PRODUCTION METHOD OF CAST-IN-PLACE POROUS CONCRETE

• Main Authors: KISHIRA RYO, ISHIDA MASAO, SHIMADA SATOSHI, TAKAHASHI HIDETAKA
• Format: Patent
• Language: English; Japanese
• Published: 03.08.2015
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; FIXED CONSTRUCTIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LIME, MAGNESIA; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; MEASURING; METALLURGY; PHYSICS; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TESTING; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide a production method of cast-in-place porous concrete having excellent water permeability, water drainage, and durability, by managing a specific fresh property of the porous concrete.SOLUTION: The cast-in-place porous concrete including portland cement, fine aggregate, coarse aggregate, water, and high performance AE water reducing agent, is produced by managing a fresh property, so that percentage of void becomes 15-20 volume%, a non-vibration percentage of void becomes 32 volume% or less, and a mortar flow-down ratio becomes 50 volume% or less. 【課題】ポーラスコンクリートの特定のフレッシュ性状を管理することにより、透水性、排水性、および耐久性に優れた現場打ちポーラスコンクリートの製造方法を提供する。【解決手段】ポルトランドセメント、細骨材、粗骨材、水、および高性能ＡＥ減水剤を含む現場打ちポーラスコンクリートの製造において、空隙率が１５〜２０体積％、無振動空隙率が３２体積％以下、およびモルタル流下率が５０体積％以下になるように、フレッシュ性状を管理して製造する、現場打ちポーラスコンクリートの製造方法。【選択図】なし