Sensory prediction using rheology and tribology.Interfacial & Surface Tension Testing Services.Powder Rheology and Powder Flow Testing Services.High Temperature Rheology Characterisation Service.Coefficient of Friction Testing Service.Rheology Lab Equipment and Capabilities.Rheology & Viscosity Clients by Industries.Making Rheology Easy, Accessible and Economical.Time is recorded for flow upto a mark of 100ml. Stop watch is started when cylinder records 50 ml.
Valve is opened after applying kerosene in the receiver. When temperature reaches 40☌, it is poured into cup of the tar viscometer until levelling peg on valve rod is just immersed. During this material is continuously stirred. Material is heated to 20☌ above the test temperature and material is allowed to cool. The tar cup is properly levelled and water in the bath is heated to the test temperature. Low fluidity or high viscosity does not enable the bitumen to coat the entire surface of aggregate in the mix easily and also resists the compactive effort and resulting mix is heterogeneous in character. At high fluidity or low viscosity, bitumen binder simply lubricates the aggregate particles instead of providing an uniform film thickness for binding action. The degree of fluidity at the application temperature greatly influences the ability of bituminous material to spread, penetrate into voids and also coat the aggregate and hence affect the strength and characteristics of resulting paving mixes. Tar viscometer, cup, valve, receiver, thermometer etc.
To determine the viscosity of bitumen using tar viscometer
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