1. Quality Control and Technical Support Manager, Asia Cement Products Company Limited, 23/124 Soi Soonvijai, Rama 9 Rd., Bangkok 10310, Thailand (corresponding author).
2. Researcher, Earthquake Disaster Mitigation Research Division, National Research Institute for Earth Science and Disaster Resilience, 1501-21 Nishikameya, Mitsuta, Sijimicho, Miki, Hyogo 673-0515, Japan.
3. Geotechnical Engineer, CH2M, 1100 NE Circle Blvd., Corvallis, OR 97330.
4. Kearney Professor and Dean, College of Engineering, Oregon State Univ., 101 Covell Hall, Corvallis, OR 97331.