Structural behavior of RC beams containing EAF slag as recycled aggregate: Numerical versus experimental results

Domenico, Dario De; Faleschini, Flora; Pellegrino, Carlo; Ricciardi, Giuseppe

doi:10.1016/j.conbuildmat.2018.03.128

Cited by 56 publications

(32 citation statements)

References 41 publications

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“…Previous studies by the authors demonstrated that the fracture behavior of foamed concrete is markedly affected by the curing conditions [18], [19], especially at the lower densities. Another interesting aspect concerns the development of enhanced variant of lightweight concretes that incorporate by-products or slags such as electric arc furnace slag [20]- [22] or foundry slag [23], which has motivated the present research work. This paper aims to extend the knowledge on the mechanical characteristics and the fracture behavior of foamed concrete when slags are introduced in the mix design as micro-aggregates.…”

Section: Introductionmentioning

confidence: 99%

Influence of biochar additions on the fracture behavior of foamed concrete

Falliano

Domenico

Sciarrone

et al. 2019

Frattura Ed Integrità Strutturale

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The present study concerns the experimental investigation of foamed concretes with 1600 kg/m 3 density that incorporate biochar additions in the mix. A series of small notched beams are prepared to determine the fracture energy in CMOD (crack mouth opening displacement) mode and the mechanical properties in terms of flexural and compressive strength. Besides the evaluation of such properties for classical foamed concrete, the influence of the addition of biochar in the lightweight cementitious paste is comparatively investigated. Two different concentrations of biochar are analyzed, namely 2% and 4% of the cement weight, and two different curing conditions are studied, namely in air and in water at controlled temperature for 28 days. The results demonstrate that better fracture behavior are obtained with 2% biochar and air curing conditions. The biochar additions in moderate concentrations (e.g. 2%) seems to make the fracture surface more tortuous, thus justifying the numerical outcomes, and does not impair the flexural strength. Further microstructural investigation is underway to confirm the experimental observations. This research paves the way for a promising construction material that is more environmentally friendly and sustainable than traditional materials used in the building industry.

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Section: Introductionmentioning

confidence: 99%

Influence of biochar additions on the fracture behavior of foamed concrete

Falliano

Domenico

Sciarrone

et al. 2019

Frattura Ed Integrità Strutturale

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“…As the section is square, one can obtain a modified or equivalent cube load applied by square plates with the same dimensions as the cross section of the prism. According to Neville [5,14,17,28]the resistance of the modified specimen, would be 5% higher than the normal cube specimen of the same size, because of the lateral containment due to excesses in relation to the hub. In this study an average relationship is obtained, since the test was performed using 2 for each of the specimens tested for flexural strength.…”

Section: Compression Strength Testsmentioning

confidence: 99%

“…There are several solidification-stabilization techniques, such as: the absorption of materials, which commonly coagulate and precipitate to subsequently pass the solid phases or use cement to generate concrete blocks containing this organic waste. There are authors who have used this procedure with toxic waste from metals [16,17], or waste from the steel industry Norma UNE 83491 EX.…”

Section: Introductionmentioning

confidence: 99%

Mechanical-strength characteristics of concrete made with stainless steel industry wastes as binders

Cintas

Barnett²,

Pérez-García

et al. 2019

Construction and Building Materials

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“…Following the positive results achieved in smallscale specimens, some research works have been carried out to study also the structural behavior of full-scale structural elements made of reinforced concrete (RC), including EAF slag at varying replacement ratio inside the mixes (e.g. Faleschini et al, 2017a;Faleschini et al, 2017b;Faleschini et al, 2017c;De Domenico et al, 2018). The above literature has evidenced that EAF slag concrete can be suitably applied in gravity structures, where its heavy-weight and high strength result as positive features.…”

Section: Introductionmentioning

confidence: 99%

Structural Reliability of Bridges Made with EAF Concretes

Zanini¹

2020

XV International Conference on Durability of Building Materials and Components. eBook of Proceedings

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The development of sustainable concretes is becoming an emerging issue in civil construction sector. The use of Electric Arc Furnace (EAF) slag aggregates in the production of concretes is one way to fulfill sustainability goals. Past research demonstrated a significant increase of mechanical properties of EAF concretes when compared with ones made with natural aggregates (NA); however, at the same time, their use implies also an increase of self-weight loads. The present contribution aims to investigate the reliability of structural systems realized with EAF concretes, with special emphasis to bridge structures. Two different bridge types, considered as case-study examples, are designed considering ordinary concrete mixes, and subsequently, a reliability analysis is run for each EAF concrete class in order to investigate the variation of structural safety margins related to the use of the sustainable EAF concretes in replacement to the ordinary NA concrete mix.

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Structural behavior of RC beams containing EAF slag as recycled aggregate: Numerical versus experimental results

Cited by 56 publications

References 41 publications

Influence of biochar additions on the fracture behavior of foamed concrete

Influence of biochar additions on the fracture behavior of foamed concrete

Mechanical-strength characteristics of concrete made with stainless steel industry wastes as binders

Structural Reliability of Bridges Made with EAF Concretes

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