Title: Proposed Revision of ACI 211.1-70: Reccommended Practice for Selecting Proportions for Normal Weight Concrete*
Author(s): ACI Committee 211
Publication: Journal Proceedings
Appears on pages(s): 253-255
Keywords: barite;heavyweight aggregate;heavyweight concrete;hematite;ilmenite;iron ores;limonite;mix proportioning;quality control;radiation shielding.
This proposed revision adds to the existing standard an appendix on proportioning heavyweight as radiation shielding and bridge counterweight structures. Although both proportioning methods of the existing ACI 211.1-70 are applicable to heavyweight concrete, the appendix is based on the absolute volume method which is generally accepted and weight concrete . The new appendix contains basic information on heavyweight concrete as well as examples showing how to select its proportions.