SYSTEM AND METHOD FOR CONCRETE SHRINKAGE STRESS TEST BY MEASURING STEEL-BAR DEFORMATION

PURPOSE: A system and method for evaluating a contraction stress of concrete through measuring a deformation amount of the steel reinforcement are provided to accurately predict and evaluate with respect to cracks of concrete and to figure out a changing progress of a contraction stress at each mate...

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Bibliographic Details
Main Authors LEE, EUI BAE, OH, BO HWAN, KIM, GYU YONG
Format Patent
LanguageEnglish
Korean
Published 07.05.2012
Subjects
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
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Summary:PURPOSE: A system and method for evaluating a contraction stress of concrete through measuring a deformation amount of the steel reinforcement are provided to accurately predict and evaluate with respect to cracks of concrete and to figure out a changing progress of a contraction stress at each material age. CONSTITUTION: A system for evaluating a contraction stress of concrete through measuring a deformation amount of the steel reinforcement comprises a concrete specimen(10), a tubular deformed bar(20), a deformation measuring gauge, and a deformation recording system(40). The tubular deformed bar is inserted in a longitudinal direction of the central part of a concrete test piece. The deformation measuring gauge is joined to the inner circumference of the tubular deformed bar. The deformation measuring gauge is connected to the deformation measuring gauge by a wire(35). A plurality of the deformation measuring gauges is joined to the inner circumference of the tubular deformed bar.
Bibliography:Application Number: KR20100105210