Mining waste and coconut fibers as an eco-friendly reinforcement for the production of concrete blocks

Terra, Isabelle Cristine de Carvalho; Batista, Felipe Gomes; Silva, Danillo Wisky; Scatolino, Mário Vanoli; Alves, Francisco Tarcísio; Martins, Maria Alice; Mendes, Lourival Marin

doi:10.1007/s11356-023-26493-5

Cited by 11 publications

(5 citation statements)

References 40 publications

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“…I. Terra et al (2023) indicated that optimizing liner geometry improves pressure distribution and reduces jamming between the shaft and liner. This results in an improved lubricating film, reduced friction and wear, and increased bearing life.…”

Section: Resultsmentioning

confidence: 99%

“…There are differences with this work in that the author did not notice exactly the importance of the features of using this type of sliding bearings. D. Martins et al (2023) note that such curves as load curves, stress loss curves, and load capacity curves are known in graphical methods of calculating sliding bearings. These curves are used to determine the required bearing parameters, such as relative length, relative eccentricity, and minimum grease layer thickness.…”

Section: Resultsmentioning

confidence: 99%

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Increasing the efficiency of machines and mechanisms of the agro-industrial complex using sliding bearings with curvilinear generators of the internal cylindrical surface

Sadovoy,

Savenkov,

Sydoryka

et al. 2023

UBSRAS

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Sliding bearings with curved internal cylindrical surfaces have great potential and can play an important role in the repair and restoration of mechanisms of the agro-industrial complex. Since their use is becoming more and more common, there is a need to improve the design of such bearings to ensure their quality use and avoid errors in research on this issue, in addition, achieving better results in this area require significant financial investments to improve the efficiency of such mechanisms. The main goal of this work is to provide recommendations aimed at eliminating errors in the processes of improving and improving the quality of sliding bearings, as well as analyzing the functioning of machines used in the agro-industrial complex. An analytical method, a classification method, a functional method, a statistical method, and a synthesis method were used. In the course of the research, the peculiarities and differences of sliding bearings with curvilinear generators of the internal cylindrical surface were noted, errors and their causes, which are allowed during the improvement of agro-industrial mechanisms that ensure the development of the agricultural industry, were analyzed. It is important to analyze the functioning of these mechanisms in order to assess their effectiveness, development and complexity of work during the production of agricultural products. The issue of evaluating the performance of sliding bearings of this type, the expediency of using this element, their limitations during the process, the impact of limitations on the result was considered, and recommendations were proposed that would contribute to an effective mechanism for regulating the issue. It was determined that the use of sliding bearings of this type, in the process of restoring agro-industrial mechanisms, will ensure a significant increase in the productivity of these machines. The practical value of this work lies in the possibility of applying the obtained results to eliminate errors in the development and improvement of the mechanisms of the agro-industrial complex, studying the reliability of the use of sliding bearings in general, taking into account various factors, will provide a basis for recommendations on the appropriate use of these bearings

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Increasing the efficiency of machines and mechanisms of the agro-industrial complex using sliding bearings with curvilinear generators of the internal cylindrical surface

Sadovoy,

Savenkov,

Sydoryka

et al. 2023

UBSRAS

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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2023

UBSRAS

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“…Quartzite may have reduced the pores of the panels, which justi es the decrease in water absorption values with its addition. These lower water absorption values may also be related to the concomitant decrease in the proportion of free hydroxyls (OH-), mainly due to the amorphous region of the chemical constituents (cellulose and hemicelluloses) of the bers, capable of adsorbing water (Terra et al 2023). In the study by Teixeira et al (2012) when evaluating wood-cement panels produced with particles of Hevea brasiliensis, found values of 36.5% for WA 2h and 41.6% for WA 24h.…”

Section: Physical Properties Of Cement-wood Panelsmentioning

confidence: 99%

Potential of mining waste and Hevea brasiliensis wood in the production of cement-wood panels

Ferreira,

Arantes,

Borges

et al. 2023

Preprint

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The incorporation of residues in cement matrices is a viable alternative in obtaining new products for civil construction and a sustainable solution for the disposal of materials discarded by industries. In this context, the objective of the study was to evaluate the potential use of quartzite and particles of Hevea brasiliensis treated with aluminum sulfate [Al2(SO4)3] in the production of cement-wood panels. Quartzite residues and Hevea brasiliensis wood particles were obtained and characterized. The wood particles were mineralized with Al2(SO4)3 at a concentration of 9%. The panels were produced with CPV-ARI Portland cement, calcium chloride (CaCl2) as additive, treated wood particles and addition of quartzite in different proportions (0, 10, 20 and 40%), totaling four treatments. The physical-mechanical and microstructural properties of the panels were determined. The mineralization of the particles contributed to the adherence to the wood-cement. The incorporation of 20% quartzite contributed to the improvement in water absorption and thickness swelling of the panels and in the increase in the modulus of elasticity (MOE) and modulus of rupture (MOR) values. The cement-wood panels were suitable for non-structural and internal use, requiring further studies to evaluate alternative methods of replacing these residues.

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Mining waste and coconut fibers as an eco-friendly reinforcement for the production of concrete blocks

Cited by 11 publications

References 40 publications

Increasing the efficiency of machines and mechanisms of the agro-industrial complex using sliding bearings with curvilinear generators of the internal cylindrical surface

Increasing the efficiency of machines and mechanisms of the agro-industrial complex using sliding bearings with curvilinear generators of the internal cylindrical surface

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Potential of mining waste and Hevea brasiliensis wood in the production of cement-wood panels

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