Guaranteed Pass Solutions.
Between what percentages must you sample a concrete truck? - Answer 10% and 90%
What is grab sampling? - Answer Securing at one point of the discharge as fast as possible.
Tamping rod size for 100 x 200mm cylinders - Answer 10 +/- 1mm in diameter, between 450
mm and 600 mm
Minimum sample required for 150 x 300mm cylinder? - Answer 30L
How long do you have to obtain, transport and remix sample? - Answer 10 mins
Vibration Frequency of internal vibrator - Answer 120Hz
Size of internal vibrator. - Answer 20 to40mm in diameter, minimum 50mm in length.
weight of mallet. - Answer 0.6 +- 0.3kg
strike off bar size - Answer 6mm x 25mm x 450mm
Temp of water storage tanks - Answer 23 +/- 2
Water in a storage tank must be saturated with what? - Answer calcium hydroxide
minimum moist room humidity - Answer 95%
Range of thermometer - Answer 0 to 50 degrees
How often should a temperature recorder take a reading? - Answer 15min