Article
Materials Science, Paper & Wood
Raviduth Ramful, Atsushi Sakuma
Summary: This study found that smoke treatment negatively affected the flexural strength of bamboo, while improving its compression properties. The outermost fibers of smoke-treated bamboo showed decreased tensile strength, leading to increased brittleness. These critical changes in mechanical properties highlight the need for further research to enhance the strength of smoked bamboo as a sustainable construction material.
Article
Engineering, Civil
Yang Wei, Si Chen, Shuaifeng Tang, Donglin Peng, Kang Zhao
Summary: This paper proposes a novel method to strengthen existing timber beams by adding high-performance engineered bamboo scrimber and carbon fiber-reinforced polymer (CFRP) layers, which can effectively enhance the flexural stiffness and strength of the beams. The experimental results show that the thickness of bamboo scrimber increases the stiffness and bending strength of the beams, while the addition of CFRP layers has no noticeable effect on the strength. The reinforced beams exhibit excellent deformability and stable durable platform segments.
JOURNAL OF COMPOSITES FOR CONSTRUCTION
(2022)
Article
Forestry
Shan Li, Shumin Yang, Lili Shang, Xinge Liu, Jianfeng Ma, Qianli Ma, Genlin Tian
Summary: This study used high-resolution X-ray microtomography to reconstruct a 3D morphometry model of the vascular bundle of a bamboo node, revealing significant variations in morphology along the axial direction. The results showed differences in the distribution of vascular bundles in different parts of the node, contributing to a better understanding of bamboo mechanical properties and water transportation.
Article
Construction & Building Technology
Marc Antoun, Camille A. Issa, Georges Aouad, Najib Gerges
Summary: This study investigated the effect of using olive wood waste (OWW) as a replacement for sand in concrete masonry blocks, showing that 25% and 50% replacement ratios of OWW can increase flexural strength, reduce heat of hydration, and maintain acceptable compressive strength for nonstructural applications.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Construction & Building Technology
Linbi Chen, Shanyu Han, Deyue Li, Jianchao Deng, Fuming Chen, Ge Wang
Summary: Bamboo-wood composite materials have promising prospects in modern green and low-carbon buildings. This study conducted two full-scale vibration tests to investigate the vibration behavior of bamboo-wood floor slabs. The results showed that the bamboo-wood floor slabs had higher flexural stiffness and better vibration-damping performance, meeting the requirements of structural materials for floor slabs.
Article
Construction & Building Technology
Shereen Qasim Abdulridha, Mohammad Salah Nasr, Bahaa Hussain Al-Abbas, Zaid Ali Hasan
Summary: The study investigates the use of waste rope fibers (WRF) in concrete and found that incorporating WRF can significantly improve the strength and ductility of concrete, while reducing crack width in reinforced concrete beams.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Chemistry, Physical
Mohammad E. Golmakani, Tomasz Wiczenbach, Mohammad Malikan, Reza Aliakbari, Victor A. Eremeyev
Summary: The present research investigated the mechanical properties of wood flour reinforced polyethylene polymer composites with varying wood flour size, aspect ratios, and mold injection temperature. Results showed that reducing the wood flour size decreased the tensile strength and modulus, flexural strength and impact energy, while increasing the flexural modulus. Additionally, increasing the injection molding temperature decreased the tensile strength and modulus, impact energy, while increasing the flexural strength and modulus. Thus, optimizing the injection molding temperature can improve the mechanical properties of the composite.
Article
Plant Sciences
Xiaotong Guo, Yue Li, Ningning Li, Guolong Li, Yaqing Sun, Shaoying Zhang
Summary: The CPD gene in sugar beet plays a crucial role in promoting the growth and development of the taproot by promoting the synthesis of endogenous brassinolide (BR), improving cell wall components, and facilitating the development of parenchyma cells and vascular bundles.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Engineering, Civil
D. Lacroix, C. Viau, E. Battelli, G. Doudak
Summary: The experimental program found that GFRP reinforcement reduced damage region in wood studs, especially when used with confinement. U-shaped reinforcement significantly increased flexural strength and stiffness of studs. Walls reinforced with FRP performed better under blast loading, dissipating twice the energy of unreinforced walls.
ENGINEERING STRUCTURES
(2021)
Article
Forestry
Ying Zhang, Haocheng Xu, Jing Li, Tuhua Zhong, Hankun Wang
Summary: The dry shrinkage mechanism and structural changes of bamboo were studied by combining traditional methods with vascular bundle detection, and the changes of key parameters were quantified and analyzed.
Article
Construction & Building Technology
Mingqian Wang, Yuxiang Zhao, Qingfeng Xu, Kent A. Harries, Xiangmin Li, Yubing Leng
Summary: This paper presents an experimental study on the flexural performance of heavy timber beams strengthened using self-tapping screw-affixed engineered bamboo materials. The study explores the use of bamboo plates to improve beam stiffness and examines the effect of different types of bamboo plates on the strengthening effect.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Saheb Hadi, Ehsan Kazeminezhad, Soroush Safakhah
Summary: This research evaluates four different implementation methods of carbon fiber reinforced polymer (CFRP) for enhancing the structural performance of reinforced concrete (RC) beams. The results show that the hybrid method achieves the highest flexural capacity and improves the ductility and hardening of the beams.
Article
Chemistry, Multidisciplinary
Sergej Medved, Dasa Krapez Tomec, Angela Balzano, Maks Merela
Summary: Studying the potential of invasive alien wood species as components of wood-plastic composites can provide better opportunities for sustainability and result in higher mechanical strength and water resistance.
APPLIED SCIENCES-BASEL
(2021)
Article
Construction & Building Technology
Sangketa Sangma, Deb Dulal Tripura
Summary: This study investigates the flexural strength of cob wallettes reinforced with bamboo and steel mesh, finding that cement stabilized wallettes reinforced with bamboo and steel exhibit the highest flexural strength. The findings suggest that bamboo and steel reinforcement enhances the ductility of the cob wallettes.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Yansong Liu, Yingchun Qi, Hao Sun, Na Han, Jianfei Zhou, Jiafeng Song, Meng Zou
Summary: To enhance the crashworthiness and energy absorption of thin-walled tubes, a novel design inspired by the bamboo vascular bundles' characteristics was proposed. Experimental and theoretical analyses confirmed the energy absorption of the bionic structure. Numerical simulations investigated the impact of bionic unit structure and connection settings on crashworthiness indexes. The optimal energy-absorbing structure was achieved when the vascular fiber sheath flap unit was a semicircle with a 3:7 radius-to-length ratio. The article also explored the effect of the connection between the bionic unit and the outer tube on crashworthiness, providing an optimal alpha-beta connection. Additionally, the introduction of parallel fractal and rotational fractal approaches improved the crashworthiness of thin-walled tubes, with the former exhibiting better performance at the same level.
THIN-WALLED STRUCTURES
(2023)
Article
Materials Science, Paper & Wood
Fangda Zhang, Changhua Fang, Huanrong Liu, Xinxin Ma, Xiubiao Zhang, Zixuan Yu, Renzhong Tao, Jun Zhang, Benhua Fei
Summary: This study explores the structural characteristics and mechanical performance of bamboo-wood composite container flooring, demonstrating that the location of bamboo slivers within the flooring can impact its properties.
WOOD MATERIAL SCIENCE & ENGINEERING
(2022)
Article
Engineering, Manufacturing
Yu Luan, Chang-Hua Fang, Yi-Fan Ma, Ben-Hua Fei
Summary: Wood, as a renewable and low-price material, is widely used in various fields. However, its mechanical strength is often insufficient for advanced engineering structures. Mechanical densification is considered an effective method to improve wood properties while maintaining its eco-friendly characteristics.
MATERIALS AND MANUFACTURING PROCESSES
(2022)
Article
Construction & Building Technology
Bin Huang, Lin Chen, Changhua Fang, Xianke Wang, Xinxin Ma, Huanrong Liu, Xiubiao Zhang, Fengbo Sun, Benhua Fei
Summary: Equal-arc shaped bamboo split (EASB) is a new type of bamboo unit that reduces morphological damage and maintains the natural structure and texture characteristics of bamboo. The fracture interface of EASB was analyzed using SEM and X-ray micro-computed tomography imaging. The study found that EASB exhibited significantly increased static flexural modulus, strength, and fracture toughness, with the weak interfaces between fibers and parenchyma cells playing a crucial role in improving fracture toughness.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Forestry
Lin Chen, Zixuan Yu, Benhua Fei, Chaoyang Lin, Changhua Fang, Huanrong Liu, Xinxin Ma, Xiubiao Zhang, Fengbo Sun
Summary: Bamboo helmets, modified with urea-formaldehyde resin, offer excellent impact resistance and high gloss as an alternative to traditional plastic safety helmets. The structure design, inspired by the gradient characteristics of bamboo, along with the modification of the resin, successfully fills and repairs the defects of bamboo, leading to improved impact resistance.
Review
Materials Science, Paper & Wood
Hao Jia, Changhua Fang, Huanrong Liu, Xiubiao Zhang, Xinxin Ma, Fengbo Sun, Benhua Fei
Summary: Bamboo is a fast-growing and abundant resource with wide applications, and its warehousing has great potential. A reasonable warehouse can solve the issues of sustainable management and raw material stability, which is crucial for improving Chinese timber safety and quality of life. This paper introduces the experience and measures of bamboo warehousing, analyzes its advantages and developmental prospects, and provides technical guidance and ideas for the construction of the bamboo storage industry.
Article
Agricultural Engineering
Bin Huang, Changhua Fang, Lin Chen, Xianke Wang, Xinxin Ma, Huanrong Liu, Xiubiao Zhang, Fengbo Sun, Benhua Fei
Summary: Equal-arc shaped bamboo split is an ecological material with high material utilization rate. It can be used to manufacture various arc-shaped products. The deformation process of the bamboo split involves uniform heating and rapid deformation. Analyzing the deformation is beneficial for understanding the material's properties and providing a basis for future manufacturing processes.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Agricultural Engineering
Yu Luan, Yi-Fan Ma, Li-Tong Liu, Ben-Hua Fei, Chang-Hua Fang
Summary: Bamboo has attracted attention for its properties such as fast growth, sustainability, and high strength. However, the arc-shape of bamboo strips poses challenges in processing them into rectangular shapes, and the non-uniform distribution of vascular bundles results in heterogeneity in density and mechanical strength. To address these challenges, this study proposed an integrated thermo-hydro-mechanical treatment. After treatment, the bamboo strips exhibited increased density and improved mechanical properties.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Agricultural Engineering
Lin Chen, Jing Yuan, Xianke Wang, Bin Huang, Xinxin Ma, Changhua Fang, Xiubiao Zhang, Fengbo Sun, Benhua Fei
Summary: Bamboo pith ring plays an important role in reducing the deformation of bamboo and has little effect on the mechanical properties of bamboo composites.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Agricultural Engineering
Lin Chen, Jing Yuan, Xianke Wang, Bin Huang, Xinxin Ma, Changhua Fang, Xiubiao Zhang, Fengbo Sun, Benhua Fei
Summary: In this study, fine surface sanding was conducted to treat the bamboo surface, removing the wax layer and pith film to improve adhesive force. A fine gluing process model and deep learning model were constructed, and the formation of glue nail and glue interlocking structure after gluing was observed.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Agricultural Engineering
Bin Huang, Hao Jia, Benhua Fei, Lin Chen, Changhua Fang, Huanrong Liu, Xiubiao Zhang, Xinxin Ma, Fengbo Sun
Summary: Bamboo's unique hierarchical gradient structure contributes to its high strength and toughness, making it an excellent engineering material. This study analyzed the mechanical characteristics of bamboo under impact and found correlations between bamboo age, density, and chemical composition with fracture load. The establishment of structure-activity relationships can guide engineering applications of bamboo and biomimetic materials.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Forestry
Yu Luan, Changhua Fang, Hankun Wang, Yan Yu, Benhua Fei, Dan Xu, Dan Ren
Summary: The study successfully induced transcrystallinity (TC) in bamboo fiber anchored nano-TiO2/polypropylene composite and investigated its local properties. The formation of TC altered the chemical characteristics of the interface and improved the nanoscale mechanical properties of the interface and the composite.
WOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Forestry
Yuhui Sun, Jingya Gong, Huanrong Liu, Changhua Fang
Summary: Reasonable and novel cross-section designs of bamboo columns fabricated from bamboo oriented strand boards as structural members were investigated due to the low specific strength of bamboo oriented strand boards compared with commonly used wooden building materials. Experimental results and non-linear finite element modeling analyses validated the empirical equations for predicting the ultimate bearing capacity of bamboo columns, showing satisfactory agreement in failure modes and ultimate bearing capacity.
Article
Materials Science, Multidisciplinary
Yu Luan, Litong Liu, Yifan Ma, Yuting Yang, Menghong Jiang, Kate Semple, Chunping Dai, Benhua Fei, Changhua Fang
Summary: In this study, an energy-efficient hydrothermal compression process was proposed to flatten and densify arc-shaped bamboo, which led to the improvement of its utilization rate and mechanical properties. The study found that the bending strength, bending modulus, compressive strength, and shear strength of bamboo were significantly enhanced after compression. Increased density, altered failure modes and chemical characteristics, increased cellulose crystallinity and crystalline size, and increased nanoscale mechanical properties were observed as contributing factors to tissue strength enhancement. This process has the potential to replace the traditional strip milling and drying processes currently used to produce laminate bamboo lumber.
MATERIALS & DESIGN
(2023)
Article
Agricultural Engineering
Hao Jia, Lei Chen, Changhua Fang, Huanrong Liu, Xinxin Ma, Xiubiao Zhang, Benhua Fei, Fengbo Sun
Summary: The humidity levels during bamboo storage have significant effects on its quality. Increasing humidity leads to dimensional expansion of the cortex side of bamboo, decrease in cavity diameter ratio, decrease in total color difference value and mass density loss rate, and increase in peak compressive stress-strain displacement. 95% RH promotes mold reproduction but only infects the surface.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Green & Sustainable Science & Technology
Hao. Jia, Benhua Fei, Changhua Fang, Huanrong Liu, Xiubiao Zhang, Xinxin Ma, Fengbo Sun
Summary: This study used a drop weight impact tester to measure the bending impact resistance of bamboo at different ages and analyzed the correlation between chemical composition and impact mechanics. The results showed that the bending impact performance of bamboo and its cellulose crystallinity varied with the growth cycle. The correlation between impact mechanical properties and chemical composition gradually decreased.
JOURNAL OF RENEWABLE MATERIALS
(2023)
Article
Construction & Building Technology
Qi Jiang, Wei Liu, Shaopeng Wu, Xuanwen Gou
Summary: This study analyzes the erosion mechanisms of NaCl solution on asphalt concrete and finds that NaCl solution softens asphalt and promotes the intrusion of crystalline salt into it. Salt crystallization alters the surface roughness of aggregates, resulting in a decrease in skid resistance but an improvement in compressive strength. Additionally, the concentration of NaCl solution initially has no significant impact on the mechanical performance of asphalt concrete, but its domination gradually increases with the intensification of cyclic effects.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Lili Kan, Lan-qing Dai, Ning Kong, Bin Peng, Fei Wang
Summary: This paper investigates the effect of freezing and thawing cycles on the tensile behavior of cracked ultra-high performance concrete (UHPC). The results show that long-term freezing and thawing action deteriorates the cracking strength, tensile strength, tensile strain, and strain energy of cracked UHPC. On the other hand, the action of water generally favors the development of tensile properties of UHPC. The crack distribution tends to be unsaturated under freezing and thawing environment, and the re-hydration reaction is hindered. The pore structure near the crack varies under different environments.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Xin Xiao, Jingwei Li, Qingke Meng, Xiangshan Hou, Yanhui Liu, Xujiang Wang, Wenlong Wang, Shengtao Lu, Yuzhong Li, Yanpeng Mao, Tong Li
Summary: Preparing gypsum-based self-leveling mortar (GSLM) using beta-hemihydrate gypsum and solid wastes-derived sulfoaluminate cement (WSAC) can improve the mechanical performance of the mortar, but phosphorus impurities can weaken the hydration speed and degree.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Sihang Bao, Junzhen Di, Yanrong Dong, Ziqing Gao, Qing Gu, Yuanfang Zhao, Hongyu Zhai
Summary: Tailings dam break and leakage accidents pose a threat to the safety of people in mining areas and cause severe environmental pollution. This study focuses on solidifying tailing sand using microbial induced calcite precipitation (MICP) to improve strength and fix heavy metals. The curing time of MICP bio-cemented tailings is found to significantly impact the strength of tailings, while its effect on heavy metal fixation is minimal. The optimized MICP curing time is 10 days, resulting in improved strength and cementation of tailings particles.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Ferhat Benmahiddine, Fares Bennai, Achraf Charaka, Ameur El Amine Hamami, Abdelkader Tahakourt, Rafik Belarbi
Summary: This paper studied the effects of hysteresis on the hygrothermal behavior at the building scale. Through laboratory validation and numerical simulations, it was found that hysteresis has a significant impact on the relative humidity and total heat fluxes in buildings, while it does not have a noticeable effect on temperature variations.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
You Gao, Wei He, Xiayang Zhang, De'an Sun, Pei Li
Summary: This study determined the boundary line between the swelling and compression deformation zone in lateritic clay through wetting tests, and proposed a simple bimodal SWRC model. It also found that the existing strength model underestimated the tested values in the medium to high suction range, therefore a segmented strength equation was introduced for enhanced predictions of the strength properties of lateritic clay.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Prabhath Ranjan Kumar Soda, Asheer Mogal, Kalyan Chakravarthy, Nikhil Thota, Nimish Bandaru, Sanjay Kumar Shukla, K. M. Mini
Summary: This study investigates the use of encapsulated bacteria to improve the self-healing ability of concrete. Through various tests, it is found that using 20% cement-coated alginate beads (CCAB) and 5% nanosilica (NS) can achieve optimal strength and healing. This research is significant for enhancing the durability of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Shizhe Wang, Haiping Wu, Wen Yang, Wei Wang, Zhibo Zhu, Kun Nie, Luoxin Wang, Hua Wang, Jing Wu
Summary: In this study, photothermal-heat storage concrete (PHSC) was developed with excellent photothermal conversion performance and heat storage capacity. By absorbing and storing solar energy during the day and releasing it at night, PHSC can effectively reduce energy consumption in buildings.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Robin Deb, Jialuo He, Geetika Mishra, Yaghoob (Amir) Farnam
Summary: Incorporation techniques of phase change materials in cementitious composites have a significant influence on thermal properties. This study investigated the thermal behavior of low-temperature PCM when subjected to varying temperature change rates and pore confinement inside the porous network of lightweight aggregates. The results showed that ramp rates affect the nucleation and crystallization growth process during the phase transition, and the pore structure of the aggregates affects the supercooling phenomenon and confinement pressure of the PCM.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Eduardo Ferreira, Payam Sotoudeh, Dagmar Svecova
Summary: This study investigates the fatigue behavior of concrete under different stress reversal conditions. The results indicate that stress reversal generally causes more severe damage and reduces the cycles to failure compared to tensile fatigue. Additionally, adding some level of compression contributes to the energy required for failure under stress reversal fatigue. Specimens with higher concentration of fractured aggregates achieve longer fatigue lives.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Mag Raj Gehlot, Sandeep Shrivastava
Summary: This study evaluates the compatibility relationship between plaster bonds and the substrate under an accelerated aging environment, and finds that incorporating an appropriate amount of granite cutting waste can improve the strength parameters and adhesion of the cement mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Min Zhang, Qirui Luo, Mingke Deng, Shixing Zhao
Summary: This study investigated the bond behavior between carbon FRCM composites with added short fibers and concrete substrates. The effects of different factors were considered and 36 specimens were tested and discussed. The experimental results were analyzed in terms of failure mode, load-slip curve, and characteristic parameters, and the contribution of weft yarns was taken into account in the developed bondslip model.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Dengkai Liu, Hongniao Chen, Ray Kai Leung Su
Summary: The susceptibility of building stones to fire and high temperature was investigated in this study by examining their physical and mechanical properties. The results show that both compressive and tensile properties of stones are affected by temperature changes. The tensile strength is particularly sensitive to temperature changes, requiring special attention to the components subjected to tensile stress in stone buildings. Principal component analysis was used to predict the mechanical properties of stones, providing a new method for calculating the residual mechanical properties after high temperature or fire.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Joso Maria Raposo, Eduardo Cavaco, Luis Costa Neves, Eduardo Julio
Summary: This paper investigates the correlation between the friction coefficient and the surface roughness of concrete-to-concrete interfaces. Experimental tests were performed on specimens with different surface treatments, and the surface roughness parameters were analyzed and correlated with the shear strength and friction coefficient. The results showed that certain roughness parameters had a strong positive correlation with the friction coefficient, while others had little or no correlation. A novel combined roughness parameter with optimized correlation was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
Article
Construction & Building Technology
Chiara Riccardi, Massimo Losa
Summary: The interest in using bio materials in asphalt pavements is growing due to economic reasons and environmental benefits. This study aimed to review the use of bio extenders as additives in binders, with a focus on replacements greater than 20% of fossil binder. The properties of bio-extended binders were found to vary substantially depending on the biomass source and production process.
CONSTRUCTION AND BUILDING MATERIALS
(2024)
