experiments

Experiments
Silt test
Aim: The silt test is use to lay out the quantity of silt present in a type of sand. Silt is loose sedimentary material consisting of fine particles surrounded by 0.002mm and 0.05mm in diameter. The presence of silt in sand used for the manufacture of concrete will reduce the strength of the rigid concrete
Equipment
Sample of sand
Saline resolving power
Graduated cylinder
Calculator
Method
1.Place 50ml of saline solution into a graduated cylinder.
2.Add sand gradually until the 100ml coiffure is r severallyed.
3.Add more saline solution until the 150ml mark is reached.
4. shift the cylinder vigorously.
5.Allow to settle for 3 hours.
6.Measure the elevation of the sand and silt.
7.Calculate the amount of silt as a percentage of the amount of sand.
Formula
Height of silt class X 100
Height of sand layer 1











discipline test
Aim: The flag test is carried out to determine the consistence workability of a gratifying batch of concrete and the consistency of various batches.
Equipment
Sampling scoop
Cloth
castigate terminal
Buckets
Small shovel
Mixing tray
Steel rule
Rigid coat plate
Slump chamfer
Method
1.Select three buckets of concrete from different. parts of a freshly prepared batch of concrete.
2.



Empty buckets into the mixing tray.
3.Mix in concert thoroughly.
4.Ensure the slump cone is clean and damp.
5.Place the metal plate on a level surface.
6.Place the cone on the metal plate and stand on the tail pieces
7.Fill the cone in three equal-depth layers
Rod each layer 25 times after adding it.
Spread the blows equally over the area
Make sure the rod just penetrates the layer below.
8. Level forth the top of the cone using the rod in a rolling and sawing motion.
9. Care all-embracingy clean off spillage from sides and base plate.
10. Carefully lift the cone rightful(a) up and clear,to a count of between 5 and 10 seconds.
11. Place the cone beside...If you want to get a full essay, order it on our website: Orderessay



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