Improvement and strengthening of massive

Recommended Prerequisites

Soil Mechanics, Foundations theory,  Engineering Geology.

Teaching Methods

I) Lectures (*)

Use a audiovisuals means to explain the main theories and principals of the subjects. In addition, some problems are solved.

 

(*) When the option is tutorial lectures, these are used to discuss the subjects with the students.

Learning Outcomes

To provide advanced formation in terms of conception, design and construction of some works in soils/rocks. Thus, the some methods of improvement and reinforcement of soils/rocks are explained, in order to give the students tools to help him to take decisions. The methods are selected regarding of the future research work.

Work Placement(s)

No

Syllabus

Introduction to improvement methods: design queries, execution control.
Methods to teaching:
- Soil compaction: vibrocompaction, blasting compaction, dynamic compaction.
- Methodology of construction: preloading, staged construction, use of light materials.
- Drainage: Vertical drains, vacuum.
- Lowering of water level: drainage, electro-osmosis.
- Injections.
- Thermal improvement: heating and freezing
- Chemical improvement.
- Reinforcement of soils: sand/gravel columns, concrete piles, Deep Mixing columns, geossynthetics.

Head Lecturer(s)

António Alberto Santos Correia

Assessment Methods

Continuous
Individual work with presentation and public discussion: 100.0%

Bibliography

Some papers of the “Ground Improvement Journal -Proceedings of the ICE”.

Ground Improvement Case Histories (2005), Edited by Buddhima Indraratna and Jian Chu, Nanyang, Elsevier.

Balasubramaniam, A. S. (1985)- Recent developments in ground improvement techniques: proceedings of the international symposium held at Asian Institute of Technology, Bangkok.

Hight, D. W., Jardine, R. J., and Gens, A. (1987). “Embankments on soft clays.” Bulletin of the Public Works Research Center, Chap. 2, The Public Works Research Center of Greece, Athens, Greece.

Leroueil, S., Magnan, J. P., and Tavenas, F. (1990). Embankments on soft clays, Ellis Horwood, England.