Proposed Revision of ACI 613A-59: Recommended Practice for Selecting Proportions for Structural Lightweight Concrete

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Title: Proposed Revision of ACI 613A-59: Recommended Practice for Selecting Proportions for Structural Lightweight Concrete

Author(s): ACI Committee 211

Publication: Journal Proceedings

Volume: 65

Issue: 1

Appears on pages(s): 1-19

Keywords: absorption;aggregate gradation;air content;air entrainment;calibration;cement content;coarse aggregates;fine aggregates;fineness aggregates;fineness modulus;lightweight aggregate concretes;lightweight aggregates;mix proportioning;moisture.

Date: 1/1/1968

Abstract:
Describes, with examples, a method for proportioning and adjusting structural grade concrete containing lightweight aggregates. The method described uses a "specific gravity factor," determined by pycnometer test on the aggregates, which accounts for variations in moisture content of the aggregates. A tabular form is suggested for systematic calculation of batch weights and "effective displaced volumes." Examples are given for adjustments for change in aggregate moisture content, aggregate proportions, cement factor, slump, and air content.