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Analysis of Dynamic and Static Elastic Modulus of In-situ Marine Concrete  

Han, Sang-Hun (Coastal Engineering & Energy Depart. KORDI)
Park, Woo-Sun (Coastal Engineering & Energy Depart. KORDI)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.21, no.6, 2009 , pp. 437-443 More about this Journal
Abstract
Impact echo method estimating the soundness of concrete measures the dynamic elastic modulus of specimens which are different with static elastic modulus tested by uni-axial compression test. Thus, this paper investigates the relationships between dynamic and static elastic modulus based on in-situ concrete cores. Also, dynamic elastic modulus was compared with compressive strength. Concrete cores were obtained from about 20 to 70 years concrete structures at three different harbors which were Incheon, Wando, and Masan in Korea. In order to investigate the influence of exposure condition on the relationship, air zone, splash zone, and tidal zone were selected. Different harbors showed the different relationships between dynamic and static elastic modulus, but exposure conditions have no influence on the relationship between dynamic and static elastic modulus. Also, the relationship between dynamic elastic modulus and compressive strength has the same tendency as the relationship between dynamic and static elastic modulus. The relationship equations were proposed to estimate the relationships properly.
Keywords
Elastic modulus; compressive strength; impact echo method; marine concrete;
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