QUALITY DETERMINATION METHOD OF INSTALLED CONCRETE, FORM REMOVAL TIMING DETERMINATION METHOD AND FORM REMOVAL TIMING SETTING METHOD, LIFETIME ESTIMATION METHOD OF CONCRETE STRUCTURE, MANAGEMENT METHOD OF CONSTRUCTION INFORMATION AND FORM FOR MEASURING RESISTANCE VALUE OF INSTALLED CONCRETE

• Main Authors: IYODA TAKESHI, MISAKA TAKEHIRO
• Format: Patent
• Language: English
• Published: 07.07.2014
• Subjects: BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; FIXED CONSTRUCTIONS; FORMS; HANDLING BUILDING MATERIALS ON THE SITE; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHUTTERING; TESTING

PROBLEM TO BE SOLVED: To provide a method capable of performing quality determination, form removal timing determination, form removal timing setting, lifetime estimation and construction information management with high accuracy.SOLUTION: A sample with an electrode disposed within concrete is used, the sample is created for each condition of varying a curing period, transition of a resistance value during hardening is measured/recorded, and a performance test about each sample is implemented. A result of the performance test is recorded, and a correlation between the resistance value and the curing period and the performance test result depending on a progress of a hydration reaction of concrete is grasped. On the other hand, an electrode is disposed in a portion of an actual structure positioned in covering of concrete, concrete is installed within a form, transition of a resistance value during hardening of the covering portion of concrete is measured by the electrode. The measured resistance value is applied to the resistance value in the correlation, thereby determining the quality of installed concrete of the actual structure.