Modification of Polypropylene Fiber Applied in Concrete Via Silane Coupling Agent Treat

Xiaohui Li

doi:10.6919/

Authors

Xiaohui Li China Nuclear Construction Concrete Co., LTD, Xi’an, Shaanxi, P. R. China

DOI:

https://doi.org/10.6919/

Keywords:

Polypropylene fiber, surface modification, silane coupling agent, dispersion, concrete.

Abstract

Polypropylene fibers have potential for widespread application in industrialized concrete, and they have significant practical significance for the strength and waterproofing performance of the material. However, the dispersion performance of polypropylene fibers in concrete or aqueous solutions, as well as in mortar is poor, and they are prone to agglomeration and caking, which in turn adversely affects the strength of the concrete. This paper examines the influence of the treatment with coupling agents on the surface state of the dispersion of polypropylene fibers, and analyzes and studies their applications in aqueous solutions, mortars, and concrete.

Downloads

Download data is not yet available.

References

[1] Sun, J., Liu, X., Wang, C., et al. (2024). Study on properties of cement-based composites with silane coupling agent modified polypropylene fiber. Bulletin of the Chinese Ceramic Society, 43(7), 2355–2362.

[2] Tran, T., & Zhang, J. (2022). Pullout and flexural performance of silane groups and hydrophilic groups grafted polypropylene fibre reinforced UHPC. Construction and Building Materials, 324, 126674. https://doi.org/10.1016/j.conbuildmat.2022.126674

[3] Goldfein, S. (1965). Fibrous reinforcement for Portland cement. Modern Plastics, 42(8), 156–160.

[4] Liu, H., Fei, Y., Sun, S., et al. (2024). Research on hydrophilic modification performance of polypropylene fiber treated by KH570 silane coupling agent. Contemporary Chemical Research, (13), 52–54.

[5] Guo, L., & Yang, Q. (2024). Surface activation of polypropylene fiber via vinyl monomer grafting for cementitious composite applications. Polymers, 16(11), 1645. https://doi.org/10.3390/polym16111645

[6] Zollo, R. F. (1984). Collated fibrillated polypropylene fibers in FRC. In Fiber reinforced Concrete International Symposium (pp. 397–409). American Concrete Institute.

[7] Mindess, S., & Vondran, G. (1988). Properties of concrete reinforced with fibrillated polypropylene fibers under impact loading. Cement and Concrete Research, 18(1), 109–115. https://doi.org/10.1016/0008-8846(88)90127-5