一般・規格・基準①

[21-5-3-01] Trends of Proficiency Test in Questionnaire -Examples of Test for Particle Size Distribution of Soils and Unconfined Compression Test of Soils-

*Hiroshi Nakazawa¹, Keiichi Numakura², Wakasugi Mamoru³, Kenji Watanabe⁴, Kazuaki Hioki⁵ (1. National Research Institute for Earth Science and Disaster Resilience, 2. Kawasaki Geological Engineering, 3. Kiso-Jiban Consultants, 4. The University of Tokyo, 5. Osaka Institute of Technology)

Keywords:Proficiency test, Questionnaire survey, Test standard