Densification processes are used to improve the mechanical and physical properties of lignocellulose materials by either collapsing the cell cavities or by filling up the pores, consequently reducing the void volume fraction. This paper focuses on an extensive review of bamboo densification process, which is achieved by compressing the material in the direction perpendicular to the fibers using mainly two different techniques: an open system, thermo-mechanical (TM), or a closed system, viscoelastic-thermal-compression (VTC). The main aim of bamboo densification is to decrease its heterogeneity, as well as to improve its mechanical and physical performance. In addition, densification may occur during the manufacturing of bamboo products in which hot-pressing processes are used to mold bamboo panels. There are over 1600 publications about bamboo, concentrated in the recent decade, mainly about engineered materials. Although several papers regarding bamboo and wood densification are available, very few studies have comprehensively investigated the densification process solely through compression of natural bamboo culms. According to the literature, applying a combination of compression of 6–12 MPa at temperatures between 120–170 °C for 8–20 min can produce materials with higher strength in comparison to the mechanical properties of natural bamboo. The majority of research on bamboo densification indicates that the modified material results in improved properties in terms of density, hardness, bending strength, stiffness, and durability. This paper provides a review that consolidates knowledge on the concept of bamboo culm densification, discusses the roles of parameters that control the process, ascertains the best practice, and finally determines gaps in this field of knowledge.

The substitution of fast-growing biogenic materials for high-carbon footprint extractive materials is increasingly discussed as a climate change mitigation tool. This review is based on a comprehensive literature search conducted in Scopus, Web of Science, and Google Scholar databases for publications, focusing on keywords such as “bamboo” and “sustainable construction”. Through this literature and bibliometric analysis, we identify the relative interest in timber bamboo as a sustainable building material and review the carbon-capturing and structural properties that underly bamboo’s growing research interest. However, this has yet to translate into any material degree of adoption in mainstream construction. Given the near absence of subsidies, regulatory mandates, and “green premiums”, timber bamboo must become fully cost-competitive with existing materials to achieve adoption and provide its carbon-mitigation promise. In addition to academic sources, the review draws on the professional expertise of the authors, who have extensive experience in the bamboo industry. Using this expertise, the main problems preventing timber bamboo’s cost competitiveness are analyzed with possible solutions proposed. The combination of rigorous research and industry insights ensures practical applicability. Finally, the beneficial climate prospects of adopting timber bamboo buildings in substitution for 25% of new cement buildings is projected at over 10 billion tons of reduced carbon emissions from 2035 to 2050 and nearly 45 billion tons of reduced carbon emissions from 2035 to 2100.