A study on the alkali-aggregate reaction in high-strength concrete with particular respect to the ground granulated blast-furnace slag effect

• Published in: Cement and concrete research Vol. 35; no. 7; pp. 1305 - 1313
• Main Author: Kwon, Young-jin
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Ltd 01.07.2005; Elsevier Science
• Subjects: Aggregate; Aggregates and other concrete constituents; Alkali-aggregate reaction; Applied sciences; Buildings. Public works; Cement; Cement concrete constituents; Concrete additives (fillers, pozzolanic and hydraulic materials); Concretes. Mortars. Grouts; Corrosion; Durability. Pathology. Repairing. Maintenance; Exact sciences and technology; Expansion; Granulated blast-furnace slag; Materials; Other special applications (sand concrete, roller compacted concrete, heavy concrete, architectural concrete, etc.); Granulated blast-furnace slag; Aggregate; Expansion; Alkali-aggregate reaction; Cement; Concrete mix design; Compressive strength; Alkali aggregate reaction; Experimental study; Corrosion inhibitor; Reactivity; Granulated blast-fumace slag; Granulated slag; Blast furnace slag; High strength concrete; Aggregate(materials)
• ISSN: 0008-8846; 1873-3948
• DOI: 10.1016/j.cemconres.2004.09.021

The alkali-aggregate reaction (AAR) in high-strength concrete and the effect of ground granulated blast-furnace slag (GGBFS) were studied in this paper. From the results of this study, following conclusions can be drawn: (1) In high-strength concrete, because of high alkali content, the possibility of alkali-aggregate reaction is much higher than conventional concrete. (2) The occurrence of large expansion can be prevented by using nonreactive aggregate, which has been judged according to the mortar bar and chemical method's as specified in JIS A 5308, in high-strength concrete. (3) The replacement of cement by 30% of blast-furnace slag and using low-alkali cement can prevent the alkali-aggregate reaction from causing large expansion in high-strength concrete.