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  • Open Access

    ARTICLE

    Experimental Study of Moso Bamboo to-Steel Connections with Embedded Grouting Materials

    Shidong Nie1,2, Wei Fu1,2, Hui Wang1,2,*, Di Wu1,2,3, Min Liu1,2, Junlong Wang4

    Journal of Renewable Materials, Vol.11, No.3, pp. 1401-1423, 2023, DOI:10.32604/jrm.2022.023446 - 31 October 2022

    Abstract Moso bamboos have attracted excessive attention as a renewable green building material to the concept of sustainable development. In this paper, the 20 bolted Moso bamboo connection specimens with embedded steel plates and grouting materials were designed according to connection configurations with different bolt diameters and end distance of bolt holes, and their bearing capacities and failure modes were analyzed by static tension tests. According to the test results of all connectors, the failure modes of the specimens are divided into four categories, and the effects of bolt diameter and bolt hole end distance on More >

  • Open Access

    ARTICLE

    Effects of Hydrothermal Environment on the Deformation of the Thin Bamboo Bundle Veneer Laminated Composites

    Ge Wang, Linbi Chen, Haiying Zhou*, Shanyu Han, Fuming Chen*

    Journal of Renewable Materials, Vol.11, No.3, pp. 1499-1511, 2023, DOI:10.32604/jrm.2022.025130 - 31 October 2022

    Abstract To overcome warping in thin bamboo bundle veneer laminated composites (TBLC), their hydrothermal deformation characteristics were systematically investigated in this study. It was found that TBLCs accelerated the release of internal stress in the thickness direction in a hydrothermal environment, which increased their warpage. TBLCs showed increased warpage in the width and diagonal directions upon increasing the temperature. The warpage of Type E increased by 155.88% and 66.67% in the width and diagonal directions, respectively, when the temperature increased from 25 C to 100 C. The symmetrical TBLC with cross-lay-up and odd layers displayed better More >

  • Open Access

    ARTICLE

    Elevated Temperature Properties of Bamboo Shaving Reinforced Geopolymer Composites

    Xinli Zhang1, Jiayu Zhang1, Zuhua Zhang2,*, Yiqiang Wu1,*, Yingfeng Zuo1

    Journal of Renewable Materials, Vol.11, No.1, pp. 27-40, 2023, DOI:10.32604/jrm.2023.023400 - 10 August 2022

    Abstract Geopolymer is a new alternative cement binder to produce concrete. In the present study, a novel geopolymer composites containing bamboo shaving (0–2 wt.%) were fabricated and exposed to the temperatures of 200°C, 400°C, 600°C and 800°C. Physical properties, micro-structure, and mechanical strengths of the geopolymer composites were evaluated before and after heating in order to understand their thermal properties, which are essential for the use as building materials. As the temperature rises, the drying shrinkage and apparent porosity of the composites increase, while the compressive and bending strengths decrease. At the temperature range of 200°C–800°C, the… More >

  • Open Access

    ARTICLE

    Optimization of Photo-Fenton Catalyst Preparation Based Bamboo Carbon Fiber by Response Surface Methodology

    Yizhang Wang1, Zhaoyang Yu1, Jinbo Hu1,2,*, Shanshan Chang1, Yuan Liu1, Ting Li2, Gonggang Liu1,*, Xiaodong (Alice) Wang3

    Journal of Renewable Materials, Vol.11, No.1, pp. 147-165, 2023, DOI:10.32604/jrm.2023.021306 - 10 August 2022

    Abstract In this paper, the residue from bamboo factory has been used to design photo-Fenton catalyst, which has the advantages of low cost and magnetic recycling. The photo-Fenton catalytic performance of the biocarbon-based catalyst was excellent and its optimal preparation process was also explored by response surface methodology. First, bamboo-carbon fiber was selected as the photo-Fenton catalyst carrier. Subsequently, the surface of the carbon fiber was modified, with which dopamine, nano-Fe3O4 and nano-TiO2 were successively loaded by hydrothermal method. After examined single factor tests, four factors including dopamine concentration, ferric chloride mass, P25 titanium dioxide mass and… More > Graphic Abstract

    Optimization of Photo-Fenton Catalyst Preparation Based Bamboo Carbon Fiber by Response Surface Methodology

  • Open Access

    ARTICLE

    Research on the Bending Impact Resistance and Transverse Fracture Characteristics of Bamboo under the Action of Falling Weight

    Hao Jia1,2, Benhua Fei1,2, Changhua Fang1,2, Huanrong Liu1,2, Xiubiao Zhang1,2, Xinxin Ma1,2, Fengbo Sun1,2,*

    Journal of Renewable Materials, Vol.11, No.1, pp. 473-490, 2023, DOI:10.32604/jrm.2022.023548 - 10 August 2022

    Abstract Drop weight impact tester was used to accurately measure the bending impact resistance of various parts of Phyllostachys edulis, commonly known as moso bamboo, with a growth cycle of 3–8 years. Cellulose crystallinity in the bottom (B), middle (M) and top (T) of bamboo at different ages was calculated using peak height analysis in X-ray diffraction. Heatmap of Spearman correlation analysis was used to represent the correlation between chemical composition and impact mechanics. The breaking load (BL), fracture energy (FE) and impact deflection (ID) of 3–8-yearold bamboo were found to be in the range of ~670–2120 N, ~5.17–15.55 J,… More > Graphic Abstract

    Research on the Bending Impact Resistance and Transverse Fracture Characteristics of Bamboo under the Action of Falling Weight

  • Open Access

    REVIEW

    A Review on the Mechanical Behaviour of Bamboo Reinforced Concrete Beams

    Usama Sayed1,2, Assima Dauletbek1,2, Xue Xin1,2, Rodolfo Lorenzo3, Haitao Li1,2,*

    Journal of Renewable Materials, Vol.10, No.12, pp. 3629-3657, 2022, DOI:10.32604/jrm.2022.022624 - 14 July 2022

    Abstract In light of the increasing demand for sustainable building materials, the effectiveness of bamboo utilization in various fields has become the object of scientists’ close attention. The increased interest in bamboo is explained by its sustainable characteristics, which make it the most preferred material for environmentally friendly and costeffective construction compared to conventional ones. Applicability of bamboo is vast and diverse: from decoration and furniture to structural members and reinforcement. Due to the low price, rich resources, and high elasticity, bamboo culms have also been used as an alternative to steel reinforcement in concrete structures. More >

  • Open Access

    ARTICLE

    Study on the Effect of Two-Step Saturated Steam Heat Treatment Process on the Properties of Reconstituted Bamboo

    Xin Han1,4, Zhichao Lou1,3,4,*, Chenglong Yuan1,4, Xinwu Wu1,4, Jie Liu1,4, Fujin Weng2, Yanjun Li1,4,*

    Journal of Renewable Materials, Vol.10, No.12, pp. 3313-3334, 2022, DOI:10.32604/jrm.2022.021066 - 14 July 2022

    Abstract With the aim of utilizing reconstituted bamboo as a carbon cycle-oriented material, the improvement of physical and mechanical properties has been actively studied to solve using problems. The saturated steam heat treatment process has been widely used in worldwide. With the development and exploration of this technology, two-step saturated steam heat treatment process appears in some practical production, that is, after a period of saturated steam heat treatment at a lower temperature, the bamboo bundles are taken out and seasoned for a period of time, and then put back into the heat tank again, and… More >

  • Open Access

    ARTICLE

    Characterization of Carboxymethyl Cellulose Made from Bamboo Harvesting Residues

    Shuangyan Zhang*, Shun Yang, Chuangui Wang, Weiyi Su, Huangfei Lv, Yuanyuan Li

    Journal of Renewable Materials, Vol.10, No.12, pp. 3229-3241, 2022, DOI:10.32604/jrm.2022.020489 - 14 July 2022

    Abstract Bamboo harvesting residues are wastes by-products of bamboo industries that contain holocellulose for about 63.14% to 70.71%, which often be discarded, incinerated or buried. In this study, carboxymethyl cellulose was prepared from bamboo harvesting residues (bamboo-branch and bamboo-tip) as raw materials. The chemical composition of bamboo harvesting residues, the viscosity and degree of substitution of carboxymethyl cellulose were determined. Carboxymethyl cellulose obtained was further characterized and compared by means of FTIR, SEM, XRD and TG. Results showed that under the optimized identical conditions, the viscosity and degree of substitution of carboxymethyl cellulose from bamboo-branch and More > Graphic Abstract

    Characterization of Carboxymethyl Cellulose Made from Bamboo Harvesting Residues

  • Open Access

    ARTICLE

    Synthesis and Characterization of a Novel Bamboo Shaving Geopolymer Composite

    Jiayu Zhang, Zhenyang Li, Xinli Zhang*

    Journal of Renewable Materials, Vol.10, No.11, pp. 2871-2881, 2022, DOI:10.32604/jrm.2022.019373 - 29 June 2022

    Abstract Geopolymers are inorganic aluminosilicate materials, which have been a great research interest as a material for sustainable development. However, they possess relatively low toughness properties similar to brittle solids. The limitation may be altered by fiber reinforcement to improve their strength and toughness. This research describes the synthesis of bamboo shaving (BS) reinforced geopolymer composites and the characterization of their mechanical properties. The effect of BS content (0–2 wt. %) on the physical and mechanical properties and microstructure of metakaolin based geopolymer paste were investigated. The workability, setting time, bulk density, apparent porosity, thermal conductivity,… More >

  • Open Access

    ARTICLE

    Strength Performance and Microstructure Characteristic of Naturally-Bonded Fiberboard Composite from Malaysian Bamboo (Bambusa vulgaris)

    Shahril Anuar Bahari1, Mohd Nazarudin Zakaria1, Syaiful Osman1, Falah Abu1, Mohamad Jani Saad2, Reza Hosseinpourpia3,*

    Journal of Renewable Materials, Vol.10, No.10, pp. 2581-2591, 2022, DOI:10.32604/jrm.2022.021313 - 08 June 2022

    Abstract This study investigated the mechanical properties and microstructural characteristics of fiberboard composite produced by naturally-bonded Malaysian bamboo fiber (Bambusa vulgaris). The components that obtained through soda pulping of bamboo culms such as fiber and black liquor, were used for the preparation of high-density fibreboard composite at two target densities of 850 and 950 kg/m3. The bamboo fiberboard composite (BFC) were then produced at 200°C and two pressing parameters of 125 and 175 s/mm. The mechanical properties, e.g., flexural strength and internal bonding (IB) of BFC samples were evaluated according to BS EN 310: 1993 and BS EN 319: 1993, More > Graphic Abstract

    Strength Performance and Microstructure Characteristic of Naturally-Bonded Fiberboard Composite from Malaysian Bamboo (<i>Bambusa vulgaris</i>)

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