Durability on the Fracture Parameters of Crack-Repaired High Performance Fiber Reinforced Cementitious Composites

Title: Durability on the Fracture Parameters of Crack-Repaired High Performance Fiber Reinforced Cementitious Composites
Author(s): Yoshinori Kitsutaka, Masaki Tamura
Paper category : conference
Book title: International RILEM Workshop on High Performance Fiber Reinforced Cementitious Composites in Structural Applications
Editor(s): G. Fischer and V. C. Li
Print-ISBN: 2-912143-93-4
e-ISBN: 2912143942
Publisher: RILEM Publications SARL
Publication year: 2006
Pages: 155 - 164
Total Pages: 10
Nb references: 3
Language: English

Abstract: An important issue related to maintenance of the domestic stock of concrete structures is the evaluation of the degree of performance recovery and subsequent long-term performance retention brought about by repair. Many papers pointed out the effectiveness to use the High Performance Fiber Reinforced Cementitious Composites (HPFRCC) for improving the durability of structure. However, few studies have been conducted on the evaluation of mechanical performance retention and the crack propagation resistance of repaired HPFRCC under deterioration action. In this study, the performances on the recovery of fracture toughness and on the effectiveness of durability maintenance for crack-repaired HPFRCC were investigated. Affects of the air content, matrix strength, fiber properties, crack repairing and the freezing and thawing durability test conditions on fracture properties were evaluated by using tension softening evaluation system. The specimen of non-fiber concrete on which the crack was repaired by resin showed extremely low toughness by the freezing and thawing test. Toughness and durability performance of specimen were improved by containing air, vinylon fiber, because of the effect of reducing the stress by inner water pressure. Information on improving fracture toughness and effectiveness of durability maintenance of crack-repaired HPFRCC was obtained.

Online publication: 2005-05-15
Classification: Durability
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143942.017