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http://dx.doi.org/10.5345/JKIBC.2015.15.1.035

Experimental Improvement of the Dropping Test for Evaluating the Appropriate Level of Water Content Ratio in Rammed Earth Method  

Lee, Jong-Kook (Department of Architectural Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of the Korea Institute of Building Construction / v.15, no.1, 2015 , pp. 35-42 More about this Journal
Abstract
Although the interest for earth architecture has been expanded and settled as a part of modern architecture, precisely calculating the ratio of water content in practice is still difficult and the calculation is based on empirical analysis yet. This causes many problems in durability and maintenance of earthen architecture. Therefore, this study investigated to find the easiest way to correctly calculate the appropriate level of water content ratio (AWCR), which can be used in practice. Until now, the workers have checked the AWCR based on their own experience with popular but vague manuals. On this awareness, we studied the several testing methods and found the dropping test which uses the pattern of shape after the sample is dropped. In this point, we studied and developed the definite testing method in terms of process, and shape discrimination. Also we suggest the test recording sheet by using the cobalt chloride($CoCl_2$) whose color is instantly changed when contacts with the moisture. It is believed that this result can help improving the quality and durability of the earthen architecture using the rammed earth method and the efficiency in practice.
Keywords
rammed earth method; appropriate water content ratio; dropping test; optimum micro-filler effect; cobalt chloride;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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