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http://dx.doi.org/10.14481/jkges.2016.17.3.13

Characteristics of Shear Waves in Controlled Low Strength Material with Curing Time  

Han, Woojin (School of Civil, Environmental and Architectural Engineering, Korea University)
Lee, Jong-Sub (School of Civil, Environmental and Architectural Engineering, Korea University)
Byun, Yong-Hoon (Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign)
Cho, Samdeok (KOREA INSTITUTE of CIVIL ENGINEERING and BUILDING TECHNOLOGY)
Kim, Juhyong (KOREA INSTITUTE of CIVIL ENGINEERING and BUILDING TECHNOLOGY)
Publication Information
Journal of the Korean GEO-environmental Society / v.17, no.3, 2016 , pp. 13-19 More about this Journal
Abstract
The ultrasonic waves for monitoring concrete materials have been used to investigate the setting and hardening process of concrete. This paper presents the application of bender elements for monitoring the hardening properties of Controlled Low Strength Material (CLSM) and the characterization of shear waves in CLSM according to curing time. To ensure the early age properties and flow, the CLSM consists of CSA cement, sand, silt, water, fly ash, and accelerator. In addition, three different type specimens according to fine contents are mixed. A couple of bender elements are installed at the wall of measurement cell and the CLSM specimen are prepared at the measurement cell for 28 days. Experimental results show that the resonant frequency and shear wave velocities increase with an increase in the curing time, regardless of the fine contents. Up to ten hours, the amplitudes of shear waves also increase, and the resonant frequency and shear wave velocities at the same time increase as the fine contents increase. The shear wave measurement technique using the bender elements may be effectively used to evaluate the hardening properties of CLSM along the curing time.
Keywords
Bender elements; Curing time; Controlled Low Strength Material (CLSM); Shear waves;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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