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Dec 16, 2020Open AccessArticle
In this studio and laboratory research study, the suitability of several glazes for use on the earthenware clays used by local potters in the internal provinces of Oman was investigated. The aim was to develop suitable, economic glazes from local materials for use with Omani earthenware clays that could form an adequate adhesive bond with the clay surface and be used in ceramics decoration in local educational institutions. In particular, the experiments in this study mainly evaluated the use of...
May 20, 2020Open AccessArticle
In this paper, we have discussed the coloration mechanism based on visible absorption spectra testing by selecting three typical samples of Luodian jade with white, pallor and cyan. The attribution analysis of absorption spectra showed that absorption of Luodian jade in visible light mainly includes charge transfer spectrum of Fe2 → Ti4 (at 490 nm - 500 nm) and Fe2 → Fe3 (at 523 nm - 536 nm, 646 nm - 657 nm), electron transition 6A1 → 4T2 (4G) of Fe3 (at 615 nm - 632 nm, 685 nm - 694 nm) an...
Apr 29, 2020Open AccessArticle
Mg2 and bovine serum albumin (BSA) Langmuir monolayers were used as effective crystal nucleation and growth modifiers and template to control the crystallization of CaCO3. The polymorph and morphology of crystals were characterized using scanning electron microscopy (SEM), and X-ray diffraction (XRD). The results demonstrated that various morphologies such as abacus-bead-like particles, spherical-shaped particles, wood block-like particle ...
Apr 23, 2020Open AccessArticle
This paper deals with the utilisation of glass coming from municipal waste mainly for the production of inorganic polymeric materials, with advanced mechanical properties, intended for the construction industry. The development of glass-based geopolymers, achieving high compressive strength and low water absorption, is described, and the produced materials are compared with some common construction and building materials.
Feb 17, 2020Open AccessArticle
In the recent, filler-polymer composites researches have been on the rise due to its implication to electromagnetic interference (EMI) applications. The composition, morphology and surface rheology of the filler-polymer composites play an immense role in determining the electrical, mechanical, and optical properties. In this paper, the preparation and characterization of micro-composites of wood (biodegradable waste material)/polycaprolactone (PCL) composites a ...
Dec 25, 2019Open AccessArticle
Changes in the mechanical properties of Acrylonitrile-Butadiene Rubber (NBR)/Poly (vinyl chloride) resin binary blend were investigated. Poly (vinyl chloride) resin additives were within range (0 - 70) wt.%, and the measured mechanical properties included tensile strength, elongation, and compression strength. The obtained results showed that the tensile and elongation value of NBR starts to decrease with the addition of PVC resin ...
Jul 13, 2018Open AccessArticle
Directive 2004/54/EC [1] on minimum safety requirements for tunnels in the trans-European road network sets the bases for establishing an acceptable safety level for tunnel users across EU member states. Furthermore, many EU member states enforce stricter safety requirements for tunnels in their territory. The lack of a methodology for determining design and operating requirements for tunnels leads many times to an expensive over- ...
Jan 31, 2018Open AccessArticle
In this research, polyethylene terephthalate bottles
(PET) waste was added
to styrene-butadiene rubber (SBR) to manufacture road bumps, as a technological
procedure for recycling this PET waste, in order to maintain a clean and sustainable
environment. Polyethylene terephthalate bottles were cut as grooved strips and
added to bump SBR batch with various percentages (0 - 100
pphr). Mechanical tests were perf ...
Nov 13, 2017Open AccessArticle
This paper presents a
characterization analysis of alkali-activated steel slag. The effect ratio of
steel slag and ferronickel slag which are the precursor materials on the
compressive strength of the alkali-activated materials was investigated. The
combination of sodium hydroxide solution of 15 moles concentration and sodium
silicate was used as an alkaline activator. The ratio between steel slag and
alkaline liquid was fixed at ...
Sep 28, 2017Open AccessArticle
Au/SiO2 nanocomposite films, studied in this work, were
prepared by RF-magnetron sputtering technique on glass substrate at room
temperature under two different substrate temperatures (Ts), and subsequent
heat treatment. For the deposited sample at TS = 25℃, no apparent
surface plasmon resonance peak could be observed. After annealing ...
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