Research on Mix Processes and Bending Properties of Modified Polypropylene Fiber Reinforced Cement-Based Materials

LYU Haoping; LI Yanjie; HAO Yuanhao; ZHU Chongji; LIU Shixi

doi:10.13204/j.gyjzG22042524

Volume 53 Issue 2

Feb. 2023

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LYU Haoping, LI Yanjie, HAO Yuanhao, ZHU Chongji, LIU Shixi. Research on Mix Processes and Bending Properties of Modified Polypropylene Fiber Reinforced Cement-Based Materials[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(2): 211-217,71. doi: 10.13204/j.gyjzG22042524

Citation:

LYU Haoping, LI Yanjie, HAO Yuanhao, ZHU Chongji, LIU Shixi. Research on Mix Processes and Bending Properties of Modified Polypropylene Fiber Reinforced Cement-Based Materials[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(2): 211-217,71. doi: 10.13204/j.gyjzG22042524

Citation:

LYU Haoping, LI Yanjie, HAO Yuanhao, ZHU Chongji, LIU Shixi. Research on Mix Processes and Bending Properties of Modified Polypropylene Fiber Reinforced Cement-Based Materials[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(2): 211-217,71. doi: 10.13204/j.gyjzG22042524

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Research on Mix Processes and Bending Properties of Modified Polypropylene Fiber Reinforced Cement-Based Materials

doi: 10.13204/j.gyjzG22042524

School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China

Received Date: 2022-04-25
Available Online: 2023-05-25
Publish Date: 2023-02-20

Abstract

Abstract

The modified polypropylene fiber reinforced cement-based materials prepared by two kinds of mixing processes (pre-fiber mixing method and post-fiber mixing method) were tested to study the fiber dispersion and working performance of fresh mortar under different mixing times and mixing rates, and the compression test and flexural test of its castables at different ages were carried out. Based on the above test results, a reliable mixing process was established, and the flat plate specimens were poured. The effects of the length and content of modified polypropylene fibers on the bending properties were studied by four-point-bending test. The results showed that the mixing processes of post-fiber mixing method and slow mixing method were reliable.When the fiber length was 12 mm, the strength was the largest, and when the fiber length was 20 mm, the ductility, toughness and residual strength were the best. When the fiber length was the same, the bending properties would increase with the increase of fiber content. This study can provide an experimental basis for the preparing fiber-reinforced cement-based materials by modified polypropylene fibers.
- fiber reinforced cement-based materials,
- modified polypropylene fiber,
- mixing process,
- bending properties

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References(17)

References

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