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Insertion type vibration rolling construction method of asphalt concrete core of earth and rockfill dam

A kind of asphalt concrete and construction method technology, which is applied in the direction of dams, barrages, and foundation structure engineering, etc. It can solve the problems of many times of vibratory rolling, slow construction, and high asphalt consumption, so as to reduce the number of rolling construction times and shorten the construction time. , the effect of high degree of mechanization

Active Publication Date: 2012-06-13
CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an insert-type vibratory rolling construction method for the asphalt concrete core wall of an earth-rock dam to solve the current problems of slow construction, many times of vibratory rolling and high asphalt consumption

Method used

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  • Insertion type vibration rolling construction method of asphalt concrete core of earth and rockfill dam
  • Insertion type vibration rolling construction method of asphalt concrete core of earth and rockfill dam
  • Insertion type vibration rolling construction method of asphalt concrete core of earth and rockfill dam

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Experimental program
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Effect test

Embodiment 1

[0022] Include the following steps:

[0023] a. Asphalt mixture and transition material paving:

[0024] Use the paver used in the construction of the roller compacted asphalt concrete core wall to pave the asphalt mixture and transition materials on both sides of the core wall at the same time, as follows:

[0025] The total content of asphalt concrete aggregate and mineral powder is 100%. The performance of the aggregate and mineral powder should meet the requirements of the "Code for Design of Asphalt Concrete Face and Core Wall of Earth-rock Dam (SL501-2010)", of which aggregate: 83%, the maximum The particle size is 15mm, and the rest is mineral powder;

[0026] Asphalt: asphalt is used to meet heavy traffic road petroleum asphalt, asphalt content: 6.5%;

[0027] The temperature of the asphalt mixture entering the formwork silo is 160°C;

[0028] b. Vibration and compaction of asphalt mixture:

[0029] A knife-type vibrator is hung at the tail of the asphalt paver. Th...

Embodiment 2

[0036] Include the following steps:

[0037] a. Asphalt mixture and transition material paving:

[0038] Use the paver used in the construction of the roller compacted asphalt concrete core wall to pave the asphalt mixture and transition materials on both sides of the core wall at the same time, as follows:

[0039] The total content of asphalt concrete aggregate and mineral powder is 100%. The performance of the aggregate and mineral powder should meet the requirements of the "Code for Design of Asphalt Concrete Face and Core Wall of Earth-rock Dam (SL501-2010)", of which aggregate: 86%, the maximum The particle size is 25mm, and the rest is mineral powder;

[0040] Asphalt: Asphalt adopts hydraulic asphalt, asphalt content: 7.1%;

[0041] The temperature of the asphalt mixture entering the formwork silo is 162°C;

[0042] b. Vibration and compaction of asphalt mixture:

[0043] A knife-type vibrator is hung at the tail of the asphalt paver. The vibrator vibrates the asph...

Embodiment 3

[0050] Include the following steps:

[0051] a. Asphalt mixture and transition material paving:

[0052] Use the paver used in the construction of the roller compacted asphalt concrete core wall to pave the asphalt mixture and transition materials on both sides of the core wall at the same time, as follows:

[0053] The total content of asphalt concrete aggregate and mineral powder is 100%. The performance of the aggregate and mineral powder should meet the requirements of "Code for Design of Asphalt Concrete Face and Core Wall of Earth-rock Dam (SL501-2010)", of which aggregate: 90%, the maximum The particle size is 35mm, and the rest is mineral powder;

[0054] Asphalt: ordinary road petroleum asphalt is used as the asphalt, and the asphalt content: 7.7%;

[0055] The temperature of the asphalt mixture entering the formwork silo is 165°C;

[0056] b. Vibration and compaction of asphalt mixture:

[0057]A knife-type vibrator is hung at the tail of the asphalt paver. The v...

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Abstract

The invention relates to an insertion type vibration rolling construction method of an asphalt concrete core of an earth and rockfill dam, belonging to a construction method of an asphalt concrete watertight core of an earth and rockfill dam. The method comprises the steps of: paving an asphalt mixed material and a transition material, vibrating and compacting the asphalt mixed material, rolling the transition material and the asphalt mixed material, and preserving heat and maintaining. The construction method sufficiently utilizes the characteristic of high-temperature quick compaction of the vibration construction while considering the advantages of large scale and high mechanical degree of the rolling construction.

Description

technical field [0001] The invention belongs to the construction method of asphalt concrete anti-seepage core wall of earth-rock dam Background technique [0002] The construction methods of asphalt concrete core wall of earth-rock dam mainly include rolling construction and pouring construction. Most large-scale water conservancy projects adopt the rolling construction method, mainly due to the high degree of construction mechanization and the quality of the project is easy to guarantee, but there are also many supporting equipment for construction, the one-time cost of equipment investment is high, and the construction environment temperature and asphalt concrete mix ratio need to be strictly controlled. An experienced construction team is required to strictly control the quality, and after paving, it needs to be placed for a period of time to cool down to a suitable rolling temperature before rolling with a vibratory roller. The high-temperature plasticity of hot-mix asph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/06E02D15/00
Inventor 王德库金正浩孙荣博骆涛张建平王治明洛桑旺扎李艳萍马智法张俊赵兴安赖兆万雷秀玲
Owner CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
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