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Characterisation of hemp shiv and its effect on the compressive strength of hemp concrete

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Hemp concrete is a promising product that has a wide range of properties and diversification. It is a sustainable material, with good thermal and acoustic properties. Being plant-based material, it has also the ability to absorb carbon dioxide, leading to significant reduction in carbon footprint. This paper investigates the role of hemp aggregate by characterising the hemp aggregate and testing the compressive strength of hemp concrete. The characterisation of hemp aggregate included testing its grading, water absorption and bulk density. Factors that affect the mechanical behaviour of hemp concrete were investigated, including water to lime (W/L) ratio, binder to hemp (B/H) ratio, pre-saturation of hemp and degree of compaction. Statistical models were derived to determine the significance of each factor and their interactions. Characterisation of hemp revealed that majority of hemp shiv retained between 1.18 to 3.35 mm sieve. The water absorption of hemp was approximately 300% after 48 h and bulk density was around 95.4 kg/m3. Models suggest that W/L and B/H were the most significant parameters affecting the compressive strength of hemp concrete.

Original languageEnglish
Title of host publicationInternational RILEM Conference on Synergising Expertise towards Sustainability and Robustness of Cement-based Materials and Concrete Structures: SynerCrete’23: proceedings
EditorsAgnieszka Jędrzejewska, Fragkoulis Kanavaris, Miguel Azenha, Farid Benboudjema, Dirk Schlicke
PublisherSpringer Science and Business Media B.V.
Pages1307-1317
Number of pages11
Volume1
ISBN (Electronic)9783031332111
ISBN (Print)9783031332104
DOIs
Publication statusPublished - 11 Jun 2023
EventInternational RILEM
Conference on Synergising
Expertise
towards Sustainability
and Robustness
of Cement-based Materials
and Concrete Structures, SynerC23
- Milos, Greece
Duration: 14 Jun 202316 Jun 2023

Publication series

NameRILEM Bookseries
Volume43
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852

Conference

ConferenceInternational RILEM
Conference on Synergising
Expertise
towards Sustainability
and Robustness
of Cement-based Materials
and Concrete Structures, SynerC23
Country/TerritoryGreece
CityMilos
Period14/06/202316/06/2023

Keywords

  • Bio-based Construction Material
  • Compressive Strength
  • Hemp Concrete
  • Statistical Models
  • Sustainability

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials

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