Figure 4.4.2.2.1a( a)— Temperatures within slabs during ASTM E119 fire tests— carbonate aggregate concrete.
Figure 4.4.2.2.1a( c)— Temperatures within slabs during ASTM E119 fire tests— semi-lightweight aggregate concrete.
Refer to ACI 216.1 for other graphs showing concrete temperatures for beam reinforcing and other conditions.
For applications with a constant cover dimension over the length of the rebar, the temperature in the concrete will be the same over the entire length of the embedded portion of the post-installed rebar. Figure 1 below shows an example of a roof slab extension with fire exposure on one side and the associated temperature distribution over the bond length of the of the post-installed rebar.
Figure 4.4.2.2.1a( b)— Temperatures within slabs during ASTM E119 fire tests— siliceous aggregate concrete.
4 September 2024