ACI CT 2020 ACI Concrete Terminology

ACI CT 2020 ACI Concrete Terminology. composite sample — sample obtained by blending two or more individual samples of a material. compression fange? — the widened portion of an I, T, or similar cross-sectional beam that is compressed by bending under normal loads. compression member — any member in which the primary stress is longitudinal compression. compression reinforcement — reinforcement designed to carry compressive stresses. (See also stress.) compression test — test made on a test specimen of mortar or concrete to determine the compressive strength. concentric tendons — tendons following a line coincident with the gravity axis of the prestressed concrete member. concordant tendon — a tendon with a profle that does not produce secondary moments and support reactions due to the prestressing force. concrete — mixture of hydraulic cement, aggregates, and water, with or without admixtures, fbers, or other cementitious materials. concrete block — a concrete masonry unit, usually containing hollow cores. concrete breakout failure — a concrete failure mode that develops a cone or edge failure of the test member due to setting of the anchor or to applied loads. concrete brick — solid concrete masonry units of relatively small prescribed dimensions. concrete cart — see buggy. concrete compressive strength — the measured maximum resistance of a concrete specimen to axial compressive loading and expressed as force per unit cross sectional area. concrete containment structure — a composite concrete and steel assembly that is designed as an integral part of a pressure retaining barrier that, in an emergency, prevents the release of radioactive or hazardous efuents from nuclear power plant equipment enclosed therein. concrete dye — similar to traditional one-component hardeners, having additional constituent materials formulated to color the concrete surface. concrete fnishing machine? — (1) a machine mounted on fanged wheels that ride on forms or on specially set tracks, used to fnish surfaces such as those of pavements; (2) a portable power-driven machin hesitation setting — see false setting (preferred term). Hessian — see burlap (preferred term). high-alumina cement — see calcium-aluminate cement (preferred term). high-density concrete — concrete of substantially higher density than that made using normal- density aggregates, usually obtained by use of high-density aggregates and used especially for radiation shielding. high-discharge mixer — see inclined-axis mixer (preferred term). high-early-strength cement — portland cement characterized by attaining a given level of strength in mortar or concrete earlier than does normal portland cement (referred...