Influence of Moisture Content on Mechanical Properties of Bamboo Scrimber

Zou, Zhenghao; Wu, Jin; Zhang, Xianmeng

doi:10.1061/(asce)mt.1943-5533.0002746

Cited by 17 publications

(7 citation statements)

References 5 publications

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“…These results indicate a lower fracture toughness in the transverse direction compared to the longitudinal direction, highlighting a weaker load-bearing capacity under compressive forces in the transverse direction. In this study, the J el value can be obtained by substituting the calculated fracture toughness into Equation (11). Then, the value of A pl , b 0 , and η of each group is calculated and substituted into Equation (12) to calculate the J pl .…”

Section: Test Results Of Compressive Fracture Toughnessmentioning

confidence: 99%

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Experimental Study on the Fracture Toughness of Bamboo Scrimber

Zhang

Hou

et al. 2023

Materials

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In the past decade, bamboo scrimber has developed rapidly in the field of building materials due to its excellent mechanical properties, such as high toughness and high tensile strength. However, when the applied stress exceeds the ultimate strength limit of bamboo scrimber, cracks occur, which affects the performance of bamboo scrimber in structural applications. Due to the propensity of cracks to propagate, it reduces the load-bearing capacity of the bamboo scrimber material. Therefore, research on the fracture toughness of bamboo scrimber contributes to determining the material’s load-bearing capacity and failure mechanisms, enabling its widespread application in engineering failure analysis. The fracture toughness of bamboo scrimber was studied via the single-edge notched beam (SENB) experiment and compact compression (CC) method. Nine groups of longitudinal and transverse samples were selected for experimental investigation. The fracture toughness of longitudinal bamboo scrimber under tensile and compressive loadings was 3.59 MPa·m1/2 and 2.39 MPa·m1/2, respectively. In addition, the fracture toughness of transverse bamboo scrimber under tensile and compressive conditions was 0.38 MPa·m1/2 and 1.79 MPa·m1/2, respectively. The results show that, for this material, there was a significant distinction between longitudinal and transverse. Subsequently, three-point bending tests and simulations were studied. The results show that the failure mode and the force–displacement curve of the numerical simulation were highly consistent compared with the experimental results. It could verify the correctness of the test parameters. Finally, the flexural strength of bamboo scrimber was calculated to be as high as 143.16 MPa. This paper provides data accumulation for the numerical simulation of bamboo scrimber, which can further promote the development of bamboo scrimber parameters in all aspects of the application.

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Section: Test Results Of Compressive Fracture Toughnessmentioning

confidence: 99%

“…In recent years, there has been some progress in exploring the mechanical properties of bamboo scrimber [ 11 , 12 , 13 ]. However, the majority of research on bamboo scrimber has focused on its fundamental mechanical properties [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Fracture Toughness of Bamboo Scrimber

Zhang

Hou

et al. 2023

Materials

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“…The same thing applies to wood products; Wood shows instability and decreases in strength when there is an increase in water content above the material saturation point (MSP) (Sharma et al, 2015). Almost all mechanical properties, such as compressive strength, hardness, and modulus of elasticity, decrease with increasing water content below the fiber saturation point (FSP) (Cave, 1978;Green et al, 1988;Kojima and Yamamoto, 2004;Kretschmann and Green, 1996;Wang and Wang, 1999;Zou et al, 2019).…”

Section: Moisture Contentmentioning

confidence: 98%

Comparison of Physical and Mechanical Properties of Bamboo Laminates With and Without Natural Fiber Reinforcement

Chanan

Prakosa²,

Kurniawan

2023

JITKT

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Present study of engineered bamboo as an alternative to wood aims to determine the difference of physical-mechanical properties, as well as correlation of the observed properties consist of moisture content, density, modulus of elasticity (Eapp), and modulus of rupture (SR). Bambusa blumeana Schult. & Schult. F and Gigantochloa atroviolacea Widjaja, Agave sisalana Perrine, Hibiscus cannabinus L, and urea-formaldehyde resin as an adhesive used to produce natural-fibre-reinforced and non-reinforced laminated bamboo lumber (LBL). Specimen dimension accordance with ASTM standard D143-14. Test methods and equations accordance with ASTM standard D198-15. Statistical analysis includes analysis of variance, correlation, and regression. Result show properties of the interactions within AO, AK, AS, BO, BK, and BS ranged between 6,40% to 8,00% on MC, 0,62 g/cm3 to 0,74 g/cm3 on density, 12,71 GPa to 37, 70 GPa on MOE, and 62,64 MPa to 104,24 MPa on MOR respectively. Relationship between variables revealed linear negative correlation between MC versus density (R = –0,786), and MC versus MOR (R = –0,666). Linear positive correlation between density versus MOE (R = 0,508), density versus MOR (R = –0,578), and MOE versus MOR (R = –0,793).

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“…[30] In addition, the basic mechanical properties of bamboo engineering materials are affected by the water content, [31] and the hygroscopic properties of bamboo are of great significance to the dimensional stability and basic mechanical properties of the structure. [32] Zou et al [33] proved that the bending strength and stiffness of bamboo decrease with increasing water content. Yuan et al [34] showed that humidity would cause changes in bamboo fiber size.…”

Section: Introductionmentioning

confidence: 99%

Bending properties and design strength of reconstituted bamboo at different temperatures

et al. 2022

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Reconstituted bamboo is a unidirectional fiber adhesive material with strong temperature sensitivity. The bending strength and deformation of reconstituted bamboo beams at different temperatures were measured using a three‐point bending test. At 10°C, 30°C, and 50°C, the samples showed a brittle tensile fracture, simple tensile fracture, and splintering tensile fracture modes respectively, the bending failure pattern of reconstituted bamboo was intensified with increasing temperature. The results show that with increasing temperature, the degree of interlaminar debonding cracking and longitudinal tensile fracture is aggravated, accompanied by shearing. The ultimate bearing capacity of the reconstituted bamboo decreased from 182.25 MPa to 124.89 MPa (a reduction of 31.47%) and the flexural modulus decreased from 11,329.25 MPa to 8679.90 MPa (a reduction of 23.39%) as the temperature increased from 10°C to 50°C. The temperature has little effect on the initial stiffness, and the postelastic stiffness decreases significantly (by 53.01%) with increasing temperature. The thermal softening effect has a significant influence on the plastic behavior of bamboo. A model of the design value of bending strength considering the temperature was established, and the design value of bending strength was evaluated.

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Influence of Moisture Content on Mechanical Properties of Bamboo Scrimber

Cited by 17 publications

References 5 publications

Experimental Study on the Fracture Toughness of Bamboo Scrimber

Experimental Study on the Fracture Toughness of Bamboo Scrimber

Comparison of Physical and Mechanical Properties of Bamboo Laminates With and Without Natural Fiber Reinforcement

Bending properties and design strength of reconstituted bamboo at different temperatures

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