Cement-treated base (CTB) is a general term that applies to a mixture of
native soils and/or manufactured aggregates with measured amounts of portland
cement and water. The soil is then compacted and cured to form a strong,
durable, and frost-resistant paving material. Other descriptions such as
soil-cement base, cement-treated aggregate base, or cement-stabilized base are
This document provides a basic guide on the use of cement-treated base (CTB) for pavement applications. It provides an overview on the design and construction of CTB for both mixed-in-place and central plant mixed operations. A suggested construction specification is also included.