Saturated-surface-dry

Saturated surface dry (SSD^{[citation needed]}) is defined as the condition of an aggregate in which the surfaces of the particles are "dry" (i.e., surface adsorption would no longer take place), but the inter-particle voids are saturated with water. In this condition aggregates will not affect the free water content of a composite material.^[1][2]

The water adsorption by mass (A_m)) is defined in terms of the mass of saturated-surface-dry (M_ssd) sample and the mass of oven dried test sample (M_dry) by

${\displaystyle A={\frac {M_{ssd}-M_{dry}}{M_{dry}}}}$

See also[]

• Construction aggregate

References[]

3- Neville, A. M. “Properties of Concrete”, 4th & Final ed., Longman, Malaysia, 1995 rep. 1996, 844 pp.
4 - Field usage information from a manufacturer - https://blog.kryton.com/2012/08/what-ssd/

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