Proportioning Normal Weight Concrete


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Title: Proportioning Normal Weight Concrete

Author(s): John R. Wilson

Publication: Special Publication

Volume: 46


Appears on pages(s): 177-194

Keywords: absorption; aggregates; cement content; coarse aggregates; concrete durability; concretes; density (mass/volume); fine aggregates; mix proportioning; standards; water-cement ratio; workability

Date: 1/1/1974

The purpose of the Normal Weight Concrete Proportioning Session is to familiarize the student with the recommended procedures for calculating mix proportions by the two methods given in ACI 211.1-70. Methods discussed are (1) proportioning by weight based upon an assumed, estimated or calculated weight per cubic yard, in which specific gravities of the aggregate are not required and (2) proportioning by absolute volumes of all ingredients. An example of proportioning by both methods is discussed step-by-step, supplemented with slides and student worksheets.