Effect of Polypropylene Fiber on Compression Behavior and Permeability of Cemented Construction Waste Slurry

Abstract

Abstract: One-dimensional compression tests and permeability tests were conducted to investigate the effects of fibercontent (0% to 1.2%, mass fraction, the same below) and length (3 mm to 18 mm) on compression behavior and permeability of cemented construction waste slurry with high water content. The related mechanisms responsible for changes caused by addition of polypropylene fiber were discussed. The test results indicate that the addition of fiber induces a decrease in the volumetric strain and permeability coefficient of cemented construction waste slurry with 0.5% fiber. Meanwhile, the reduction in the volumetric strain decreases with the increase of the fiber length when the initial water content of tested specimen is 145%, and there is no significant influence of the fiber length on the volumetric strain of specimens with initial water content of 174%. On the other hand, an increase in the volumetric strain and permeability coefficient is observed for specimens with longer fiberthan short fiber (＜12 mm) under the same external pressure as the fiber content increases to 1.2%. In this research, the appropriate fiber length and content is not more than 12 mm and 1.2%, respectively.

Key words: cemented construction waste slurry, high water content, polypropylene fiber, compression behavior, permeability coefficient

CLC Number:

TU44

BAI Chuanzhen, JI Feng, XU Guizhong, SONG Miaomiao, ZHU Peng, WU Zhenwei. Effect of Polypropylene Fiber on Compression Behavior and Permeability of Cemented Construction Waste Slurry[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(9): 3039-3045.

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