Published: Jan 1994
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This chapter deals with methods for estimating the potential, later-age strength of a concrete mixture based upon the compressive strength measured on cylindrical specimens at early ages. The results of the cooperative research program leading to the development of ASTM Test Method for Making, Accelerated Curing, and Testing Concrete Compression Test Specimens (C 684) are reviewed. This review is based on Chapter 13 of ASTM STP 169B, which was written by M. H. Wills, Jr., and was titled “Accelerated Strength Tests.” The earlier text has been augmented by the addition of information on the high-temperature and pressure accelerated test method that was added to ASTM C 684 in 1989. In addition, the chapter has been expanded by including the basis of ASTM Test Method for Developing Early-Age Compression Test Values and Projecting Later-Age Strengths (C 918).
Research civil engineer, Building and Fire Research Laboratory, National Institute of Standards and Technology, Gaithersburg, MD