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Quality Grading of Concrete Soil Erosion Control Dam in the Aspect of Unconfined Concrete Strength by Surface-Wave Technique  

Lee, Chang-Woo (Korea Forest Research Institute)
Joh, Sung-Ho (Deparkment of Civil & Environmental Engineering, Chung-Ang University)
Park, Ki-Hyung (Korea Forest Research Institute)
Kim, Min-Sik (Korean Association of Soil and Water Conservation)
Yoon, Ho-Joong (Korea Forest Research Institute)
Raja Ahmad, Raja Hassanul (Deparkment of Civil & Environmental Engineering, Chung-Ang University)
Publication Information
Journal of Korean Society of Forest Science / v.101, no.3, 2012 , pp. 412-425 More about this Journal
Abstract
Concrete Soil Erosion Control Dam, which blocks flow of debris flow in torrential stream, are reported to lose expected functions due to structural failure and collapses, caused by poor construction, material deterioration and external impacts. In this paper, an integrity assessment technique for debris barriers was proposed, which allows preliminary detection of problems inherent in debris barriers. The proposed integrity assessment technique is a non-destructive method based on SASW method, one of surface-wave tests. In this paper, a practical procedure and analysis guidelines in applying the SASW technique to debris barrier was proposed and its validity was verified using five decrepit debris barriers older than 20-year old. As a result, the SASW method was validated for the reliable grade evaluation method for concrete soil erosion control dam, and the resulting grades turned out to agree with the results determined by Sabang Associations.
Keywords
soil erosion control dam; concrete; integrity assessment; NDT; stability check;
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