# Superior Heat Resistant Concrete

## Improved Concrete Heat Capacity

FireROK™ cement concrete absorbs heat more slowly as it has twice the heat capacity than that of portland cement concrete. FireROK™ then dissipates this heat rapidly, reducing thermal stresses that contribute to loss in strengths and ultimately the structural integrity of concrete.

### Exceptional Concrete Thermal Conductivity

CeraTech's FireROK™ cement concrete conducts heat 5 times faster than ordinary portland cement concrete, making it far less susceptible to cracking and spalling due to thermal stresses.

Thermal conductivity (K) testing followed ASTM D5334 - 08 Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by

Thermal Needle Probe Procedure.

### Finite Element Analysis

The following data was developed to illustrate the differences between CeraTech's FireROK™ and portland cement concrete. The model consisted of a 6 ft. x 6 ft. x 12 inch slab. The slab had an initial temperature of 72°F and was subjected to a 60 second cycle of convective heat at 1000°F with a constant film coefficient of 15 W/m^{2}K.

This analysis shows that CeraTech's FireROK™ cement concrete absorbed less heat and experienced lower tensile stresses than an equivalent volume of portland cement concrete under equal thermal loading.