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The use of bio-based building materials is a sustainable opportunity to reduce the environmental footprint associated with the construction sector. The achievement of this objective is primely achieved through the valorisation of vegetable waste, resulting in a reduction in the use of primary source material and waste generation. Within the scope of this study, the focus is directed towards research concerning the thermal, acoustic, and fire behaviour properties of bio-based building materials. This study conducts a comprehensive bibliometric analysis encompassing all documents meeting these criteria within the Scopus database, spanning two decades, from 2003 to 2023. The comprehensive analysis covered a total of 1081 documents, which were analysed. This analysis furnishes insight into various facets, including the temporal evolution of publications, journals boasting the highest publication counts and impact, influential research areas, countries with substantial contributions and their collaborative patterns, noteworthy affiliations, prolific authors, and seminal documents, alongside recurrent keywords. The objective of this comprehensive study is to provide a detailed analysis of the documents published up to the present day, in order to identify research gaps and potential opportunities in this field, to assist new researchers interested in the subject. The analysis reveals that bio-based building materials have gained substantial attention over the past decade. With each passing year, the published documents have increased their impact and become more specific, underscoring the growing importance of this subject. This evolution has also fostered a broader network of researchers engaged in this field. However, it is noteworthy that the characterization of these materials focuses predominantly on their thermal properties, while research avenues related to acoustic and fire properties remain less explored and present opportunities for future investigation. • This study contributes to identify research gaps and potential opportunities in the field of bio-based building materials. • Studies in bio-based building materials have shown an annual growth of the 25% since 2014, being a topic on the rise. • France and China are the countries with the highest scientific publication on bio-based building materials. • Keywords play a crucial role in making visible the research within bio-based building materials. • "Thermal Conductivity" and "Thermal insulation" are the most repeated keywords in this field. [ABSTRACT FROM AUTHOR]

• This study proposes ply-lam CLT with domestic plywood as the core material of CLT. • The thermal conductivities of ply-lam CLT in the radial was lowest at 0.104 W/m K. • The ply-lam CLT walls had lower thermal bridges than wood frame structure walls. • The ply-lam CLT walls with exterior insulation had lower thermal bridges. • The connection method using STS was able to maintain excellent insulation performance. Cross-laminated timber (CLT), developed in Europe for the utilization of low-grade wood, is an engineered wood product (EWP) with high carbon storage and low carbon emissions. CLT wooden houses have advantages such as reduction of greenhouse gases, shortening of construction period through precast and modular construction, improved of insulation performance and airtight performance, the realization of the high-rise wooden house. In this study, ply-laminate cross-laminated timber (ply-lam CLT) was prepared using domestic plywood as the core material of CLT, and the thermal properties and heat transfer performance of ply-lam CLT were analyzed. The thermal conductivities of the ply-lam CLT in the radial, tangential, and longitudinal directions were 0.104 W/(m K), 0.111 W/(m K), and 0.122 W/(m K), respectively. The results of the heat transfer analysis through ISO 10211 indicated that the ply-lam CLT walls had lower thermal bridges than wood frame structure walls. Moreover, the ply-lam CLT walls with exterior insulation had lower thermal bridges. In addition, the self-tapping screw (STS) joining method on all connections was able to maintain excellent insulation performance because of low thermal transmittance coefficient. In addition, it should be noted that the STS applied from inside overlapped with the geometric thermal bridges. [ABSTRACT FROM AUTHOR]

Abstract: Thermal properties of five screed specimens were evaluated by four different thermal analysis methods. Thermal conductivity results showed that samples with recycled glass aggregate had a substantially lower thermal conductivity compared with those of sand screeds. Variation of heat capacity between the glass and sand screed mixtures increased with elevated temperature to a significant extent; the glass screeds seemed to show the highest heat capacities at these increased levels. The 100% glass aggregate specimens exhibited a lower thermal expansion at higher temperatures showing a higher dimensional stability. From the results a model was created to assess some realistic scenarios which the screeds may be presented with. A comparison of the screeds over different temperature ranges was produced. Glass screeds were shown to save approximately three times the energy of conventional sand counterparts due to good thermal insulation. When compared, the 100% glass with rapid cementations provided the best possibility for financial savings. The study demonstrated that glass aggregate screeds could be used as a cost effective and environmentally friendly building material that superseded sand alternatives dramatically in thermal retention. [Copyright &y& Elsevier]