1. JCCT
  2. Ch&ChT Vol. 19, No. 4, 2025
  3. Study of the Influence of Polyamide Filler on the Physical and Mechanical Properties of High-Strength Concrete

Study of the Influence of Polyamide Filler on the Physical and Mechanical Properties of High-Strength Concrete

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Orest Vakhula1, Volodymyr Moravskyi1, Oleksandr Grytsenko1, Diana Kindzera1
Affiliation: 
1 Lviv Polytechnic National University, 12 St. Bandera St., Lviv 79013, Ukraine orest.m.vakhula@lpnu.ua
DOI: 
https://doi.org/10.23939/chcht19.04.735
AttachmentSize
PDF icon full_text.pdf2.46 MB
Keywords: 
cement system
high-strength concrete
polyamide
polyamide fiber
polyamide waste
strength
Abstract: 
The article investigates the influence of various polyamide fillers (granulated polyamide PA-6, polyamide fibers, and polyamide waste) on the physico-mechanical properties of high-strength concrete. It has been established that surface modification of the fillers using inorganic salt solutions (CaCl₂, Al₂(SO4)3, and Ca(NO3)2) can affect the hydration processes of the cement matrix and enhance interfacial interactions, which in turn improve the strength and durability of the concrete. The highest compressive strength (fcs₂ = 72.8 MPa; fcs₂₈ = 106.4 MPa) was achieved using 10 wt.% of PA-6 granules and 1.0 wt.% of fibers modified in a 30% CaCl₂ solution. This combination provides effective reinforcement of the concrete structure, reduces the likelihood of crack formation, and contributes to improved performance characteristics. Additionally, the use of polyamide waste as a filler represents a promising approach to polymer material recycling with a positive environmental impact.
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