Effect of Metal Lathe Waste Addition on the Mechanical and Thermal Properties of Concrete

Małek, Marcin; Kadela, Marta; Terpiłowski, Michał; Szewczyk, Tomasz; Łasica, Waldemar; Muzolf, Paweł

doi:10.3390/ma14112760

Cited by 20 publications

(19 citation statements)

References 25 publications

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“…Moreover, according to the EOTA [ 2 ] and Eurocode 2 [ 3 ], fastenings made in fiber-reinforced concrete elements were designed and implemented as typical concrete substrates. This does not correspond to the actual operating conditions of fasteners, which are often installed in elements made of fiber-reinforced concrete [ 10 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. An example is fiber-reinforced concrete floors [ 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Load Capacity of Screw Anchor Installed in Concrete Substrate Reinforced with Steel Fibers Depending on Fiber Content

Konieczny,

Dudek,

Kukiełka

2024

Materials

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Pull-out strength tests conducted on screw anchors in uncracked concrete substrates of the C25/30 class are presented in this article. The destructive force for anchor–concrete fasting was tested, and in the next step, the average pull-out strengths of screw anchors in concrete substrates with and without the addition of steel fiber were determined. Currently, the pull-out strengths of anchors in fiber-reinforced concrete substrates are defined as for unreinforced concrete substrates. Therefore, pull-out tests were performed for screw anchors in fiber-reinforced concrete substrates. Fiber contents of 10, 20, 30, and 50 kg/m3 were used. An increase in the load capacity of screw anchors in a fiber-reinforced concrete substrate was demonstrated in a pull-out test compared to base samples without fibers. The coefficient related to the actual fastening behavior of a screw anchor in the fiber-reinforced concrete substrate was determined. It was assumed that a coefficient of 13.10 should be adopted. This was the lowest value obtained for the load capacity in this study for screw anchors in a fiber-reinforced concrete substrate.

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Section: Introductionmentioning

confidence: 99%

Load Capacity of Screw Anchor Installed in Concrete Substrate Reinforced with Steel Fibers Depending on Fiber Content

Konieczny,

Dudek,

Kukiełka

2024

Materials

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“…A fabricação de aço está intimamente ligada à produção de resíduos de usinagem, um torno pode gerar aproximadamente de 3 a 4 quilos desse resíduo por dia de trabalho. A título de exemplo, de acordo com o Investment Company Institute, a produção total desse tipo de resíduo já atingiu cerca de 1.200 milhões de toneladas anualmente [2].…”

Section: Introductionunclassified

Análise mecânica de concretos com substituições parciais de agregados por limalha de aço

Mello,

Altoé,

Gdirão

et al. 2024

Matéria (Rio J.)

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RESUMO O presente trabalho teve por objetivo apresentar os resultados obtidos para o comportamento mecânico do concreto considerando a substituição parcial dos teores dos agregados por resíduo industrial provenientes da usinagem de aço. Conhecidas as propriedades mecânicas dos metais, considera-se que a substituição parcial dos agregados em concretos por resíduos dessa natureza possa atuar não apenas como um fator de melhora no comportamento do material, mas também como uma maneira de se produzir uma destinação eficiente ao resíduo em questão, além de que, a substituição de agregados por materiais alternativos contribui para mitigar a escassez desses recursos. Dessa forma, o trabalho justifica-se pelas suas potencialidades em relação à engenharia de materiais cimentícios e impactos ligados à sustentabilidade das edificações. Para se investigar o material foram adotados três teores de substituições em relação ao peso de cimento, 5%, 10% e 15%, sendo efetuados ensaios para obtenção da absorção de água e consistência, além das resistências à tração indireta, compressão e módulo de elasticidade estático. A que a substituição dos agregados por resíduo de usinagem leva a maior qualidade do concreto produzido além de acréscimo de resistências, essa melhora se mostrou mais expressiva para a substituição do agregado miúdo, com aumento na resistência média à compressão e tração de até 73,70% e 73,71% respectivamente, obtendo-se através de aproximações não lineares o teor ótimo próximo a 12%, para as substituições de agregado graúdo teores acima dos estudados tendem a ser mais interessantes.

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“…Waste materials can also be used as fibers in concrete and cement composites [ 15 ], increasing their strength properties. As Małek et al showed in [ 16 ], the addition of metal lathes waste from postproduction of mechanical components increases the mechanical properties of concrete. Sobuz et al [ 17 ] emphasized the advisability of producing UHPCs with the use of commonly available materials and without special curing conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Aggregate Type on Properties of Ultra-High-Strength Concrete

2022

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In this work, we present an analysis of natural fine aggregates’ influence on the properties of ultra-high-strength concrete. The reference concrete mix was made of natural sand with the addition of fly ash and microsilica. It was assumed to obtain concrete with a very high strength without the addition of fibers and without special curing conditions, ensuring the required workability of the concrete mix corresponding to the consistency of class S3. The reference concrete mix was modified by replacing sand with granite and basalt aggregate in the same fractions. Five series of concrete mixes made with CEM I 52.5R cement were tested. Experimental investigations were carried out regarding the consistency of the concrete mix, the compressive strength, the flexural strength and the water absorption by hardened concrete. A comparative analysis of the obtained results indicated significant improvement in the concrete strength after the use of basalt aggregate. The strength of the concrete series based on basalt aggregate, BC1, allowed it to be classified as ultra-high-performance concrete. Concrete based on sand, SC1, was characterized by the lowest compressive and flexural strength but obtained the best workability of the mix and the lowest water absorption. The results presented in the paper, show a significant influence of the type of aggregate used on the mechanical and physical properties of ultra-high strength concrete.

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Effect of Metal Lathe Waste Addition on the Mechanical and Thermal Properties of Concrete

Cited by 20 publications

References 25 publications

Load Capacity of Screw Anchor Installed in Concrete Substrate Reinforced with Steel Fibers Depending on Fiber Content

Load Capacity of Screw Anchor Installed in Concrete Substrate Reinforced with Steel Fibers Depending on Fiber Content

Análise mecânica de concretos com substituições parciais de agregados por limalha de aço

Effect of Aggregate Type on Properties of Ultra-High-Strength Concrete

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