Additional Free Resources
In keeping with our commitment to the concrete industry, the American Concrete Institute is a technical and educational society dedicated to advancing concrete knowledge by improving the design, construction, maintenance, and repair of concrete and masonry structures. This is accomplished through our educational seminars, technical documents, conventions, conferences, and membership and certification programs. The following are additional resources available free of charge:
Guidelines for Authorities and Responsibilities in Concrete Design and Construction 
Free Educational Documents:
E1-99 Aggregates for Concrete
E2-00 Reinforcement for Concrete
E3-01 Cementitious Materials for Concrete
E4-03 Chemical Admixtures for Concrete
NIST Virtual Concrete Laboratory
Free Bulletins on Repair Applications Procedures
Floor Moisture and Floor Coverings
Concrete-Related Association Directory