Firebrick Grog 0-3mm Refractory Aggregate

Crushed firebrick makes an excellent aggregate for a castable refractory, e.g. high heat refractory concrete. This type will survive in real high heat and can be used for hot-face applications.

The mix of Firebrick Grog, which is a refractory or heat-resistant aggregate, mixed with a heat-resistant cement, like Cement Fondu, is often referred to as castable, which is suitable for making pizza ovens and other outdoor ovens.

I don’t want to disappoint, but we are not experts on pizza ovens, bread ovens or other outdoor ovens and don’t have the answers to questions about how best to make such!

The recommended mix of Firebrick Grog and Ciment Fondu is 4 parts Grog to 1 part Cement.

Firebrick Grog is also suitable for the Roman block method of mould making.

What is a hot face?

A hot face is any surface facing the main heat generated by a heat source (e.g. wood fire, gas burner, electrical heating spiral & other heat-producing elements). Internal walls, floor and arches made from firebricks inside a pizza oven are hot face. Firebricks face the heat, the hot flames from the wood fire and the red-hot embers. Refractory concrete can face the heat; therefore, applied as a hot face.

Ciment Fondu is a Calcium Aluminate Cement (CAC) also known as High Alumina Cement (HAC), which has several specific properties, including quick setting and excellent resistance to heat, thermal cycles and abrasion.