Feasibility of Creosote Treatment for Glued-Laminated Pine-Timber Railway Sleepers

Silva, António; Martins, A.; Feio, A. O.; Machado, José S.

doi:10.1061/(asce)mt.1943-5533.0001073

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…The samples were collected across the sleeper, by 10%, 33% and 50% distance along the sleeper (Kohler & Künniger, 2003). As in the research of other scientists, the prevailing concentrations are of acenaphthene, fluorene, phenanthrene, and fluoranthene (Kohler & Künniger, 2003;Silva, Martins, Feio, & Machado, 2014).…”

Section: Research Resultsmentioning

confidence: 99%

Complex Contamination Research and Hazard Assessment of the Waste of the Wooden Railway Sleeper

Vilniškis

Vaiškūnaitė

2018

BJRBE

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Before being put to use, wooden railway sleepers are impregnated with creosote to increase their longevity and protect them from any adverse environmental impact. Creosote consists of a number of chemical substances, and some of those substances, namely, the polycyclic aromatic hydrocarbons, phenolic compounds and heterocyclic aromatic compounds, are potent carcinogens. Apart from polycyclic aromatic hydrocarbons and phenolic compounds, during their use, sleepers are mostly contaminated with heavy metals and petroleum products. Upon railway reconstruction, wooden railway sleepers become the waste, which must be handled by the current legislation of the European Union. After determining the concentration of contaminants with laboratory research, it is possible to identify their hazard level and classify them as hazardous or non-hazardous waste. After conducting laboratory research on the waste of wooden railway sleeper analysed, they are classified as hazardous waste.

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Section: Research Resultsmentioning

confidence: 99%

Complex Contamination Research and Hazard Assessment of the Waste of the Wooden Railway Sleeper

Vilniškis

Vaiškūnaitė

2018

BJRBE

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“…The information reported in the literature regarding the impregnation efficiency of glued wood products with waterbased solutions is rather scarce. The focus was mostly on the impregnation of oil-based preservatives and involving formaldehyde-based adhesives (Silva et al 2015). The results concerning impregnation efficiency of 1C-PUR glued wood specimens with Cu preservative are presented in Fig.…”

Section: Impregnation Efficiency Of Glued Wood Specimensmentioning

confidence: 99%

“…Restriction in the liquid penetration for glued wood materials has also been reported for other adhesive systems. Silva et al (2015) have analysed creosote impregnation quality of glue-laminated timber where the cross-section images of the specimens indicated restricted creosote penetration through the formaldehyde-based adhesive bondlines. Dias et al (2020), who analysed Cu preservative (Tanalith E 8001) impregnation efficiency for glue-laminated timber bonded with formaldehyde-based adhesives, presented similar observations.…”

Section: Impregnation Efficiency Of Glued Wood Specimensmentioning

confidence: 99%

The potential of improving wood preservative penetration into glued wood products bonded with one-component polyurethane by discontinuous adhesive bondline design

et al. 2021

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As a vast majority of glued wood products are intended for outdoor use or for building construction, impregnation with different agents is important for ensuring proper performance. It has been shown that the impregnation prior to gluing has several disadvantages, therefore the possibility of carrying out impregnation after gluing is analysed in the present research. Impregnation efficiency as well as the effect on the bond quality is evaluated for the one-component polyurethane glued wood specimens. The results showed that the impregnation with Cu preservative after gluing did not affect the shear strength of the glued wood specimens, but did significantly restrict Cu preservative penetration due to the adhesive bondlines. Considering the results, the possibility of improving the impregnation efficiency was also investigated. By using specific adhesive application designs, which cover the bondline only partially, it was possible to improve the impregnation efficiency. However, the Cu distribution was inhomogeneous and the improvement was noticeable only up to the second bondline. The partial adhesive application design also affected the bond strength of glued wood specimens, which resulted in a decrease both in dry and wet state. However, the reduction was not so sever as to cause delamination during three consecutive wetting and drying cycles.

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A Review on Current Materials, Their Failures, and Advancement in Railway Sleepers

Girish,

Murnal

2024

Lecture Notes in Civil Engineering

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Feasibility of Creosote Treatment for Glued-Laminated Pine-Timber Railway Sleepers

Cited by 6 publications

References 14 publications

Complex Contamination Research and Hazard Assessment of the Waste of the Wooden Railway Sleeper

Complex Contamination Research and Hazard Assessment of the Waste of the Wooden Railway Sleeper

The potential of improving wood preservative penetration into glued wood products bonded with one-component polyurethane by discontinuous adhesive bondline design

A Review on Current Materials, Their Failures, and Advancement in Railway Sleepers

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