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

Q4 Agricultural and Biological Sciences

Journal of Bamboo and Rattan Pub Date : 2004-01-01 DOI:10.1163/156915904772875635

E. Lucas, B. Dahunsi

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引用次数: 13

Abstract

Physical and mechanical properties of three rattan cane species, Calamus deerratus, Eremospatha macrocarpa and Laccosperma secundiflorum, were evaluated. The objective was to determine their suitability for construction, especially for structural members. Proximate analyses as well as mineral contents were also determined. The moisture content and density of green samples were 155% (dry basis) and 587 kg/m3, respectively. L. secundiflorum had the highest carbohydrate content while C. deerratus had the least. Radial shrinkage and swelling exceeded longitudinal shrinkage and swelling in all the rattan species, suggesting high anisotropism in movement. Moisture content had significant effect (P < 0.05) on the moduli of elasticity and rupture of all the rattan species. The moduli of elasticity of C. deerratus, E. macrocarpa and L. secundiflorum were 3396, 516 and 11 106 N/mm2 respectively. The strength properties of the rattan canes were found to be lower than those of timber species of comparable densities. The physical and mechanical properties of the rattan canes studied were found to be adequate for use as reinforcement in lowly stressed concrete elements, such as frameworks for ferrocement and complex shaped formworks.

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尼日利亚西部三种藤类植物的特性及其作为建筑材料的利用

对三种藤本植物——毛竹(Calamus deerratus)、大竹藤(Eremospatha macrocarpa)和二花藤(Laccosperma secundiflorum)的物理力学性能进行了评价。目的是确定它们的施工适用性，特别是结构构件。近似分析和矿物含量也被确定。绿色样品的含水率为155%(干基)，密度为587 kg/m3。其中，次花草的碳水化合物含量最高，褐花草的碳水化合物含量最低。所有藤本植物的径向收缩和膨胀均大于纵向收缩和膨胀，表明其运动具有高度的各向异性。水分含量对所有藤条品种的弹性模量和断裂模量均有显著影响(P < 0.05)。松柏、大松柏和次花松柏的弹性模量分别为3396、516和11 106 N/mm2。藤条的强度特性被发现比那些密度相当的木材品种要低。研究发现，藤条的物理和机械性能足以用作低应力混凝土构件的钢筋，如钢筋混凝土框架和复杂形状的模板。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Bamboo and Rattan Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： The Journal of Bamboo and Rattan is a peer-reviewed scientific journal and provides a forum for scientific articles and reviews on all aspects of fast growing, multi-purpose pliable species. The scope of the journal encompasses income security, craft industry, small to medium size enterprises, industrial fibre and fuel. Articles related to natural distribution and conservation of species, genetics and biotechnology, harvesting and production systems, and environmental applications are also included, as well as papers on marketing and policy restraints in relation to bamboo, rattan and related species.