Dictionary of Moisture Protection & Restoration

Absorption rate = Weight of water absorbed by masonry unit (usually brick) in one minute. Accelerator = A substance which (when added to concrete, mortar or grout), increases the rate of hydration, (shortening the time of set), or increasing the rate of hardening or strength. Adhesion = The ability of mortar to stick to masonry units. Admixture = Material added to mortar, concrete, or grout to change the character of the mortar as a water repellent, coloring agent, retarder, or accelerator. Adobe brick = Unit made of clay with asphaltic materials sometimes added. Unit is sun-hardened. Aggregate = Material, such as sand or gravel, added to mortar. Ashlar = A square or rectangular cut stone. Arris = Sharp edge made where two surfaces or sides

meet. Bat = A broken brick. Often half brick.

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