Modeling of tensile behavior of mortar immersed in solutions including chloride ions

Author(s): Taito Miura, Yasuhiko Sato
Paper category: Conference
Book title: 2nd International conference on Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. Van Breugel, Wei Sun, Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Pages: 937 - 945
Total Pages: 8
Language: English

Abstract: 
In this study, meso-scale mortar specimens were immerged in NaCl and CaCl₂ solutions for 180 days and then three-point bending tests of the specimens and chemical analyses were conducted so as to determine tensile softening curves from load-displacement curves using a back analysis and to clarify how the amount of hydrate affects tensile characteristics. Consequently, it was found that the elastic modulus and the tensile strength decreased as the amount of hydrates CH and C- S-H decreased. Besides, based on the experimental results, the model formula of elastic modulus, tensile strength, fracture energy and tensile softening curve that can consider the amount of hydrate change were proposed.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00