夏季碾压混凝土施工工艺及措施

Trial placing RCC in summer

三峡右岸一期混凝土纵向围堰，昆凝土工程量160余万m3，其中碾压混凝土约80％。按其建筑物使用功能，分别用全断面碾压和“金包银”施工法。碾压混凝土施工可遵循先试验后大规模施工的程序。在施工工艺，特别是在夏季施工措施方面作了有益的探索。这对充分发挥碾压混凝土经济、快速的优越性将起到更大的推动作用。

The construction methods of full- section compaction and the Jin Bao Yin are used for lststage longitudinal concrete cofferdam at the right bank of the Three Gorges according to the functions ofthe structures with a concrete volume of 16×105m3, of which 80% are RCC. The construction procedure isthat trial constructions are done before large - scale RCC placement starts. A beneficial investigation andstudy has been made in construction techniques, especially in construction measures in summer. It 's agreater pushing effect on developing RCC priority in economic and rapid construction.Jin baoyin is a dam construction method. Jin mesns Gold, standing for conventional concrete; Yin meansSilver, standing for RCC; The Jinbaoyin method means RCC dam body is covered with conventionalconcrete as facing of a dam.