ACI 304.3R-20 (IN-LB, SI) PDF Download

ACI 304.3R-20 (IN-LB, SI) is a standard that provides guidance on the measuring, mixing, transporting, and placing of heavyweight concretes used for radiation shielding in nuclear construction. The standard covers various aspects such as cement, heavyweight aggregates, water, and admixtures, and offers recommendations on their usage. Mixture proportioning of heavyweight concrete is discussed in detail, providing guidelines on the appropriate ratios and compositions for optimal results.

The standard also provides information on mixing equipment, form construction, placing procedures, and methods of consolidation. It stresses the importance of quality control, inspection, and testing to ensure the integrity and performance of the heavyweight concrete. The document includes a list of references for further reading and research.

It is worth noting that this version of ACI 304.3R-20 does not cover preplaced heavyweight concrete, as that topic is addressed in the 2004 version of the document.