CRACK PROPAGATION STUDIES IN A PAVEMENT SLAB

Considering that crack tip undergoes plastic deformation and in turn absorbs strain energy, Griffith's Theory of brittle fracture has been modified. Making use of a semiempirical model with this modification, the crack propagation in a pavement slab caused by ambient shrinkage stresses was studied. To complement the results, a 4 ft. by 2 ft. by 1 in. thick soil cement slab was investigated in the laboratory. In comparing the results in two different soils (cohesive and granular), the paper reports that the crack pattern in cohesive soils tends to form a nearly polygonal shape. The rate of crack propagation, however, is faster in granular soils than in cohesive soils.

• Supplemental Notes:
  • International Symposium titled "New Horizons in Construction Materials" held by Lehigh University, Pa on Nov 1-3, 1976.
• Corporate Authors:

  Envo Publishing Company, Incorporated

  P.O. Box 2326
  Lehigh Valley, PA  United States  10001

  Envo Publishing Company, Incorporated

  P.O. Box 2326
  Lehigh Valley, PA  United States  10001
• Authors:
  • George, K P
  • Cheng, P C
• Conference:
  • International Symposium titled "New Horizons in Construction Materials" held by Lehigh University, Pa on Nov 1-3, 1976.
• Publication Date: 1976

Media Info

• Features: References;
• Pagination: p. 567-581
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Cohesive soils; Cracking; Deformation curve; Energy absorption; Granular soils; Mathematical models; Pavement cracking; Pavements; Plastic deformation; Roads; Slabs; Soil cement
• Uncontrolled Terms: Crack propagation; Models
• Subject Areas: Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00158330
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Conf Paper
• Files: TRIS
• Created Date: Oct 13 1977 12:00AM