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http://dx.doi.org/10.14346/JKOSOS.2012.27.1.063

Microwave Moisture Measurement of Fine Aggregate in RMC Industry  

Choi, Young-Choel (Advanced Technology Team, Korea Conformity Laboratories)
Lee, Bong-Chun (Advanced Technology Team, Korea Conformity Laboratories)
Moon, Gyu-Don (Advanced Technology Team, Korea Conformity Laboratories)
Son, Young-Jung (Advanced Technology Team, Korea Conformity Laboratories)
Publication Information
Journal of the Korean Society of Safety / v.27, no.1, 2012 , pp. 63-69 More about this Journal
Abstract
Ready-mixed concrete(RMC) has been a major construction materials for infrastructures. However, RMC with poor quality is reported to be social issue since it directly user's safety and convenience. Because the properties of concrete as a construction material are greatly influenced by the variation of water content, to control water accurately is the most efficient method for the quality control in RMC industry. In this study, the automatic measurement technology of fine aggregate was developed by using the microwave moisture measurement. For the various conditions of fine aggregate such as moisture, temperature and pressure, the calibration curve of moisture measurement was obtained by using oven-dry method. From the infield and outfield test, it can be obtained that the accuracy of microwave moisture measurement is very high and the automatic system of microwave moisture measurement is very convenient and useful for quality control in RMC Industry.
Keywords
microwave; moisture measurement; ready mixed concrete; quality control;
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