Influence of biochar additions on the fracture behavior of foamed concrete

Devid Falliano; Dario De Domenico; Antonino Sciarrone; Giuseppe Ricciardi; Luciana Restuccia; Giuseppe Ferro; Jean-Marc Tulliani; Ernesto Gugliandolo

doi:10.3221/IGF-ESIS.51.15

Influence of biochar additions on the fracture behavior of foamed concrete

Authors

Devid Falliano University of Messina, Italy https://orcid.org/0000-0001-6676-9187
Dario De Domenico University of Messina, Italy https://orcid.org/0000-0003-1279-9529
Antonino Sciarrone University of Messina, Italy https://orcid.org/0000-0001-7456-6662
Giuseppe Ricciardi University of Messina, Italy
Luciana Restuccia Politecnico di Torino, Italy https://orcid.org/0000-0002-6999-0466
Giuseppe Ferro Politecnico di Torino, Italy https://orcid.org/0000-0002-0622-4203
Jean-Marc Tulliani Politecnico di Torino, Italy https://orcid.org/0000-0003-2419-4383
Ernesto Gugliandolo G. Gugliandolo s.r.l., Messina, Italy

DOI:

https://doi.org/10.3221/IGF-ESIS.51.15

Keywords:

Foamed concrete, Fracture energy, Biochar, CMOD, Curing conditions, Lightweight concretes

Abstract

The present study concerns the experimental investigation of foamed concretes with 1600 kg/m³ 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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Published

29-11-2019

Issue

Vol. 14 No. 51 (2020): January 2020

Section

SI: IGF25 – International Conference 2019

License

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Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

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How to Cite

Influence of biochar additions on the fracture behavior of foamed concrete. (2019). Frattura Ed Integrità Strutturale, 14(51), 189-198. https://doi.org/10.3221/IGF-ESIS.51.15