JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A Study on Compressive Strength Estimation of Underwater Concrete Structures According to Water Depths
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Study on Compressive Strength Estimation of Underwater Concrete Structures According to Water Depths
Lee, Jisung; Han, Sanghun; Park, Seunghee;
  PDF(new window)
 Abstract
Harbor facilities require long-term durability and safety, and also maintain the performance requirement until the durability life. However, existing harbor facilities are becoming superannuated with durable years and durability is declined by erosion of the sea and damage from sea. In addition, harbor facilities will be in demand for the expansion of harbor and offshore structures with rising economic power by enhancement of domestic industry and increase of import and export. Therefore, in this study, two kinds of nondestructive test (NDT) techniques (schmidt rebound hammer and ultrasonic sensor) are verified for the effective maintenance of underwater concrete structures including harbor facilities. Sea field applicability of Schmidt hammer and ultrasonic sensor was verified by comparing field test result with sea field test result and also deduced the compressive strength estimation equation by depth of the water. On the basis of the sea field test result, compressive strength estimation equation which was deduced by multiple regression analysis indicated highest accuracy compared to other equations, especially it will be more likely to be used in underwater because of the depth of water correction. In the future, if schmidt hammer and ultrasonic sensor which were invented as waterproofing are used with ROV (Remotely Operated Vehicle), it will be possible to make a diagnosis of high reliability for underwater concrete structures and set up a ubiquitous concept of NDT system.
 Keywords
Underwater concrete;Nondestructive test;Schmidt hammer;Ultrasonic sensor;
 Language
Korean
 Cited by
 References
1.
Garlich, M. J. (1996). "Underwater non-destructive testing for bridge substructure evaluation." proc. of Structural Materials Technology: An NDT Conference, San diego, California, pp. 49-54.

2.
Hong, S. W. and Cho, Y. S. (2011). "A study on the estimation of the compressive strength of concrete structures using ultrasonic puls velocity method and rebound hardness method." Architectural Institute of Korea, Vol. 27, No. 1, pp. 19-26 (in Korean).

3.
Hwang, I. S., Hong, S. D. and Kim, H. D. (2007). "Typhoon disaster and reconstruction in overseas." Journal of the Korean Society of Civil Engineers, Vol. 55, No. 10, pp. 103-110 (In Korean).

4.
Kim, S. M. (2011). A study on the estimation of compressive strength of concrete by rebound hardness test, M.S., YEUNGNAM Univ (in Korean).

5.
Lee, J. W., Oh, D. H., Kwak, S. K. and Kim, S. T. (2006). "Development of dry process caisson method for maintenance of submerged harbor structure." Journal of the Korean Institute of Navigation and Port Research, Vol. 30, No. 6, pp. 447-455 (In Korean). crossref(new window)

6.
Shin, E. S. (2014). Compressive strength estimation technique of underwater concrete structures using both rebound hardness and ultrasonic pulse velocity, M.S., Sungkyunkwan Univ (in Korean).

7.
Shin, E. S., Lee, J. S., Park, S. H. and Han, S. H. (2014). "Compressive strength estimation technique of underwater concrete structures using both rebound hardness and ultrasonic pulse velocity values." Journal of the Korea institute for Structural Maintenance Inspection, Vol. 18, No. 4, pp. 118-125 (In Korean). crossref(new window)

8.
Smith, A. P. (1986). Underwater nondestructive testing of concrete: an evaluation of technique, Naval Civil Engineering Laboratory, Port Hueneme, California.

9.
Yi, J. H., Hang, S. H. and Park, W. S. (2011). "Nondestructive testing for concrete harbour facilities." Journal of the Korea institute for structural maintenance inspection, Vol. 15, No. 3, pp. 4-10 (In Korean).