Eco-efficient boards with agro-industrial wastes - Assessment of different adhesives

Laboratory tests were carried out to evaluate the feasibility of producing boards or coating panels with good hygrothermal performance by using different agro-industrial wastes (grape and olive press wastes, hazelnut shells, spent coffee and pine) and adhesives (gypsum-based binder, sodium silicate solution and starch-based glue). Hygrothermal properties and resistance to mould growth, including the effect of citric acid, were evaluated. The results highlighted the benefits and drawbacks of each adhesive: the binder seems more adequate to produce bio-based plastering mortars than boards; the other adhesives seem efficient solutions to produce boards with good hygrothermal properties; for the natural glue the bio-susceptibility needs improvement.

Automated summary

Laboratory tests were conducted to evaluate the possibility of producing boards or coating panels with good hygrothermal performance using various agro-industrial wastes and adhesives. The results showed the advantages and disadvantages of each adhesive, with citric acid affecting mold growth resistance.