Table 8:
Reduction in Compressive Strength of Concrete and Yield Strength of Reinforcement Steel at 500 °C according to ACI318 and BS8110.
Reduction Factor
NWC
LWC
Proposal factor
For Foam Concrete
ACI-318
BS-8110
ACI-318
BS-8110
ACI-318
BS-8110
Compressive strength of concrete
0.82
0.7
0.95
1.0
0.68
0.58
Yield strength of reinforcement steel
0.6
0.6
0.6
0.6
0.6
0.6