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International Journal of Concrete Structures and Materials

Table 3 Limit bending stiffness.

From: Experiment and Analysis of Mechanical Properties of Lightweight Concrete Prefabricated Building Structure Beams

 

Plain concrete

Foamed concrete

Ceramsite concrete

Deflection limit (mm)

3.16

3.16

3.16

The corresponding load of deflection limit(kN)

216.3

201.2

222.9

Bending stiffness (106 N·m2)

6.52

5.88

6.75

Initial bending stiffness (106 N·m2)

6.78

6.67

7.31

Rate of change

3.83%

11.84%

7.70%

  1. The initial bending stiffness represents the bending stiffness of 50kN.
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