The aim of this study was to determine the bending strength of finger joint of Kelat wood (Syzygiumspp.) bonded using Phenol Resorcinol Formaldehyde (PRF). Three finger-jointed Kelat wood with finger length of 12 mm, 13 mm and 15 mm respectively were manufactured and tested. In addition, the effects of different orientation (horizontal and vertical) of fingers were also examined. Bending tests were carried out to determine the Modulus of Elasticity (MOE) and Modulus of Rupture (MOR) of the finger jointed samples in accordance to BS EN 373 standard. The results show that 15 mm finger length exhibited significantly higher means of MOE and MOR with the values of 17635.12 MPa and 72.59 MPa respectively, as compared to the shorter finger length (p≤0.05). This suggests that the bending strength was influenced by the finger length. The result also shows that bending strength of vertical finger joint is not significantly different compared to horizontal finger joint (p≥0.05). Therefore, the results obtained in this study is useful to provide base line data for a subsequent work which involve the manufacturing of glued laminated timber (glulam) from this timber species.
This paper presents the feasibility study of adding recycled Polyethylene Terephthalate (PET) fiber obtained from drinking water bottle as admixture material in the concrete. A few numbers of tests were conducted to determine the physical and mechanical properties of recycled PET fiber reinforced concrete such as slump test, compressive strength test and flexural strength test. The effect of incorporating the recycled PET fiber on various volume fractions of concrete by 0.5%, 1%, and 1.5% of weight of cement were experimentally investigated. The test specimens comprising of cubes and beams were prepared and tested at 3, 7, 14 and 28 days after curing process completed. Generally, it was found that the workability of concrete reinforced recycled PET has reduced as the volume fraction of PET fiber increased. The compressive strength of concrete reinforced recycled PET has reached the highest value at volume fraction of 0.5%. However, the flexural strength of concrete was significantly increased by incorporating 1.0% of recycled PET fiber. It can be concluded that the concrete which contains 0.5% of recycled PET fiber has the highest of average percentage of relative. Hence, it can be categorized as the optimum percentage of recycled PET fiber to be utilized in concrete. It is recommended to use recycled PET fiber in concrete for the construction of structures and infrastructures as a green construction material in order to achieve clean and sustainable environment in the year future.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.