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ACI Updates Key Concrete Proportioning Guide

ACI The logo for the American Concrete Institute.
The guide, titled “Selecting Proportions for Normal-Density and High-Density Concrete,” is considered a “one-stop reference” that can help provide novice users with the information needed to perform various outlined procedures.

The American Concrete Institute has released an updated guide to concrete proportioning.

The guide, titled “Selecting Proportions for Normal-Density and High-Density Concrete,” is considered a “one-stop reference” that can help provide novice users with the information needed to perform various outlined procedures, according to the ACI.

The ACI considers the update significant.

“As the committee achieved this major milestone, I would like to take the opportunity to thank ACI Committee 211 for their continued support and dedicated efforts in pushing along this initiative. I also would like to express my gratitude to Jerzy Zemajtis from ACI staff, past chairs Tim Folks and Gary Knight, and past secretary Ed McGuire for their continued support,” said Ezgi Wilson, chair of ACI Committee 211.

What’s Changed in the Guide?

The revised guide includes the latest information on supplementary cementitious materials, chemical admixtures and particle packing. Like previous versions, the revised guide is intended to provide guidelines regarding mixture proportions to attain desired performance characteristics.

Users of the guide can find information about key mixture proportioning parameters for both binary and ternary mixes. Proportioning parameters include information about cement efficiency factors and paste-to-void volume factor.

The ACI, considered a leading global authority for the adoption of consensus-based standards, technical resources and training, is free for ACI members and available for purchase on the ACI website.

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