Effective specific gravity

Effective specific gravity The true specific gravity of an extract gas stream, as opposed to the specific gravity of the air alone. 

As explained in the Introduction, conventional countercurrent extractors are frequently ineffectual because of the small difference in specific gravity which exists in most two-liquid systems. The centrifugal extractors overcome this problem by increasing the effective specific gravity difference with the help of centrifugal force. There have been many designs proposed, but only those which have had important commercial acceptance will be mentioned here. 

Provided that the bulk specific gravity (Gji,) and the effective specific gravity (G ) of the total aggregate, as well as the specific gravity of the bitumen (GJ, are known, the volumetric properties of bituminous mixture (asphalt mixture) may be determined. 

Vse = volume of mineral aggregate (by effective specific gravity)... 

The effective specific gravity of the total aggregate G is calculated by using the following equation ... 

The effective specific gravity of the total aggregate should have a value between the apparent specific gravity (G f) and the bulk specific gravity of the total aggregate G t,) (i.e. G < Gse < Gsb). If not, the test determining the maximum specific gravity of loose bituminous mixture is repeated. 

Effective Specific Gravity (g/cm3) 0.8 Percent Free Moisture <0.5%... 

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