ACI 211.8R-15 PDF Download

ACI 211.8R-15 is a guide that provides troubleshooting solutions for concrete mixture issues influenced by constitutive materials, jobsite conditions, or testing practices. The guide focuses on adjustments that can be made to existing proportions of normal-density concrete with or without the use of chemical admixtures, pozzolans, and slag. These adjustments are based on the actual performance of the concrete mixture in construction, taking into account factors such as placeability, consistency, strength, and durability. The guide references ACI 211.1 for the procedures used in making these adjustments.

In addition to offering guidance on adjusting concrete mixture proportions, the standard highlights the importance of evaluating jobsite conditions and testing practices before making any adjustments. It emphasizes that adjustments to the mixture proportions or sources may require resubmittal to the design professional, as detailed in ACI 301.