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  • Open Access


    Deep Learning-Based Swot Analysis in Construction and Demolition Waste Management

    R. Rema*, N. Nalanth

    Intelligent Automation & Soft Computing, Vol.36, No.2, pp. 1497-1506, 2023, DOI:10.32604/iasc.2023.032540

    Abstract Researchers worldwide have employed a varied array of sources to calculate the successful management of Construction and Demolition (C&DW). Limited research has been undertaken in the domain of Construction and Demolition Waste Management (C&DWM) and consequently leaving a large gap in the availability of effective management techniques. Due to the limited time available for building removal and materials collection, preparing for building materials reuse at the end of life is frequently a challenging task. In this research work Convolutional Neural Network-Long Short-Term Memory (CNN-LSTM) is proposed to predict the number of waste materials that are obtained from a building at… More >

  • Open Access


    Preparation and Characterization of Sandwich Structured Materials with Interesting Insulation and Fire Resistance

    Haizhu Wu1,#, Jinxing Li1,#, Shouhu Bao1, Fuxian Yang1, Jun Zhang1, Hisham Essawy2,*, Guanben Du1, Xiaojian Zhou1,*

    Journal of Renewable Materials, Vol.10, No.8, pp. 2029-2039, 2022, DOI:10.32604/jrm.2022.019834

    Abstract A cellular material in the form of 3-layered sandwich structure material was prepared via sole use of mechanical stirring without any use of a foaming agent, while Tween-80 was employed as a foam stabilizer via a developed in-situ mold casting. The resulting structure displayed a good appearance with no visual defects. The 3-layered composition of the sandwish structure, “nonporous resin layer-porous foam layer-nonporous resin layer”, was examined in terms of the microstructure, density & density distribution, pulverization ratio, mechanical strength, insulation and flame retardant performance. It was indicated from the results that the bonding between the resin layer and foam… More > Graphic Abstract

    Preparation and Characterization of Sandwich Structured Materials with Interesting Insulation and Fire Resistance

  • Open Access


    Enhanced Thermal Performance of Roofing Materials by Integrating Phase Change Materials to Reduce Energy Consumption in Buildings

    Chanita Mano, Atthakorn Thongtha*

    Journal of Renewable Materials, Vol.9, No.3, pp. 495-506, 2021, DOI:10.32604/jrm.2021.013201

    Abstract This work focused on characterizing and improving the thermal behavior of metal sheet roofing. To decrease the heat transfer from the roof into a building, we investigated the efficiency of four types of phase change materials, with different melting points: PCM І, PCM II, PCM III and PCM IV, when used in conjunction with a sheet metal roof. The exterior metal roofing surface temperature was held constant at 50°C, 60°C, 70°C and 80°C, using a thermal source (halogen lights) for 360 min to investigate and compare the thermal performance of the metal sheet roofing with and without phase change materials… More >

  • Open Access


    Novel Mycelium-Based Biocomposites (MBB) as Building Materials

    Zinta Zimele1,*, Ilze Irbe2, Juris Grinins2, Oskars Bikovens2, Anrijs Verovkins2, Diana Bajare1

    Journal of Renewable Materials, Vol.8, No.9, pp. 1067-1076, 2020, DOI:10.32604/jrm.2020.09646

    Abstract Novel mycelium-based biocomposites (MBB) were obtained from local agricultural (hemp shives) and forestry (wood chips) by-products which were bounded together with natural growth of fungal mycelium. As a result, hemp mycocomposites (HMC) and wood mycocomposites (WMC) were manufactured. Mechanical, water absorption and biodegradation properties of MBB were investigated. MBB were characterized also by ash content and elemental composition. The results of MBB were compared with the reference materials such as the commercial MBB material manufactured by Ecovative® Design (EV), hemp magnesium oxychloride concrete (HC) and cemented wood wool panel (CW), manufactured by CEWOOD®. The mechanical properties of HMC and WMC… More >

  • Open Access


    Characterization of Manmade and Recycled Cellulosic Fibers for Their Application in Building Materials

    Nadezda Stevulova1,*, Viola Hospodarova1, Adriana Estokova1, Eva Singovszka1, Marian Holub1, Stefan Demcak1, Jaroslav Briancin2, Anton Geffert3, Frantisek Kacik3, Vojtech Vaclavik4, Tomas Dvorsky4

    Journal of Renewable Materials, Vol.7, No.11, pp. 1121-1145, 2019, DOI:10.32604/jrm.2019.07556

    Abstract The aim of this study was to characterize two types of cellulosic fibers obtained from bleached wood pulp and unbleached recycled waste paper with different cellulose content (from 47.4 percent up to 82 percent), to compare and to analyze the potential use of the recycled fibers for building application, such as plastering mortar. Changes in the chemical composition, cellulose crystallinity and degree of polymerization of the fibers were found. The recycled fibers of lower quality showed heterogeneity in the fiber sizes (width and length), and they had greater surface roughness in comparison to high purity wood pulp samples. The high… More >

  • Open Access


    Modeling Water Adsorption and Retention of Building Materials From Pore Size Distribution

    Abdelkrim Trabelsi1,*, Zakaria Slimani1, Akli Younsi2, Joseph Virgone1, Rafik Belarbi2

    Journal of Renewable Materials, Vol.7, No.6, pp. 547-556, 2019, DOI:10.32604/jrm.2019.04426

    Abstract Water adsorption and capillarity are key phenomena involved during heat and moisture transfer in porous building materials. They account for interaction between solid matrix, liquid water and moist air. They are considered through Water Vapor Adsorption Isotherm (WVAI) and Retention Curve (RC) functions which are constitutive laws characterizing water activity within a porous medium. The objective of this paper is to present a water vapor adsorption and retention models built from multimodal Pore Size Distribution Function (PSDF) and to see how its parameters modify moisture storage for hygroscopic and near saturation ranges. The microstructure of the porous medium is represented… More >

  • Open Access


    Study of the Aeraulic Flows in a Building Including Heating and Air Conditioning Systems

    N. Laaroussi1*, Y. Chihab1, M. Garoum1, L-V. Bénet2, F. Lacroux3

    FDMP-Fluid Dynamics & Materials Processing, Vol.11, No.4, pp. 354-365, 2015, DOI:10.3970/fdmp.2015.011.354

    Abstract This study is based on the modeling of the air flow in the hall building including heating and air-conditioning systems. The building contains two converter stations “valves” considered as heat sources. Heat transfer in the hall is numerically simulated using the standard k-ε model of turbulence. For a very hot weather, this study aims to evaluate the local temperatures in the ambient air of the hall, with assuming running valves and air conditioning device in open loop with a 35°C inlet temperature. The study has shown that the air conditioning is efficient enough to maintain low level of temperature disparity.… More >

  • Open Access


    A Novel Framework for Building Materials Knowledge Systems

    Surya R. Kalidindi1,2,3, Stephen R. Niezgoda1, Giacomo L,i1,1, Tony Fast1

    CMC-Computers, Materials & Continua, Vol.17, No.2, pp. 103-126, 2010, DOI:10.3970/cmc.2010.017.103

    Abstract This paper presents a novel mathematical framework for building a comprehensive materials knowledge system (MKS) to extract, store and recall hierarchical structure-property-processing linkages for a broad range of material systems. This new framework relies heavily on the use of computationally efficient FFT (Fast Fourier Transforms)-based algorithms for data-mining local structure-response-structure evolution linkages from large numerical datasets produced by established modelling strategies for microscale phenomena. Another salient feature of this new framework is that it facilitates flow of high fidelity information in both directions between the constituent length scales, and thereby offers a new strategy for concurrent multi-scale modelling of materials… More >

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