Construction Environment and Materials

[CS2-16] STRENGHT CHARACTERISTICS OF PS ASH-TREATED SAND FOR APPLICATION AS BACKFILL SAND AROUND UNDERGROUND PIPES AND MANHOLES

*maliki otieboame Djandjieme Otieboame¹, Kimitoshi Hayano², Hiromoto Yamauchi³ (1. Yokohama national university , 2. Faculty of Urban Innovation, Yokohama National University, 3. DOMI Environmental Solutions)

Keywords:Paper sludge ash, backfill sand, long-term, strength, re-excavation