Civil Engineering - Concrete Technology - Discussion

It is the maximum limit or minimum limit?

Is it standard limit?

If we want to transport the concrete for 100 mt then how can we do it?

I think this answer is not appropriate. Because I personally done concreting by pump more then 400 metre from pouring location. So this is just a thumb rule type of concept which is made that before 10-20 years may be.

Yes, wrong question we have done concrete in pump wherever it is inaccessible.

Question is wrong there is no such standard limit even pumps pumping concrete upto 1 km are available.

You are all people wrong because the pump transfer 1 km and more of it.

50 m only is the right answer. But it is not in the given option.

Two types of concrete pumps are used:

Direct-acting, horizontal piston type with semi-rotary valves set to permit always the passage of the largest aggregate particles. This type of pump can cover a horizontal distance of 1000 m and a vertical distance of 120 m. The concrete is fed in by gravity and is also partially sucked in during the suction stroke. The valves open and close with definite pauses so that concrete moves in a series of impulses, but the pipe always remains full. These pumps are capable of pumping 130 m3 of concrete per hour with 8-inch pipes.

I totally agree with your statement @Abhishek Paliwal.