Much of the information presented in this paper should be considered common knowledge by those who regularly encounter soil-cement mixtures. This paper was developed to provide the reader a comprehensive understanding of what soil-cement mixtures are and what physical properties to expect. The target audience is civil or geotechnical engineers that are not commonly engaged in work involving shallow or deep soil mixing or other applications in which soil is mixed with cementitious reagents in situ. However, even readers with knowledge of these topics may benefit from the information included in the tables and figures and commentary presented throughout. The term soil-cement is self-explanatory, but will herein also be used to describe any mixture of soil and reagents containing some cementitious component installed in situ. Other common terms used to describe mixtures like this are soil-grout and soilcrete. Applications in which soil or sediment is mixed with cementitious reagents ex situ are not addressed here.