Under a certain long-term load, concrete would creep. In the reinforced concrete axial compressive members:
A: Creep increases the compressive stress of concrete.
B: The compressive stress of concrete and steel bar keeps unchanged.
C: Creep decreases the compressive stress of concrete and increases the compressive stress of steel bar.
D: Creep increases the compressive stress of concrete and decreases the compressive stress of steel bar.
A: Creep increases the compressive stress of concrete.
B: The compressive stress of concrete and steel bar keeps unchanged.
C: Creep decreases the compressive stress of concrete and increases the compressive stress of steel bar.
D: Creep increases the compressive stress of concrete and decreases the compressive stress of steel bar.
举一反三
- For fully prestressed concrete under the service load, in the section of concrete member A: Tensile stress is allowed to occur B: No tensile stress occurs C: Allow for cracks D: There is no compressive stress
- In the calculation of the bearing capacity of the normal section of a T-shaped reinforced concrete beam, it is assumed that ( ) within the effective width of the compressed flange. A: the compressive stress is uniformly distributed B: the compressive stress is distributed in a parabolic shape C: the compressive stress is distributed in a triangle shape D: the compressive stress is distributed partly uniformly and partly non-uniformly
- On the top of the concrete pavement, （） is developed during day time. A: tensile stress B: shear stress C: compressive stress D: bulk stress
- For concrete specimen subjected to uniaxial compression, the stress reaches the maximum when the strain reaches the ultimate compressive strain.
- The common failure characteristic for the large and small eccentrically compressed reinforced concrete members is that the concrete in compression zone reaches the concrete ultimate compressive strain at the failure.