Characteristics of three western Nigerian rattan species in relation to their utilisation as construction material

Lucas, E. B.; Dahunsi, B. I. O.

doi:10.1163/156915904772875635

Cited by 11 publications

(15 citation statements)

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“…It varied from 110% in E. macrocarpa to 159% in C. deeratus ( Table 3). The results obtained in this study for C. deeratus and L. secundiflorum conforms to values obtained by Lucas and Dahunsi [28] for the same species from Nigeria except E. macrocarpa. The difference in values for E. macrocarpa might be due to differences in methodology.…”

Section: Physical Propertiessupporting

confidence: 91%

“…These defects have been observed by Lucas and Dahunis [28] on L. secundiflorum from Nigeria. The relatively higher moisture content, the low relative density (Table 3) due to lower proportion of fibres with relatively larger fibre lumen and thin-walled fibres (Table 2), the non-uniform distribution of vascular bundles (Fig.…”

Section: Anatomical and Physical Properties Relating To Stem Qualitymentioning

confidence: 53%

“…This implies that E. macrocarpa seem to possess better strength and may remain dimensionally more stable when in use than the other four species. Recent studies by Lucas and Dahunsi [28] on C. deeratus, E. macrocarpa and L. secundiflorum from Nigeria revealed that E. macrocarpa had the lowest shrinkage values. Although, the Laccosperma spp.…”

Section: Anatomical and Physical Properties Relating To Stem Qualitymentioning

confidence: 94%

“…Except for the work of Weiner and Liese [18,21] and Ebanyenle and Oteng-Amoako [27], which dealt with the anatomy of some African rattans, almost all anatomical investigations have focused on Asian rattans. The physical and mechanical properties of three rattan species of Nigeria have recently been evaluated to assess their potential as construction materials [28].…”

Section: Introductionmentioning

confidence: 99%

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Variation in some anatomical and physical properties of stems of five rattan palm species of Ghana

Ebanyenle¹,

Oteng-Amoako²

2005

Journal of Bamboo and Rattan

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Selected anatomical and physical properties of stems of Calamus deeratus, Eremospatha dransfieldii, Eremospatha macrocarpa, Laccosperma acutiflorum and Laccosperma secundiflorum in the natural forest of Ghana were investigated to aid in understanding their quality and to promote their efficient utilization. Fibre lumen diameter, double fibre wall thickness (fibre diameter minus fibre lumen diameter) and proportion of fibres exhibited a more definite pattern of variations within and between all the five species than other anatomical properties. Generally, proportion of fibre and double fibre wall thickness decreased, whereas fibre lumen diameter increased from base to top internodes. Initial moisture content increased consistently from base to top internodes whilst relative density decreased in the same direction. Simple regression analysis of physical properties on anatomical properties revealed that fibre lumen diameter, double fibre wall thickness and proportion of fibre are important parameters likely to influence initial moisture content and relative density along the stems and between all species investigated. Stem quality of all five species is also discussed.

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Section: Physical Propertiessupporting

confidence: 91%

Section: Anatomical and Physical Properties Relating To Stem Qualitymentioning

confidence: 53%

Section: Anatomical and Physical Properties Relating To Stem Qualitymentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Variation in some anatomical and physical properties of stems of five rattan palm species of Ghana

Ebanyenle¹,

Oteng-Amoako²

2005

Journal of Bamboo and Rattan

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“…All the findings fall between 3.94 and 28.86% of steel-concrete bond strength of 2.07 N/mm 2 of comparable concrete grade (Neville and Brook [45]). It was found that the moduli of elasticity for three species of Rattan were 3396, 516 and 11,106 N/mm 2 for C. deerratus, E. macrocarpa and L. secundiflorum respectively (Lucas and Dahunsi [46]). The use of rattan reinforcement in lieu of conventional steel reinforcements requires better understanding under axial loading and performance conditions.…”

Section: Introductionmentioning

confidence: 99%

Comparative Studies of Steel, Bamboo and Rattan as Reinforcing Bars in Concrete: Tensile and Flexural Characteristics

Adewuyi¹,

Otukoya²,

Olaniyi³

et al. 2015

OJCE

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This study comparatively evaluated the flexural performance and deformation characteristics of concrete elements reinforced with bamboo (Bambusa vulgaris), rattan (Calamuc deerratus) and the twisted steel rebars. The yield strength (YS), ultimate tensile strength (UTS) and the elongation of 50 specimens of the three materials were determined using a universal testing machine. Three beams of concrete strength 20 N/mm 2 at age 28 days were separately reinforced with bamboo, rattan and steel bars of same percentage, while the stirrups were essentially mild steel bars. The beams were subjected to centre-point flexural loading according to BS 1881 to evaluate the flexural behaviour. The YS of bamboo and rattan bars were 13% and 45% of that of steel respectively, while their UTS were 16% and 62% of that of steel in the same order. The elongation of bamboo, rattan and steel were 7.42%, 10% and 14.7% respectively. The natural rebars were less than the 12% minimum requirement of BS 4449. The load-deflection plots of bamboo and steel RC beams were quadratic, while rattan RC beams had curvilinear trend. The stiffness of bamboo RC beams (BB) and rattan RC beams (RB) were 32% and 13.5% of the stiffness of steel RC beams (SB). The post-first crack residual flexural strength was 41% for BB and SB, while RB was 25%. Moreover, the moment capacities of BB and RB corresponded to 51% and 21% respectively of the capacity of steel RC beams. The remarkable gap between the flexural capacities of the natural rebars and that of steel can be traced not only to the tensile strength but also the weak bonding at the bar-concrete interface. It can be concluded that the bamboo bars are suitable rebars for non-load bearing and lightweight RC flexural structures, while more pre-strengthening treatment is required more importantly for rattan for improved interfacial bonding and load-carrying capacity. * Corresponding author.A. P. Adewuyi et al. 229

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Effectiveness Evaluation of Zali bet as Reinforcement in Concrete Beam

Mahzuz¹,

Ahmed²,

Uddin³

et al. 2014

cea

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Characteristics of three western Nigerian rattan species in relation to their utilisation as construction material

Cited by 11 publications

References 0 publications

Variation in some anatomical and physical properties of stems of five rattan palm species of Ghana

Variation in some anatomical and physical properties of stems of five rattan palm species of Ghana

Comparative Studies of Steel, Bamboo and Rattan as Reinforcing Bars in Concrete: Tensile and Flexural Characteristics

Effectiveness Evaluation of Zali bet as Reinforcement in Concrete Beam

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