Investigation on the fracture behavior of foamed concrete

Falliano, Devid; Domenico, Dario De; Sciarrone, Antonino; Ricciardi, Giuseppe; Restuccia, Luciana; Ferro, Giuseppe Andrea; Tulliani, Jean‐Marc; Gugliandolo, Enrico

doi:10.1016/j.prostr.2019.08.196

Cited by 4 publications

(2 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, studies dealing with the fracture behavior of foamed concrete are relatively few [15]- [17], and confined to classical foamed concrete. 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.…”

Section: Introductionmentioning

confidence: 94%

Influence of biochar additions on the fracture behavior of foamed concrete

Falliano

Domenico

Sciarrone

et al. 2019

Frattura Ed Integrità Strutturale

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 94%

Influence of biochar additions on the fracture behavior of foamed concrete

Falliano

Domenico

Sciarrone

et al. 2019

Frattura Ed Integrità Strutturale

Self Cite

View full text Add to dashboard Cite

show abstract

“…The density grade of foamed concrete significantly affects compressive strength, water absorption, and drying shrinkage (Amran et al, 2015;Hilal et al, 2015;Falliano et al, 2019). However, there are fewer studies on the relationship between the corrosion resistance of steel rebar and the density grade of foamed concrete.…”

Section: Effect Of Density Grade On Corrosion Of Steel Rebarmentioning

confidence: 99%

Steel rebar corrosion and corrosion-induced cracking in reinforced foamed concrete

et al. 2022

View full text Add to dashboard Cite

This study investigated the corrosion behavior of steel rebar in foamed concrete and the effects of water-cement ratio, fly ash, and fiber on reinforced foamed concrete’s corrosion rate and crack width. It was found that the corrosion rate of steel rebar and crack width of foamed concrete increased slowly with time and then developed rapidly, finally growing slowly. The higher the density of foamed concrete, the stronger the corrosion resistance of steel rebar. The best corrosion resistance of steel rebar in foamed concrete is achieved when the water-cement ratio is 0.5, fly ash and fiber are 20% and 0.6%, respectively.

show abstract