C55微膨胀自密实混凝土在钢管混凝土拱中的应用研究

Study on Application of C55 Micro Expansive Self-compacting Concrete in Concrete-filled Steel Tube Arch

对C55微膨胀自密实混凝土的原材料、配合比设计、性能及其在钢管混凝土拱中的工程应用进行了研究,为实际工程解决了钢管混凝土拱所需的保坍性好、微膨胀、自密实的高性能混凝土的配制和浇注等应用问题,保证了系杆拱桥拱肋混凝土的灌注质量。

This text studies on the C55 micro expansive self- compacting concrete in the raw material,design of mixing proportion,performance and its constructional application in concrete- filled steel tube arch,which provides a solution for meeting the requirement of concrete- filled steel tube arch for a good slump resistance,micro expansion,self- compaction in actual construction,a mixture for high performance concrete to be used in high standard casting,by which it is possible to guarantee the casting quality of tied arch bridge ribs.