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Search Results (9)
  • Open Access

    ARTICLE

    Influence of Bayer Red Mud on the Operational and Mechanical Characteristics of Composite Cement Mortar

    Cheng Hu1,2, Weiheng Xiang1,3,*, Ping Chen2,3, Yi Yang4,5, Libo Zhou3, Jiufang Jiang5, Shunkai Li2,4, Yang Ming1, Qing Li3

    Journal of Renewable Materials, Vol.11, No.11, pp. 3945-3956, 2023, DOI:10.32604/jrm.2023.027544

    Abstract The aim of this study is to enhance the value and utilization of red mud generated in the Bayer process by preparing composite cement mortars. The effects of two different types of Bayer red mud with varying physical and chemical characteristics on the fluidity, mechanical strength, mineral composition, and microstructure of the composite cement mortar were systematically evaluated. The results showed that the optimal addition of red mud A was 10 wt%, while it was 20 wt% for red mud B. The mechanical properties of the composite cement mortar met the standards for P·O42.5 cement. Furthermore, the composite mortar with… More >

  • Open Access

    ARTICLE

    Subsea Compensation of Pressure Based on Reducer Bellows

    Shihong Xiao1,2,*, Shichao Zhou1,*, Linlin Yue1, Xianyou He1, Maolin Xiang1

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.10, pp. 2549-2567, 2023, DOI:10.32604/fdmp.2023.025063

    Abstract In this study, the pressure compensation mechanism of a reducer bellows is analyzed. This device is typically used to reduce the size of undersea instruments and improve related pressure resistance and sealing capabilities. Here, its axial stiffness is studied through a multi-fold approach based on theory, simulations and experiments. The results indicate that the mechanical strength of the reducer bellows, together with the oil volume and temperature are the main factors influencing its performances. In particular, the wall thickness, wave number, middle distance, and wave height are the most influential parameters. For a certain type of reducer bellows, the compensation… More >

  • Open Access

    ARTICLE

    Preparation and Study of Borosilicate Foam Glass with High Thermal Insulation and Mechanical Strength

    Yiwen Zhang1, Jianjun Xie1,*, Minghui Sun1, Shaolong Wang1, Tengfei Xu2,3, Yonggen Xu2,3, Xiaoqing Ding2,3, Ying Shi1, Lei Zhang1

    Journal of Renewable Materials, Vol.11, No.5, pp. 2125-2141, 2023, DOI:10.32604/jrm.2023.025127

    Abstract Foam glass is a kind of green building material that is widely used because of its excellent thermal insulation and mechanical properties. In this study, the borosilicate foam glass was fabricated by powder sintering method using recycled soda lime waste glass, quartz, and borax as the primary raw materials. CaCO3 was used as a foaming agent and Na2CO3 as a flux agent. Results showed that as the quartz content decreases from 30 to 17.5 wt.% and borax content increases from 5 to 17.5 wt.%, the pore size, porosity, and thermal insulation of borosilicate foam glass increase significantly, while the compressive strength decreases… More > Graphic Abstract

    Preparation and Study of Borosilicate Foam Glass with High Thermal Insulation and Mechanical Strength

  • Open Access

    ARTICLE

    Hydration Characteristics and Mechanical Properties of Cement-Based Materials Modified by Calcined Zeolite and Montmorillonite

    Lingling Qin1, Mengya Zhou1, Jiahao Yan1, Ping Duan1,2,3,4,*, Yingcan Zhu5,*, Wei Chen6, Zuhua Zhang7, Aiguo Wang2

    Journal of Renewable Materials, Vol.11, No.5, pp. 2191-2208, 2023, DOI:10.32604/jrm.2023.025197

    Abstract Montmorillonite and clinoptilolite zeolite were used as representative materials to prepare calcined clay-cement binary cementitious materials in order to study the effect of calcination treatment on the activation of clay minerals and the activity difference between layered and framed clays in this research. The influence of different calcined clay content (2%, 4%, 6%, 8%, 10%) on the fluidity, compressive strength, microstructure, phase change, and hydration heat of cement-based materials were analyzed. The calcined clay improves the fluidity of cement-based materials as compared with the uncalcined group. The addition of calcined montmorillonite (CMT) improves the development of mechanical strength, and the… More > Graphic Abstract

    Hydration Characteristics and Mechanical Properties of Cement-Based Materials Modified by Calcined Zeolite and Montmorillonite

  • Open Access

    ARTICLE

    Mechanical Characterization of Bamboo and Glass Fiber Biocomposite Laminates

    William Eberts, Matthew T. Siniawski*, Timothy Burdiak, Nick Polito

    Journal of Renewable Materials, Vol.3, No.4, pp. 259-267, 2015, DOI:10.7569/JRM.2014.634137

    Abstract Single-ply biocomposite laminates were fabricated with two different woven fabrics and a bio-based resin using a wet layup technique at room temperature. A highly elastic, stockinette weave bamboo fiber fabric and a thicker, inelastic plain weave bamboo fabric were both investigated. The elastic fabric was pre-strained at 25% intervals, ranging from 0–100% of its original length. Samples made with E-Glass and S-Glass, two common glass fiber reinforcements, were also fabricated using the bioresin as benchmarks. The ultimate strength and modulus of elasticity characteristics of the composites were determined using the ASTM D3039/ D3039M-08 standard test method for determining the tensile… More >

  • Open Access

    ARTICLE

    Investigation on Thermal Insulation and Mechanical Strength of Lightweight Aggregate Concrete and Porous Mortar in Cold Regions

    Jianan Wu1, Ke Xue2, Zhaowei Ding3, Lei Lang3, Kang Gu3, Xiaolin Li4, Mingli Zhang5, Desheng Li3,6,*

    Journal of Renewable Materials, Vol.10, No.12, pp. 3167-3183, 2022, DOI:10.32604/jrm.2022.020265

    Abstract Thermal insulation is an important indicator to evaluate the construction material in cold region engineering. As we know, adding the industrial waste as lightweight aggregate or creating the pore inside the cement-based composite could make the texture loose, and the thermal insulating capacity of the material would be improved with this texture. Using these methods, the industrial by-product and engineering waste could be cycled in an efficient way. Moreover, after service the fragmented cement composites paste could be used as aggregate in the thermal insulating concrete again. While the porous texture is not favorable for the mechanical strength and long-term… More > Graphic Abstract

    Investigation on Thermal Insulation and Mechanical Strength of Lightweight Aggregate Concrete and Porous Mortar in Cold Regions

  • Open Access

    ARTICLE

    Comparative Study on Various Strength Parameters of Structural Elements Made from Cross-Laminated Timber

    Mohammad Anwar-Us-Saadat1, Janeshka Goonewardena2, Bidur Kafle2, Mahmud Ashraf2,*, Mahbube Subhani2

    Journal of Renewable Materials, Vol.10, No.6, pp. 1575-1606, 2022, DOI:10.32604/jrm.2022.018919

    Abstract Cross laminated timber (CLT) is an innovative and environment friendly engineered timber product with superior structural performance. CLT offers strong resistance against both in-plane and out-of-plane loading. Hence, it is widely used as floors, roofs or wall elements. Considerable experimental research on CLT under various loading conditions has been done in the recent past. This article presents a comprehensive review of various design methods to determine basic mechanical properties such as tension, compression and rolling shear strength of CLT with primary focus on Norway spruce. All relevant experimental data available from existing literature were collated and consequently been used to… More >

  • Open Access

    ARTICLE

    Flexible Nanopaper Composed of Wood-Derived Nanofibrillated Cellulose and Graphene Building Blocks

    Qing Li1, Ming Dai1, Xueren Qian1, Tian Liu1, Zhenbo Liu1, Yu Liu1, Ming Chen1, Wang He1, Suqing Zeng1, Yu Meng1, Chenchen Dai1, Jing Shen1, Yingtao Liu1, Wenshuai Chen1, Wenbo Liu1,*, Ping Lu2,*

    Journal of Renewable Materials, Vol.9, No.3, pp. 451-461, 2021, DOI:10.32604/jrm.2021.011655

    Abstract Nanopaper has attracted considerable interest in the fields of films and paper research. However, the challenge of integrating the many advantages of nanopaper still remains. Herein, we developed a facile strategy to fabricate multifunctional nanocomposite paper (NGCP) composed of wood-derived nanofibrillated cellulose (NFC) and graphene as building blocks. NFC suspension was consisted of long and entangled NFCs (10–30 nm in width) and their aggregates. Before NGCP formation, NFC was chemically modified with a silane coupling agent to ensure that it could interact strongly with graphene in NGCP. The resulting NGCP samples were flexible and could be bent repeatedly without any… More >

  • Open Access

    ARTICLE

    Mechanical Strength and Structural Basis of β2 Integrin to Mediate Neutrophil Accumulation on Liver Sinusoidal Endothelial Cells: A Study Using Atomic Force Microscopy and Molecular Dynamics Simulations

    Ning Li1, 2, 3, Xiao Zhang1, 2, Peiwen Li1, 2, Hao Yang1, 2, Chunfang Tong1, 2, Shouqin Lü1, 2, Yan Zhang1, 2, Zhiyi Ye3, Jun Pan3, *, Mian Long1, 2, *

    CMES-Computer Modeling in Engineering & Sciences, Vol.116, No.2, pp. 263-279, 2018, DOI:10.31614/cmes.2018.04079

    Abstract Neutrophil (PMN) accumulation on liver sinusoidal endothelial cells (LSECs) is crucial to pathogen clearance and tissue damage in the liver sinusoids and controlled by a series of adhesion molecules expressed on the surface of PMNs and LSECs. The role of lymphocyte function-associated antigen-1 (LFA-1) and macrophage-1 antigen (Mac-1) in this process is still contentious. Here we compared the dynamic force spectra of the binding of β2 integrin to intercellular adhesion molecule-1 (ICAM-1) on LSECs using atomic force microscopy (AFM) and performed free and steered molecular dynamics (MD) simulations to analyze their structural bases of LFA-1- or Mac-1-I-domain and ICAM-1-D1 or… More >

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