THE STRESS-STRAIN CURVE FOR CEMENT- AND LIME-TREATED MATERIALS

In this report a general stress-strain curve for cement- and lime-treated materials is proposed. It is suggested that a flexural test be used for pavement design work and a test method to obtain the stress-strain curve is described. The elastic modulus and allowable strain in the material can be obtained from this curve. Available knowledge on the Poisson's ratio of cement-treated materials is summarized. Using layered elastic theory it is shown that the stress and strain developed during loading is virtually independent of the Poisson's ratio and it is suggested that 0,35 be used in structural pavement design work. Suggested elastic moduli and allowable strain values for cement-treated crusher-run, and cement- and lime-treated natural base and subbase materials are given. (a). This paper was presented at the 2nd conference on asphalt pavements for southern Africa, Durban, 29th July - 2nd August, 1974. See also IRRD abstracts nos. 216602-216619. /TRRL/

• Corporate Authors:

  Council for Scientific & Industrial Res S Africa

  P.O. Box 395
  Pretoria,   South Africa 
• Authors:
  • Otte, E
• Publication Date: 0

Language

• English

Media Info

• Features: References; Tables;
• Pagination: 14 p.

Subject/Index Terms

• TRT Terms: Calcium oxide; Cement; Cement treated soils; Charts; Conferences; Crusher run aggregates; Deflection; Deformation; Deformation curve; Loads; Modulus of elasticity; Pavement base course; Pavement design; Poisson distributions; Poisson ratio; Soil stabilization; Stresses; Subbase materials; Tests
• Uncontrolled Terms: Cement treated bases
• Geographic Terms: South Africa
• Old TRIS Terms: Poissons ratio
• ITRD Terms: 4758: Cement; 6486: Chart; 8525: Conference; 4565: Crusher run aggregate; 5586: Deflection; 5595: Deformation; 4574: Lime; 5567: Load; 5919: Modulus of elasticity; 3055: Pavement design; 5924: Poisson's ratio; 2961: Roadbase; 3689: Soil stabilization; 8103: South Africa; 5575: Stress (in material); 6255: Test
• Subject Areas: Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 00131439
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: RR 174 R&D Rept.
• Files: ITRD, TRIS
• Created Date: May 14 1976 12:00AM