Case Study on Soft Soil Improvement using Innovative and Cost-Effective Reinforcing Techniques


  • Endra Susila Soil Mechanics Laboratory, Geotechnical Engineering Research Group, Dept. of Civil Engineering, Dept. of Civil Engineering, Bandung Institute of Technology, Jalan Ganesa 10 Bandung 40132
  • Fico Agrensa Soil Mechanics Laboratory, Bandung Institute of Technology, Jalan Ganesa 10 Bandung 40132, Indonesia



This paper describes, discusses and compares three new innovations of reinforcement systems for soft soils: (a) a combination of gridded matrass and piles of bamboo, (b) a combination of matrass and piles of bamboo, and (c) a group of mini piles connected by small H-beams with a compacted top layer to hold the top mini piles. First, illustrations and applications of the three types of reinforcement are described from three full-scale field works. Technical bases for the three types are presented, while technical comparisons are discussed next. Finally, conclusions are developed. The case studies, analysis results, and full-scale fieldwork verifications show that the three reinforcement systems have worked properly. Each system has its own advantages and disadvantages in terms of construction duration and cost, capability/effectiveness and material availability, especially in rural areas.


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Irsyam, M & Krisnanto, S., Full Scale Test and Analysis of Bamboo Pile-Mattres Reinforcement System for Road Embankment on Soft Soils in Tambak Oso Surabaya (Text in Indonesian), Forum Teknik Sipil, XVIII, 2008.

Weech, C.N. & Lister, D.R., Highway Embankment Construction Over Soft Soils in The Lower Mainland of British Columbia, Annual Conference of the Transportation Association of Canada, Vancouver, British Columbia, 2009.