Laboratory experiments conducted in Mumbai on a particular
mix showed a
strength of 33 MP a for a fully matured concrete. Find
whether formworm
can be removed for an identical concrete placed at Jammu at
the age of 15
days when the average temperature is 60C. The stripping
stress in concrete
- 2 Answers
- 4139 Views
- CCIL, I also Faced
- E-Mail Answers
Answer Posted / buntychandwani
First thing the question is not completely and correctely
typed. The stripping stress in concrete in missing and also
how 60 deg temp will be possible in Jammu & Kashmir.
Let us connsider the Stripping stress of concrete as 25 Mpa
and average temp is 6 deg.
Now,
Maturity = Submission (time x temp)
= 15 x 24 x [6 - (11)]
= 6120 deg CH
Plowman's Constant given as A = 21 and B = 61
Se/S 15 = A + B Log10 [ M /1000]
Percentage of strength = 21 + 61 log(6120/1000)
= 68.99
The strength of Concrete at 15 days = 33 x (68.99/100)
= 22.76 Mpa
Since the strength of concrete is less than the stress
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
i have applied 40mm spacer in the concrete for tie beam. is it correct? kindly give me if there any code available
How to do base isolation for RC framed structure using ETABS software?
how to do sudoko puzaals?
What is the meaning of soil reinforcement?
for 200 kg of cement how is the mix proportion in kg for m25 grade of concrete
What is rate for brick masonry work of 1.0 m3 in cm 1:6?
How much does the leaning tower of pisa lean?
Types of column foundation and how to calculate its steel quantity.
What is proportion of PCC Grade G?
In a beam,stirrups are placed closely at ends than at centre due to shear.similarly where would ties be closer to each other-at center or at ends in a column and slab.
what is the use of beam end forces while using a staad ? wha they are show
What should be the lap length in raft if height of raft is 0.800mm ...it couldn't b 50D or 40D...we just have to join upper and bottom reinforced...is there any formula for determine it...
What is the nature of duties & responsibilites senior civil engineer ?what is self confident & satisfaction should be a senior civil engineer?
types of laps in column
What is the strength of 1:6:12 mix?
