Without capping to core is wrong procedure ref IS 516 part 4 2018 And correction factor formula is give F=0.11N+ 0.78 Where N is hight / diameter ratio. Graph 📈 is in old IS 516- 1959
is this ok to have a steel in concrete core while testing and if its ok then what is based used for this by yours side. Please give us a knowledge about in brief.
Thank you sir itni jankari dene ke liye bahut achh lga pura vedio smjhh aa gaya Sir cub ki strength persentage me kaise calculate krte hai iska ek vedio bna dijiye 🙏
i see your video and easy understable but you forget about tell individual strenth, i see in your video the 2nd sample is fail 15. something so you forget tell about individual calculation. thankyou sir, Im a QA/Qc Engg.
you just applied two correction factors..one is L/D & other is equivalent cibe strength...but there is another according to IS code & which is dia correction factor, for this it will be multiplied by 1.03 for dia more than 75 mm
Because actual compression strength of concrete core is taken as 0.85 times of specified cylindrical strength. cylindrical strngth is given by 0.85fck As per your question :- 0.75 fck, Fck :- characteristic strength of concrete. Yani ki 0.75 × 25 ( 25 Grade of Concrete) 18.75 N/mm2 is individual strength but average strength not less than 0.85 fck 0.85 × 25 :- 21.25 N/mm2..
Dear, Minimum diameter of greater of three times the maximum nominal size of the coarse aggregate or 50 mm, Diamond segmented core bit in Hilti , Size - 50 mm to 600 mm dia & length 300 mm to 2000 mm I hope cleared this issue.
Dear cube ya Core , Variation +-15% hi hai but Haam ne 03 Set core liya tha is liye 3 set core me acceptable limit,, jaise ki aapane note Sheet mein Dekha hoga.. Aur yadi individual ki baat karte Hain to not acceptable..
Dear, very nice info. But what is factor of concrete cube 15×15×15 cm during compressive test. Because ratio 15/15 = 1. Guide at this point of cube test.
The core individual sample acceptable limits + - 15% of average strength , As per is code - 456 & 516 , but core average strength not less than 85% of Grade of Concrete, individual Strength less than 85 % acceptable but average strength not less than 85%.. as per is code guidelines..
@@rbsinghcivilengineeringaca6777 ok..so individual cube strength should not be less than 15% ? If it's less than 15% and overall average strength is 85% also then we have to reject it?
@@anootalks4077 Yes , If the strength of any one of the three cubes is much more or less than the average strength, then it is discarded and the strength of the two cubes is check the average strength for , And the strength of individual both cubes is + - 15% of average strength and average strength not less than 85 % of the grade of the Concrete .
Kyunki cube control condition mein rakha Kar check karte hain aur core Foundation se nikal Kar Lete hai aur check karte hain, ISH liye as per IS code 80% required hai..
1) rebound hammer test 2) ultrasonic pulse velocity test 3) discussion to designer 4) jacketing and extra support provided 4) calculation the load All parameters are not meeted, So demolish the building..
Sir ..it's not proper explanation,, app explanation dethatha...beguth perfect tha,understandable, but a tik nahi Correction Factor x 1 ... not get also not get graph . Sir app beguth knowledge diyya pahale ... Mera expectation app pahale zyse explanation Dena, appka steel ka vlog super ... please keep it that way
Nice video, Very informative and easy understandable 👍
You're very good and extrimily best explanation good job thankful to you
Very knowledgeable video Sir
Thank you so much for sharing knowledge
Thank you Sir for this Video... It's so helpful
Very good vedeo Very informative and helpful
aap bahut hi excellent kam kar rahe h sir... 🙏🙏
Thanks sir to share your best knowledge
Nice video sir.
Ap bahut acha samjhate h
Excellent video 👍
Without capping to core is wrong procedure ref
IS 516 part 4 2018
And correction factor formula is give
F=0.11N+ 0.78
Where N is hight / diameter ratio.
Graph 📈 is in old IS 516- 1959
Very informative video sir
Nice explanation, superrr
Very good explanation sir
Very Nice information 👍👍👍
Sooper info dhanyavaad.
very nice information sir ....
is this ok to have a steel in concrete core while testing and if its ok then what is based used for this by yours side. Please give us a knowledge about in brief.
Excellent sir thank you sir
Very nice video sir 😊😊
Good but what if there are steel bars in the core sample? what is the factor (FReinf) for steel bars...Plz
Thank you very much sir....
And very good quality of video
Goooood important knowledge boss👍👍
Sir Core cutting Kitna meter Mai karna chaiya
Should we make cube of 9.8 mm side or we compare with 150mm cube?
Thank you sir . Want some more video ❤
What about shotcrete core strength achieved in 28 days core strength?
Superb sir
Thanks 😊
Clear core cutting test
Yadi core ke andar steel aa jata h to uska strength kse minus krte h sir
U can't remove the steel how to strength achieve?
Very nice video
correction factor=2 than cylinderical strength should be= strength X correction factor i.e- 19.14 x 2
Sir sulfur capping must into both side...
How to convert core average into percentage
Very good 👍
Strength ko N/mm² se percentage me kese convert krte hein?
Ssa bhaji … kya charge krte ho corecutting test ke
1 core kitne area se cut karte hai
Good video
Strength of individual core shouldn't be less than 75% of fck I.e.18.75 but 2nd reading is 15.78mpa which is unacceptable
Yes,
But sir jabarajasti pass krne pr tule h😅
Core capping is necessary as per is code.. without capping core likely to fail early..
Sir aap ne correction factory of reinforcement kase nikala plz batana
Sir make it video on rebound hammer test Calculation and report
What about steel factory sir
Thanks sir
Thanks sir ji
Dia will be check with vernier caliper
Location
Dear sir how plz tell me how to set 140kg/cm 2 after conversation 5.13 in/sec how to do trail error method
Where are you from sir
Steel hai to kaise test ho jaega
Nice
Thank you sir itni jankari dene ke liye bahut achh lga pura vedio smjhh aa gaya
Sir cub ki strength persentage me kaise calculate krte hai iska ek vedio bna dijiye 🙏
Ok
i see your video and easy understable but you forget about tell individual strenth, i see in your video the 2nd sample is fail 15. something so you forget tell about individual calculation. thankyou sir, Im a QA/Qc Engg.
Sar ismein Beria son Kitna achieve karna hai
As per IS code individual sample Test also have minimum 75% of strength that is not matching
Please explain this question???
Strength me variation bhut aa rha hai.. 5% tk allow hai
Good
what about steel inside, you take still also, so strength had came more....in cube at the time of concrete inside no steel, kindly explain.
Due to the steel coming inside the core, its strength decreases because it gets a voids of core sample..
you just applied two correction factors..one is L/D & other is equivalent cibe strength...but there is another according to IS code & which is dia correction factor, for this it will be multiplied by 1.03 for dia more than 75 mm
Also there is acceptance for avg. of three cubes 85% of Fck & individual it will be more than 75% of Fck...
On which page number, dia. Correction factor is mentioned..plz state.
For core test 516 :2017 follow up .
Yes...
Correction factor samjh nahi aaya
Sir core ka caping karna tha
Please make video for compressive strength of concrete block.
Sir but according to one Clause.. individual cylindrical strength should not be less than 0.75 fck. Iska kya matlab hoga?
Because actual compression strength of concrete core is taken as 0.85 times of specified cylindrical strength.
cylindrical strngth is given by 0.85fck
As per your question :- 0.75 fck,
Fck :- characteristic strength of concrete.
Yani ki 0.75 × 25 ( 25 Grade of Concrete)
18.75 N/mm2 is individual strength but average strength not less than 0.85 fck
0.85 × 25 :- 21.25 N/mm2..
Is per is code guidelines.. 👍👍
Pls sir is code ka nam bata dijiye
516
Which is code detemine cube strength multiple 5/4change of
Is code - 516, Cylinder strength by 5/4 , Page no - 12 & table - 5.6.1 A...
4:02 CORE CAPPING?
Sir where are you from & In which company do you work ?
Sir this result is not appropriate for acceptation condition, because three cube result not under 15%.
👍
Sir cylinderical strength 85% hona chahiye na cube strength ka...
Yes brother.. 👍
Sir table mein 4th row mein 2 correction factor kese liye
Correction factor 2 me 1 lena hai already table me mention hai is code -516 me hai please check karo..
Caping ni ki es ko
3:22 RATE OF LOADING140 KG/SQ CM/MIN
Sir ye individual strength me fail ho rhe h as per code IS -456
Sir ji ish condition mein jish cube ka strength kam ya jada aati hai usko cube ko discard kar dete hai aur 2 cube ka average lete Hain..
2 cube ki average strength not less than 21.25 N/mm2 as per is code 85 % of Grade of concrete..& individual strengths 75%..
Bahut bahut dhanyawad sir
Sir I just a request to you, please detail discuss about 516 and accepance criteria
Ok, sure brother 👍👍
Without salfar clotting
How to tak volume and bulk dentist
πr²h is volume
And ρ=Weight Measured/Volume
Sir not showing Correct method of testing Core test ..
where showing Capping in core for testing for surface in CTM testing machine
Already surface preparation done before testing..
Sir MORTH me likha hai ki Dia 150 mm se km nhi hona chahiye section 900 me diya hai MORTH me
Dear, Minimum diameter of greater of three times the maximum nominal size of the coarse aggregate or 50 mm,
Diamond segmented core bit in Hilti ,
Size - 50 mm to 600 mm dia & length 300 mm to 2000 mm
I hope cleared this issue.
where capping
Spreading somewhat little misinformation as per my book , because for L/D ratio of greater than 1.75 we don't have to take correction factor
What about variation of + - 15% of individual w.r.t average
Dear cube ya Core , Variation +-15% hi hai but Haam ne 03 Set core liya tha is liye 3 set core me acceptable limit,, jaise ki aapane note Sheet mein Dekha hoga..
Aur yadi individual ki baat karte Hain to not acceptable..
Ok dear aur koi question???..
Dear, very nice info. But what is factor of concrete cube 15×15×15 cm during compressive test. Because ratio 15/15 = 1. Guide at this point of cube test.
Any translation for this video in English?
No dear only for Hindi language available at TH-cam channel.. sorry
@@rbsinghcivilengineeringaca6777 No issue Mr. Singh
I will try to understand if I could 😅👍🏻
Thanks
sir agar steel a jaye core main to kya correction factor lagega
Yes
konsa factor lagna hai sir as per is code
Individual cube strength also should not fall below 75% .. but in ur case for 2nd sample it is less than 75% what about it?
The core individual sample acceptable limits + - 15% of average strength , As per is code - 456 & 516 , but core average strength not less than 85% of Grade of Concrete, individual Strength less than 85 % acceptable but average strength not less than 85%.. as per is code guidelines..
@@rbsinghcivilengineeringaca6777 ok..so individual cube strength should not be less than 15% ? If it's less than 15% and overall average strength is 85% also then we have to reject it?
@@anootalks4077 Yes , If the strength of any one of the three cubes is much more or less than the average strength, then it is discarded and the strength of the two cubes is check the average strength for , And the strength of individual both cubes is + - 15% of average strength and average strength not less than 85 % of the grade of the Concrete .
@@anootalks4077 And if the parameters of the cube set do not meet the IS code limits, this Cube set is rejected.
@@rbsinghcivilengineeringaca6777 thanku very much for ur reply
👍👍🙏🙏🌹🌹
Strength calculation video too fast.cant understand properly.
Sir concrete cube 28 days me 100% strength chahiye
Lekin core ka 80% kyo
Kiyu ki cube ko conditions mea aur curing tank mein rakha jata hai jabki Core ko Foundation se nikala jata hai & test Kiya Jata hai ISH liye dear..
Control conditions me rakha jata hai..
@@rbsinghcivilengineeringaca6777Sir, is there any codal reference for 80% strength (acceptable)
Kyunki cube control condition mein rakha Kar check karte hain aur core Foundation se nikal Kar Lete hai aur check karte hain, ISH liye as per IS code 80% required hai..
@@rbsinghcivilengineeringaca6777 Got it, it’s clearly mentioned in IS 456 👍
मेरे प्रश्न का जवाब दे ।pls
Area calculations wrong
Sir, one request to you, Please mention the IS CODE NO. also in video.
Ok , IS code - 516 for lab testing..
Dear good morning.. Is code already mention hai video & notebook mein bhi mention..
@@rbsinghcivilengineeringaca6777 thank you.
Sir IS 516 me kon sa part me h ....Plz reply
sir core test ka details vedio as per is code banyaye please
Core test all test fail next what do demolish element
1) rebound hammer test
2) ultrasonic pulse velocity test
3) discussion to designer
4) jacketing and extra support provided
4) calculation the load
All parameters are not meeted, So demolish the building..
sir as per is code compressive strength should not differ more than +,- 15% but aapke result mai toh 35% tak excceed kar rha hai kaise?
Sir core cutting Kitna meter Mai karna chaiya
Sir ..it's not proper explanation,, app explanation dethatha...beguth perfect tha,understandable, but a tik nahi
Correction Factor x 1 ... not get also not get graph . Sir app beguth knowledge diyya pahale ... Mera expectation app pahale zyse explanation Dena, appka steel ka vlog super ... please keep it that way
Copping material
Copping only for surface smoothness & flatness ke liye use karte Hain..
Sir agar aap new youth ko help karna chahte hai to apna number dijiye please
My dear friend, we are 24 hours ready to help you as much as we can.🙏🙏
Sir isme variation limit Kitna acceptable hai.which Coad.
@@sanjeevkumar-kw7sj ???
@@sanjeevkumar-kw7sj Question clear Nahi hai bhai..
Worng testing