Characterisation Of Expansive Soils And Use In Design

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Date
2011-11
Authors
Zumrawi,Magdi M. E.
Journal Title
Journal ISSN
Volume Title
Publisher
uofk
Abstract
This paper is concerned with the study of swelling behaviour and strength characteristics of expansive soils in order to develop new design charts. Expansive soil samples with high plasticity have been compacted at a wide range of water content and different dry densities. A new characterisation concept was developed. This is called the soil state factor which was developed for the initial and soaking state. The initial state factor is a combination of the dry density, water content and void ratio while the soaking state factor is a combination of the saturated dry density, saturated water content and amount of swelling during the soaking period. On basis of this concept, characterisation charts for swelling and initial state behaviour as well as strength and initial state behaviour were developed. The use of these charts in pavement design, evaluation and field compaction control on expansive soil areas is demonstrated.
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Keywords
Characterisation,Expansive,Soils,Design
Citation