Mechanical characterization of cement-based materials containing biochar from gasification

Sirico, Alice; Bernardi, Patrizia; Belletti, Beatrice; Malcevschi, Alessio; Dalcanale, Enrico; Domenichelli, Ilaria; Fornoni, Paolo; Moretti, Emanuele

doi:10.1016/j.conbuildmat.2020.118490

Cited by 73 publications

(20 citation statements)

References 19 publications

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“…Other stud ies have also shown that the porous na ture of biochar re sults in high wa ter ab sorp tion and conse quen tial low work a bil ity [ 38 , 132 ]. Nonethe less, Sirico et al [ 132 ] were able to use su per plas ti cizer to over come the detri men tal ef fect of the in cor po ra tion of biochar on the work a bil ity of ce men ti tious compos ites.…”

Section: 1 Workabilitymentioning

confidence: 99%

Recent advancements in the use of biochar for cementitious applications: A review

Akinyemi

Adesina

2020

Journal of Building Engineering

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With in creas ing pop u la tion and ris ing de mands for im proved built en vi ron ment, there is an ex pected in crease in green house gas emis sion from the con struc tion in dus try. Car bon diox ide emis sion lev els are fast ap proaching a tip ping point which could lead to ir re versible cli mate change. The earth's ca pa bil ity to neu tralise the CO 2 emis sions through the nat ural car bon cy cle has been over stretched. There fore it is im per a tive to adopt technolo gies that are able to cap ture and se quester CO 2 in or der to can cel out their re lease from in dus trial ac tiv ities such as the con struc tion and build ing in dus try. This is im por tant so that ce ment-based ma te r ial pro ductions' car bon foot print can be re duced dras ti cally for a pos i tive change to take place in the cli mate. Biochar holds great promise as an ef fec tive CO 2 sorp tive ma te r ial in ce ment-based ap pli ca tions rel a tively sim i lar to its con ven tional use for soil amend ment. Ac tu ally, frag mented re searches on biochar as an ad mix ture in ce men titious ma te ri als have been con ducted. Based on this logic, this re view placed enor mous em pha sis on col lat ing in for ma tion from re cent stud ies on biochars from agro-sources used as an ad mix ture in ce ment-based ap pli cations. Sim i larly, the re view gave up-to-date knowl edge about the sources of the bio mass and the pro duc tion processes. Con clu sively, the pos i tive ef fects of biochar for car bon se ques tra tion on some prop er ties of the var ious ce men ti tious ap pli ca tions were high lighted.

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Section: 1 Workabilitymentioning

confidence: 99%

Recent advancements in the use of biochar for cementitious applications: A review

Akinyemi

Adesina

2020

Journal of Building Engineering

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“…Since the admixtures designed differ from standard cement mortars, a proper mixing procedure, based on "method of concrete equivalent mortar" (MBE) was applied, see [42,43] for further details. Mortars were cast into 40×40×160 mm prisms and then the samples was cured in water for 14 and 50 days before testing.…”

Section: Mortarsmentioning

confidence: 99%

Biochar-based cement pastes and mortars with enhanced mechanical properties

Sirico

Bernardi

Belletti

et al. 2020

Frattura Ed Integrità Strutturale

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Nowadays, the environmental impact of cementitious material industry and more generally of building activities is matter of concern, especially in terms of their effects on climate change and consumption of natural resources. Within this context, the aim of this paper is the investigation of the role of biochar, a solid carbonaceous by-product material resulting from biomass pyrolysis/gasification of residual biomass, as a sustainable ingredient for the production of cementitious materials, combining carbon sink properties with enhanced mechanical properties. Although biochar is mainly investigated as agricultural amendment, there is also evidence that biochar may be a eco-friendly material to enhance the sustainable performance of cementitious materials. As outlined in literature, biochar can be used as filler to modify the nanogranular nature of cement matrix, or as substitute of clinker to reduce the emissions of greenhouse gases related to cement production. In this work, biochar is added as micro-nano particles in different cementitious composites, i.e. cement pastes and mortars, as a function of filler or partial substitute of cement. The main mechanical properties of biochar-based materials are then investigated to determine the optimal percentage of biochar addition.

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“…Based on these findings, it is possible to conclude that the compressive strength of the concrete varies with biochar feedstock, which influences the structure of the biochar. According to Sirico et al [81], the compressive strength will be greatly affected by the physical and chemical properties of the feedstock material. By comparing the findings of these studies, it is possible to conclude that the feedstock., pyrolysis temperature, properties of the resultant biochar and particle size can significantly affect the compressive strength of biochar cementitious materials, regardless of the biochar content.…”

Section: Compression Strengthmentioning

confidence: 99%

Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

Mensah

Vigneshwaran

Narayanan³

et al. 2021

Sustainability

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The enhanced carbon footprint of the construction sector has created the need for CO2 emission control and mitigation. CO2 emissions in the construction sector are influenced by a variety of factors, including raw material preparation, cement production, and, most notably, the construction process. Thus, using biobased constituents in cement could reduce CO2 emissions. However, biobased constituents can degrade and have a negative impact on cement performance. Recently, carbonised biomass known as biochar has been found to be an effective partial replacement for cement. Various studies have reported improved mechanical strength and thermal properties with the inclusion of biochar in concrete. To comprehend the properties of biochar-added cementitious materials, the properties of biochar and their effect on concrete need to be examined. This review provides a critical examination of the mechanical and thermal properties of biochar and biochar-added cementitious materials. The study also covers biochar’s life cycle assessment and economic benefits. Overall, the purpose of this review article is to provide a means for researchers in the relevant field to gain a deeper understanding of the innate properties of biochar imparted into biochar-added cementitious materials for property enhancement and reduction of CO2 emissions.

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Mechanical characterization of cement-based materials containing biochar from gasification

Cited by 73 publications

References 19 publications

Recent advancements in the use of biochar for cementitious applications: A review

Recent advancements in the use of biochar for cementitious applications: A review

Biochar-based cement pastes and mortars with enhanced mechanical properties

Biochar-Added Cementitious Materials—A Review on Mechanical, Thermal, and Environmental Properties

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