ACI - American Concrete Institute

CPCI - Canadian Pre-cast/Pre-stressed Concrete Institute

CRSI - Concrete Reinforcing Steel Institute

ESCSI - Expanded Shale, Clay, & Slate Institute

NCMA - National Concrete Masonry Association

NPCA - National Pre-cast Concrete Association

NRMCA - National Ready Mixed Concrete Association

PCA - Portland Cement Association

PCI - Pre-cast/Pre-stressed Concrete Institute

PTI - Post-Tensioning Institute

World of Concrete - Concrete Resources