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Article

Use of Waste from Granite Gang Saws to Manufacture Ultra-High Performance Concrete Reinforced with Steel Fibers

Polytechnic School of Engineering—University of Oviedo, Campus de Viesques, 33203 Gijón, Spain
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Academic Editor: Lorena Zichella
Appl. Sci. 2021, 11(4), 1764; https://doi.org/10.3390/app11041764
Received: 28 January 2021 / Revised: 8 February 2021 / Accepted: 12 February 2021 / Published: 17 February 2021
(This article belongs to the Special Issue Recycling Applications of Construction Materials)
The purpose of this study is to analyze the feasibility of using the ultra-fine waste coming from the granite cutting waste gang saws (GCW-GS) to manufacture ultra-high performance, steel-fiber reinforced concrete (UHPFRC). These machines cut granite blocks by abrasion using a steel blade and slurry containing fine steel grit. The waste generated by gang saws (GCW-GS) contains up to 15% Fe2O3 and up to 5% CaO. This is the main difference from the waste produced by diamond saws (GCW-D). Although this waste is available in large quantities, there are very few studies focused on recycling it to manufacture any kind of concrete. In this study, the replaced material was the micronized quartz powder of natural origin used in the manufacture of UHPRFC. The properties tested include workability, density, compressive strength, elasticity modulus, flexural strength, and tensile strength. The final conclusion is that this waste can be used to manufacture UHPFRC with a better performance than that from diamond saws given that there is an improvement of their mechanical properties up to a replacement of 35%. Even for higher percentages, the mechanical properties are within values close to those of control concrete with small decreases. View Full-Text
Keywords: ultra-high performance concrete; waste; granite gang saws; steel fibers; compressive strength; flexural strength; elasticity modulus ultra-high performance concrete; waste; granite gang saws; steel fibers; compressive strength; flexural strength; elasticity modulus
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MDPI and ACS Style

Gayarre, F.L.; Suárez González, J.; Lopez Boadella, I.; López-Colina Pérez, C.; Serrano López, M. Use of Waste from Granite Gang Saws to Manufacture Ultra-High Performance Concrete Reinforced with Steel Fibers. Appl. Sci. 2021, 11, 1764. https://doi.org/10.3390/app11041764

AMA Style

Gayarre FL, Suárez González J, Lopez Boadella I, López-Colina Pérez C, Serrano López M. Use of Waste from Granite Gang Saws to Manufacture Ultra-High Performance Concrete Reinforced with Steel Fibers. Applied Sciences. 2021; 11(4):1764. https://doi.org/10.3390/app11041764

Chicago/Turabian Style

Gayarre, Fernando L., Jesús Suárez González, Iñigo Lopez Boadella, Carlos López-Colina Pérez, and Miguel Serrano López. 2021. "Use of Waste from Granite Gang Saws to Manufacture Ultra-High Performance Concrete Reinforced with Steel Fibers" Applied Sciences 11, no. 4: 1764. https://doi.org/10.3390/app11041764

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