Using the Recommended Practice for Selecting Proportions for Structural Lightweight Concrete (ACI 211.2-69)

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Title: Using the Recommended Practice for Selecting Proportions for Structural Lightweight Concrete (ACI 211.2-69)

Author(s): William W. Hotaling, Jr.

Publication: Special Publication

Volume: 46

Issue:

Appears on pages(s): 209-220

Keywords: absorption; aggregate gradation; air entrainment; cement content; coarse aggregates; density (mass/volume); fine aggregates; fineness modulus; lightweight aggregates concretes; lightweight aggregates; mix proportioning; moisture content; quality control

Date: 1/1/1974

Abstract:
The Recommended Practice for Selecting Proportions for Structural Lightweight Concrete (ACI 211.2-69) presents methods for designing structural lightweight concrete mixes, emphasizing their adjustment by employing a specific gravity factor. This in turn enables calculation of effective displaced volumes for the lightweight aggregate fractions in the mixture. Developed via a pycnometer, these factors are presented as a continuous function for a range of aggregate moisture contents. Also included in the Standard are adjustment guides as well as field control pointers.