东南沿海地区全季节预制箱梁混凝土配合比设计  

Concrete Mix Design of Prefabricated Box Girder in All Seasons in Southeastern Coastal Areas

作　　者：王文学 WANG Wenxue

机构地区：[1]浙江宁波舟山港主通道工程建设指挥部,浙江舟山316000

出　　处：《城市道桥与防洪》2020年第11期115-117,M0013,共4页Urban Roads Bridges & Flood Control

摘　　要：针对70 m预制箱梁混凝土早期抗压强度及耐久性的需求,通过调整胶凝材料的用量以及掺合料的掺配比例,进行多次试配、试验,配制出满足东南沿海地区不同季节气候条件下箱梁混凝土施工工艺需求的海工耐久混凝土配合比。Aiming at the demands of early compressive strength and durability of concrete for 70-m prefabricated box girder,through adjusting the amount of cementing material and the blending proportion of admixture,the mix ratios of marine durable concrete meeting the construction technological demands of box girder concrete under the different seasonal climate conditions in the southeastern coastal areas are prepared after many trial mixtures and tests.

关 键 词：箱梁 海工耐久混凝土 配合比设计 抗裂性评价 耐久性 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]