@article{oai:ir.kagoshima-u.ac.jp:00002247,
 author = {島田, 欣二 and SHIMADA, Kinji and 福重, 安雄 and FUKUSHIGE, Yasuo and 平田, 好洋 and HIRATA, Yoshihiro and 井田, 重信 and IDA, Shigenobu},
 journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University},
 month = {Nov},
 note = {Shirasu, which is a sort of volcanic ejecta and widely deposited in southern
Kyushu, consists mainly of volcanic glass (shorten as SVG) with a fixed chemical
composition. In this paper, glass-forming regions were examined for the system
SVG-MgO-ZrO_2, furthermore the alkaline durability and crystallization property
were investigated on the glasses for GRC (Glassfiber Reinforced Concrete).
The batches of the system were heated at 1400°C and 1500°C, and quenched into
cold water. The compositions of clear or partially crystallized glasses are shown in
Fig.1 The SVG-MgO-ZrO_2 glass particles (2.5g) were immersed in 2N NaOH
solution (100ml) at 70°C for 24 h. The weight loss of the glass particles decreased
with an increase in particle size and also in MgO or ZrO_2 content of the glasses
(Fig.2). Heat treatment of the glasses at 1200°C for 1 h caused the formation of
monoclinic zirconia, tetragonal zirconia, zircon, and forsterite crystals. The formation regions of the crystals precipitated from the SVG-MgO-ZrO_2 glasses by heat treatment are shown in Fig.3.},
 pages = {95--98},
 title = {シラスの工業的利用に関する研究（第18報） : シラスガラス－マグネシア－ジルコニア系におけるガラス化領域と同系ガラスの二, 三の性質},
 volume = {25},
 year = {1983}
}