Answer / mitesh patel

# Floors in factories and industries have concrete being the
most versatile of flooring material, has been in use for a
long time. To overcome the deficiencies of concrete a system
was devised to improve the properties of such concrete
floors. This system is "Vacuum Dewatered Floors.
Process:
In this system, concrete is poured in place & vibrated with
a poker vibrator. Then a screed vibrator is run over the
surface, supported on channel shuttering spaced 4.0 meters
apart. The screed vibrator is run twice to achieve optimum
compaction & leveling. After this a system of lower mats &
top mat is laid on the green concrete & this is attached to
a vacuum pump. This draws out excess water.
Benefits:
1. Compressive strength of floor increases by upto 60%
2. Tensile strength increases by @ 70%
3. Cement consumption is reduced to the extent of 40%, no
cement is required separately for finishing the surface.
4. Abrasion resistance of the floor increases by @ 60%
resulting in less wear and rear of the floor surface.
5. Shrinkage of concrete is reduced and floor wraps less.

Answer / sureshpittas

vdf flooring means Vaccum Dewatering flooring... vdf
flooring is used for smooth surface area of
flooring..Generally vdf flooring used for parking area why
beacause it easy to move freely .vdf flooring is not only
for parking areas but also we can use any floors... And we
can use M25, M30 M35, M40 Concrete...and Hardener bag must
be used for 1SQMETER -3kgs should be used compulsory.

Answer / p.simhachalam

sir how to repair the vdf top surface ,if in case damaged

When you received a RA Bill of contractor at HO duly checked and certified by Site In-charge, How to know at a glance it is complete in order, do have any one checklist format in this regard.

2 Answers   JMD Group,

---

the min diameter of steel used in footing are

2 Answers  

---

I want to join bhel because

0 Answers  

---

at what pressure ply-wood is obtained by gluing wooden sheets

0 Answers  

---

What will be weight of 0.5mm GI sheet per sq.ft?

1 Answers  

---

What is Time period of a building and its relation with frequency ?

0 Answers  

---

in the earthquqke the profile of water on dam is parabolic or not

0 Answers  

---

what is the actual productivity of carpentor,fitter,masson for brickwork and masson for plaster etc

4 Answers  

---

What is the order of MIX Design of concrete? a)Cement :Stone:Sand b)Cement :Fine aggregate :Coarse Aggregate?

2 Answers  

---

How to determine dia of steel for use in column,slab etc. i mean how to calculate the diameter of steel which is to be used in structures.

0 Answers   L&T,

---

What is the differential length of steel reinforcement? What is the over lap length of steel in different grades of concrete?

1 Answers   L&T,

---

What is the difference between linear dimension and aligned dimension?

0 Answers  

---