A comprehensive review of hempcrete as a sustainable building material

Abstract

Abstract Due to the substantial contribution of the construction industry to greenhouse gas emissions, there exists a pressing need for the development and adoption of sustainable alternatives. In this context, hempcrete has emerged as a promising alternative in the pursuit of sustainable construction practices. This paper presents a comprehensive review of the existing research landscape surrounding hempcrete as a sustainable building material. The review explores the primary materials utilised in hempcrete, followed by an analysis of the opportunities and limitations associated with the material. Furthermore, the paper investigates diverse construction techniques and practical applications, binders, mix designs, as well as the properties of hempcrete spanning from fresh-state characteristics to the mechanical, durability, thermal, and acoustic properties of the material. Moreover, the environmental sustainability as well as the cost of hempcrete construction are investigated. Upon analysis of the research presented in this review paper, it becomes apparent that hempcrete demonstrates noteworthy potential as a sustainable solution in the construction sector, emphasising its role in reducing the environmental impacts brought about by the construction industry. This review paper presents the findings of the current research landscape of hempcrete and provides insights for future research endeavours aimed at optimising the performance of hempcrete.