Engineered Soils: What Are They and How are They Used In Canada

Tim Smith, Doug Race, Shenglin Wang, Eskedil Melese, Hassan Baaj, Susan Tighe

In the proceedings of: GeoOttawa 2017: 70th Canadian Geotechnical Conference; 12th joint with IAH-CNC

Session: Experimental Soil Mechanics III

ABSTRACT: This document identifies the three types of engineered soils currently used in Canada including: cement modified soils (CMS), cement treated bases (CTB) and full depth reclamation with hydraulic binder (FDR-HB) or foamed asphalt. The purpose of utilizing the three technologies will be presented, as well as, the type of material each process is best suited for and the amount of hydraulic binder typically used in the procedure. Explanation will be given on how the soil characteristics are enhanced through fine fraction improvement including: cation exchange, particle restructuring, cementitious hydration and pozzolanic reaction. The benefits of utilizing these technologies are also discussed, as well as, identification of Canadian sites where each type of solution has been used. The final portion of the paper identifies the research currently underway in Canada to evaluate the performance of CMS and FDR. Cet article identifie les trois types de sols renforcés actuellement utilisés au Canada, y compris: les sols stabilisés au ciment (CMS), les graves-ciment (CTB) et le retraitement de chaussée au liant hydraulique (FDR-C) et à la mousse du bitume. Le but de l'utilisation des trois technologies sera présenté, ainsi que le type de matériau pour lequel chaque procédé convient le mieux et la quantité de liant hydraulique généralement utilisé dans la procédure. Une explication sera donnée sur la façon dont les caractéristiques du sol sont améliorées grâce à une amélioration des fractions fines, notamment: échange de cations, restructuration des particules, hydratation cimentaire et réaction pozzolanique. Les avantages de l'utilisation de ces technologies seront également discutés, ainsi que les recherches actuellement en cours au Canada pour évaluer les performances de CMS et de FDR-C. La partie finale du document permettra d'identifier certains sites canadiens où les procédures ont été utilisées.

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Cite this article:
Tim Smith; Doug Race; Shenglin Wang; Eskedil Melese; Hassan Baaj; Susan Tighe (2017) Engineered Soils: What Are They and How are They Used In Canada in GEO2017. Ottawa, Ontario: Canadian Geotechnical Society.

@article{geo2017Paper808,author = Tim Smith; Doug Race; Shenglin Wang; Eskedil Melese; Hassan Baaj; Susan Tighe,title = Engineered Soils: What Are They and How are They Used In Canada,year = 2017}