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  • Open Access


    Experimental Investigation on the Strength and Ductility Performance of SteelTimber-Steel Joints with Screw and Steel-Tube Fasteners

    Huifeng Yang, Mingwang Wu, Rixin Gu, Hang Cao, Kai Xiao, Benkai Shi*

    Journal of Renewable Materials, Vol.11, No.12, pp. 4175-4195, 2023, DOI:10.32604/jrm.2023.028507

    Abstract This article presents experimental results of steel-timber-steel (STS) joints loaded parallel to grain. Eight groups of specimens were designed, and tensile tests were performed. The fastener types and fastener numbers were considered to evaluate the tensile strengths and ductility performances of the STS joints. The screws with 6 mm diameter and the innovative steel-tubes with 18 mm diameter were adopted as connecting fasteners. The experimental results were discussed in terms of yielding and ultimate strengths, slip stiffness, and ductility factors. The ductility classification and failure mechanisms of each group of specimens were analyzed. It was demonstrated that the STS joint… More >

  • Open Access


    Pull-out Behaviour of Axially Loaded Screwed-in Threaded Rods Embedded in CLT Elements: Experimental Study

    Huifeng Yang1,*, Junfeng Ji1, Haotian Tao2, Benkai Shi1, Junbin Hu1, Bo Wen3

    Journal of Renewable Materials, Vol.10, No.1, pp. 105-117, 2022, DOI:10.32604/jrm.2021.016118

    Abstract Experimental investigation on the pull-out behaviour, including the withdrawal capacity, slip stiffness and interfacial shear stress, of axially loaded screwed-in threaded rod embedded in cross laminated timber (CLT) was conducted. Specimens with varying embedment length and different number of threaded rods were tested in this study. To prevent premature splitting failure of timber, some specimens were reinforced in the direction perpendicular to the timber grain with self-tapping screws. Test results showed that the screwed-in threaded rod connections exhibited good pull-out behaviour with high withdrawal capacity and slip stiffness. Within a certain range, the withdrawal capacity increases considerably with the increase… More > Graphic Abstract

    Pull-out Behaviour of Axially Loaded Screwed-in Threaded Rods Embedded in CLT Elements: Experimental Study

  • Open Access


    Test and Analysis of the Sound Insulation Performance of Four Types of Timber Structure Floors under Jumping Excitation

    Yujie Huang1, Hao Zhu2, Dauletbek Assima4, Zheng Wang1,*, Minmin Li3, Xinyue Zhao1

    Journal of Renewable Materials, Vol.9, No.4, pp. 829-840, 2021, DOI:10.32604/jrm.2021.014610

    Abstract To improve the impact sound insulation performance of building floors and meet the objective requirements for living comfort of residents, in this article, three kinds of elastic cushion materials, Portuguese cork board, BGL insulation sound insulation foam board, and EPP polypropylene plastic foam board, are applied to the sound insulation of a light frame wood floor structure of the same bedroom and compared to the ordinary floor. This study uses the transfer function method and transient excitation method to measure the sound insulation, damping ratio, and elastic modulus of materials, as well as the sound insulation of the floor under… More >

  • Open Access


    Mechanical Characterisation of Densified Hardwood with Regard to Structural Applications

    Katharina Müller1,*, Walter Sonderegger2, Oliver Kläusler2, Michael Klippel1, Edwin Zea Escamilla3,4

    Journal of Renewable Materials, Vol.8, No.9, pp. 1091-1109, 2020, DOI:10.32604/jrm.2020.09483

    Abstract The demand for high-performance, yet eco-friendly materials is increasing on all scales from small applications in the car industry, instrument or furniture manufacturing to greater dimensions like floorings, balcony furnishings and even construction. Wood offers a good choice on all of these scales and can be modified and improved in many different ways. In this study, two common European hardwood species, Beech (Fagus sylvatica L.) and Ash (Fraxinus excelsior L.) were densified in radial direction by thermo-mechanical treatment and the densified product was investigated in an extensive characterisation series to determine all relevant mechanical properties. Compression in the three main… More >

  • Open Access


    Application of Modern Wood Product Glulam in Timber Frame With Tenon-Mortise Joints and Its Structural Behavior

    Guofang Wu, Yong Zhong, Yingchun Gong, Haiqing Ren*

    Journal of Renewable Materials, Vol.7, No.5, pp. 451-461, 2019, DOI:10.32604/jrm.2019.06229

    Abstract Tenon-mortise joint is widely used in traditional timber structures around the world. This paper summarizes the results of an experimental study of the structural behavior of tenon-mortise joints made with glulam and CNC technology instead of traditional material and manual work. 30 full-scale tenon-mortise joints were manufactured and tested under monotonic loading, and the effects of dimension, shape, processing error and adhesive were evaluated. It was found that the round rectangular shaped tenon-mortise joints were comparable with traditional joints in terms of structural performance, but were time and labor saving. The variability of the proposed tenon-mortise joints was lower, which… More >

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