Rational Approach to the Evaluation of Soils for Low-Volume Roads

Given the paramount importance of soils in unsurfaced or thinly surfaced roads, it seems worthwhile to evaluate soils on the basis of both pavement and soil mechanics. Such a rational approach is used to discuss the mechanical behavior of a residual soil found in southern Brazil. The experimental program included tests traditionally used in pavement engineering, such as grain size distribution, Atterberg limits, compaction, California bearing ratio, resilient modulus, and permanent deformation under repeated loading. The influence of water content and compaction degree on soil strength and stiffness was quantified. In addition, direct shear tests were performed to define shear strength parameters that were used to verify layer safety against failure. Water retention curves, which relate soil suction to saturation degree, were used to analyze permanent deformation evolution under repeated loads. The interpretation of test results confirmed the suitability of the suggested approach for evaluating soils for low-volume road construction.

• Record URL:
  https://doi.org/10.3141/2205-10
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=Rational+Approach+to+the+Evaluation+of+Soils+for+Low-Volume+Roads&author=W.+Nunez&author=J.+Ceratti&author=L.+Bressani&author=R.+Pinheiro&author=V.+Peraca&author=M.+Nogueira&publication_year=2011
• Availability:
  • Find a library where document is available. Order URL: http://www.trb.org/Main/Blurbs/LowVolume_Roads_2011_Volume_3_165780.aspx
• Authors:
  • Nunez, Washington Peres
  • Ceratti, Jorge Augusto Pereira
  • Bressani, Luiz Antonio
  • Pinheiro, Rinaldo Jose Barbosa
  • Peraca, Vinicius
  • Nogueira, Matheus Lemos
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Maps; References; Tables;
• Pagination: pp 73-78
• Monograph Title: Low-Volume Roads 2011, Volume 3
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2205
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Atterberg limits; California bearing ratio; Grain size (Geology); Low volume roads; Modulus of resilience; Moisture content; Repeated loads; Residual soils; Rutting; Saturated soils; Shear strength; Soil compaction; Soil mechanics; Soil suction; Stiffness
• Uncontrolled Terms: Soil strength
• Geographic Terms: Brazil
• Subject Areas: Geotechnology; Highways; Materials; Pavements; I42: Soil Mechanics;

Filing Info

• Accession Number: 01345899
• Record Type: Publication
• ISBN: 9780309167215
• Files: TRIS, TRB, ATRI
• Created Date: Jul 28 2011 9:12AM