نتایج جستجو برای: weathering resistance

تعداد نتایج: 381072  

Journal: :European Journal of Wood and Wood Products 2022

Abstract The weather resistance of Compreg surfaces depends on various factors, such as top veneer type, impregnating resin, and protective topcoats. Artificial weathering tests were performed for the first time material types with oak teak surfaces. Both showed strong surface brightening due to resin degradation subsequent photobleaching exposed surface. Directly pressed, phenolic resin-impreg...

2016
Rongbo Zheng Mandla A. Tshabalala Qingyu Li Hongyan Wang

To test the hypothesis that wood coated with rutile TiO2 nanostructures can undergo degradation because of the photocatalytic activity of TiO2, three sets of wood specimens were aged at an accelerated rate. These three sets consisted of blank wood (BW), HDTMOS/MTMOS-coated wood (WHM), and TiO2/HDTMOS/MTMOS-coated wood (WTHM). After exposure to 155-h UV irradiation, the wettability of WTHM chang...

Journal: :علوم و تکنولوژی پلیمر 0
سید مجتبی میرعابدینی مهرداد شریفی مینا حقایق شاهین شعبانی پیمان بختیاری

in this study, the effect of hydrocarbon and rosin ester resins combination on the physical and mechanical properties of thermoplastic road markings were evaluated. at first, two basic thermoplastic road marking formulations based on hydrocarbon and rosin ester resins were prepared. several samples of the blends of two basic formulations for thermoplastic road marking were characterized and com...

Journal: :Forests 2023

The sheathing-to-timber connection (STC) is a critical component of timber-framed shear walls. STC provides the wall system with its racking resistance, while anchors and tiedowns provide resistance to sliding overturning, respectively. Because building materials are exposed weathering during construction, this study aims quantify influence on structural performance STCs. To achieve aim, total ...

Journal: :Science 2013

Journal: :Sustainability 2021

White building components, whether decorative or the overall structure, are susceptible to extreme weathering conditions, which affect durability of building’s external surface. In particular, white natural stone materials can provide buildings with beauty, durability, and sustainability, but this beauty is affected by key factors determining their weather resistance, namely physical properties...

ژورنال: Journal of Railway Research 2018
Fathali, Masoud, Esmaeili, Morteza , Moghadas Nejad, Fereidoon ,

The influence of main quality tests on the overall quality of railway ballast materials is assessed in this study. The need to integrate all acceptance tests in a unified manner for precise evaluation of ballast quality is identified, and a technique of performing this is proposed. Using this approach, a new ballast quality index (BQI) is defined in which, the main acceptance tests including ab...

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