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정종홍(Jung Jonghong),김홍종(Kim Hongjong),최영철(Choi Youngchul),이명석(Lee Myungseok) 한국토목섬유학회 2011 한국토목섬유학회 학술발표회 Vol.2011 No.4
The expanded polystyrene(EPS) method is known as representative light-weight embankment countermeasures for road construction on very soft clayey deposits due to its lightness and good engineering properties. This method has been adopted for backfills of bridge since 1991 in Korea. However, long-term performance of EPS embankment after construction and its effect on the pavement above has not been evaluated yet. In the present paper, a case of pavement fatigue above EPS block due to vibration 15 years later after construction, differential settlement at transitionzone of EPS, and fire on EPS were discussed. The deflection at EPS section measured by a series of FWD tests was about 3 times than that of ordinary earthwork zone. A large deflection is regarded as to cause fatigue damage on pavement. It needs to investigate relationship between fatigue damage of pavement and vibration of EPS bock as well as its dynamic characteristics of EPS.