TM 5-822-5/AFM 88-7, Chap. 1
(2) Bound base is a chemical- or bituminous-
18-2. Definitions.
stabilized soil used in the base and subbase course,
The following frost terms are used in this chapter.
consisting of a mixture of mineral aggregates and/
a. Frost, soil, and pavement terms.
or soil with one or more commercial stabilizing ad-
(1) Base or subbase course contains all
ditives. Bound base is characterized by a significant
granular unbound, or chemical- or bituminous-
increase in compressive strength of the stabilized
stabilized material between the pavement surfacing
soil compared with the untreated soil. In frost areas
layer and the untreated, or chemical- or bituminous-
bound base usually is placed directly beneath the
stabilized subgrade.
18-2
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