Correlations between stress, strain, crack parameters and permeation characteristics of cementitious systems for durability assessments

Title: Correlations between stress, strain, crack parameters and permeation characteristics of cementitious systems for durability assessments
Author(s): Aparna Nagaraj, Nataliya Hearn
Paper category : conference
Book title: International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur
Editor(s): J. Weiss, K. Kovler, J. Marchand, and S. Mindess
Print-ISBN: None
e-ISBN: 2912143926
Publisher: RILEM Publications SARL
Publication year: 2004
Nb references: 30
Language: English

Abstract: Permeability of hydrated cementitious systems is one of the most influential properties affecting its durability and serviceability, since it governs the ingress of various agents that deteriorate the intrinsic microstructure. The effect of these intrinsic changes is not represented clearly when the parameters used for durability assessments masks the actual microstructural alterations and give only “qualitative” results. The present study is therefore carried out for critical review of stress, strain and crack parameters used for correlating the permeability changes. The experimental stress, strain and crack data reported in literature are analyzed to determine the “best” parameter that represents the damage in a true sense and thus provide a strong basis for damage assessments. However, the study reveals no such single “best” parameter and the choice of the parameter seems to depend on the nature of test carried out, condition of the materials, etc. Consequently there is a need for the damage-durability relationships to be based on the properties of the altered microstructure that would reflect the true extent of damage.

Online publication: 2004-03-25
Classification: Applications
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143926.070