| Title |
Compressive Strength and Ultrasonic Pulse Velocity Properties of Small-Diameter Core Specimens Based on Diameter and Coarse Aggregate Volume |
| Authors |
이정택(Lee, Jeong-Taek) ; 이전호(Lee, Jeon-Ho) ; 김윤미(Kim, Yun-Mi) ; 이상수(Lee, Sang-Soo) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.6.299 |
| Keywords |
Small-Diameter Core; Ultrasonic Pulse Velocity; Compressive Strength; Coarse Aggregate; Coarse Aggregate Amount |
| Abstract |
Both non-destructive testing and core sampling methods are used to estimate the compressive strength of concrete. Among these, core
sampling provides more accurate measurements. However, extracting a core sample, typically 100 to 150 mm in diameter, can compromise
the structure's durability and potentially damage reinforcing steel. Although previous studies have explored the use of smaller cores, 50 mm
or less in diameter, further research is needed to develop correction methods that reduce variations in strength measurements. This study
examined how core diameter and coarse aggregate content affect the compressive strength of small-diameter core specimens,100 mm or less.
It also evaluated the potential of using ultrasonic pulse velocity to estimate the amount of coarse aggregate within the specimen. Results
showed that both core diameter and coarse aggregate content influence compressive strength. Additionally, ultrasonic pulse velocity proved
effective in indirectly assessing coarse aggregate content in small-diameter cores. |