Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 1 (Q.No. 20)
20.
While compacting the concrete by a mechanical vibrator, the slump should not exceed
Discussion:
24 comments Page 1 of 3.
NILLA RAVITEJA said:
1 decade ago
Work ability can be carried after proper mixing then 1st fill the cylinder with out tamping weight it and again fill the cylinder with concrete and properly vibrate or tamping then weight it.
Compaction Factor = (wt of concrete wt out compact/wt of concrete with fully compacted)*100.
Compaction Factor = (wt of concrete wt out compact/wt of concrete with fully compacted)*100.
Parveen kaushik said:
1 decade ago
Segregation means concrete cement slurry & fine aggregates &coarse aggregate collapsed & have no slump & after hardening no strength but workability is the checking the concrete how much time used after mixing.
SHUBHAM SIDDHARTH NAYAK said:
5 years ago
Low workability- (25mm-50mm) slump- light reinforcement requires mechanically operated vibrator.
Medium workability- (50mm-100mm) slump- standard reinforcement requires hand-operated vibrator.
Medium workability- (50mm-100mm) slump- standard reinforcement requires hand-operated vibrator.
(2)
Apurva said:
7 years ago
Slump value less than 25 mm -> power driven.
Slump value - 25 - 50 mm -> hand driven.
Slump value - 50 mm -> Mechanical vibrator.
Slump value - 100 mm -> Normal vibrator.
Slump value - 25 - 50 mm -> hand driven.
Slump value - 50 mm -> Mechanical vibrator.
Slump value - 100 mm -> Normal vibrator.
(11)
Vikram said:
9 years ago
Segregation is defined as breakable cohesion between concrete particle.
Workability defined as ease (comfort) concrete in mixing, transporting and placing.
Workability defined as ease (comfort) concrete in mixing, transporting and placing.
Bibhuti Baishya said:
6 years ago
The mechanical vibrator is powered by a motor. Whereas normal vibration is carried out by a human using rods of suitable dia.
(3)
Garry said:
8 years ago
Right answer @Shiva.
It should be less than 25 mm for power driven vibrators.
And 25-50 mm for hand driven vibrators.
It should be less than 25 mm for power driven vibrators.
And 25-50 mm for hand driven vibrators.
(1)
Naveed khattak said:
1 decade ago
What is the difference between segregation and work ability? Can any body tell me regarding this?
Engineer Shailza kant said:
9 years ago
For road construction 20-40.
For vibrate 10-25.
Normal RCC work 80-150.
Mass concreting 25-50.
For vibrate 10-25.
Normal RCC work 80-150.
Mass concreting 25-50.
Ayaz tareen said:
9 years ago
Slump value of mass concrete without using vibrator should range in 6 to 7.5 cm.
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