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Journal of Geotechnical Engineering

Portland Cement for A-4 group Soil Stabilization

  1. Diego Barbero
  2. Leandro Serraiocco
  3. Andrea Maroni
  4. Sandra Peyrot

Abstract

In the geotechnical practice, the stabilization of soil using cement is a necessary procedure when soilsdo not meet the geotechnical requirements i.e. they show low bearing capacity so it’s necessary toimprove their engineering properties generally adding lime or cement, or moisture of lime andcement. The aim of this research focuses on the description of a geotechnical laboratory tests plan forA-4 Group Soils according to AASTHO Soils Classification, generally consisting of gravel, sand, andsilt that will be treated with cement in order to find both the minimum cement content required toharden this material and the optimum moisture content. This is research been developed in twophases: a) the identification and characterization of physical-mechanical properties of natural soil;b) the study of some experimental cement-soil moistures by laboratory tests in order to find theoptimum moisture content of soil, water, and cement. This research shows that the adding of 3% ofPortland cement in the soil can furnish a suitable combined stabilization process of these soils.Finally, in support of geotechnical engineering, a quick geotechnical laboratory plan for stabilizationwith cement and a detailed analyses of mechanical behavior obtained on soil-cement moisture hasbeen reported.

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