摘要
目前机制砂已广泛应用于桥梁结构预应力混凝土中,为研究机制砂混凝土弹性模量随龄期的变化情况,制作C50机制砂混凝土试件,标准养护3 d、5 d、7 d、28 d和56 d五个龄期,测试分析了轴心抗压强度和弹性模量随龄期的变化情况,并拟合了关系式,可为机制砂混凝土在公路桥梁上部结构预应力混凝土中的应用提供试验依据。
The manufactured sand has been widely used in prestressed concrete of bridge structures.In order to study the change of the elastic modulus of manufactured sand concrete with age,the C50 manufactured sand concrete specimens were prepared for standard curing for 3 d,5 d,7 d,28 d and 56 d,and the changes of the axial compressive strength and elastic modulus with age were analyzed and the relation was fitted,which can provide experimental evidence for the application of manufactured sand concrete in prestressed concrete of superstructure of highway bridge.
作者
安苏龙
AN Su-long(Linfen Traffic Construction Quality Supervision Station,Linfen,Shanxi 041000,China)
出处
《山西交通科技》
2020年第3期87-89,107,共4页
Shanxi Science & Technology of Transportation
关键词
机制砂
混凝土
龄期
轴心抗压强度
弹性模量
manufactured sand
concrete
age
axial compressive strength
elastic modulus
