本主题包括与在施工期间放置的水下混凝土有关的信息。水下混凝土使用TREMIE放置，一个带有漏斗形顶部的垂直管道。水下混凝土的混合物设计用于连续浇注和预防水泥冲洗。添加剂与水泥和聚集体一起使用，以增加水下混凝土强度。
有几种<强大>特种 放置混凝土的非传统方法。这些方法可以在现场制备方面提供经济优势，需要配件和设备，降低劳动力成本。 Properly applied, Shotcrete, a sprayed concrete, is a durable construction material that bonds strongly with earth, rock, steel and existing concrete. Shotcrete is easily applied, its formwork assemblies are often simpler than in conventional placement, and less material is used, since the layers of sprayed concrete are thinner. Pumped Concrete and Pneumatically Placed Concrete also involve the delivery of concrete as a spray from either a dry or wet mix. Both methods utilize pumps, primarily the mechanical type for the pumped concrete, whereas pneumatic placement uses compressed air. For sites that are difficult to access, or at which space is limited, these methods are practical alternatives to conventional concrete placement.
本主题包括与在施工期间放置的喷射器相关的信息。Shotcrete是一种湿预混混凝土，通过压缩空气软管浇铸到垂直和架空表面上。射击筒不需要模板，可以用钢棒，网格或纤维加固。