Test #2 : Sand Equivalent test in accordance with AASHTO T 176

Sand Equivalent in accordance with AASHTO  T 176

This test method is intended to serve as a rapid field correlation test to indicate  clay or plastic fines and dusts in granular soils and aggregates that pass No. 4 (4.75mm) sieve

Test #1 Gradation Of ( Coarse Aggregate , Fine Aggregate , Crushed Sand & Natural Sand)

Gradation Of ( Coarse Aggregate ,  Fine Aggregate , Crushed Sand & Natural Sand) (AASHTO T 27 -93    ASTM  C 136)
This test method covers the determination of the particle size distribution of fine aggregates and coarse aggregates by sieving . ( graphs included ) 

( third line correction : that means we must* )