Influence of Binder-Sand Ratio on Fiber Reinforced Cementitous Composites Performance

Author(s): Chen Yanwen, Qi Wei, Wu Kewei
Paper category: Proceedings
Book title: 1st International Conference on UHPC Materials and Structures
Editor(s): Caijun Shi and Dehui Wang
ISBN: 978-2-35158-164-3
e-ISBN: 978-2-35158-165-O
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 147-152
Total Pages: 6
Language: English

Abstract: The fiber-reinforced cementitious composites is a kind of randomly distributed short fiber reinforced cementitious composites which has stress-hardening and more seams stable cracking characteristics, that has been widely used in the construction engineering field. In this paperˈthe binder-sand ratio was 1:0.75, 1:1, 1:1.25 and 1:1.5, the water-binder ratio was 0.3, 0.35, 0.40 and 0.45, content of polyvinyl alcohol (PVA) fiber was 0.9%, 1.2%, 1.5% and 1.8%,
polycarboxylate was added. The effect of binder-sand ratio and water-binder ratio on strength chloride penetration height and microstructure was analyzed. The results showed that the binder-sand ratio had a great influence on the performance of fiber-reinforced cementitious composites. When the binder-sand ratio was 1:1.25, fiber-reinforced cementitious composites reached
maximum compressive strength and low chloride penetration height. Slurry-aggregate ratio comprehensively characterized the effects of water-binder ratio and the binder-sand ratio on performance, when the slurry-aggregate ratio was 1.3-1.6, composites reached minimum chloride penetration height. Microscopic analysis showed that: When the binder-sand ratio was 1:1.25, the microstructure had a great influence on the mechanical properties and the chloride ion penetration of the material.

Online publication: 2016
Publication type : full_text
Public price (Euros): 0.00