This paper deals with the study of calcium sulfoaluminate (CSA) and geopolymeric (GEO) binders as alternatives to ordinary Portland cement (OPC) for the production of more environmentally-friendly construction materials. For this reason, three types of mortar with the same mechanical strength class (R3 ≥ 25 MPa, according to EN 1504-3) were tested and compared; they were based on CSA cement, an...

Nanocomposite composed of organoclay(Cloisite 20A-C20A) and Poly lactic acid (PLA) was prepared by solvent casting method. Physical, mechanical, thermal, barrier and microstructure properties of the composite were studied. X-Ray diffraction (XRD) patterns and scannin...

This study was aimed to the effect of adding transglutaminase (TGase) on mechanical and reservation properties edible films manufactured from soybean meal protein isolate (SPI) whey isolate(WPI). The results showed an improvement in with increase WPI ratios. Thickness SPI amounted 0.097 mm decreased 0.096 for WPI: at a ratio 2:1, when TGase added 0.075 mm. While tensile strength increased 7.64 ...

We developed a novel large-diameter graft "Triplex(®)" that uses a non-biodegradable material as a coating material. This time, in order to demonstrate the physical properties of Triplex(®) grafts, we conducted physical tests in accordance with the international guidelines, using the collagen coated vascular grafts (Hemashield, Boston Scientific, Natick, Massachusetts, USA) as the controls. The...

Cement substitution in self compacting concrete (SCC) is emphasized to conserve environment, reduce cost and utilize waste materials. This paper focuses on comparing the permeability and drying shrinkage of SCC containing Wollastonite micro fiber (WMF), a cheap pozzolanic fiber with respect to flyash. Microsilica was added for providing required viscosity to maintain homogeneity of the mixes. T...

failure of soft liners depends mostly on separation from the denture base resin; therefore measurement of the bond strength is very important. the purpose of this study was to compare the tensile bond strength of two soft liners (acropars, molloplast-b) to denture base resin before and after thermocycling.twenty specimens fromeach of the two different soft liners were processed according to the...

Chitosan films with olive leaf extract (OLE) incorporated at different concentrations were characterized regarding their antimicrobial, antioxidant and some relevant physical properties (i.e., solubility, water vapor permeability, tensile properties). Results indicate that the active have substantial antimicrobial activity against Listeria monocytogenes Campylobacter jejuni mostly extending mic...

Glycerol (G), polyglycerols (PGs), glycerol triacetate (GTA), and tributyrate (GTB) were studied as additives of poly(3-hydroxybutyrate) (PHB). The effect different concentrations (5–30%) these compounds on microstructure final properties PHB films evaluated. Microscopic studies revealed that samples with GTA GTB presented uniform microstructure, meanwhile those containing G PGs evidenced exuda...

Neutron diffraction analysis was employed to measure residual stresses near welds in used anhydrous ammonia nurse tanks. Tensile residual stresses contribute to stress corrosion cracking of nurse tanks, which can cause tanks to release toxic ammonia vapor. The analysis showed that tensile residual stresses were present in the tanks measured, and the magnitudes of these stresses approached the y...