Pavers are paving stones, which find application for exterior flooring. The base mix of high strength concrete when combined with a high concentration of stone yields paving stones with solid strength and durability. The face mix is usually a blend of fine aggregate, concentrated cement and a color pigment which provides a captivating look to the paver and also withstands scrapping. The coloring pigment is added only to the face mix and not to the base mix as the aesthetics of the base mix is unimportant as it is not exposed.
Stuctural properties. Pavers with face-mix usually consist of two layers, the face mix which consists of the pigment and the base mix which is generally without any pigment. Generally face mix is about 7 to 10 millimeters thick which can withstand a lifetime of wear.