Technical Information on Building Materials for Use in the Design of Low-Cost Housing – 8. Calcium Chloride As It Affects Portland Cement and Concrete

This historic digest is part of a series published by the U.S. Department of Commerce’s National Bureau of Standards on the technical characteristics of building materials used in the construction of affordable housing units. Each digest presents condensed, essential facts regarding its given topic, and is intended for use by staff at federal agencies, manufacturers, trade associations, and builders. This brief provides a summary of the 1935 research paper “Effects of Calcium Chloride on Portland Cement and Concretes” by Paul Rapp, National Bureau of Standards.