1.1 This guide is intended to provide a technical approach to the evaluation of alternative supplementary cementitious materals (ASCMs) such as pozzolans and hydraulic materials that fall outside the scope of Specifications C618, C989, and C1240. This guide is intended as a general approach and guide to evaluating the ASCM for use as a hydraulic material or a pozzolan in concrete. This guide provides the initial steps for a reasonably comprehensive evaluation of an ASCM that provides due diligence for its specific intended uses in concrete, though it does not evaluate all possible performance criteria for all types of concrete mixtures. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only. 1.3 Performing the tests or meeting the test limits in this guide should not imply that the material tested meets the requirements of Specifications C618, C989, and C1240. These materials should not be represented as such and each specific source is to be evaluated separately. 1.4 This guide does not purport to address all environmental and safety concerns, if any, associated with its use. It is the responsibility of the user of this guide to establish the appropriate environmental, health, and safety issues and identify appropriate risk management procedures.
Keywordsconcrete; pozzolans; chemical admixtures; supplementary cementitious material; SCM; alternative supplementary cementitious materials; ASCM; fly ash; slag cement; blast furnace slag; calcined clays; silica fume
Currently, there are no standards that address ashes (fly ash or other ashes) other than those produced from coal only. The technical and ecomomic benefits of SCMs historically have been recognized, and with increased environmental awareness, the result is the need to develop new ways to use materials that previously have not been used as well as new sources of potential SCMs. This guide is intended to be used by ash marketers; concrete producers; and local, state, and federal agencies when specifying and using construction materials incorporating these alternative SCMs.Back to Top