高炉セメントを用いたローラ転圧コンクリートの性状

概要

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Recently, the roller compacted concrete is being used increasingly as a material for concrete dam and concrete pavement. The construction method for these structures requires no slump concrete, because the concrete is transported by damp trucks and compacted by vibrating rollers. It is essencially important to design an adequate mix proportion in concrete and to compact sufficiently at the field for the roller compacted concrete. The usage of portland blast furnace slag cement has increased for the concrete construction in Japan, because the cement contributes the energy saving and improvement of concrete durability. In this paper, the mixing tests for the roller compacted concrete using the portland blast furnace slag cement were carried out to determine the optimum mix proportion through testing of various properties of hardened concrete, such as flexural strength, length change, resistances for freezing and thawing cycles, and fatigue strength. Consequently, the use of the portland blast furnace slag cement was found to be quite effective as the cementicious material for the roller compacted concrete, excepting the case that the early-age strength is required. Furthermore the properties of the hardened roller compacted concrete were found to be much influenced by the compaction degree of concrete.
社団法人日本材料学会の論文
1991-09-15