Results 51 to 60 of about 5,068,900 (201)
Surface weathering of rapakivi granite outcrops – implications for natural stone exploration and quality evaluation [PDF]
Estonian Journal of Earth Sciences, 2008 Implications of surface weathering of rapakivi granite outcrops for natural stone evaluation were studied in the Wiborg rapakivi granite batholith in southeastern Finland.
Härmä, Paavo, Selonen, Olavi
doaj
Wood Surface Changes of Heat-Treated Cunninghamia lanceolate Following Natural Weathering
Forests, 2019 To quickly clarify the effect of heat treatment on weatherability of Cunninghamia lanceolate (Lamb.) Hook., we investigated the surface degradation under natural exposure. A comparison between heat-treated and untreated samples was taken based on surface
Xin-yue Cui, J. Matsumura
semanticscholar +1 more source
The effect of natural weathering on untreated wood surface
Maderas: Ciencia y Tecnología, 2017 As a result of contemporary ecological and sustainable movements, a number of constructions from wood, as the only renewable building material, is still increasing. In accordance with these trends, wood elements are often left untreated.
Eliška Oberhofnerová +2 more
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Photodegradation profiles of PVC compound and wood/PVC composites under UV weathering
eXPRESS Polymer Letters, 2013 This work aimed to study the effect of different ultraviolet (UV) weathering conditions (natural and accelerated) on the photodegradation of polyvinyl chloride (PVC) and wood/polyvinyl chloride (WPVC) composites by considering the structural and physical
N. Sombatsompop +2 more
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BioResources, 2015 This study examined the color stability of painted Norway spruce (Picea abies) samples subjected to natural and accelerated weathering, using Duncan’s tests and correlation analyses. The following effects were studied: (1) the different initial roughness
Ladislav Reinprecht, Miloš Pánek
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Case Studies in Construction Materials, 2018 Wood-polymer composites (WPC) increasingly gain in popularity in the building industry. To date there is less long-term experience from facade applications which reliably confirm that relevant material properties are sufficient throughout their expected ...
D. Friedrich
semanticscholar +1 more source
Mechanical performance of wood under artificial and natural weathering treatments
BioResources, 2019 Natural and artificial weathering treatments were studied to determine the change of wood properties as a function of exposure time. This paper aimed to provide general information about the mechanical performance of wood under natural and artificial ...
Tiago Hendrigo de Almeida +6 more
semanticscholar +1 more source
International Journal of Polymer Science, 2014 Natural and accelerated weatherings were studied to inspect the effect of antioxidants to protect low-density polyethylene (LDPE) films for commercial application as greenhouse covering materials in Saudi Arabia.
Othman Al Othman +2 more
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Discolouration of heat-treated fast-growing eucalyptus wood exposed to natural weathering
Cellulose Chemistry and Technology, 2019 To heat-treat is one of the main alternatives to improve wood performance in outdoor uses. This study aimed to evaluate the discolouration of a heat-treated fast-growing eucalyptus wood exposed to natural weathering tests.
R. Delucis, R. Beltrame, D. Gatto
semanticscholar +1 more source
Differential etching after lithic heat treatment: First results of an experimental study
Journal of Lithic Studies, 2018 The practice of lithic heat treatment creates a combination of initial dull flake scars and subsequent smooth flake scars when the implement is finished after heating.
Linda Kiers
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