This document provides an overview of shotcrete technology. It discusses that shotcrete involves pneumatically projecting a concrete or mortar mixture at high velocity onto a surface. It then summarizes the composition of shotcrete including cement, aggregate, water and admixtures. It also discusses the properties and classification of shotcrete as either dry mix or wet mix. Applications are outlined such as repairing structures and constructing tunnels. Comparisons are made between shotcrete and conventional concrete, noting advantages like better bonding and density for shotcrete. The conclusion states that shotcrete is an innovative technology for concrete construction.