MATERIALS FINER THAN 75 MICRONS - Determination of the minus 75 micron material is used to compare material performance with gradation specifications, as well as to indirectly gauge properties like plasticity (moisture level relative to solid/liquid state), and permeability. Source (AASHTO T 11)
sieves until liquid is clear. Add retained amounts,
dry, and weigh. Then subtract weight from original
dry weight.
COARSE AND FINE AGGREGATE SIEVE ANALYSIS (AASHTO T 27)
This high capacity laboratory balance is available in 12,16,20, and 32 kg capacities. Includes bottom mount for hanging bulk samples.
Great for Aggregates
AASHTO M 231 Compliant
This ENDECOTTS EFL 2000 Vibratory sieve shaker is used by many DOTS because of it's ability to handle 8" as well as 12" sieves, without a seperate attachment. It will handle up to 3 kg , 3/4" rock, as well as fines. It is also designed for quiet operation, eliminating the need for a seperate sound enclosure.
Commonly used sieve shakers based on the original Maryanne and RoTap Sieve Shakers. Attachments are available for 8" or 12" sieves.
Often larger aggregates are sifted by hand, down to 1" or 3/4" particles, which can be sifted more effectively by a laboratory sieve shaker, along with fines. A series of twelve inch sieves are generally used to seperate materials between 1" and the amount retained on a #10 (2.0 mm) sieve. *AASHTO M92.
Aggregate fines, defined as those that pass through the #10 sieve, are generally run on 8" sieves.
ENDECOTTS DURA-SIEVES
DESIGNED SPECIFICALLY FOR AGGREGATE SIEVING
Endecotts heavy duty stainless steel sieves with reinforced rims ASTM E 11 COMPLIANT SIEVE
The Gilson Testing Screen and Test-Master models are ideal for coarse particle size determinations of crushed stone, sand and gravel.Samples are quickly processed into as many as seven separations in as little as three to five minutes. The TS-1 is designed primarily for larger samples of coarse aggregates, and occassional sieving of materials down to 75 microns, with a special attachment.
SONIC RINGS ARE AVAILABLE TO FACILITATE EFFECTIVE WET SIEVING
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