It is always India who saves me with college. Love you india from netherlands

@shriji2000

Ай бұрын

Same here brother 😊 Buy the way I am from India.

Way of explaining about CBR test was really excellent and easy to understand. Thank you sir.

This video was really helpful Thankyou so much creators 🙏🏻

Thank you so much sir. These videos are helping me a lot .

I like this well explained thanks

Love u sir. U olws helps us a lot. Salute to ur grt work n efficiency 💕

@ajayduggal5445

3 жыл бұрын

Thanks ! Happy to hear that.

@ajayduggal5445

3 жыл бұрын

thanks for your appreciation !

This video is very usefull for quality lab engineers .... Thanks a lot sir for uploading such a good topic video

@vuyyurucharanprudhvisai9985

4 жыл бұрын

We are working in QC lab

thank you so much. this video helped me to understand CBR test easily. well explained.

@dokiepemwithloveinsane8954

5 жыл бұрын

I didnt understand it properly...can you please

Very Helpful! Thank you!!

Ur patience during explanation is superb, thanks a lot Sir🙏

@ajayduggal5445

3 жыл бұрын

The basic objective was develop understanding. A few people find the pace of it to be slow in modern times .

That was quite detailed. Thank you

thank you NCTEL you upload very effective videos.

@ajayduggal5445

5 жыл бұрын

thank you

BEST VIDEOS FOR CIVIL ENGINEERING.

Thank you so much Mr. Ajay for the great presentation of the CBR test

really useful and awesome presentation..thank you sir

Thank you Sir......these lab experiment are very useful for me to understand during covid -19 because in this situation our colleges are going completely online so these videos are very helpful for students.......... again thank you so much sir.....

@ajayduggal5445

Жыл бұрын

Happy to hear that.

Very nice demonstration with clear explanation....👏👏👍💐

very nice explain congratulations Ajay sir 👍👍👍👍

Very detailed and clearly explained Thanks a lot Sir

Very professional and well explained. Very compliant to the regulation. Yet, let me give you a precise tip: the first done, with the mold and the hammer, actually is not the CBR, but the Proctor test. The CBR is the last, done with the assistant. The two tests are strictly related (CBR is gonna be executed after the proctor) but they are two different test. The proctor test is aimed to evaluate the optimum, i.e. the maximum amount of water (weight %) to have the max density. Indeed, until a certain value (depending on the kinda soil), water furthers the bonds between the grains and, hence, the density, becouse of the water film between. But over a certain value, water is too much and it tends to counteract the density, making the grains submerged into water. Like all the other lab geotech. tests, this one also requires several tests; for each test the soil must be weighed, subtracting the weight of the mold (previously weighed void) and the weight of water (knowing its amount in each test) to find the net dry weight. All the results are plotted in the optimum bell curve, built step by step (water content % vs dry density in the diagram) and compared them each other, to see which one is at the top of the curve (the content of water, called optimum indeed, that gives the most performing soil).

@dadajulius6489

2 жыл бұрын

@@erkamkurt3127 I read @Umberto Bombace comment. He is absolutely correct.😀

@bashirshatiadde7486

Жыл бұрын

@@erkamkurt3127 I read the comment well and he is correct.

@kripke9396

6 ай бұрын

Proctor test is usually done in a smaller mould. Without any spacer disc. Though anything is fine. And for CBR we have to prepare the sample and therefore the first is definitely part of the CBR TEST

Really a nice explanation made all doubts cleared.

Superliked cbr test nice sir very good thankyou

Nice explanations...good job.

Great job sir

Thank you very much. well explained

Sir your smile is too good..❤🙏

@ajayduggal5445

3 жыл бұрын

thanks ! one should enjoy doing what you need to do.

Very nice explanation. Thank you very much.

Great job sir. Well explained

Very well explained.! Thanks sir

Thank u sir for the details of the CBR test.

Sir, beautifully explained video. Clearly detailed out. Great job.

@ajayduggal5445

5 жыл бұрын

thanks

😂 10 saal ka baad main dakha raha hu or mujhe samjh aaa gya wow ....or ajj kal ka teacher kuch bhi 😂😊

Everything cleared, very nice video

Beautifully explained sir

As per IS 2720 PART 16 - 1987 St. Load at 2.5 mm penetration is 1370 kgf. Thank u for the video sir.

Wonderful and very detailed presentation, thank you sir 🙌🏿🙏🏿

@ajayduggal5445

Жыл бұрын

Thanks

how to calculate total load from unit load? multiply with area of plunger?

It helps me lot sir 🥰

😄🖤thank u sir 👍🏿

nicely explained

Tq so much for this video

How to know penetration value and how to read proving ring readings

What are procedure of soaking ?

Thank you ❤

That was awesome MR.Ajay , Thank you a lot sir for this simple and clear explanation.

Video at 4:27 says heavy compaction of 75 blows for each layer in 5 layers. But the table shows only 56 blows. Only legend will understand. I did mot get convinced😢

Thank you sir.👏😇

What about 2 to 3 day soaking period .

very nice explaination sir

What a smile sirjii

@ursshaheer2223

3 жыл бұрын

😄

Waah guru ji

very nice sir ji. tu si grate ho.

Nice explanation....thanks a lot....sir...

So what was the CBR for this example? Good video, but the most important part was not given.

Proving ring capacity which is used in CBR test

Very greatly explained sir... Thanks Thanks Thanks sir 🙏 🙂

@ajayduggal5445

5 жыл бұрын

Happy to know that

What is the MINIMUM AND MAXIMUM CBR VALUE OF SUBGRADE AND GRANULAR SUB BASE

Sir in which code 56 blow for each layer is written?

Helpfull videos thank you sir.

thank you sir!!

Perfect explaination sir

Most of the people doesn't know why 2.5 mm value is considered it is actually 1 inch according to American standard test procedure and the rock used was of 1 pound weight and it was found generally in california....

@tanmoysahoo2381

2 ай бұрын

1 inch means 25mm not 2.5mm.

Beautifully explained the CBR test. Great job Ajay sir! Also, i would like to tell NCTEL to make a correction in the video. 4:42 - Dynamic compaction table, the no. of blows in heavy compaction should be 75 (it is written 56).

@ajayduggal5445

5 жыл бұрын

75 blows are given in Marshall Test . This test requires 56.

@prakshamnagar2030

4 жыл бұрын

This test req 56 only

Very nice video sir. Very nice

Where the load of standard crushed stone gone !! That is also to be determined for cbr %

Sir thanks a lot for very very nice explanation

thanks for making such awesome video But you didnot explain about the curing period of the specimen

@ajayduggal5445

3 жыл бұрын

4 days soaking if Soaked value to be found.

Tanks a lot sir🙏🙏🙏

Please upload heavy compaction of CBR test of soil

Why the CBR value at 2.5mm penetration is higher than 5mm penetration?

Very very nice

First of all thank you for such clear explanation, i am here to know ans for my question, 1) how we differentiate casting of specimen at 95℅ compaction(as per MORTH), 97% compaction(as per IRS) or 100% compaction of MDD for blanket layer. 2) how setting load applied, and how much it is on dial gauge reading, Please replied it i really want to know this.

@ajayduggal5445

3 жыл бұрын

100 % compaction is not practicable at site due to less control on moisture content and other variables. So as per specified requirements compact to desired degree .

Kollam poli

nice tq

Good explaination sir

The soil should be first sieve to 19mm and retain in 4.75mm

hi sir thank you for uploading video for learning. can u explain me where we can use 3 layer comaction and where for 5 layer compaction methods and how would we analyse its loose dense soil and high dense soils

Great video sir

@rajashreechinta3710

Жыл бұрын

Thank you so much

@ajayduggal5445

Жыл бұрын

Thanks

Wow supper explain

please define the no. of blows for 97 % compaction 10, 30, 65 for the cbr casting, because required no. of blows as per ASTM D1883 (10, 25, 56 blows) compaction for 95% (how to calculate 10, 30, 65 blows for 97% compaction or where are write this criteria.)

@ajayduggal5445

5 жыл бұрын

25 for light compaction and 56 for heavy .

Sir,Very Nice

Perfect

i am studying in canada but still this video was helpful, thanks Mr ajay

@ajayduggal5445

3 жыл бұрын

Happy to hear that.

@ekap1916

2 жыл бұрын

So What if you are studying in Canada? Civil Engineering is same.

@ajayduggal5445

Жыл бұрын

Welcome!

Super sir

Thanks sir

It's very use full sir ...satta padi ah.

Nice video

Thanks you sir

👍👍👍👍👍 GREAT

Thank you sir, the tutorial is very useful. I wonder where the standard load value comes from sir?

Thanks

Good video

Thank you sir👏

Good 👍👍❤️

Wow

thanks sir

nice sir.

I graduated this year in my first bachelor degree in geological engineering, so if there is some one that can tell me about the scholarships let me know? Thank you.

Can anybody explain me how to draw graph for corrected load intensity?

@Pararjvaun

11 ай бұрын

If initial portion of your graph is curved inwards it requires correction...you can simply draw a tangent for that portion of the graph and check where the tangent meets at your X axis, that's your new 0

and the saturation of the material before the loading test?

@BigV2291

6 жыл бұрын

first you make Proctor test to know the optimal water content