ACI 309.2R-15 PDF Download

ACI 309.2R-15 is a standard guide that provides guidelines for identifying and controlling visible surface effects that result from consolidation on formed concrete surfaces. It recognizes that achieving a perfectly homogeneous and blemish-free concrete element is challenging and aims to assist in minimizing negative surface effects.

The standard acknowledges that defining an acceptable level of quality for the concrete surface is subjective and should be specified in the contract documents. It explores the various direct and indirect cause-and-effect relationships, as well as other factors, that impact the appearance of the concrete surface.

The document includes photographs to illustrate typical concrete surface finish effects that deviate from absolute perfection. It emphasizes the importance of proper planning during the design and specification stages to minimize negative surface effects. It also discusses significant consolidation factors that can help reduce undesirable surface effects in concrete.