Influence of characteristic inhomogeneity of bamboo culm on mechanical properties of bamboo plywood: effect of culm height

Qi, Jin Qiu; Xie, Jiu Long; Yu, Wen Ji; Chen, Si Min

doi:10.1007/s10086-014-1429-8

Cited by 30 publications

(10 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4, the fibre volume fraction, V, of a section may also stand surrogate for modulus. Qi et al (2014) report an increase in fibre volume of about 8% over 10 m culms of Neosinocalamus affinis while Amada et al (1996) report an increase of almost 100% (from V = 20 to 40%). The latter result would appear to explain the 50% increase in tension modulus reported.…”

Section: Variation Of Materials Properties Along Length Of Culmmentioning

confidence: 95%

Geometric and material effects on bamboo buckling behaviour

Harries

Bumstead

Richard

et al. 2017

Proceedings of the Institution of Civil Engineers - Structures

View full text Add to dashboard Cite

Bamboo is a functionally graded material that has evolved to resist its primary loading in nature. This study focuses on the effects of geometric and material property variation along the culm length on the capacity of an axially-loaded member. Conservatively, compression capacity may be calculated using the smallest section of the member; however, this results in an inefficient use of the culm and may limit the use of long compression members. A more realistic estimate of capacity is obtained by considering the effects of culm taper on buckling capacity. Culm taper is experimentally investigated for three representative bamboo species. The effects of culm section gradient on geometric properties is examined followed by an assessment of geometric variation along the culm height. Following this, a series of buckling analyses of tapered culms is conducted to illustrate the significant effects of taper on culm compression capacity. This analysis is supplemented with comparisons to experimental culm buckling data. Beyond compressive capacity, the implications of culm taper are discussed in terms of flexural behaviour, design of gridshells (involving pre-bent axial load-carrying members), visual grading of bamboo and ultimately classification of the many species of bamboo presently used in construction worldwide.

show abstract

Section: Variation Of Materials Properties Along Length Of Culmmentioning

confidence: 95%

Geometric and material effects on bamboo buckling behaviour

Harries

Bumstead

Richard

et al. 2017

Proceedings of the Institution of Civil Engineers - Structures

View full text Add to dashboard Cite

show abstract

“…Due to its short growth and renewal cycles and great mechanical strength, bamboo has been deemed as a promising wood substitute [1,2]. In the past decades, bamboo-based panels such as laminated bamboo lumber and bamboo scrimber have been rapidly used in the field of interior decoration and constructions [3][4][5][6]. However, the bamboo-based panel especially bamboo scrimber has lost the natural appearance of bamboo.…”

Section: Introductionmentioning

confidence: 99%

Effect of high-temperature saturated steam treatment on the physical, chemical, and mechanical properties of moso bamboo

et al. 2020

View full text Add to dashboard Cite

Moso bamboo (Phyllostachys heterocycla (Carr.) Mitford cv. Pubescens) was subjected to heat treatment with saturated steam at 140, 160, and 180 °C for 10-30 min to evaluate the effects of the treatment on the properties of bamboo. The changes in the physical, mechanical, and chemical properties as well as microscopic structures of moso bamboo were analyzed in this study. Results indicated that its equilibrium moisture content (EMC) decreased gradually after being treated by high-temperature saturated steam mostly due to the hemicelluloses' degradation. Both the temperature and duration of treatment affect the mechanical properties of bamboo. The modulus of elasticity (MOE) of bamboo was prone to be affected by heat treatment with saturated steam as compared to the modulus of rupture (MOR). The MOR and MOE increased as compared to the control when the sample was treated at 140 °C. However, a severe treatment negatively affects the mechanical properties of bamboo. The MOR and MOE decreased by 47% and 20% as compared to the control when the sample was heated at 180 °C for 30 min.

show abstract

“…The content of lignin (%) = 2 0 × 100 (4) where 0 (g) is the oven-dry weight of the bamboo powder and 2 (g) is the oven-dry weight of the collected lignin. The aforementioned procedure was repeated; the arithmetic average value of the two measurements was taken as the result.…”

Section: -Cellulose Analysismentioning

confidence: 99%

“…Bamboo, regarded as an attractive natural material in terms of strength and cost [1] due to its rapid growth, affordability, workability, and high mechanical resistance [2], is widely used in light building materials, fencing, scaffolding, and musical instruments [3]. In recent years, bamboo is developed to produce bamboo-based composites to improve its added value, such as bamboo plywood [4], laminated bamboo lumber [5,6], bamboo particleboard [7], and bamboo fiber-reinforced polymer composite [8].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Heat Treatment on the Static and Dynamic Sorptive Behavior of Moso Bamboo (Phyllostachys pubescens)

Huang

Liu

Meng

et al. 2019

Advances in Polymer Technology

View full text Add to dashboard Cite

The influence of heat treatment on moisture sorption behavior of moso bamboo (Phyllostachys pubescens), especially under dynamic sorption conditions, was investigated. Moso bamboo was heated to 180 and 200°C for 8 h to investigate the chemical components and sorptive behavior at sinusoidal relative humidity (RH) and constant humidity. The results of chemical components revealed that the content of holocellulose,α-cellulose, and hemicellulose decreased while that of lignin increased slightly with increasing treatment temperatures. The results of static adsorption at constant RH showed that 200°C treated bamboo exhibited the lowest moisture content and moisture sorption coefficient. The results of dynamic sorptive behavior indicated that the moisture content changed sinusoidally but lagged behind the triggering sinusoidal RH changes. Heat-treated bamboo presented greater phase lag and smaller amplitudes of moisture content and sorption hysteresis due to the hemicellulose removal.

show abstract

Influence of characteristic inhomogeneity of bamboo culm on mechanical properties of bamboo plywood: effect of culm height

Cited by 30 publications

References 5 publications

Geometric and material effects on bamboo buckling behaviour

Geometric and material effects on bamboo buckling behaviour

Effect of high-temperature saturated steam treatment on the physical, chemical, and mechanical properties of moso bamboo

The Influence of Heat Treatment on the Static and Dynamic Sorptive Behavior of Moso Bamboo (Phyllostachys pubescens)

Contact Info

Product

Resources

About