Quiz No.2 Constmat

_______________ with 35% or less of total sample passing #200 sieve. Its general subgrade rating is from excellent to good.

• Bad Materials

• Granular Materials

• Silt-Clay Materials

• Good Materials

AASHTO means ______________________

• Association of Americans State Highway and Transportation Office

• Association of Americans State Highway and Transportation Officials

• American Association of State Highway and Transportation Officials

• Association of Americans Social Highway and Transportation Officials

ASTM means _____________________

• American Society for Testing and Materials

• American State for Testing and Materials

• Association of Science for Testing and Materials

• American Society and Testing for Materials

LL = 30, PL = 20, what is PI?

• 20

• 10

• -10

• 50

Moisture content is the ratio of the mass of water in the soil to the mass of oven-dried soil after it has been dried to a constant mass at a temperature of _____________

• 105 plus or minus 10 degrees celsius.

• 110 plus or minus 10 degrees celsius.

• 110 plus or minus 5 degrees celsius.

• 105 plus or minus 5 degrees celsius.

Wet soil is 100grams, dry soil is 90grams, what is MC?

• 10.11%

• 13.11%

• 12.11%

• 11.11%

For Moisture Density Relation, the highest point on the curve indicates the ___________.

• Optimal Moisture Content (OMC)

• Maximum Dry Density (MDD)

• All of the above

• None of the above

AASHTO T99 - Moisture – Density Relation of Soils using ___________ and a ___________

• 2.5-kg (5.5-lb) Rammer and 305-mm (12in.) Drop

• 4.5-kg (10-lb) Rammer and a 457-mm (18in.) Drop

AASHTO T180 - Moisture – Density Relation of Soils using ________ and a __________

• 4.5-kg (10-lb) Rammer and 457-mm (18in.) Drop

• 2.5-kg (5.5-lb) Rammer and a 305-mm (12in.) Drop

Volume of the mold for AASHTO T180, Method C is _______ with ______ blows per layer.

• 0.000943 m3, 56 blows

• 0.000943 m3, 25 blows

• 0.002125 m3, 25 blows

• 0.002125 m3, 56 blows