CHEMO-MECHANICAL EFFECTS IN MORTAR BEAMS SUBJECTED TO WATER HYDROLYSIS

Reliable predictions of the long-term behavior of concrete structures require both an accurate knowledge of the various degradation mechanisms that affect the structures over their lifetime and the use of simulation tools. Leaching caused by aggressive water can be responsible for a loss of mechanical properties and stability of concrete structures. This paper focuses on coupled chemomechanical effects on concrete structures subjected to aggressive water inducing calcium leaching. Experimental investigations on mortar bending beams and their analysis are detailed. The response of leached mortar beams is deduced from these tests. It is found that the stiffness of mortar decreases, along with its strength, as the chemical attack progresses. The size effect on geometrically similar bending beams at various stages of degradation is studied experimentally. Because of leaching, the brittleness of the structures is increased and the fracture energy decreases.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Le Belego, C
  • Gerard, B
  • Pijaudier-Cabot, G
• Publication Date: 2000-3

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 266-272
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 126
  • Issue Number: 3
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Aggressive waters; Beams; Bending; Brittleness; Calcium; Cement paste; Chemical processes; Concrete; Concrete structures; Degradation (Hydrology); Elasticity (Mechanics); Equilibrium (Mechanics); Experiments; Fracture mechanics; Hydrolysis; Leaching; Mechanical properties; Mortar; Porosity; Stiffness; Strength of materials; Structural deterioration and defects
• Subject Areas: Bridges and other structures; Design; Highways; Hydraulics and Hydrology; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 00789010
• Record Type: Publication
• Contract Numbers: CMS-9713944, CRC 98/01 EG04, CMS-9872379
• Files: TRIS
• Created Date: Mar 26 2000 12:00AM