A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Applying Geofoam to Construct Bridge Approaching Embankments on Soft Ground in Ho Chi Minh City
In Vietnam, geofoam is little known as a construction material for highway embankments. Geofoam is a lightweight, closed-cell, and rigid plastic foam material. Bridge approaching embankments can be constructed using geofoam blocks as a fill material directly on soft ground. This study investigated the field performance of a geofoam as a fill material of a bridge approaching embankment on soft ground in Ho Chi Minh City. A full-scale bridge abutment test was constructed using a domestic geofoam at the experimental site. The full-scale embankment test was experienced by 10 cycles of a 300-kN truck. The results indicate that the domestic geofoam with a density of 21 kg/m3 (EPS-22) worked properly for the bridge embankment as the fill material on soft ground under the truck load. The truck load diminished markedly throughout the concrete slab and reduced sharply in the embankment height. Elastic vertical displacement at the surface of the concrete slab measured at a distance of 0.5 m from the rear wheel was 5–6 mm under 9 cycles of the truck. The concrete slab distributed the truck load on a larger area than an area calculated by the assumption that the contact area of a wheel load distributes across the concrete slab by an angle of 45°.
Applying Geofoam to Construct Bridge Approaching Embankments on Soft Ground in Ho Chi Minh City
In Vietnam, geofoam is little known as a construction material for highway embankments. Geofoam is a lightweight, closed-cell, and rigid plastic foam material. Bridge approaching embankments can be constructed using geofoam blocks as a fill material directly on soft ground. This study investigated the field performance of a geofoam as a fill material of a bridge approaching embankment on soft ground in Ho Chi Minh City. A full-scale bridge abutment test was constructed using a domestic geofoam at the experimental site. The full-scale embankment test was experienced by 10 cycles of a 300-kN truck. The results indicate that the domestic geofoam with a density of 21 kg/m3 (EPS-22) worked properly for the bridge embankment as the fill material on soft ground under the truck load. The truck load diminished markedly throughout the concrete slab and reduced sharply in the embankment height. Elastic vertical displacement at the surface of the concrete slab measured at a distance of 0.5 m from the rear wheel was 5–6 mm under 9 cycles of the truck. The concrete slab distributed the truck load on a larger area than an area calculated by the assumption that the contact area of a wheel load distributes across the concrete slab by an angle of 45°.
Applying Geofoam to Construct Bridge Approaching Embankments on Soft Ground in Ho Chi Minh City
Nguyen, Phong D. (author) / Tran-Nguyen, Hoang-Hung (author) / Phan, Vinh P. (author)
Geo-Congress 2022 ; 2022 ; Charlotte, North Carolina
Geo-Congress 2022 ; 29-38
2022-03-17
Conference paper
Electronic Resource
English
Applying Geofoam to Construct Bridge Approaching Embankments on Soft Ground in Ho Chi Minh City
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