layer by means of rolling of a tire roller, wherein the upper asphalt layer is made of stone matrix asphalt composed of lignocelluloses, asphalt, broken stones and mineral powder; secondly, uniformly spreading coarse-grain mixtures on the surface of the initial pressing face; thirdly, re-rolling the surface of the initial pressing face by the tire roller until set compactness and voidage are reached, and performing final rolling and polish for the pavement by the aid of a steel-wheel roller so as to form an asphalt surface; and finally, washing the asphalt surface with high-pressure water to achieve structural depth, and forming the rough pavement uniform in structure after descumming. By the aid of the method, pavement construction quality is greatly improved, and forming standardization of the noise type asphalt pavement is effectively guaranteed.

Description

technical field [0001] The invention relates to a construction method of an asphalt pavement, more specifically to a construction method of an asphalt noise pavement applied in special occasions. Background technique [0002] Asphalt noise road surface is a special vehicle test road surface. Its function is to assess the impact of wind cut, chassis vibration, tire and road friction on the interior of the car when the car is running at 40km / h, and is used to assess the noise reduction of the car body. and car condition. The asphalt noise road test runway is 300m long and 3.5m wide, and the surface is required to be rough and flat. For the formed road surface, the PCB 377A02 microphone is used to measure the road surface noise at the set position in the car. The measurement noise frequency range is 20-2000HZ. The high-precision requirement that the lower limit difference is 3dB makes the construction of the pavement very difficult. So far, there is no public report on the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C7/26E01C19/43C04B26/26
Inventor 郭宏坤曹友东王时根王新仁王睿
Owner CHINA TIESIJU CIVIL ENG GRP CO LTD
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