Research on the durability of polypropylene fiber concrete under freeze-thaw damage

Author(s): Chenfei Wang and Ditao Niu
Paper category: conference
Book title: Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. van Breugel, Wei Sun and Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Publication year: 2012
Pages: 205 - 210
Total Pages: 6
Language: English

Abstract: In the cold snowy region of China, buildings usually expose to the marine environment and deicing salt. It is observed that the harmful environment accelerates the corrosion of steel structure and result in the concrete deterioration, especially under freezing-thawing conditions. In the present study, the resistance to frost damage of Polypropylene Fiber(PPF) concrete was investigated under the salty condition. The factors of fiber volume were from 0 to 0.5%. The scaling of concrete, the chloride penetration in concrete and the microstructure in concrete were determined. The results indicated that the scaled mass and relative dynamic modulus of elasticity loss decrease with the volume of fiber increasing, C1⁻ concentration has a much higher content near the sample surface, adding 0.1% PPF into concrete has the prefect resistance of deicer-frost scaling. More fibers can delay the development of cracks, but that will reduce the inner density of concrete.

Online publication: 2012-05-16
Publication Type: full_text
Public price (Euros): 0.00