An investigation was made of the factors that determine the impeller torque of vertical axis high speed mixers containing granular solids of low cohesion, the experimental material being sand.
Sintering is the process of sticking and cohesion of initially granular particles as a function of heating rate, temperature, composition and grainsize.
It is demonstrated that, once the growing crystals have impinged, the rheology can be interpreted within the framework of saturated compacted granular materials with little intercrystal cohesion.
The findings provide insights on establishing closures for the kinetic theory-based continuum models coupled with population balance to predict the behavior of cohesive particles in granular and multiphase flows, which is of particular interest to engineers handling fine/wet powders where interparticle cohesion is not negligible.
When designed and applied properly, foamed asphalt provides a way of obtaining good coating on granular materials made from ash and hence adequate cohesion of pavement materials.
To test the rescue of hyperpiliated EPS− mutants by different complex carbohydrates, about 5×108 EPS− SW504 cells were mixed with purified EPS (1 mg/ml carbohydrate), insoluble chitosan (1 mg/ml, 100-300K), methylcellulose (1 mg/ml, Fisher) or granular agar (1 mg/ml, Fisher) prior to incubation in cohesion buffer at 32°C for 30 min [23].
The increase in shear strength of the granular soil stabilized with fibers was mostly from the apparent cohesion, and the contribution from the increase in normal confining stress was quite limited.
Soluble salts of marine origin are one of the main agents in the weathering of granitic rocks used in buildings and monuments; they cause a loss of cohesion between the mineral grains, which results in granular disintegration.
This is a fundamental key to model the behaviour of materials which become cohesive during hardening (so that the shape of the yield surface evolves from that typical of a granular material to that typical of a dense material), or which decrease cohesion due to damage accumulation.
