CT 202 - Sieve Analysis Flashcards
For samples weighing more than 1,000g the balance should read to ________.
0.2% of the test sample mass
Sample with more than 15% passing the No.4 sieve shall be sufficient to yield at least ___________ of material passing the No.4 sieve.
1000g
Sieving shall continue until no more than _______% of the sample passes any one sieve during one additional minute of hand sieving.
0.5%
When sieving fine agg, the material retained on the No. 200 sieve should not exceed __________.
1 g/in^2
When performing sieve analysis on coarse agg, in no case shall the mass of material retained on each successive be accumulated.
False
When testing reclaimed agg that contain traces of asphalt, the oven drying temp should not exceed___________.
100 deg F
Fine agg shall be agitated in the mechanical washing vessel for ________.
2 min +- 5s
The exact amount of agg sampe required for sieve analysis testing varies according to ____________.
The nominal size of the agg
Hand sieving is never allowed when performing a sieve analysis test.
False
For granulated quicklime, the sample size tested for sieve analysis should weigh __________.
250g
For granulated quick lime, sieving should not be accomplished by the mechanical sieving method.
False
When could all material passing No. 4 sieve be used for fine agg sieve analysis testing?
When there is insufficient material to obtain the required 500 g.
When using a mechanical shaker for sieve analysi, how is the sieving time established?
The minimum mechanical shaking time is established by comparison with the hand-sieving method.
What last 3 steps do you need to perform to complete the grading analysis of the sample?
- Dry to constant mass
- Separate sample on sieves
- Determine and record cumulative mass retained on each sieve
