PROPERTIES OF FINE-GRAINED FIBER-REINFORCED CONCRETE MADE FROM INDUSTRIAL WASTE FOR 3D PRINTING
Authors
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L. Aruova
L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
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A. Tleubaeva
L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
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L. Zhaksylykova
L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
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D.Zh. Artykbaev
M. Auezov South Kazakhstan Research University, Shymkent, Kazakhstan
DOI:
https://doi.org/10.55956/NAVZ7958Keywords:
3D printing, fiber-reinforced concrete, Portland cement, fly ash, polypropylene fibers, strength, durabilityAbstract
This paper presents a study on the development of effective fine-grained fiber-reinforced concrete for 3D construction printing. Portland cements of grades PC 400-D0 and PC 500-D0, partially replaced with fly ash, were used as binders. To increase crack resistance and plasticity, various types of polymer fibers were added to the composition, including polypropylene, polyethylene, and nylon. The aim of the study was to optimize the composition of the concrete mix to ensure the necessary fluidity and dimensional stability while maintaining high strength. The tests conducted included determining rheological properties, compressive and tensile strength, density, and plastic strength. It was found that the use of PC 500-D0 cement in combination with polypropylene fibers increases compressive strength to 50 MPa and tensile strength by 20% compared to the control compositions. The addition of fly ash reduced cement consumption and improved the workability of the mixture. The results demonstrate the promise of the developed mixtures for additive construction technologies, ensuring increased durability and reduced cost of building materials.
