Fiber Reinforced Foamed Mortar with Multiple Cracks in Flexure

Title: Fiber Reinforced Foamed Mortar with Multiple Cracks in Flexure
Author(s): Motoyoshi Yamamoto, Yoshihisa Honda, Atsuhisa Ogawa, Keitetsu Rokugo
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: 75 - 82
Total Pages: 8
Nb references: 4
Language: English

Abstract: Ductile lightweight mortars were produced by adding prefoamed bubbles to fiber reinforced mortar with different water cement ratios of mortar, foam contents and PVA fiber sizes to investigate their load-displacement curves in flexure, as well as their density, air content, Young's modulus and compressive strength. Multiple fine cracks were observed on specimens in flexure. As the air content increased, the loads at the first crack and the peak decreased and the number of cracks increased. The large foam content did not adversely affect the multiple cracking behavior of such mortar. Microscope observation of PVA fibers and air bubbles on the fracture surfaces of specimens after flexure tests revealed that fibers tended to rupture with a lower air content whereas the matrix tended to fail with a higher air content. Keywords: fiber reinforced foamed mortar, multiple cracks, flexure, ECC

Online publication: 2005-05-15
Classification: Standards for Materials and Testing
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143942.009