Tensile Fracture and Fatigue of Cement Stabilized Soilby William W. Crockford, Texas A&M Univ, College Station, TX, USA,
Dallas N. Little, Texas A&M Univ, College Station, TX, USA,
Abstract: Portland cement stabilized soil is widely used as a base material for roads, airfields, and similar structures. Cracking in this material is studied using fracture mechanics concepts. Fracture toughnesses in the form of the plane strain stress intensity factor and in the form of the J-integral are used as primary descriptors in the study. A simple power law is used in the case of fatigue loading to describe the relationship between the change in crack length per load cycle and the fluctuation in the stress intensity factor. Approximate relationships are developed which define the relationship between the physical and chemical nature of the material and its engineering usage. These relationships consider cement content, compactive effort, and fracture toughness.
Subject Headings: Cracking | Soil cement | Base course | Construction materials | Material mechanics | Load factors | Material failures | Material tests
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