Civil MDC

Analysis and Design of Reinforced Concrete Bridge Structures 2

Analysis and Design of Reinforced Concrete Bridge Structures


This chapter provides currently accepted definitions, nota-tion, and abbreviations particular to concrete bridge designpractice which have been used in the preparation of this document.

For cement and concrete terminology already defined,reference is made to ACI 116R. Terms not defined in ACI116R or defined differently from ACI 116R are defined for specific use in this document as follows :

aggregate, normal weight—aggregate with combineddry, loose weight, varying from 110 lb. to 130 lb/ft3 (approx-imately 1760 to 2080 kg/m3).

compressive strength of concrete (fc′)—specifiedcompressive strength of concrete in pounds per square inch(psi) or (MPa).

Wherever this quantity is under a radical sign, the squareroot of the numerical value only is intended and the resultantis in pounds per square inch (psi) or (MPa).

concrete, heavyweight—a concrete having heavyweight aggregates and weighing after hardening over 160 lb/ft3(approximately 2560 kg/m3).concrete, shrinkage-compensating—an expansive cement concrete in which expansion, if restrained, induces compressive strains that are intended to approximately offsettensile strains in the concrete induced by drying shrinkage.

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