Concrete Core test at Lab

[@fajju247]

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

[@vivekbhoi8549]

Nice video, Very informative and easy understandable 👍

[@rajmaheta5330]

As per IS code individual sample Test also have minimum 75% of strength that is not matching

[@rajkamalyadav6831]

Please explain this question???

[@akhileshverma9823]

aap bahut hi excellent kam kar rahe h sir... 🙏🙏

[@HariKrishnan-wp9zp]

You're very good and extrimily best explanation good job thankful to you

[@rohitgarhwal2759]

Very good vedeo Very informative and helpful

[@mohammadfarhan368]

Good but what if there are steel bars in the core sample? what is the factor (FReinf) for steel bars...Plz

[@sanketjathar9513]

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.

[@dipupal9215]

Nice video sir. Ap bahut acha samjhate h

[@Fahad-471]

Very knowledgeable video Sir Thank you so much for sharing knowledge

[@deepakkatkar1378]

Nice explanation, superrr

[@tiktikboom4226]

Core capping is necessary as per is code.. without capping core likely to fail early..

[@mdangwal84]

Very informative video sir

[@DevenderSingh-vk6hp]

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

[@Nanikikahaniya3]

Yes, But sir jabarajasti pass krne pr tule h😅

[@rajasthanengineers3309]

Or isme cube strength ku nikale apn core ki strength dekh rahe hai na kuki m30 ki core strength 85 percent se kam na ho

[@sasankasekhar9735]

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

[@sasankasekhar9735]

Also there is acceptance for avg. of three cubes 85% of Fck & individual it will be more than 75% of Fck...

[@qureshiniyazahmed6492]

On which page number, dia. Correction factor is mentioned..plz state.

[@saiprakashraju1253]

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.

[@rbsinghcivilengineeringaca6777]

Due to the steel coming inside the core, its strength decreases because it gets a voids of core sample..

[@prakashbarik46]

Thank you Sir for this Video... It's so helpful

[@guddukumarsah-h5n]

Core cutting Kitna meter Mai karna chaiya

[@AbhishekSingh-xy7yv]

Sir but according to one Clause.. individual cylindrical strength should not be less than 0.75 fck. Iska kya matlab hoga?

[@rbsinghcivilengineeringaca6777]

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..

[@rbsinghcivilengineeringaca6777]

Is per is code guidelines.. 👍👍

[@subratkumaranayak6232]

Pls sir is code ka nam bata dijiye

[@mohdubaish4636]

516

[@naveensingh9237]

Clear core cutting test

[@shankerkumardas7048]

correction factor=2 than cylinderical strength should be= strength X correction factor i.e- 19.14 x 2

[@nageshkallem3611]

U can't remove the steel how to strength achieve?

[@Blogcompany_New]

Sir MORTH me likha hai ki Dia 150 mm se km nhi hona chahiye section 900 me diya hai MORTH me

[@rbsinghcivilengineeringaca6777]

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.

[@SkengineerQAQC]

Sar ismein Beria son Kitna achieve karna hai

[@santoshnamdev1238]

Yadi core ke andar steel aa jata h to uska strength kse minus krte h sir

[@himanshupal3731]

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 🙏

[@rbsinghcivilengineeringaca6777]

Ok

[@mohammedarif2368]

Sir aap ne correction factory of reinforcement kase nikala plz batana

[@deepakjain9053]

Goooood important knowledge boss👍👍

[@guddukumarsah-h5n]

Sir Core cutting Kitna meter Mai karna chaiya

[@pranavnaxane2252]

Sir table mein 4th row mein 2 correction factor kese liye

[@rbsinghcivilengineeringaca6777]

Correction factor 2 me 1 lena hai already table me mention hai is code -516 me hai please check karo..

[@Terminator616]

Should we make cube of 9.8 mm side or we compare with 150mm cube?

[@Akash24274]

Very nice video sir 😊😊

[@hazratbilal7246]

How you assume the paste rate???

[@pavankumaryadav4900]

Thanks sir to share your best knowledge

[@modassariqbal306]

Sir jo core cutting krte hai to us gap ko ki material s fill krna hota hai jis structure member s core nikala hai us me what types material used to fill inside...... please make 1 video sir

[@rbsinghcivilengineeringaca6777]

Yadi concrete ka grade M25 Jo aap ne core cutting kiya hai toa M30 grade ka concrete ya Grouting material GP2 se dear.

[@modassariqbal306]

@rbsinghcivilengineeringaca6777 Thanku sir

[@DharmendraKumar-gq4fc]

Superb sir

[@vamsireddy6032]

Very good explanation sir

[@harvinders18]

Ssa bhaji … kya charge krte ho corecutting test ke

[@samrankhan1120]

Sir sulfur capping must into both side...

[@AMOLJADHAV-nu1bb]

What is the 1.25 ..? And why..? Please explain..

[@amarpc3532]

Dear sir how plz tell me how to set 140kg/cm 2 after conversation 5.13 in/sec how to do trail error method

[@shivamupadhyay3043]

4:02 CORE CAPPING?

[@dineshahlawat5001]

For core test 516 :2017 follow up .

[@rbsinghcivilengineeringaca6777]

Yes...

[@qamarpasha8705]

thumbs up brother. love from Pakistan

[@CivilEngineeringbyAnkur]

Which is code detemine cube strength multiple 5/4change of

[@rbsinghcivilengineeringaca6777]

Is code - 516, Cylinder strength by 5/4 , Page no - 12 & table - 5.6.1 A...

[@KumarP-tr8xe]

Excellent video 👍

[@nemichandbabal.7533]

Sir ye individual strength me fail ho rhe h as per code IS -456

[@rbsinghcivilengineeringaca6777]

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..

[@rbsinghcivilengineeringaca6777]

2 cube ki average strength not less than 21.25 N/mm2 as per is code 85 % of Grade of concrete..& individual strengths 75%..

[@nemichandbabal.7533]

Bahut bahut dhanyawad sir

[@Tukaram26]

Very Nice information 👍👍👍

[@fox6766]

Any translation for this video in English?

[@rbsinghcivilengineeringaca6777]

No dear only for Hindi language available at KZbin channel.. sorry

[@fox6766]

@@rbsinghcivilengineeringaca6777 No issue Mr. Singh I will try to understand if I could 😅👍🏻 Thanks

[@sachinnanavare6750]

Sir make it video on rebound hammer test Calculation and report

[@dineshahlawat5001]

Sir not showing Correct method of testing Core test .. where showing Capping in core for testing for surface in CTM testing machine

[@rbsinghcivilengineeringaca6777]

Already surface preparation done before testing..

[@faultychannel7106]

Where are you from sir

[@numanakhtar8519]

Sir cylinderical strength 85% hona chahiye na cube strength ka...

[@rbsinghcivilengineeringaca6777]

Yes brother.. 👍

[@shaikdasthagiri8517]

What about shotcrete core strength achieved in 28 days core strength?

[@kamranullah4780]

Dia will be check with vernier caliper

[@Akash-1238]

1 core kitne area se cut karte hai

[@shivamupadhyay3043]

3:22 RATE OF LOADING140 KG/SQ CM/MIN

[@pchetan266]

Sir concrete cube 28 days me 100% strength chahiye Lekin core ka 80% kyo

[@rbsinghcivilengineeringaca6777]

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..

[@rbsinghcivilengineeringaca6777]

Control conditions me rakha jata hai..

[@salimjavid135]

@@rbsinghcivilengineeringaca6777Sir, is there any codal reference for 80% strength (acceptable)

[@rbsinghcivilengineeringaca6777]

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..

[@salimjavid135]

@@rbsinghcivilengineeringaca6777 Got it, it’s clearly mentioned in IS 456 👍

[@deviddas9511]

Strength ko N/mm² se percentage me kese convert krte hein?

[@faultychannel7106]

Location

[@vikramdalvi2898]

Steel hai to kaise test ho jaega

[@Akash24274]

And very good quality of video

[@ajaykumarverma7387]

very nice information sir ....

[@vilaspatil3148]

What about steel factory sir

[@anootalks4077]

Individual cube strength also should not fall below 75% .. but in ur case for 2nd sample it is less than 75% what about it?

[@rbsinghcivilengineeringaca6777]

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..

[@anootalks4077]

@@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?

[@rbsinghcivilengineeringaca6777]

@@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 .

[@rbsinghcivilengineeringaca6777]

@@anootalks4077 And if the parameters of the cube set do not meet the IS code limits, this Cube set is rejected.

[@anootalks4077]

@@rbsinghcivilengineeringaca6777 thanku very much for ur reply

[@NikitaSharan-g3b]

Correction factor samjh nahi aaya

[@onlytanmay]

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

[@snarasimha84]

Sir core ka caping karna tha

[@mustakimansari5756]

Very good 👍

[@mohammedarif2368]

How to tak volume and bulk dentist

[@onlytanmay]

πr²h is volume

[@onlytanmay]

And ρ=Weight Measured/Volume

[@SHAHBAZ7466]

Caping ni ki es ko

[@harishmalladihalli4588]

Sooper info dhanyavaad.

[@bijanmaity3459]

Sir this result is not appropriate for acceptation condition, because three cube result not under 15%.

[@rohits1288]

Sir where are you from & In which company do you work ?

[@mscivilconstruction2338]

sir agar steel a jaye core main to kya correction factor lagega

[@rbsinghcivilengineeringaca6777]

Yes

[@mscivilconstruction2338]

konsa factor lagna hai sir as per is code

[@jyotirmoy_43]

Thank you sir . Want some more video ❤

[@yashbogawar3557]

Sir, one request to you, Please mention the IS CODE NO. also in video.

[@rbsinghcivilengineeringaca6777]

Ok , IS code - 516 for lab testing..

[@rbsinghcivilengineeringaca6777]

Dear good morning.. Is code already mention hai video & notebook mein bhi mention..

[@yashbogawar3557]

@@rbsinghcivilengineeringaca6777 thank you.

[@prabhatmishra7107]

Sir IS 516 me kon sa part me h ....Plz reply

[@jocks5176]

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.

[@expose.india1430]

How to convert core average into percentage

[@Blogcompany_New]

Strength me variation bhut aa rha hai.. 5% tk allow hai

[@anilsingh8430]

Very nice video

[@souravmukherjee1992]

Sir I just a request to you, please detail discuss about 516 and accepance criteria

[@rbsinghcivilengineeringaca6777]

Ok, sure brother 👍👍

[@nishant.centkanes]

What about variation of + - 15% of individual w.r.t average

[@rbsinghcivilengineeringaca6777]

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..

[@rbsinghcivilengineeringaca6777]

Ok dear aur koi question???..

[@AHoney-xl9ux]

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.

[@manishsahu2252]

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?

[@guddukumarsah-h5n]

Sir core cutting Kitna meter Mai karna chaiya

[@KISHORKUMAR-mm7bg]

Excellent sir thank you sir

[@falkebrothersatulfalke9281]

Thanks 😊

[@jitendrashah205]

Strength calculation video too fast.cant understand properly.

[@sankartavar1867]

Good video

[@feelthegame5074]

Thank you very much sir....

[@DharmGoud]

Correction factor 2 hona chahiye

[@miniyoutuber666]

sir core test ka details vedio as per is code banyaye please

[@utpalbiswas6292]

Nice

[@Anandcomdey78]

Thanks sir ji

[@AHoney-xl9ux]

Please make video for compressive strength of concrete block.

[@Vishalkumar-nb5en]

Sir agar aap new youth ko help karna chahte hai to apna number dijiye please

[@rbsinghcivilengineeringaca6777]

My dear friend, we are 24 hours ready to help you as much as we can.🙏🙏

[@SkengineerQAQC]

Sir isme variation limit Kitna acceptable hai.which Coad.

[@rbsinghcivilengineeringaca6777]

@@SkengineerQAQC ???

[@rbsinghcivilengineeringaca6777]

@@SkengineerQAQC Question clear Nahi hai bhai..

[@rakeshsahu3778]

Area calculations wrong

[@jawaharp8901]

Core test all test fail next what do demolish element

[@rbsinghcivilengineeringaca6777]

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..

[@md.musharraf7950]

Good

[@avadheshsingh8006]

मेरे प्रश्न का जवाब दे ।pls

[@rmengineers2351]

where capping

[@RajeevKumar-cf4xq]

Thanks sir