Portland Cement Basics

Portland Cement is a mixture of Limestone (CaCO 3 ), mixed with a second material containing clay as source of alumino-silicate. Because clay is needed, usually an impure limestone which already contains some clay is used. The impure Limestone must be made of at least 80% Limestone. Depending on the purity of the limestone and … Continue reading Portland Cement Basics

Hypertufa – A Hybrid

Hypertufa is a hybrid concrete that is very light and very strong, much lighter than regular concrete, and is perfect for making sculptures, waterfalls, reptile landscapes, planters, pots, fake rocks & trees, cliffs, and other things typically made from poly-resins or concrete, etc.. The sand has been replaced by Sphagnum Moss (peat moss) a very … Continue reading Hypertufa – A Hybrid