Hydraulic asphalt concrete antiseepage material with large particle size

Abstract

The invention discloses a hydraulic asphalt concrete antiseepage material with a large particle size and a a rock-fill dam constructed therefrom. The antiseepage material mineral aggregate grading index is 0.38, the maximum aggregate particle size in the mineral aggregate is 26.5mm, and the asphalt-aggregate ratio of the antiseepage material asphalt usage amount is 6.5%. The material can meet the requirement of the rolling type asphalt concrete core technology standard, in practical engineering, the hydraulic asphalt concrete antiseepage material with a large particle size can raise bearing capability of the heated bitumen mixture, rolling apparatuses used for construction of the rolling type asphalt concrete core and transitional materials at two sides are unified, cost of the rolling type asphalt concrete core construction equipment, workloads of maintenance and management, and construction cost of the rolling type asphalt concrete core engineering are reduced. The spreading thickness in rolling type asphalt concrete core construction is increased, daily construction intensity of the rolling type asphalt concrete core construction is increased, and a technology support for the rolling type asphalt concrete core engineering construction progress is provided.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, in particular to the technical field of construction engineering of water conservancy and hydropower water retaining structures, and in particular to a roller-compacted asphalt concrete anti-seepage material for water conservancy and hydropower engineering water retaining structures and a core wall rockfill dam constructed thereof. Background technique [0002] At present, RCC core rockfill dams are widely used in my country, especially for those with high seismic design intensity, poor geological conditions, deep overburden, and unsuitable for other dam types, RCC core dams are widely used. The wall dam is undoubtedly the best choice, and its good earthquake resistance and anti-seepage performance have been verified by operating projects. However, during the construction of the RCC core wall project, thermal construction is usually adopted according to the characteristics of the ...

AI Technical Summary

Problems solved by technology

The present invention has carried out the following field tests in cold and high-altitude areas: do not change the material (maximum aggregate particle size 19mm), use the original construction equipment (use less than 1.5t special small vibrating roller for asphalt concrete core wall), increase asphalt concrete booth The pavement thickness was 35cm, but the test results failed to achieve the effect of improving the daily construction strength of the roller compacted asphalt concrete core wall and ensuring the construction progress

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