【摘要】 为将混凝土碾压层厚从常规的30 cm加大到50～60 cm,提升碾压混凝土筑坝效率,采用国产双钢轮垂直振动碾及压实度检测仪进行50、60 cm层厚混凝土碾压工艺试验,确定了最佳的施工参数,并在韩江高陂水利枢纽工程中应用。检测结果表明,国产双钢轮垂直振动碾能将60 cm及以下层厚混凝土压实,国产压实度检测仪能够用于60 cm及以下层厚混凝土压实度检测。混凝土厚层碾压可加快筑坝速度、减少坝体层间结合面数量,具有良好的推广应用前景。更多还原

【Abstract】 In order to increase the thickness of roller compacted concrete(RCC) from the conventional 30 cm to 50～60 cm,and improve the construction efficiency of RCC dams,this paper conducts the 50～60 cm concrete rolling compaction test by the first domestic double-steel-wheel vertical vibratory roller and compaction detector,determines the best construction parameters through this test and applies them in the Gaobei Water Conservancy Project of Han River.The test results show that,by reasonable selection of the rolling parameters,the domestic double-steel-wheel vertical vibratory roller is capable of compacting concrete with a thickness of 60 cm and below.While the domestic compaction detector can detect the compactness of concrete with a thickness of 60 cm and below.Thick concrete rolling technology,which can increase construction speed of dams and reduce the number of interlayer bonding surfaces of the dam,show a good popularization and application in construction of RCC dams.更多还原