It is always India who saves me with college. Love you india from netherlands
@shriji2000
3 ай бұрын
Same here brother 😊 Buy the way I am from India.
@ranjithkumard3080
3 жыл бұрын
Way of explaining about CBR test was really excellent and easy to understand. Thank you sir.
@highwayguidecivilwalk
6 жыл бұрын
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
@prasannraj548
4 жыл бұрын
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 .
@niteshnit-b663
2 жыл бұрын
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.
@umbertobombace8367
5 жыл бұрын
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
7 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
@BabyDummyRascal
7 жыл бұрын
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
@thinagarmithun3925
6 ай бұрын
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
@siddheshnarvekar9196
8 ай бұрын
Very detailed and clearly explained Thanks a lot Sir
@anamikadebnath7232
6 жыл бұрын
Love u sir. U olws helps us a lot. Salute to ur grt work n efficiency 💕
@ajayduggal5445
4 жыл бұрын
Thanks ! Happy to hear that.
@ajayduggal5445
3 жыл бұрын
thanks for your appreciation !
@AkshayKumaryadav-jc3mw
3 жыл бұрын
very nice explain congratulations Ajay sir 👍👍👍👍
@jovietan1286
6 жыл бұрын
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
@saikatgupta9942
7 жыл бұрын
Sir, beautifully explained video. Clearly detailed out. Great job.
@ajayduggal5445
5 жыл бұрын
thanks
@vinayjhinkwan4233
3 жыл бұрын
BEST VIDEOS FOR CIVIL ENGINEERING.
@kandadateja2391
3 жыл бұрын
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
3 ай бұрын
1 inch means 25mm not 2.5mm.
@saurabhchauhan1919
4 жыл бұрын
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
4 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 .
@varunkashyap7272
3 жыл бұрын
As per IS 2720 PART 16 - 1987 St. Load at 2.5 mm penetration is 1370 kgf. Thank u for the video sir.
@yashrana5236
3 жыл бұрын
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!
@alishafikhani4551
3 жыл бұрын
Thank you so much Mr. Ajay for the great presentation of the CBR test
@aparna603
Жыл бұрын
This video was really helpful Thankyou so much creators 🙏🏻
@trongsarkayta
Жыл бұрын
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😢
@KankanaSarma21
3 жыл бұрын
Thank you sir. This is a very detailed explanation. Very helpful
@hhhsingh1165
3 ай бұрын
😂 10 saal ka baad main dakha raha hu or mujhe samjh aaa gya wow ....or ajj kal ka teacher kuch bhi 😂😊
@edrisbaha3634
5 жыл бұрын
thank you NCTEL you upload very effective videos.
@ajayduggal5445
5 жыл бұрын
thank you
@prakashvaze34
6 жыл бұрын
I like this well explained thanks
@Dpk9707
3 жыл бұрын
Very nice demonstration with clear explanation....👏👏👍💐
@annidobo
Жыл бұрын
That was quite detailed. Thank you
@kirank1544
6 жыл бұрын
really useful and awesome presentation..thank you sir
@syednabeel8107
Ай бұрын
Is there any award for this man?
@vivekgami2701
6 жыл бұрын
very nice explaination sir
@warraqijobs1843
3 жыл бұрын
That was awesome MR.Ajay , Thank you a lot sir for this simple and clear explanation.
@dhananjoyray6370
3 жыл бұрын
Really a nice explanation made all doubts cleared.
@asrajo5728
2 жыл бұрын
Thank you sir, the tutorial is very useful. I wonder where the standard load value comes from sir?
@amitabhsrivastava6578
4 жыл бұрын
Sir your smile is too good..❤🙏
@ajayduggal5445
4 жыл бұрын
thanks ! one should enjoy doing what you need to do.
@highwayguidecivilwalk
6 жыл бұрын
Superliked cbr test nice sir very good thankyou
@praneyprakash2671
7 жыл бұрын
Very Helpful! Thank you!!
@stevep742
6 жыл бұрын
So what was the CBR for this example? Good video, but the most important part was not given.
@sand_deep7
6 жыл бұрын
Nice explanations...good job.
@joasmalibita
2 жыл бұрын
Wonderful and very detailed presentation, thank you sir 🙌🏿🙏🏿
@ajayduggal5445
Жыл бұрын
Thanks
@shashiranjan5262
5 жыл бұрын
thanks for making such awesome video But you didnot explain about the curing period of the specimen
@ajayduggal5445
4 жыл бұрын
4 days soaking if Soaked value to be found.
@shansajee2162
Жыл бұрын
It's very use full sir ...satta padi ah.
@cmakbarvlogs
3 жыл бұрын
What are procedure of soaking ?
@YogendraSingh-qt5kd
2 жыл бұрын
Very nice explanation. Thank you very much.
@mdmostafa4361
Жыл бұрын
Thank u sir for the details of the CBR test.
@rajashreechinta3710
Жыл бұрын
Great video sir
@rajashreechinta3710
Жыл бұрын
Thank you so much
@ajayduggal5445
Жыл бұрын
Thanks
@umeshdhanger7001
Жыл бұрын
What about 2 to 3 day soaking period .
@bashirshatiadde7486
Жыл бұрын
Thank you very much. well explained
@khangzeimalangmei9512
2 жыл бұрын
The soil should be first sieve to 19mm and retain in 4.75mm
@pradippatil8988
3 жыл бұрын
Beautifully explained sir
@qaisarkhan194
4 жыл бұрын
Great job sir. Well explained
@nisargjoshi8416
3 жыл бұрын
Good explaination sir
@er.ankursood7780
5 жыл бұрын
Very nice video sir. Very nice
@gaganreddy2023
2 жыл бұрын
Helpfull videos thank you sir.
@letsknowit96
6 жыл бұрын
Great job sir
@rameshdumpeti4650
4 жыл бұрын
What a smile sirjii
@ursshaheer2223
3 жыл бұрын
😄
@siddheshnarvekar9196
2 жыл бұрын
Sir thanks a lot for very very nice explanation
@CIVILSIVAR
9 ай бұрын
Sir i have one doubt. Please show Cbr test Tabulation and calculations
@ashutoshrajput895
6 жыл бұрын
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 .
@saumitramishra9730
5 жыл бұрын
Everything cleared, very nice video
@jayantchotaliya5901
3 жыл бұрын
Perfect explaination sir
@Iu-qx2bi
2 жыл бұрын
Who's still watching? 4/12/2021....
@feelthegame5074
2 жыл бұрын
Super sir
@amogharajgkulkarni6045
2 жыл бұрын
😄🖤thank u sir 👍🏿
@sandipkori2400
6 жыл бұрын
Very well explained.! Thanks sir
@manumt2852
Жыл бұрын
Tq so much for this video
@alphathegamer157
5 жыл бұрын
Thank you sir.👏😇
@user-hm2gb6pm6b
2 ай бұрын
So this explains why guys dont prefer class room !
@skbthoughtslearneveryday5579
5 жыл бұрын
Where the load of standard crushed stone gone !! That is also to be determined for cbr %
@manvendrasingh4409
6 жыл бұрын
nicely explained
@user-hm2gb6pm6b
2 ай бұрын
THEY RULED OUT ENVIRONMENTAL ENGINEERING ?
@juicygaming2652
3 жыл бұрын
It helps me lot sir 🥰
@SurajRaj-km4zk
6 жыл бұрын
Please upload heavy compaction of CBR test of soil
@all-rounderxyz2250
5 жыл бұрын
Nice explanation....thanks a lot....sir...
@reshu860
9 ай бұрын
Very very nice
@rameshramachari1915
4 жыл бұрын
Wow supper explain
@samiadil7873
4 жыл бұрын
Thanks sir
@SamorendraPal
10 ай бұрын
Thank you ❤
@anilchourasiya3574
6 жыл бұрын
very nice sir ji. tu si grate ho.
@pogo.the.swagger
3 ай бұрын
10 years ago 😂
@vishalgupt1694
5 жыл бұрын
Tanks a lot sir🙏🙏🙏
@Perfectguy2024
11 күн бұрын
Nice
@artisland1849
3 жыл бұрын
Why the CBR value at 2.5mm penetration is higher than 5mm penetration?
@clinteastwood2445
6 жыл бұрын
Its not complete Please tell us about Soaked and Unsoaked CBR test and their importance
@ajayduggal5445
5 жыл бұрын
Soaked test give you value under worst possible conditions. Most of designers adopt this value. But if soil subgrade is unlikely to get any moisture increment after construction , unsoaked value may be taken. Refer to IRC 37 guidelines.
@surveyhome741
6 жыл бұрын
Sir,Very Nice
@rampathak1784
3 жыл бұрын
thank you sir!!
@beryls
Жыл бұрын
how to calculate total load from unit load? multiply with area of plunger?
@vicky7477
6 жыл бұрын
Waah guru ji
@k283535
2 жыл бұрын
Sir Namaste🙏 Best initiative
@ajayduggal5445
Жыл бұрын
Thanks
@harshnamdev5156
6 жыл бұрын
Sir u said in vedio in heavy compaction giving 75 blows and in table written 56 which is correct
@ajayduggal5445
5 жыл бұрын
56
@tishilshah9803
3 жыл бұрын
Proving ring capacity which is used in CBR test
@happening2023
3 жыл бұрын
Sir in which code 56 blow for each layer is written?
@adilaparveenz.
2 жыл бұрын
Kollam poli
@naveensingh9237
5 жыл бұрын
Kab kaun so soil Lena hai kaise pta chalega?
@mayankshekhar8143
3 жыл бұрын
thanks sir
@jagadishk1694
Жыл бұрын
Thanks you sir
@k283535
5 жыл бұрын
Wow
@mariagaysimbajon9897
5 жыл бұрын
Good day Sir, How to get the value of CBR given the area,unconfirmed compressive strength and cohesion of soil. Thanks.
@ajayduggal5445
5 жыл бұрын
There are a few researches on this but they are specific to type of soil. I recommend always determine CBR directly except for preliminary investigations..
@mahalaxmipnayak4483
7 жыл бұрын
Super sir thank you sir
@ashishbhardwaj4516
6 жыл бұрын
Mahalaxmi p Nayak to make proper bindinf
@ashishbhardwaj4516
6 жыл бұрын
bonding
@THIRPATi
3 жыл бұрын
Thank you sir👏
@user-ds4kd4eh9q
5 жыл бұрын
What is the MINIMUM AND MAXIMUM CBR VALUE OF SUBGRADE AND GRANULAR SUB BASE
Пікірлер: 234