ASTM Specification for Ground iron Blast Furnace Slag: Its Development, Use, and Future

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Title: ASTM Specification for Ground iron Blast Furnace Slag: Its Development, Use, and Future

Author(s): F. J. Hogan and J. H. Rose

Publication: Special Publication

Volume: 91

Issue:

Appears on pages(s): 1551-1576

Keywords: accelerated tests; blast furnace slag; evaluation; iron; performance; specifications; tests; General

Date: 2/1/1986

Abstract:
In the United States, blast furnace slag was first used as a cementitious material in 1896. Since that time its use has followed a course of limited and sporadic success. Recently, however, world-wide attention has been drawn to the technical advantages of ground granulated blast furnace slag used as a separate cement to be added at the concrete mixer. Recognizing its potential, the ASTM Subcommittee E38.06.02 developed a specification to cover three grades of ground granulated slag. This paper discusses the development of the specification and presents round-robin test data leading to the adoption of a test method for evaluating the hydraulic characteristics of slags. Adopted in 1982 as ASTM C 989, the specification has played an important role in market growth which is approaching 1.0 million tons annually. Test results from another ASTM cooperative test program demonstrating the usefulness of a rapid (24 hr) hydraulicity test method are also given.