ชื่อเรื่อง : Water-permeable fired block for constructions using ceramic wastes.
ผู้ประดิษฐ์ : Ariga, Kikuo; Uchida, Osamu; Tomatsu, Ichiro; Fukuda, Tomoyuki.
ชนิดวัสดุ : Ceramic
เลขที่สิทธิบัตร : Jpn. Kokai Tokkyo Koho JP 11,130,516, 6 pp.
บทคัดย่อ : The construction block with thickness 50 mm, natural water permeability per unit area 35 mm/h, and compression strength 150 kg/cm2 is manufd. by (1) breaking wastes of ceramic products (e.g., tiles, insulators, dishes, or blocks of semi-porcelain, porcelain, or stoneware materials) with water absorption 5% into grains with max. diam. 10 mm, (2) adding a binder, that is 10-30 wt.% micropowder with size  0.1 mm of low-m.p. enamel frits or glass frits with softening point  800 C and optionally 0-10 wt.% clay material or other binder, to the aggregate, (3) mixing, (4) forming, and (5) firing at 700-900. The construction block is useful for environmental protection.
ประเภทเอกสาร : Patent