FIBER-REINFORCED LIGHTWEIGHT CONCRETE COMPOSITION

• Main Authors: HAYAKAWA TOMOHIRO, MUROGA YOICHIRO, KOJO MAKOTO, SUEMASU DAISUKE, TOMII TAKAYOSHI, KAWADA KENICHI, FURUKAWA YUSUKE, AOKI SHIGERU, KATO HIROYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 13.10.2016
• Subjects: ARTIFICIAL STONE; ASSEMBLY OF BRIDGES; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; FIXED CONSTRUCTIONS; LIME, MAGNESIA; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; METALLURGY; OR VIADUCTS; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide an organic fiber-containing lightweight concrete composition capable of imparting concrete not enlarging excessively a modulus of static elasticity after 28 days of hardening, while having super quick hardening property, and having medium flowability without sagging, excellent workability, an inexpensive price and high toughness.SOLUTION: An organic fiber-containing lightweight concrete composition comprises 100 pts.wt cement, 120-210 pts.wt coarse aggregate, 93-255 pts.wt fine aggregate having an absolute dry specific gravity of 2.3 or higher, 12-25 pts.wt inorganic hollow balloon, and 3.2-7.0 pts.wt organic fibers having a length of 18-30 mm.SELECTED DRAWING: None 【課題】超速硬性を有しながら、硬化２８日後の静弾性係数が過度に大きくならず、ダレがなく中流動性を有して施工性がよく、安価であり且つ高靭性を有するコンクリートを与える有機繊維含有軽量コンクリート組成物を提供すること。【解決手段】セメント １００重量部、粗骨材 １２０〜２１０重量部、絶乾比重２．３以上の細骨材 ９３〜２５５重量部、無機中空バルーン １２〜２５重量部および長さ１８〜３０ｍｍの有機繊維 ３．２〜７．０重量部からなる有機繊維含有軽量コンクリート組成物。【選択図】なし