Answer / balamurugan r

In order to pump a concrete using pump machine to place it
in the final position, it should have the following properties,
1.It should be M20 grade or higher
2.It should have high workability say slump value 90-120mm.
3.It should have well graded aggregates and more cement content.
4.Minimum cement content for this kind of concrete will
around 325kg/cum.

Answer / lalit madnawat

Pumpable concrete means
easy to workabale /having
high workability.
&
non pumpable concrete
means hard to workable/low
workability and low w/c
ratio.

Answer / er. amar

Pumpable concrete means the concrete mix having small size
of aggregates and having proportions of water and cement mix
in proper quantity but non pumpable has big size of
aggregates which sometimes during traveling through pipes
gets stuck at some place and due to which it creates problem
for concreting any structure.

Answer / ganesh

Dear one,
We are using pump in some site where we can not transit the material(concrete)l to work place, concrete used pore in the pump machine and transit rcc via pipe,
slump value should be 120mm minimum for Rcc workability,

on what basis the partial factor of safety are decided? form the load combinations

0 Answers  

---

what is unit weight of steel

11 Answers   RRB,

---

suppose we have a tendency to make a hole on the surface of the simple supported beam, than where we goes to make it?

0 Answers  

---

Which concrete grade and cement/water ratio is the best?

1 Answers   College School Exams Tests,

---

Minimum sizes of beam and coloumn

2 Answers   bscpl,

---

How many pyramid in egypt?

0 Answers  

---

how to estimate material requirement for an area of house in square feet?

0 Answers  

---

Difference between the setting time and hardenin time of concrete

5 Answers  

---

How many binding wire is use in arrangement of 25mt steel

2 Answers  

---

Name four load bearing elements (structural elements) in a framed building

1 Answers  

---

i) Distinguish between Theodolite and dumpy Level? (Marks-8) ii)Distinguish between Viscous and Turbulent flow? (Marks-8) iii) Distinguish between nominal and design mix? iv) What is standard sand? v) Explain the term plane stress? Vi) Differentiate between principal plane and principal axis? Vii) write short notes on Elastic limit of structural steel? viii) Write short notes on stress concentration? ix) write short notes on "Grading of Sand" ? x) How many grades of concrete are there under standard concrete?

0 Answers   Public Service Commission,

---

Is there is any formula for calculate the correct length of rebar while it bending in 45 degree/90 degree and cranking???

2 Answers   L&T, NBCC,

---