Reinforced concrete beam is under normal service loads, and
A: it usually works with cracks
B: once the cracks appear, the crack is passing through to the total section
C: once the cracks appear, the bonding force between the concrete and the reinforcement along the full length is lost
D: it usually does not develop cracks
A: it usually works with cracks
B: once the cracks appear, the crack is passing through to the total section
C: once the cracks appear, the bonding force between the concrete and the reinforcement along the full length is lost
D: it usually does not develop cracks
举一反三
- Reinforced concrete beams work with cracks under normal load.
- Reinforced concrete beams work with cracks under normal load. A: 正确 B: 错误
- 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
- The cause of cracks in concrete are: stress due to applied （） and stress due to temperature or （） change when concrete is restrained。
- While walking along the icy river banks, we could see cracks in the ice _____ in all directions.