Wave propagation is used as an advanced tool of determining elastic properties of rocks. In spite of being cheap and non destructive tests of rock mechanics, due to its modernity method is not yet replacing the traditional dear and destructive tests. In order to pave ways of replacing this test and making best use of it all effective factors of such method are to be assessed. One fundamental fa...

The effects of recycled-branched polypropylenes on their rheological properties and foamability are studied and compared with the virgin sample in this paper. The main idea is to explore the possibility of using recycled materials to make the acceptable foam products. The recycled polypropylenes showed the lower melt strength due to the disentanglement. However, the viscosity at a high shear ra...

New epoxidized soybean oil (ESO)/clay nanocomposites have been prepared with triethylenetetramine (TETA) as a curing agent. The dispersion of the clay layers is investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). XRD and TEM data reveal the intercalated structure of ESO/clay nanocomposites has been developed. The thermogravimetric analysis exhibits that the ESO/c...

after harvesting, pistachio nuts are generally kept in storage before being exported. during handling, thenuts are exposed to external forces that cause mechanical damage to them. the increase of the mechanicaldamage is a function of storage conditions, especially temperature. this research investigated the effect ofstorage temperature (25, 5, -5, -15°c), on the mechanical properties of pistach...

in this research, the effects of three variables, whey protein concentrate, wpc (0.7- 2.8%), sodium ceinate, sc (0.7-208%) as a substitute for egg and carboxymethyl cellulose, cmc (0.66-0.234 % w/w) as thickening agent on sensory (taste and texture) and rheological (complex viscosity, η* , storage modulus, g´ and loss modulus, g˝ ) properties of salad dressing were investigated. the central com...

this study was conducted in order to evaluate the effects of long term ageing on toughness andresilient modulus of asphalt concrete mixtures containing electric arc and basic oxygen furnacesteel slags. after initial evaluation of the properties of steel slags using x-ray diffraction andscanning electric microscope, eleven sets of laboratory mixtures were prepared. each set wastreated replacing ...

Oscillatory measurements of a columnar structure were performed, which was formed in an immiscible polymer blend subjected to an electric field. The formation process was observed through a confocal scanning laser microscope and the structure for the measurements was confirmed to be well defined. The storage shear modulus at low frequencies increased with increasing the electric field. A linear...

Abstract Rheology is critical issue in the workability, stabilization and engineering performance of asphalt emulsions. The objective this study to investigate rheological properties To achieve goal, a preshear protocol was introduced four kinds emulsions were tested base on preshear. Firstly, necessarity analyzed suitable range rate time studied given. Then, after Finally, palierne model modif...