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  • Open Access

    ARTICLE

    Durability of Green Concrete in Severe Environment

    Yonggan Yang1,2,3,4, Zihao Kang1, Binggen Zhan1,3,*, Peng Gao1,3,*, Qijun Yu1, Yanlai Xiong4, Jingfeng Wang1,3, Yunsheng Zhang5

    Journal of Renewable Materials, Vol.11, No.4, pp. 1895-1910, 2023, DOI:10.32604/jrm.2023.025059 - 01 December 2022

    Abstract In this paper, the effects of different mineral admixtures and sulfate solution types on the appearance, mass change rate, relative dynamic elastic modulus, and corrosion resistance coefficient of concrete were systematically studied. X-ray Diffraction (XRD), Mercury Intrusion Porosimetry (MIP), Scanning Electron Microscopy (SEM), and X-ray Computed Tomography (X-CT) were used to explore and analyze the changes in the microstructure and the corrosion products of concrete in the sulfate solution. The results show that the existence of magnesium ions accelerates concrete deterioration. There is a critical dosage of fly ash for magnesium sulfate resistance of concrete.… More > Graphic Abstract

    Durability of Green Concrete in Severe Environment

  • Open Access

    REVIEW

    A Review of the Advances Made in Improving the Durability of Welded Wood against Water in Light of the Results of African Tropical Woods Welding

    Jean Jalin Eyinga Biwôlé1,4,*, Achille Bernard Biwolé1, Antonio Pizzi4,*, Joseph Zobo Mfomo1, César Segovia3, Atangana Ateba2, Evariste Fedoung Fongnzossie1, Sahbi Ouertani4,5, Xinyi Chen4, Bénoît Ndiwe1,2, Dieudonné Abessolo1,2, Pierre-Jean Meausoone4

    Journal of Renewable Materials, Vol.11, No.3, pp. 1077-1099, 2023, DOI:10.32604/jrm.2023.024079 - 31 October 2022

    Abstract Wood plays a major role in the production of furniture and wooden structures. Nevertheless, in this process, the massive use of adhesives and plural connectors remains a definite problem for health and the environment. Therefore, wood welding is a breakthrough in this respect. This paper reviews the applications of wood welding in furniture and construction and then examines advances in improving the durability of welded wood against water. Our contribution also highlights the need to join African tropical woods using the rotational friction welding technique. According to our results, these woods present interesting chemical singularities, 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 - 22 September 2022

    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… More >

  • Open Access

    REVIEW

    Workability and Durability of Concrete Incorporating Waste Tire Rubber: A Review

    Peng Zhang, Xixi Wang, Juan Wang*, Tianhang Zhang

    Journal of Renewable Materials, Vol.11, No.2, pp. 745-776, 2023, DOI:10.32604/jrm.2022.022846 - 22 September 2022

    Abstract Environmental problems caused by waste tires are becoming increasingly prominent. There is an urgent need to find a green way to dispose of waste tires, and scholars have made considerable efforts in this regard. In the construction industry, rubber extracted from waste tires can be added to concrete to alleviate environmental problems to a certain extent. As a new building material, rubber concrete has superior properties compared to ordinary concrete and has been widely used in many fields. Numerous studies have been conducted worldwide to investigate the effect of waste tire rubber on the performance… More >

  • Open Access

    ARTICLE

    Modification of Wood by Tannin-Furfuryl Alcohol Resins–Effect on Dimensional Stability, Mechanical Properties and Decay Durability

    Mahdi Mubarok1,2, Christine Gérardin-Charbonnier1,*, Elham Azadeh1, Firmin Obounou Akong1, Stéphane Dumarçay1, Antonio Pizzi1, Philippe Gérardin1,*

    Journal of Renewable Materials, Vol.11, No.2, pp. 505-521, 2023, DOI:10.32604/jrm.2022.024872 - 22 September 2022

    Abstract Furfurylation is a well-known wood modification technology. This paper studied the effect of tannin addition on the wood furfurylation. Three kinds of dicarboxylic acids, adipic acid, succinic acid, and tartaric acid, as well as glyoxal as a comparing agent, were used to catalyse the polymerisation of furanic or tannin-furanic solutions during wood modification. Impregnation of furanic or tannin-furanic solution at a certain concentration into the wood followed with curing at 103°C for a specific duration was performed for the wood modification. Different properties of the modified woods like dimensional stability, resistance of treatment to leaching, More >

  • Open Access

    ARTICLE

    Mechanical Test and Meso-Model Numerical Study of Composite Rubber Concrete under Salt-Freezing Cycle

    Mingkai Sun1,*, Yanan Wang2, Pingwei Jiang1, Zerong Song3, Zhan Gao4, Jiaming Xu5

    Journal of Renewable Materials, Vol.11, No.2, pp. 643-668, 2023, DOI:10.32604/jrm.2022.022168 - 22 September 2022

    Abstract A composite rubber concrete (CRC) was designed by combining waste tire rubber particles with particle sizes of 3~5 mm, 1~3 mm and 20 mesh. Taking the rubber content of different particle sizes as the influencing factors, the range and variance analysis of the mechanical and impermeability properties of CRC was carried out by orthogonal test. Through analysis, it is concluded that the optimal proportion of 3~5 mm, 1~3 mm, and 20 mesh particle size composite rubber is 1:2.5:5. 5 kinds of CRC and 3 kinds of ordinary single-mixed rubber concrete (RC) with a total content… More >

  • Open Access

    REVIEW

    Research Progress of Eco-Friendly Portland Cement Porous Concrete: A Review

    Xin Cai1,2, Fan Li1, Xingwen Guo2,*, Ren Li3, Yanan Zhang1, Qinghui Liu2, Minmin Jiang4

    Journal of Renewable Materials, Vol.11, No.1, pp. 103-130, 2023, DOI:10.32604/jrm.2022.022684 - 10 August 2022

    Abstract With the great impetus of energy conservation and emission reduction policies in various countries, the proposal of concepts such as “Sponge City” and “Eco-City”, and the emphasis on restoration and governance of ecological environment day by day, portland cement porous concrete (PCPC), as a novel building material, has attracted more and more attention from scientific researchers and engineers. PCPC possesses the peculiar pore structure, which owns numerous functions like river embankment protection, vegetation greening as well as air-cleaning, and has been of wide application in different engineering fields. This paper reviews the salient properties of More > Graphic Abstract

    Research Progress of Eco-Friendly Portland Cement Porous Concrete: A Review

  • Open Access

    ARTICLE

    Study on the Durability of Recycled Powder Concrete against Sulfate Attack under Partial Immersion Condition

    Hualei Bai1,2, Ying Li1,2,*, Dahu Dai1,2

    Journal of Renewable Materials, Vol.10, No.11, pp. 3059-3078, 2022, DOI:10.32604/jrm.2022.020148 - 29 June 2022

    Abstract In order to make full use of waste recycled fine powder (RFP) in concrete and achieve the goal of carbon neutrality in the concrete industry, the durability of sulfate resistance is an important aspect of evaluating the performance of recycled powder concrete (RPC). Therefore, the durability of RPC under partial sulfate immersion was studied to provide theoretical guidance for understanding the erosion mechanism of RPC. The compressive strength, mass loss, and microstructure change patterns of RPC under partial immersion of 5% Na2SO4 and MgSO4 solutions were analyzed by cubic compressive strength, mass loss rate, SEM-EDS, and… More >

  • Open Access

    ARTICLE

    Damage and Deterioration Model of Basalt Fiber/Magnesium Oxychloride Composites Based on GM(1, 1)-Markov in the Salt Spray Corrosion Environment

    Jianqiao Yu1,*, Hongxia Qiao1,2, Theogene Hakuzweyezu1, Feifei Zhu1

    Journal of Renewable Materials, Vol.10, No.11, pp. 2973-2987, 2022, DOI:10.32604/jrm.2022.019620 - 29 June 2022

    Abstract This study was designed to solve the problem of magnesium hazards due to potash extraction in the salt lake region. Using basalt fiber (BF) as the reinforcement material and magnesium oxychloride cement (MOC) as the gelling material, a BF/MOC composite material was prepared. Firstly, the effect of BF addition content on the basic mechanical properties of the composites was investigated. Then, through the salt spray corrosion test, the durability damage deterioration evaluation analysis was carried out from both macroscopic and microscopic aspects using mass change, relative dynamic modulus of elasticity (RDME) change, SEM analysis and… More >

  • Open Access

    ARTICLE

    Environmental and Durability Perspective of the Use of Curaua Fiber Treated in Mortars

    Afonso R. G. de Azevedo1,*, Marcelo Nascimento2, Dirlane do Carmo3, Markssuel T. Marvila4, Gustavo de C. Xavier1, Sergio Neves Monteiro4

    Journal of Renewable Materials, Vol.10, No.9, pp. 2409-2429, 2022, DOI:10.32604/jrm.2022.020503 - 30 May 2022

    Abstract The use of natural lignocellulosic fibers (NLFs) as a reinforcement mechanism for cementitious composites, such as mortar, has been investigated in the last decades. However, their application has often been restricted to technological evaluation research. A NLF with great potential the curaua, which after treatment with NaOH solution, proved to be technologically feasible for mortars reinforcement based on cement and lime. The objective of this research was the comparative evaluation between a traditional mortar, based on cement and lime, with 1:1:6:0.8 ratio of cement: lime: sand: water, and a modified mortar with addition of 2… More >

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