Quiz_________________?
0.44 -
Answer✅
What is the water-cementitious ration (w/cm) of a concrete mix that contains 550 lbs/yd3
of cement, 120 lbs/yd3 of fly ash and 35 gal/yd3 of water?
Quiz_________________?
0.5% of maximum load normally handled -
Answer✅
To what accuracy should the scales for weighing cement , pozzolan, slag and aggregates at
the plant be maintained
Quiz_________________?
1 per design mix in use from the first day of production and every 30 calendar days or less
thereafter. -
Answer✅
The minimum normal sampling frequency for the chloride content of structural concrete is:
1
, Quiz_________________?
1,069 lbs/yd3 -
Answer✅
A design mix indicates that the amount of coarse aggregate to be used is 1,056 lbs/yd3 using
pit #87-020 with a specific gravity of 2.46 and the specific gravity changes to 2.49. How
much coarse aggregate should be used to maintain the same volume?
Quiz_________________?
1. Truck Drum Condition
2. Water Gauge
3. Manufacturer's Rating Plate
4. Mixer Blade Wear
5. Revolution Counter. -
Answer✅
Plant personnel must check the mixer for which of the 5 items?
Quiz_________________?
1.00 thru 6.00% -
Answer✅
What is the air content range for all classes of structural concrete except Class IV Shaft?
Quiz_________________?
100 degrees F -
Answer✅
What is the maximum concrete temperature allowed when using a hot weather design mix?
2