Author(s)
Sato Sho, Advanced Course of Interdisciplinary Technology Development, National Institute of Technology, Gifu College, Gifu Prefecture, Japan
Asuka Yamashita, Graduates of Department of Architecture, National Institute of Technology, Gifu College, Gifu Prefecture, Japan
Ayumu Yasue, Institute of Technology, Shimizu Corporation, Tokyo Metropolis, Japan
Shigeru Fujimori, Department of Architecture, School of Engineering, Daido University, Aichi Prefecture, Japan
Toshitsugu Inukai, Department of Architecture, National Institute of Technology, Gifu College, Gifu Prefecture, Japan

Abstract
In this study, we conducted electrical resistivity tests and small-diameter drilling tests on mortar surface layers using water-cement ratio and unit water content as experimental factors, and we investigated the effect of electrical resistivity on the drilling speed. Results showed that water content had a considerable effect on electrical resistivity depending on the water-cement ratio. Further, an increase in water-cement ratios tended to increase the drilling speed, which indicated a highly positive correlation. Moreover, the quality of the mortar surface layer could be estimated by the drilling speed even when the difference in the water-cement ratios was approximately 5%. However, the effect of the unit water content was small and did not have any specific relationship with electric resistivity, water content, or drilling speed.

Keywords
mix proportion, mortar, electric resistivity, water content, small-diameter drilling test, drilling speed

Cite this paper
Sato Sho, Asuka Yamashita, Ayumu Yasue, Shigeru Fujimori, Toshitsugu Inukai, Effect of Electrical Resistivity of Mortar Surface Layer on Drilling Speed Using Mix Proportion, SCIREA Journal of Civil Engineering and Building Construction. Vol. 8 , No. 1 , 2023 , pp. 34 - 48 . https://doi.org/10.54647/cebc560117

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