Introduction of Technical guideline for use of ground granulated blast furnace slag (GGBFS) as mineral admixture for concrete production

Abstract

Ground granulated blast furnace slag (GGBFS) is a product ground to powder from granulated blast furnace slag - a by-product of the blast furnace iron-making process. With its mineralization properties, GGBFS has high hydraulic activity when combined with portland cement for concrete and mortar fabrication. In the world today, GGBFS is one of the most used cementitious supplementary materials in cement and concrete production. In Vietnam, GGBFS has been initially produced on an industrial scale and is used by many cement and concrete manufacturers to produce cement and concrete products. To have the facility to provide engineers with the necessary instructions to ensure the correct use of GGBFS in concrete production, use in construction, ensure the quality of the work, and gain the benefits in the use of GGBFS (respect to engineering, economy, environment), the Ministry of Construction has developed a technical guideline on using GGBFS for concrete production. The content of the guideline includes an introduction to the properties of GGBFS, its influence on the properties of freshly mixed concrete, hardened concrete, and guidance for the design of mix proportions, testing, and acceptance of the concrete using GGBFS. The guidelines in the manual are compiled from the domestic and abroad research results. This paper presents a summary of the contents of this guideline for introduction and for the reader to clearly understand the contents of this guideline.