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  • Open Access

    ARTICLE

    Analytical Investigation into the Rotational Performance of Glulam Bolted Beam-Column Connections under Coupled Bending Moment and Shear Force

    Xiaofeng Zhang1, Lisheng Luo2,*, Youfu Sun1, Xinyue Cui2, Yongqiang Zhang2

    Journal of Renewable Materials, Vol.11, No.4, pp. 2033-2054, 2023, DOI:10.32604/jrm.2022.023651

    Abstract Considering the glulam beam-column connection form and the number of bolts, monotonic loading test and finite element analysis was carried out on 9 connection specimens in 3 groups to study the rotational performance and failure mode of the connection. The test results revealed that compared with U-shaped connectors, T-shaped connectors can effectively improve the ductility of connections, and the increase in the number of bolts can reduce the initial stiffness and ductility of connections. By theoretical analysis, formulas for calculating the initial stiffness and ultimate moment of connections were deduced. Subsequently, the moment-rotation theoretical model of connections was established based… More > Graphic Abstract

    Analytical Investigation into the Rotational Performance of Glulam Bolted Beam-Column Connections under Coupled Bending Moment and Shear Force

  • Open Access

    ARTICLE

    Tensile Properties and Wear Resistance of Mg Alloy Containing High Si as Implant Materials

    Mengqi Cong*, Yang Zhang, Yunlong Zhang, Xiao Liu, Yalin Lu, Xiaoping Li

    Journal of Renewable Materials, Vol.11, No.4, pp. 1977-1989, 2023, DOI:10.32604/jrm.2023.023849

    Abstract Magnesium alloy has been considered as one of the third-generation biomaterials for the regeneration and support of functional bone tissue. As a regeneration implant material with great potential applications, in-situ Mg2Si phase reinforced Mg-6Zn cast alloy was comprehensively studied and expected to possess excellent mechanical properties via the refining and modifying of Mg2Si reinforcements. The present study demonstrates that the primary and eutectic Mg2Si phase can be greatly modified by the yttrium (Y) addition. The size of the primary Mg2Si phases can be reduced to ~20 μm with an addition of 0.5 wt.% Y. This phenomenon is mainly attributed to… More > Graphic Abstract

    Tensile Properties and Wear Resistance of Mg Alloy Containing High Si as Implant Materials

  • Open Access

    ARTICLE

    Experimental Study and Failure Criterion Analysis of Rubber Fibre Reinforced Concrete under Biaxial Compression-Compression

    Yanli Hu1,2, Peiwei Gao3,*, Furong Li4, Zhiqing Zhao5, Zhenpeng Yu6

    Journal of Renewable Materials, Vol.11, No.4, pp. 2055-2073, 2023, DOI:10.32604/jrm.2022.023612

    Abstract In order to examine the biaxial compression-compression properties of rubber fibre reinforced concrete (RFRC), an experimental study on RFRC under different lateral compressive stresses was carried out by considering different rubber replacement rates and polypropylene fibre contents. The failure modes and mechanical property parameters of different RFRC working conditions were obtained from the experiment to explore the effects of rubber replacement rate and polypropylene fibre content on the biaxial compression-compression properties of RFRC. The following conclusions were drawn. Under the influence of lateral compressive stress, the biaxial compression-compression failure mode gradually developed from a columnar pattern to a flaky pattern,… More >

  • Open Access

    ARTICLE

    On the Combination of Silica Fume and Ceramic Waste for the Sustainable Production of Mortar

    Zine El Abidine Rahmouni1,*, Mekki Maza1, Nadia Tebbal2, Messaouda Belouadah1

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.5, pp. 1083-1090, 2023, DOI:10.32604/fdmp.2022.021970

    Abstract The combined use of silica fume (SF) and ceramic waste (CW) for the production of mortar is studied. Sand is replaced by 5%, 10%, 15% and 20% of CW while a fixed 5% percentage (% wt of cement) of SF is used. The results show that the best results are obtained by using silica fume and ceramic waste sand with 15% weight of sand and 5% wt of cement. With the addition of sand ceramic waste (SCW), the mortar compressive strength and density increase, while the porosity displays an opposite trend. The experimental analysis is complemented with theoretical considerations on… More > Graphic Abstract

    On the Combination of Silica Fume and Ceramic Waste for the Sustainable Production of Mortar

  • Open Access

    ARTICLE

    Performance Improved of a Lime and Hemp-Based Concrete through the Addition of Metakaolin

    Suzanne Daher*, Amar Benazzouk, Haïkel Ben Hamed, Thierry Langlet

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.5, pp. 1091-1113, 2023, DOI:10.32604/fdmp.2023.020348

    Abstract This work describes in detail the experimental investigation of the physico-mechanical properties of nonstructural hemp concrete (usually used as insulating wall material) when the Air-lime based Tradial PF70 binder is partially replaced using Metakaolin. The objective is to reduce the amount of free Ca2+ ions in the binder as these are responsible for the degradation of vegetables particles and can therefore induce a loss of mechanical performances. In order to assess the effectiveness of pozzolanic reaction, amounts of 0%, 10%, and 20% vol. of Air-lime binder were replaced by the Metakaolin material, while testing the mechanical properties of concrete specimens… More >

  • Open Access

    ARTICLE

    Classification of Principal Wood Species in China Based on the Physiomechanical Properties

    Jianyi Zhu1, Hui Peng1,2, Xiaoning Lu1,2, Jianxiong Lyu1,2,3, Tianyi Zhan1,2,*

    Journal of Renewable Materials, Vol.11, No.3, pp. 1425-1437, 2023, DOI:10.32604/jrm.2022.023464

    Abstract Many tree species are planted in China with variable properties and usage. Toward exploring the structure-properties relationships of wood and classifying the species more reasonably, the physiomechanical properties of the domestic wood species in China were analyzed statistically. According to the correlation analysis, the mechanical properties were closely related to the wood density. Except impact toughness and cleavage strength, the correlation coefficients between mechanical properties and densities were more than 0.8. However, shrinkage properties showed fewer correlations with densities, and the coefficient was no more than 0.7. Primary component analysis was proved to be feasible to explore the information of… More >

  • Open Access

    ARTICLE

    High Water Resistance and Enhanced Mechanical Properties of Bio-Based Waterborne Polyurethane Enabled by in-situ Construction of Interpenetrating Polymer Network

    Henghui Deng1,2, Jingyi Lu1,2, Dunsheng Liang1,2, Xiaomin Wang1,2, Tongyao Wang1,2, Weihao Zhang1,2, Jing Wang3,*, Chaoqun Zhang1,2,*

    Journal of Renewable Materials, Vol.11, No.3, pp. 1209-1222, 2023, DOI:10.32604/jrm.2022.023371

    Abstract In this study, acrylic acid was used as a neutralizer to prepare bio-based WPU with an interpenetrating polymer network structure by thermally induced free radical emulsion polymerization. The effects of the content of acrylic acid on the properties of the resulting waterborne polyurethane-poly (acrylic acid) (WPU-PAA) dispersion and the films were systematically investigated. The results showed that the cross-linking density of the interpenetrating network polymers was increased and the interlocking structure of the soft and hard phase dislocations in the molecular segments of the double networks was tailored with increasing the content of acrylic acid, leading to enhancement of the… More > Graphic Abstract

    High Water Resistance and Enhanced Mechanical Properties of Bio-Based Waterborne Polyurethane Enabled by <i>in-situ</i> Construction of Interpenetrating Polymer Network

  • Open Access

    ARTICLE

    Experimental Testing of Cellular Construction Materials Containing Flax Particles

    Hamadou-Ali Mohamed1,*, Benazzouk Amar1,*, Haïkel Ben Hamed1, Arash Jamali2

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 723-741, 2023, DOI:10.32604/fdmp.2022.021841

    Abstract The feasibility of a sustainable non-autoclaved cellular concrete, based on flax vegetable co-products, for the production of usable specimen in the lightweight construction field, has been investigated experimentally. The produced specimen, containing various volume ratios of flax particles with respect to preformulatd Tradical PF70 lime binder of 0, 1, and 2, were lightened by creating a porous structure in the matrix through the addition of 0.3% wt. Aluminium powder (able to react with calcium hydroxide from the binder and result in microscopic air-bubbles). Fresh and hardened specimen properties, including hydration, fresh density, porosity, hardened density, compressive and flexural strengths, toughness… More >

  • Open Access

    ARTICLE

    Effect of Dry-Wet Cycles on the Transport and Mechanical Properties of Cement Mortar Subjected to Sulfate Attack

    Wei Chen1,*, Weijie Shan1, Yue Liang1, Frederic Skoczylas2

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 679-696, 2023, DOI:10.32604/fdmp.2022.021249

    Abstract This study deals with the analysis of the detrimental effects of a “sulfate attack” on cement mortar for different dry-wet cycles. The mass loss, tensile strength, and gas permeability coefficient were determined and analyzed under different exposure conditions. At the same time, nitrogen adsorption (NAD), scanning electron microscopy (SEM), and X-ray diffraction (XRD) techniques were used to analyze the corresponding variations in the microstructure and the corrosion products. The results show that certain properties of the cement mortar evolve differently according to the durations of the dry-wet cycles and that some damage is caused to the mortars in aqueous solution.… More >

  • Open Access

    REVIEW

    Mechanical Properties and Durability of Sustainable Concrete Manufactured Using Ceramic Waste: A Review

    Peng Zhang1, Peishuo Zhang1, Jingjiang Wu2, Zhenhui Guo2, Yong Zhang2, Yuanxun Zheng1,*

    Journal of Renewable Materials, Vol.11, No.2, pp. 937-974, 2023, DOI:10.32604/jrm.2022.023290

    Abstract Green and sustainable concrete has attracted significant attention from the construction industry and researchers since it was proposed. The ceramic waste materials are often directly buried in the ground or placed in an open dump, and the accumulation of ceramic waste contributes to environmental pollution, which makes the recycling of ceramic waste quite urgent. Owing to the pozzolanic activity, excellent mechanical properties and durability, industrial ceramic waste is considered as a suitable substitute for cement or natural aggregates to fabricate renewable concrete. In this paper, the pozzolanic activity of ceramic waste and the workability, mechanical performance, and durability of ceramic… More >

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