Study of the mechanical properties, durability, and microstructure of an ultra-high-performance fiberreinforced concrete containing recycled fillers

• Autorzy: Lekoui Mohamed Tahar , Kechkar Chiraz , Hebhoub Houria , Messaoudi Karima , Alsayadi Hamid , Benhalilou Mohamed Ichem

Identyfikatory

DOI

10.2478/msp-2024-0027

• Języki publikacji: EN

Abstrakty

EN

In this article, a specific mix design of the ultrahigh-performance fiber-reinforced concrete (UHPFRC) was proposed and applied for Algerian materials that are currently in use. In the absence of a general mix design that limits their use and reuses waste materials, the present mix design can help reduce the high manufacturing cost of this type of concrete and make it more environmentally friendly. Here, we have looked for a reference mix design based on local ordinary aggregates, and then, we introduced the recycled fillers from ceramic waste and granulated blast furnace slag into our mix design, and we studied their effects on the properties of the fresh state (density, workability, and air content) and in the hardened state, namely compressive and flexural tensile strength,modulus of elasticity, ultrasonic and sclerometer resistance, as well as durability tests (capillary and immersion absorption, porosity, and chemical resistance). Themicrostructure analysis was carried out using scanning electron microscopy, complemented by energy-dispersive X-ray spectroscopy. Comparison of the results of UHPFRC using ceramic waste and slag fillers with the control UHPFRC after 28 days shows an increase in compressive strengths of approximately 8 and 7%, respectively, aswell as an increase in flexural tensile strengths of 17 and 2%, respectively. In addition, there was a decrease in porosity of 17 and 42%, respectively. The results reveal that it is possible to produce UHPFRC based on local materials and improve its performance, durability, and microstructure with recycled fillers.

Słowa kluczowe

EN

UHPFRC; waste ceramic; blast furnace slag; mix design; performance; durability; microstructure

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2024
• Tom: Vol. 42, No. 3
• Strony: 1--16
• Opis fizyczny: Bibliogr. 33 poz., rys., tab.

Twórcy

autor

Lekoui Mohamed Tahar

• LMGHU Laboratory, Department of Civil Engineering, Faculty of Technology, University of 20 August 1955 SkikdaSkikda 21000, Algeria

autor

Kechkar Chiraz

• LGCH Laboratory, Department of Civil Engineering and Hydraulic, Faculty of Science and Technology, University of 8 May 1945 GuelmaGuelma 24000, Algeria

autor

Hebhoub Houria

• LMGHU Laboratory, Department of Civil Engineering, Faculty of Technology, University of 20 August 1955 SkikdaSkikda 21000, Algeria

autor

Messaoudi Karima

• LMGHU Laboratory, Department of Civil Engineering, Faculty of Technology, University of 20 August 1955 SkikdaSkikda 21000, Algeria

autor

Alsayadi Hamid

• LMGHU Laboratory, Department of Civil Engineering, Faculty of Technology, University of 20 August 1955 SkikdaSkikda 21000, Algeria

autor

Benhalilou Mohamed Ichem

• TCT Batna 2, Department of Technology, University Batna 2, Batna 5000, Algeria

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