Investigations on sustainable honeycomb sandwich panels containing eucalyptus sawdust, Piassava and cement particles

Dutra, Jezrael Rossetti; Filho, Sérgio Luiz Moni Ribeiro; Christofóro, André Luis; Panzera, Túlio Hallak; Scarpa, Fabrizio

doi:10.1016/j.tws.2019.106191

Cited by 23 publications

(2 citation statements)

References 34 publications

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“…They reported higher values of modulus of rupture for all fabricated honeycomb-like composite structures. They evaluated elastic and failure properties of the sandwich-like structure with the help of finite element models to predict the theoretical strength of developed samples [38]. In another study, Guan et al worked with eucalyptus/popular based carbon fiber reinforced composites and studied their flexural properties or bending strength.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Mechanical Properties of Eucalyptus-Basalt-Based Hybrid-Reinforced Cement Composites

2020

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The present study describes the manufacturing of flat sheets of eucalyptus-basalt based hybrid reinforced cement composites (EB-HRCC). The potential of basalt fibrous waste (BFW) as a reinforcement agent in cement matrices and its effects on mechanical and interfacial properties were evaluated in detail. Significantly enhanced bending (flexural) strength and ductility were observed for all developed composite samples. BFW and eucalyptus pulp (EP) were utilized as reinforcement and filling agents respectively for EB-HRCC samples. Mechanical, microstructural and physical properties of EB-HRCC samples were investigated with different formulations of BFW with EP in cement matrices. The results showed that physical properties of the composite samples were more influenced by fiber content. For standard mechanical analysis, the composite samples were placed in sealed bags for two days, thermally cured at 60 °C for five days and immersed in water in ambient conditions for one day. The obtained results showed that samples prepared under optimized conditions (4% EP and 2% BFW) had significantly higher flexural strength and bulk density with lower water absorption and apparent void volume (porosity). Moreover, the higher percentage of BFW significantly enhanced the values of modulus of rupture (MOR), modulus of elasticity (MOE), specific energy (SE) and limit of proportionality (LOP). The effects of entrapped air under the four-point bending test on the mechanical behavior of hybrid composites were also investigated in this thematic study. The composites were designed to be used as roofing tile alternatives.

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Section: Introductionmentioning

confidence: 99%

Enhanced Mechanical Properties of Eucalyptus-Basalt-Based Hybrid-Reinforced Cement Composites

2020

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“…In addition, compared to conventional materials used in civil construction, WCBs, as they contain biodegradable particles, can be considered sustainable composites, since the wood come from certified forests subjected to sustainable management [39]. By using them, the addition of petroleum-based fibers is reduced, the use of asbestos, cement consumption is reduced and agribusiness and timber residues are used [2,15,22,35].…”

Section: Introductionmentioning

confidence: 99%

Cement boards reinforced with wood sawdust: an option for sustainable construction

et al. 2020

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Ochroma pyramidale is a fast-growing forest species with low-density wood. The present study had the goal to assess the effect of extractive removal on the performance of the species for producing wood-cement boards (WCB). Wood particles were submitted to three types of treatment for extractives removal: cold water, hot water and sodium hydroxide (NaOH). An entirely randomized design with four treatments was established, respectively, T1-control treatment, T2-cold water, T3-hot water and T4-NaOH, with 4 replicates (boards) per experimental treatment, to assess the effect of extractives removal on the boards' physical and mechanical properties. Wood/cement ratio = 1:5, water/cement ratio = 1:2 and 4% CaCl 2 as additive based on dry mass of cement were used. The following WCB properties were evaluated: density, compaction ratio; water absorption and thickness swelling after 2, 24 and 72 h of water immersion; and mechanical strength during static bending (moduli of elasticity and rupture). The results showed there was no need for wood particle treatment, since no improvement of the boards' physical-mechanical properties was achieved by previous application of cold or hot water or NaOH on the particles. Water absorption and thickness swelling were lower than the levels reported in the literature and minimum values specified by WCB factories. Despite having weaker mechanical properties than those required for structural uses, wood from Ochroma pyramidale can be employed in the production of boards designed for use in moist environments but not having structural importance, such as for partitions, walls, tile flooring and exterior siding.

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Three-Point Bending of Sandwich Beams with FRP Facing and PP Honeycomb Core

Kassab

Sadeghian

2022

Lecture Notes in Civil Engineering

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Investigations on sustainable honeycomb sandwich panels containing eucalyptus sawdust, Piassava and cement particles

Cited by 23 publications

References 34 publications

Enhanced Mechanical Properties of Eucalyptus-Basalt-Based Hybrid-Reinforced Cement Composites

Enhanced Mechanical Properties of Eucalyptus-Basalt-Based Hybrid-Reinforced Cement Composites

Cement boards reinforced with wood sawdust: an option for sustainable construction

Three-Point Bending of Sandwich Beams with FRP Facing and PP Honeycomb Core

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