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混凝土是桥梁工程的主要建筑材料之一,又是唯一只能在施工过程中实行控制,确定其各种性能指标的材料。由于组成混凝士原材料的变化及剂量配合比的误差均在不同程度上影响混凝土的质量,因此在施工前及施工现场采取必要的控制手段是确保现浇混凝土达到应有质量的主要措施,尤其对隐蔽工程如钻孔桩水下混凝土的质量控制更为重要,因为它具有不同一般混凝土的特点和
Concrete is one of the main building materials for bridge engineering and the only material that can only be controlled in the construction process to determine its various performance indexes. Due to the changes of raw materials and the error of dosage, the quality of concrete is affected to varying degrees. Therefore, the necessary control measures before construction and on construction site are the main measures to ensure the quality of cast-in-place concrete, especially Quality control of concealed works such as under-water concrete for bored piles is more important because of the different characteristics of common concrete