TEST FOR WORKABILITY OF CONCRETE - SLUMP CONE
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- เผยแพร่เมื่อ 9 ก.พ. 2025
- The ease with which one can use concrete is called workability. It is one of the physical parameters of concrete which affects the finesse, strength and durability. Here’s how you can check the workability of your concrete.
For everyones benefit, acceptable safe slump for reinforced foundation walls/footings/pavement 25-80mm, beams/columns 25-80mm, slab 50-100mm, piling 100-150mm. Beyond these values are not safe.
Thanks man
As per IS 1199 slump cone is filled in four layer,so don't confuse with comments. This video is wonderful and precise
th-cam.com/video/q0G17VnmZG8/w-d-xo.html
Wrong
Not ASTM C 143 but Indian Standard (IS-1199) ?
Depending on what standard you are using
Great class sir🎉❤
I like your teaching method and the way you share the knowledge. 👍👍 Keep up the productive work.
Hello,
We are happy you found this useful. For more information on home building you can visit our TH-cam channel th-cam.com/users/UltraTechCementLimited
Regards,
Team UltraTech
Thanks for explaining the information in such a way that everyone can understand. Good lesson.
We are happy you found this useful. For more information on home building you can visit our website www.ultratechcement.com .
Regards,
Team UltraTech.
What a useful and clear explanation thank you 🌹
Hey fantastic work guys. Thank you for explaining it well - very helpful!
Thank you ultra tech. This helps me for my lab exam preparation
Hello,
We are happy you found this useful. For more information on the home building, you can visit our TH-cam channel - th-cam.com/users/UltraTechCementLimited
Regards,
Team UltraTech
Slump test express the consistency of concrete mix, workability is measured by " Compacting factor" or " Remoulding test by Jolting" or " V.B test".
Watching this video just minutes before exam
Very simple nice explanation, Thanks a lot.
"First you need to steal a traffic cone"
lol
You can order on Amazon
Thanks for this explanation now I can defend my project well
Hello,
We are happy you found this useful. For more information on home building you can visit our TH-cam channel th-cam.com/video/71PJC4j1FHU/w-d-xo.html .
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Team UltraTech.
Well explain and simplified. Thanks ultra pls keep educating the world with all ur heart. I enjoyed your video.
This was helpful.Thank you so much.
Hi,
We're glad you found this helpful! Feel free to share it with your friends and family, so they too can benefit from expert guidance on home-building queries. For more information, visit our TH-cam channel: th-cam.com/users/UltraTechCementLimited
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Team UltraTech
AWESOME, now I can go take my GC exam!!! :)
Nice practical i appreciate you sir
Very nice explanation this videos
Exaplained very simply. thankyou
You're welcome. Hope you found the above information useful. 😊
@@UltraTechCementLimitedyes, it is very useful for me.
We are happy you found this useful. For more information on the home building, you can visit our TH-cam channel - th-cam.com/video/71PJC4j1FHU/w-d-xo.html.
Regards,
Team UltraTech
rotate of the cone to create collapsible and shear slump should be lifting gratually
Good stuff engineer. Well explained
Hi Michael,
We are happy you found this useful. For more information on the home building, you can visit our TH-cam channel bit.ly/3kimz2w.
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Team UltraTech.
Thank you DCRM!
Amazing, clean explanation .
I watched a 5 hour pour of a hotel foundation in Spain and not one slump test was undertaken.
Goodluck on that building! 😅
Useful information.. appreciated
Hello,
We are happy you found this useful. For more information on home building you can visit our TH-cam channel th-cam.com/users/UltraTechCementLimited Regards,
Team UltraTech.
it is a good work guys pls do the exact procedure for consistency, initial and final setting time of cement
Thank you sir..
Clear explanation...
nice video 👍
Hi,
We're glad you found this helpful! Feel free to share it with your friends and family, so they too can benefit from expert guidance on home-building queries. For more information, visit our TH-cam channel: th-cam.com/users/UltraTechCementLimited
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Team UltraTech
ATSM C143: "Immediately remove the mold by raising the mold in a steady, vertical direction. *** There should
be no lateral or torsional motion of the mold while lifting. ***"
Yep, i don't know what code does this channel is following.
th-cam.com/video/eymDP1_oHbo/w-d-xo.html
We need more videos related to this and also construction sites
Very help full
The slump mold is filled in three layers (ACI grade 1). Not in four layers like you said. Sorry wrong.
Dear.....they're perfect.check your basics once again.
Interesting video
Hello,
We are happy you found this useful. For more information on home building you can visit our TH-cam channel th-cam.com/users/UltraTechCementLimited
Regards,
Team UltraTech
Nice explanation
Hello Tanjim, we are glad you think this, for more information about us, please do visit www.ultratechcement.com . Regards, Team UltraTech.
no rotation allowed when lifting the cone see ASTM C143
Carefully in a vertical direction. By a steady upward lift with no lateral or torsional motion.
What's the right measurements in difference of slump and the original height??
Hi,
Thank you for reaching out to us. The slump is measured as the difference between the original height of the cone (300 mm) and the height of the concrete after it slumps. For example, if the original height is 300 mm and the slumped height is 200 mm, the slump would be 100 mm. This method aligns with the standard procedure for a slump test. If you need further assistance, please contact us via toll-free no 18002103311
Regards,
Team UltraTech
*Point To be Noted:-* Slump length measured from UP Side 🙂
very good voice and pronunciation
RIST walei 🙌🏻
Why is it undesirable for a shear or collapsable slump test? Its great to know what is preferred but equally important to understand why
I get that but what are the dangers when contractors the slump test fails and contractors use it anyways. I say this because many contractors provide shotty work. In what ways does it effect the integrity of the concrete? Are their any telling signs?
Aside from affecting ease of work (pouring using pumpcrete tend to be difficult if slump is too low), it may result to severe honeycombing on structural members, reducing integrity of the structure.
Slump cone is rotating while lifting the slump cone. it is lifted in vertically and check the measurement.
Very helpful of concrete workability test
ok.. what causes shear and collapsible slump and is it best for lantern or beams..because concrete needs for such work should be collapsible so that it may fill up all air bubbles in concrete
Hi Abid,
Thank you for your query. Our experts will answer your question shortly.
Meanwhile, you can watch homebuilding-related videos here - th-cam.com/users/UltraTechCementLimited
Regards,
Team UltraTech
Hello,
We would like to inform you that shear or collapse slumps in concrete are due to the majorly wrong proportioning of aggregates, higher water-cement ratio, and maybe the wrong dosage of admixture. Hope this solves your query.
Regards,
Team UltraTech
Thanks
very good lecture.
The slump cone shall be removed by raising it vertically, slowly and carefully, in two to five seconds, in such a manner as to impart minimum lateral or torsional movement to the concrete. (extracted from Construction Standard of HKSAR)
You guys did twist the cone
why the slump cone is conical ?
Nice
Very nice advice
Why was no information given on how much slump is ideal?
What should be the ideal length?
Hi,
Thank you for your query. Our experts will answer your questions shortly.
Meanwhile, you can watch our Method of Concrete Curing video here -
th-cam.com/video/DPusfKeIoM4/w-d-xo.html
Regards,
Team UltraTech
well explanation sir thank you......
I actually picked out a real practical in slump test. But I never got the accepted height or ranges of heights that are good
Great information here. Thank you so much sir
How do you analyze the results after measuring the slump
pick up true slump results as ideal choice.
slump cone also out of calibration and slump should not be rotate while lifting
10
and for the blows not go proper (final layer)
thank you so much sir very help full
walal seetahey good job hadan halkan wax ka baraneysid ila soo xiriir hada u baahatid in si fcn usii fahantid.Hadii ad ACI test sameyneysid ninkan qaabkisa ha raacin waayo waa khalad waadna ku dhaceysa taas ogow.
Not four layers, three layers and the cone should not be rotated
Slump test should be in four layers
ASTM C143
requires 3 layers
Zeeshan Khan how much be should minimum and minimum slump??
Pooja Patel Should in be three layers
How much mm should be
Very helpful...thanq
nice
The ease with which Ultra-tech explains the concept and things is called workability of ultra-Tech...
tamp free fall?
What is the IS code used
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Great work
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What is the procedure for Slump test with Egg shell powder as 10% replacement of cement??
Dear Sakshat, please message us your location in detail, our team will get back to you.
@@UltraTechCementLimitedWhatsapp Number please
every layer should be tamped 25 times, not stroked 25 times. Tamping method is wrong. This is the common mistake in most of the sites. At least ultratech should do properly.
hi. just wondering. If the cone if filled, should the cone be lifted right away it is filled or should i wait for 1 or 2 minutes? thanks
once you filled the cone you should lift it right away
thank you!
gud
I started hallow bricks unit so i want this mixture
Hello Pampapathi, could you please elaborate your query?
Regards,
Team UltraTech.
Is it 1/4 of the ht or the volume? Thanks for the reply
Height
I want this
Wow from mechanical engineering
simply superb........
Sir please tell that how optimum moisture content is achieved on the site
what is the range of slump height for a concrete to have a good workability?
50 TO 75 MM
Great
the tamp should be freely drop..not force it by hand..
Why frustrum of cone shape is preferred for slump test please explain
to maintain the potential energy of the concrete along the height
Thanks sir
good test
You’d fail hands on portion of ACI test if you followed this procedure.
Now 3 layers... New code.. some one told please reply any one three layers or four layers
I had done in lab of BCE Bhagalpur
Which code dictates that the slump cone is filled in 4 layers?
IS 516, IS 1199
Nice information
I am getting zero slump . what should I do? please help
You need to dampen the cone and the base plate before putting any concrete in. You don’t clean the concrete off the top with a trowel. You use the tamping rod in a screeting motion. You don’t twist the cone as you pull up. It must be straight. Also you don’t measure to the highest point of the concrete. You measure to the displaced center of the concrete. Read the ASTM standard please.
Okay boss. If all would have done as you said, what would be the difference of slump in two different method? It is wise to be a practical rather to to find fault with anything...
I agree with you with the dampening, the use of the tamping rod to level off the concrete and the not twisting. In the UK though the standard specifies that you measure to the highest point. Now I want to read the ASTM standard and compare :)
@@nirmalendukargupta201 Doing it with a dry cone and baseplate and twisting it while lifting will give a lower slump value. Unscrupulous site technicians have been known to deliberately do it this way to "cheat" the test and make an otherwise too liquid concrete pass
slump should not be rotate while lifting
Ho
What test method is this? you are not following ASTM C143 or AASHTO T119
BL Lippe. .
Blippi
We just rejected ultratech concrete using the same test
Sir, what are the slump values for different work like road , slab , columns etc.???
5 inch
In Australia for normal concrete we mix 20mpa 20mm aggregate 80 mm slump when it is being tested . A wetting agent can be added after the test to make the concrete easier to work .
Pls explain all physical and chemical test of purpose and pls explain Tamil
Dear Ashok, could you please elaborate on your query?
I need video or book in tamil language to understand the chemical and physical test for concrete (fresh concrete and harden concrete) and all raw materials of concrete
Dear Ashok, as of now we don't
have any literature in Tamil. Please message us your contact details, our technical team will solve your query.
How to do it according to astm c143 standard
fantastic work
Please vee-bee cosistometer test ke baare me bataye
Best quality
Thank you
How to take the water content???
temperature of concerte. Maximum and minimum. Give me answer.
Maxium 28 minimum 32
Structure concrete maximum 32°