Use of Imported Sand to Compensate for the Shortage of Sea Sand in the Kansai Bloc

Abstract

At present, the sea sand used in concrete in the Kansai Bloc is obtained from the Chugoku, Shikoku, and Kyushu Districts, areas in which sand collection will be restricted or prohibited in several years. Therefore, the industry is now investigating the use of crushed sand, fine slag aggregate, recycled fine aggregate, and imported fine aggregate in concrete. Of the fine aggregates produced in significant quantities by foreign countries, this paper focuses on river sand from the People's Republic of China and reports on the problems and supply and quality control issues involved with the use of imported fine aggregate.