CONCRETE COMPOSITION FOR MANUFACTURING BY THE USE OF TBM METHOD AND THE HIGH-PERFORMANCE CONCRETE SEGMENT

PURPOSE: A segment concrete composition applied to TBM method is provided to reduce the number of steel reinforcement of segment using high tensile steel reinforcement and enhances rigidity and fire-resistance efficiency of concrete which is between high tensile steel reinforcement. CONSTITUTION: A...

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Bibliographic Details
Main Authors JEON, JAE HONG, LEE, JIN SEOP, JUNG, KI RONG, KANG, TAE SUNG
Format Patent
LanguageEnglish
Korean
Published 22.03.2013
Subjects
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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Summary:PURPOSE: A segment concrete composition applied to TBM method is provided to reduce the number of steel reinforcement of segment using high tensile steel reinforcement and enhances rigidity and fire-resistance efficiency of concrete which is between high tensile steel reinforcement. CONSTITUTION: A segment concrete composition applied to TBM method comprises a binding material 500-600kg/m^3, a fine aggregate 800-900 kg/m^3, an aggregate 800-1000 kg/m^3, water 140-180 kg/m^3, an early strength expression agent 2.52-5.04 kg/m^3, a fireproof fiber 0.414-0.972 kg/m^3 and a reinforcing fiber 10-60 kg/m^3 about a concrete unit volume. The binding material comprises cement 250-550kg/m^3 and blast furnace slag micropowder 50-300kg/m^3 about a concrete unit volume. A replacement ratio of blast furnace slag micropowder is 10-50% in the binding material, a water weight ratio(%) of binding material is 28-38, and a fine aggregate ratio of whole aggregate is 45-55 volume%. [Reference numerals] (AA) Compressive intensity(MPa); (BB) 12 hours; (CC) 3 days; (DD) 7 days; (EE) 28 days; (FF) Replacement rate of blast furnace slag(%)
Bibliography:Application Number: KR20120124534