Fire-resistance, physical, and mechanical characterization of particleboard containing Oceanic Posidonia waste

Abstract

ABSTRACT:In this work, particleboards manufactured with Oceanic Posidonia waste and bonded with cement are investigated. The particleboards are made with 3/1.5/0.5 parts of cement per part of Posidonia waste. The physical properties of bulk density, swelling, surface absorption, and dimensional changes due to relative humidity as well as the mechanical properties of modulus of elasticity, bending strength, surface soundness, perpendicular tensile strength and impact resistance are studied. In terms of the above properties, the best results were obtained for particleboards with high cement content and when the waste "leaves" are treated (crushed) before board fabrication, due to internal changes to the board structure under these conditions. Based on the results of fire tests, the particleboard is non-flammable without any fire-resistant treatment. RESUMEN: Caracterización física y mecánica de tableros fabricados con residuo de Posidonia Oceánica y su reacción frente al fuego.En esta investigación se han diseñado y fabricado tableros con residuo de Posidonia Oceánica y cemento. Los tableros se han fabricado con 3/1.5/0.5 partes de cemento por cada parte de Posidonia estudiándose sus propiedades físicas (densidad, hinchazón, absorción superficial, variaciones dimensionales por humedad) y mecánicas (módulo de elasticidad, resistencia a flexión, al arranque de superficie, al arranque de tornillo, a la tracción perpendicular y al choque). Se observa una mejora de los resultados de resistencia mecánica con el incremento de la cantidad de cemento y si la hoja del residuo es previamente tratada ya que proporciona una mejor estructura interna en el tablero. Además, tras los ensayos de reacción al fuego, se observa que el material es no inflamable sin ningún tipo de tratamiento ignifugante.

Mechanical properties of boards made in biocomposites reinforced with wood and Posidonia oceanica fibers

“…behavior under fire [21]. This fire resistance, very important in biocomposites [24][25], was also reported in cement composites reinforced with PO fibers [17], where the material did not burn under any fire exposure conditions. Recently, another approach to PO recycling has appeared to developed nanocomposites based on cellullose nanocrystals obtained from PO treatment [26].…”

“…Posidonia oceanica is a type of marine phanerogam found on both the Atlantic and the Mediterranean coasts [16]. In the latter, the extensive meadows of Posidonia oceanica (PO) are vital to the marine ecosysthem, are a good indicator of water quality [17], and have been used as a parameter for beach clasiffication [18]. The Balearic Islands and Almería show the most extensive meadows with greater leaf density in the Mediterrenean coast of Spain [19].…”

Effect of pre-treatments and additives on the improvement of cement wood composite: A review

“…Generally, cement-wood composites are materials that have good fire resistance. Saval et al (2014) investigated the flammability of CBPB made of cement and Oceanic Posidonia waste. Because no flame spread occurred to the CBPB, it is not a flammable material.…”

Effects of Multiple Supplementary Cementitious Materials on Workability and Segregation Resistance of Lightweight Aggregate Concrete

“…Posidonia oceanica loses its leaves in an annual cycle similar to that of deciduous forests accumulating in large quantities on the beaches due to the effect of waves [29]. Some studies have been carried out with the objective of evaluating the viability of reusing directly Posidonia oceanica residues accumulated in the Mediterranean beaches as a construction material by using its leaves to reinforce biocomposite boards, which could be an alternative to traditional wood-based particleboard [30,31]. Since large quantities of Posidonia oceanica waste generated in the cleaning processes of the beaches are incinerated, several studies have also been carried out to evaluate the possibility of using the Posidonia oceanica ash (PA) after its incineration at different temperatures as a SCM [29,32,33].…”