Dear Friends ,
Have you ever wondered on this issue ?
” What happens if we test a wet cube in a compressive strength testing machine?”
Would you not like to find out what shall heppen if we do not dry the concrete specimen after 28 days and just test it under the same wet condition ?
You can find out the correct answer at this link :
By the way , how many of you have actually seen the concrete cubes being cast at site ?
Not seen ?
Well, here is the link for you to watch the cubesbeing cast at site for testing :
After the 6 cubes are cast on the day of the concrete, 3 cubes are tested on the 7th day [ Should not give a strength less than 65% of the characterstics strength ] and remaining 3 cubes are tested on the 28th day.[100% of characterstics strength].
Would you like to see how the concrete cubes are actually tested in the laboratory ?
Here is the link for you :
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Dear Friends ,
You are able to answer this question ?
The prestressed slab you are seeing in this picture is of Grade 40.
We have seen this earlier . Right ?
Thats why it is necessary for you to keep referring to your notes on a regular basis always.
Any way , if you would like to find out How much cement, sand, and aggregate were required for an M 40 grade with a 30% replacement of fly ash , you can read my answer on this link :
And , by the way , do you know , would like to learn how to find out how much ingredients for the concrete once again ?
First you should see this video. This explain what is the meaning of the term grade and it also explains how to convert a grade into the proportion of materials :
Then you would like to see the calculations for finding out the materials for 1 cum of concrete :
If you know all this but are not aware as to what is meant by the grade of cement , then you must also see this video :
Ok then friends, please see these videos and upgrade or refresh your skills.
If you have not yet subscribed the You tube channel , please do subscribe it today itself.
This is the link for you :
Take care and have a good night.
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Hello Friends ,
Enjoying the day ?
Every construction person needs to know these :
- How to find out the grade of concrete if the ratio is known
- How to find the ratio if the grade is given.
Just spend 12 minutes of your busy time in watching the following video and you shall know the trick. Learn through the simple to follow steps and master the technique.
By the way , if you want to know more knowledge on construction , why not join the
On Line Courses for Civil Engineers ?
You learn many difficult topics from the comfort of your home.
easy to follow video leactures are available in each module.
Write to me today itself for more details :
You can use the form here for directly connecting with me.
Today let’s see how to carry out the mix design. I’d like to quote a good answer on quora.
Knowledge of this topic is very important for every construction personnel.
Read this post carefully.
What is the mix proportions for the M-80 Grade concrete, and where is it used? Let’s see how this subject has been dealt with.
On site, we need to cast specimen cubes for testing the concrete. This post explains how to remember the size and how many cubes are tested and at how much duration?
How many cube specimens are used to find the maximum strength in concrete, and why? by Santosh Kulkarni https://www.quora.com/How-many-cube-specimens-are-used-to-find-the-maximum-strength-in-concrete-and-why/answer/Santosh-Kulkarni-37?share=31a02519&srid=zM5g
This practice is going to be quite useful to you at the site.
Even if this question is asked during the interview,you can be confident now.
Please read this carefully and remember the trick.
One cubic meter of cement concrete mixture of ratio 1:1.5:2 then what will be the quantity of c… by Santosh Kulkarni https://www.quora.com/One-cubic-meter-of-cement-concrete-mixture-of-ratio-1-1-5-2-then-what-will-be-the-quantity-of-cement-sand-and-aggregate/answer/Santosh-Kulkarni-37?share=eb34650d&srid=zM5g