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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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This guide to concrete proportioning provides background information on, and a procedure for, selecting and adjusting concrete mixture proportions. It applies to normal-density concrete, both with and without chemical admixtures, supplementary cementitious materials, or both. The procedure uses calculations based on the absolute volumes occupied by the mixture constituents. The procedure incorporates consideration of requirements for aggregate gradation, workability, strength, and durability. Example calculations are provided, including adjustments based on the results of the first trial batch. Appendixes cover laboratory tests and proportioning of high-density concretes.
The Collection Online includes all new committee standards and reports released throughout the year. The most recently added include:
PRC-506.5-22: Specifying Underground Shotcrete - Guide
SPEC-350.1-22: Tightness Testing of Environmental Engineering Concrete Structures - Specification
CODE-440.11-22: Building Code Requirements for Structural Concrete Reinforced with Glass Fiber-Reinforced Polymer (GFRP) Bars—Code and Commentary
CODE-355.2-22: Post-Installed Mechanical Anchors in Concrete—Qualification Requirements and Commentary
PRC-549.3-22: Glass Fiber-Reinforced Concrete Premix—Report
SPEC-440.5-22: Construction with Glass Fiber-Reinforced Polymer Reinforcing Bars - Specification
PRC-560-22: Insulating Concrete Form Design and Construction—Report
PRC-544.11-22: Measuring Shrinkage, Creep, and Transport Properties of Fiber-Reinforced Concrete—Report
PRC-309.5-22: Compaction of Roller-Compacted Concrete - Report
SPEC-548.9-21: Type ES (Epoxy Slurry) Polymer Overlay for Bridge and Parking Garage Decks—Specification (SI Units)
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