蒸汽养护对高性能混凝土弹性模量的影响

摘要

It is discovered that the elastic modulus of steam-curing box girder began to be decreased when box girder is removed for five days through filed testing of box girder of different ages. The elastic modulus of box girder twenty-eight days later can be calculated through the structure of younger age period and the relationship between elastic modulus and ages. Thus, the basis of time and new methods for optimizing the tension/extension of box girder's structure can be provided.%通过现场对不同龄期、蒸汽养护箱梁的弹性模量的测试，发现箱梁移出后（5天）弹性模量下降，为优化结构的张未王／放张时间提供依据，同时提出了通过龄期与弹性模量的关系，进一步可以通过低龄期结构推算出28天以后箱梁的模量，为箱梁的优化施工提出了新的措施。