Vacuum Concrete

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Vacuum Concrete


When hardening of concrete takes place excess water should be removed otherwise it will reduce concrete strength. So Vacuum concrete the type of concrete in which the excess water is removed for improving concrete strength. The water is removed by use of vacuum mats connected to a vacuum pump.
Water cement ratio is important to achieve higher strength and Workability is also important for concrete, so it can be placed in the formwork easily without honeycombing.
When Workability requirement is over this excess water will evaporate and leave capillary pores in the concrete and that leads to into high permeability and less strength in the concrete. Therefore, workability and high strength don’t go together as their requirements are contradictory to each other.
This technique is such way unique that it can provide to fulfil these two requirement at the same time. This technique is used in industrial floors, parking lots and deck slabs of bridges etc. 

This can be done by vacuum dewatering and by this there is a noticeable reduction in water-cement ratio and that will increase concrete. This can be done more on the surface and there it is required the most.

For dewatering there are four components required.

Ø  Vacuum Pump
Ø  Water Separator
Ø  Filtering Pad
Ø  Screed board vibrator

Advantages of Vacuum Concreting

Ø  Reduction in water-cement ratio will improve compressive strength and lower the permeability.
Ø  It improves the water resistance of concrete surface.
Ø  Workability and high strength will achieve simultaneously.
Ø  Smooth and plain surface can be achieved after vacuum dewatering.
Ø  Surface can be put to use early and formwork can be removed early.

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Blog written by

Shruti Doshi
Technical Officer – Sanghi Cement & Blogger
shruti.doshi@sanghicement.com
shrutidoshi.1492@gmail.com

Blog Managed by

Nirav Pandya
Digital Marketing Officer – Sanghi Cement
nirav.pandya@sanghicement.com

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