2026-03-15T12:46:35Z https://ir.kagoshima-u.ac.jp/oai

oai:ir.kagoshima-u.ac.jp:00007599 2026-03-03T08:45:53Z 228:273:5302 35:36

シラスの工業的利用に関する研究 (第2報) : シラスおよびフライアッシュを用いたオートクレーブ硬化体 Studies on the industrial application of "shirasu" (Report 2) : on the autoclave-hardened bodies using "shirasu" and fly ash 島田, 欣二 SHIMADA, Kinji 久米, 国幹 KUME, Kunimoto 福重, 安雄 FUKUSHIGE, Yasuo open access Shirasu, is distributed chiefly in southern Kyushu and consists of volcanic ash, pumice and other materials. Shirasu, fly ash and slaked lime were used as raw materials as autoclave-hardened bodies. The press molded and then autoclaved bodies were prepared as follow; mixing ratio of slaked lime:shirasu:fly ash=1:0.85:0.15, 1:2.55:0.45, 1:5.1:0.9, mixing water (added 0-2.25% Al(H_2PO_4)_3 of all raw materials) 15%, press-molding pressure 200kg/cm^2, curing pressure 5-15kg/cm^2, curing time 5-15 hours. Results are as follow; apparent density 1.80-1.92, bulk density 1.44-1.68, water absorption 12.5-29.0%, compressive strength 108-577kg/cm^2. From the point of economic view, the best steam-curing conditions of the press molded and then autoclaved bodies are as follow; mixing ratio of slaked lime:shirasu:fly ash=1:3, mixing water 15%, addition of aluminium phosphate to mixing water 0.075%, curing pressure 10kg/cm^2, curing time 10 hours. 鹿児島大学 Kagoshima University 1967-03 jpn departmental bulletin paper VoR http://hdl.handle.net/10232/11082 https://ir.kagoshima-u.ac.jp/records/7599 0451212X AN00040363 鹿児島大学工学部研究報告 The research reports of the Faculty of Engineering, Kagoshima University 7 29 37 https://ir.kagoshima-u.ac.jp/record/7599/files/AN00040363_v7_p29-37.pdf application/pdf 4.3 MB 2016-10-28 1967-03