Centrifuge modelling of dessication cracks in soils

This paper presents centrifuge modelling results of cracked soil to determine the influence of the cracks on the bearing capacity of a circular shallow foundation. The saturation degree decreases as the clayey soil is exposed to desiccation, water evaporates from the surface, the soil shrinks, and higher tensile stresses are produced within the soil allowing the formation of cracks. Soil models with artificial cracks were performed using the IFSTTAR's geotechnical centrifuge equipped with new modelling tools. The reduced scale models were constructed for simulating a desiccated soil profile. The bearing capacity results do not show a relation with the position of the load application in the soil columns, acting the cracked soil as a whole massif. Additionally, a proportional influence of the centrifuge environmental conditions with the soil resistance is found using the cone penetration test (CPT).

• Record URL:
  • http://madis-externe.ifsttar.fr/exl-php/DOC00023650
• Authors:
  • LOZADA, Catalina
  • CAICEDO, Bernardo
  • THOREL, Luc
• Conference:
  • SEC 2015 - Symposium International Retrait et gonflement des sols - Climat et construction
  • Location: Marne la Vall�e
  • Date: 2015-0-0
• Publication Date: 2015

Language

• English

Media Info

• Media Type: Digital/other
• Pagination: 10p

Subject/Index Terms

• TRT Terms: Soil mechanics; Unsaturated soils
• ITRD Terms: 5755: Mecanique des sols; 4136: Sol non sature
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 01688923
• Record Type: Publication
• Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Amenagement et des Reseaux (IFSTTAR)
• Contract Numbers: 11J023, Fondations et interactions sol-structure
• Files: ITRD
• Created Date: Dec 18 2018 10:19AM