Use of the brazilian test and frost sensitivity test for determining the aptitude for earthworks of difficult soils stabilized by special lime-based binder
Use of the brazilian test and frost sensitivity test for determining the aptitude for earthworks of difficult soils stabilized by special lime-based binder
Strength, durability and stability of earthworks during service depend on the quality of soils they are made of, the execution technology and maintenance. Often, earthworks have to be built using poor quality soils that needs improvement or stabilization by using binders. For establishing the modifications brought by binder mixing and the long- term characteristics of the improved materials, laboratory tests are used, many of them being adapted, as the resulting material is sometimes away of the untreated soil properties. Therefore, research is still conducted for determining the best way of testing the properties of improved soils, especially considering the extensive use nowadays of these techniques. The paper, which continues a series of articles published on the subject, will determine the degree of sensitivity to frost in comparison with the durability performances to freeze – thaw cycles. The research studied the performances during time of a clay treated by special lime – based binder (3 and 4 %) by analysing the mechanical and frost sensitivity behaviour. Sample to be tested where produced in laboratory using 2 compaction energies – normal and modified Proctor. The mechanical behaviour during the time was studied by determining the compression strength and the indirect tensile strength (Brazilian test), while the frost sensitivity was established based on the swelling coefficient and the consistency state of the soil after freezing.
Loretta Batali; Gabriela Andries; C. Gregoire
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
D - Current and new construction methods
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