QUICK-HARDENING CONCRETE

PROBLEM TO BE SOLVED: To provide quick-hardening concrete that shows better dry shrinkage than that of conventional quick-hardening concrete, and also has excellent expression of short-time strength and medium-to-long term strength.SOLUTION: The quick-hardening concrete comprises quick-hardening cem...

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Hauptverfasser:	KWAK DOYEON, YAMANAKA TOSHIYUKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide quick-hardening concrete that shows better dry shrinkage than that of conventional quick-hardening concrete, and also has excellent expression of short-time strength and medium-to-long term strength.SOLUTION: The quick-hardening concrete comprises quick-hardening cement admixture, water-absorbing polymer, and setting retarder. In the quick-hardening concrete, the quick-hardening cement admixture may be admixture predominantly composed of calcium aluminate.SELECTED DRAWING: None 【課題】従来の速硬コンクリートよりも良好な乾燥収縮特性を示し、かつ、短時間強度ならびに中長期強度の発現性に優れた速硬コンクリートを提供するものである。【解決手段】速硬性セメント混和材と、吸水性ポリマーと、凝結遅延剤とを含有する速硬コンクリート。また、前記速硬性セメント混和材がカルシウムアルミネート類を主成分とする混和材である速硬コンクリート。【選択図】なし