E3S Web Conf.
Volume 195, 20204th European Conference on Unsaturated Soils (E-UNSAT 2020)
|Number of page(s)||5|
|Section||Special Session on the Reuse of Waste Geomaterials|
|Published online||16 October 2020|
Mechanical properties and microstructure of soils treated with a vinyl-based copolymer
1 LEMTA, UMR 7563 Université de Lorraine – CNRS, France
2 Ege Üniversitesi, Turkey
3 Università degli Studi di Napoli Federico II, Italy
* Corresponding author: Olivier.Cuisinier@univ-lorraine.fr
In soil stabilisation, the use of alternative products to lime or cement has been proposed. However, the effects of these additives, of various origins, on soil behaviour and stabilizing mechanisms are not well understood. Thus, the aim of this paper is to characterize the modification of the mechanical behaviour and microstructure of two soils after treatment with one of those product, a vinyl based copolymer. After treatment, both materials were compacted up to their maximum dry density. The mechanical behaviour of the materials as a function of the curing conditions, suction and water content was first determined. In a second step, the alteration of the microstructure by the treatment product was assessed. The results showed that the treatment permitted to significantly improve the strength of the tested soils. Moreover, the efficiency of the product increases when the soil is dried. However, the Young modulus is not significantly modified by the treatment. Microstructural reorganization after co-polymer addition has been detected by SEM technique for kaolin samples, whereas no modification have been observed for silt samples.
© The Authors, published by EDP Sciences 2020
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