Patent
Instantaneously demoldable porous concrete molding and its production
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TLDR
In this article, an instantaneously demoldable porous concrete molding is obtained by combining particle bodies, each of which is formed by covering a coarse aggregate with a paste or mortal having 150-300mm consistency as paste flow or mortal flow of 1-mm average thickness.Abstract:
PROBLEM TO BE SOLVED: To obtain an instantaneously demoldable porous concrete molding having high bending strength and large permeability coefficient and suitable for a water permeable interlocking concrete block or the like usable even for drive way. SOLUTION: This instantaneously demoldable porous concrete molding is obtained by combining particle bodies, each of which is formed by covering a coarse aggregate with a paste or mortal having 150-300mm consistency as paste flow or mortal flow of 1-mm average thickness, through the paste or mortal part, and has 5.0-7.0N/mm bending strength and 0.3-3.0cm/sec permeability coefficient.read more
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Water permeable concrete
TL;DR: In this paper, the authors proposed a water-permeable concrete which has a high permeability coefficient and high compressive strength and can easily be shaped, and the production process of the water permeability concrete comprises: charging a mixed material of a composition consisting of 100 pts.vol.
Patent
Instant stripping porous concrete compact
Minoru Hata,Osamu Tomita,治 富田 +2 more
TL;DR: In this paper, an instant stripping porous concrete compact is obtained in such a way that kneaded matter of a coarse aggregate and a composition of 10-80% paste or mortar in terms of vol% to the coarse aggregate is cast into a form and formed therein, the obtained compact is instant stripped, after that, it is subjected to curing.
Patent
Quick hardening type water permeable concrete
Katsutoshi Ichikawa,Satoshi Kajio,Hiroshi Kuga,Akira Obata,Mitsuyoshi Okada,Onishi Tatsuto,Tatsuzo Sato,比呂氏 久我,達三 佐藤,達人 大西,明 小畠,光芳 岡田,勝俊 市川,聡 梶尾 +13 more
TL;DR: In this paper, a quick hardening type water permeable concrete is produced by molding a mixed/kneaded material of a composition comprising coarse aggregate and paste or mortar or which a volume ratio thereof to the coarse aggregate is 30 to 80%.
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Production of water-penetrable construction material containing coal ash
TL;DR: In this paper, a mixture of coal ash, 5-20wt.% of cement, and 0-20t.% coal ash with voids is used to obtain the objective construction material of high density.