Refractory cement is used for building brick or stone fireplaces, barbecues or other installations which are subjected to intense heat. While refractory cement is similar to standard cement in how it is mixed, it differs significantly from standard cement in the use of one ingredient. Rather than using Portland cement for a cementing agent in the mixture, refractory cement uses a compound called calcium aluminate instead. This provides the heat-resistant properties needed.
The most common types in the market are:
- High Alumina Refractory Castable is MaxHeat K from Mahakoshal Refractories and PVT Limited which can withstand temperatures of 1600 degrees. It has 60% Alumina Content.
- High Alumina Refractory Castable is MaxHeat A from Mahakoshal Refractories and PVT Limited which can withstand temperatures of 1750-1810 degrees. It has 90% Alumina Content.
Refractory mortar is a specially engineered mixture of sand, calcium aluminate, cement, and fireclay. It is used to lay firebrick in places that are exposed to extremely high temperature. The refractory mortar is utilized only to build fire places and shall not be applied on hot faces.
Mortar, which is a mixture of water, cement, and sand, has a higher water-to cement ratio than concrete. It has a thicker consistency which makes it a great adhesive and bonding agent for bricks and tiles. Mortar mix can be used for construction and repair of brick, block, and stone for barbecues, pillars, walls, tuck-pointing mortar joints, and planters.