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co.paction Test in side for Thick Layers of RCC for Huanghuazhai Hydropower Station

Compaction Test in side for Thick Layers of RCC for Huanghua...

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The Fifth international Symposium on Roller co.pacted co.crete(RCC) Dams

作者： li chunmin~1 liu shukun~2 1.beijin haohua rivers international water engineering co.sulting co. Ltd. beijing China 2.China Institute of water Resources and Hydropower Research beijing China

＜正＞A vibratory co.pactor with vertical vibration mechanism for thick lift co.paction of Roller co.pacted co.crete（RCC）was tested at the Luojiaohe river dam site located in Guizhou province in southern *** roller was co.pared with a co.ventional vibratory *** vertical vibration roller is a model SD451（11.0 tons） developed by Sakai Heavy Industries,*** Japan,the co.ventional vibratory roller is a model BW202AD（11.3 tons）developed by Bomag GmbH of *** goal of the test is to show that RCC mix can be placed and co.pacted in lifts up to 100 cm,reducing the time and also the co.t for RCC dam co.struction while maintaining quality.A test was co.ducted by a group co.sisting of Chinese RCC experts,dam design engineers,the co.tractor, and *** lift thickness for the SD451 was 100 cm and was based on recent RCC dam co.struction experience in *** test for a 100 cm thick lift was repeated three times and resulted in RCC placement of up to 3 m in *** lift thickness used for the BW202AD was 50 cm and 75 cm,although 30 cm thick lift has been standard in *** test results for the vertical vibration roller:density,co.pressive strength,and permeability were significantly better than the results for the co.ventional vibratory *** expert group above co.firmed the performance through a practical application and approved the use of the vertical vibratory roller on the Huanghuazhai RCC dam co.structed along the Getuhe river located approximately 300 km southeast of the original test *** will result in a change of co.struction specification for RCC dams.

关键词： co.paction RCC lift of 100 cm vertical vibration

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