Predicting the erosion rate of chemically treated soil using a process simulation apparatus for internal crack erosion / Buddhima Indraratna in Journal of geotechnical and geoenvironmental engineering, Vol. 134 N° 6 (Juin 2008)  

Predicting the erosion rate of chemically treated soil using a process simulation apparatus for internal crack erosion [texte imprimé] / Buddhima Indraratna, Auteur ; Thevaragavan Muttuvel, Auteur ; Hadi Khabbaz, Auteur . - 2010 . - pp. 837–844.
Geotechnical and geoenvironmental engineering
Langues : Anglais (eng)
in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N° 6 (Juin 2008) . - pp. 837–844

Mots-clés :	Soil stabilization Cements Shear stress erosion compaction Predictions Chemicals Cracking
Résumé :	Chemical stabilization is an effective ground improvement technique for controlling erosion. Two stabilizers, lignosulfonate and cement, were used to study how effectively they could stabilize erodible silty sand collected from Wombeyan Caves, NSW, Australia. To conduct this research, four dosages of cement (0.5, 1, 1.5, and 2%) and four dosages of lignosulfonate (0.1, 0.2, 0.4, and 0.6%) by dry weight of soil were selected. All treated and untreated soil specimens were compacted to 90 and 95% of their maximum dry density to study the effect of compaction level on erodibility. The erosion characteristics of treated and untreated soil samples were investigated using a process simulation apparatus for internal crack erosion designed and built at the University of Wollongong. The findings of this study indicated that both chemical stabilizers increased the resistance to erosion because of their cementing properties. It was also found that the critical shear stress increased linearly with the amount of stabilizer, and the coefficient of soil erosion decreased as a power function of the critical shear stress.
En ligne :	http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A6%2883 [...]