Aci 213r-14 Pdf !link! -

This guide provides information on the selection, proportioning, and use of structural lightweight aggregate concrete. It is intended to guide architects and engineers who are designing structures that require reduced dead weight, improved fire resistance, or better thermal properties compared to normal-weight concrete.

Detailed info on structural lightweight aggregates (LWA) and how their porous nature affects physical and mechanical properties like density and strength. aci 213r-14 pdf