In order to improve the stability and high temperature behavior of rubber asphalt, deep desulfurization stabilized powder SBS are used prepare composite modified asphalt (Hereinafter: asphalt). this paper, gel chromatography permeation test, Fourier transform infrared spectroscopy test dynamic shear rheology were carried out. Comparative tests conducted on base ordinary asphalt. The change mech...

the effect of impact modifier on creep behavior of wood flour- recycled polypropylene composites has been evaluated in this work. for this purpose, impact modifier (ethylene vinyl acetate) and recycled polypropylene were mixed with wood flour (50/50% w/w) as well as the impact modifier (0, 3%, 6% and 9%) by a counter-rotating twin-screw extruder to manufacture the wood flour- recycled polypropy...

Abstract Cellulose nanofibrils, CNFs, show great potential in many application areas. One main aspect limiting the industrial use is slow and energy demanding dewatering of CNF suspensions. Here we investigate with a piston press process. Three different grades were dewatered to solid contents between approx. 20 30%. The varied charge density (30, 106 604 µmol/g) fibrillation degree. chemical c...

Drilling fluid plays the same role in oil and gas well drilling as blood human body. A new type of oil-in-water (o/w) emulsion has been developed using diesel dispersed phase, brine water continuous xanthan gum viscosity modifier clay stabilizer filtration controlling agent. Initially, standard recommended techniques were opted to detect rheological properties emulsions. The fluids have also sh...

Designing an effective drilling mud is a critical aspect of the process. A well-designed should not only provide efficient hydraulics but also fulfill three important functions: enhancing rheology, inhibiting hydrate formation in deepwater drilling, and suppressing shale swelling when through formations. Achieving these functions often requires use various additives, additives are expensive, no...

researchers write. So, during the dry season, the entire population is represented by developing eggs that incubate for 8–9 months, before hatching synchronously at the beginning of the following rainy season. “Remarkably, this chameleon spends more of its short annual life cycle inside the egg than outside it,” they report. The authors reviewed data on the life cycle of more than 1,700 tetrapo...

Interfacial rheological properties have yet to be thoroughly explored. Only recently, methods have been introduced that provide sufficient sensitivity to reliably determine viscoelastic interfacial properties. In general, interfacial rheology describes the relationship between the deformation of an interface and the stresses exerted on it. Due to the variety in deformations of the interfacial l...

The μ(I)-rheology is a nonlinear viscous law, with a strain-rate invariant and pressure-dependent viscosity, that has proved to be effective at modelling dry granular flows in the intermediate range of the inertial number, I. This paper shows how to incorporate the rheology into depth-averaged granular avalanche models. To leading order, the rheology generates an effective basal friction, which...