KOTA STONE FLOORING. ITS PROPERTIES, APPLICATION, ADVANTAGES AND DISADVANTAGES


  • Kota stones are fine-grained variety of limestone. They are naturally available and Quarried at Kota district of Rajasthan, India, it is one of the most preferred building stone for exteriors, driveways, pathways, corridors, balconies, etc cause of its good resistance against abrasion and wear. It also finds its application in flooring of chemical industries for its inertness towards a large number of chemicals. 
  • These stones are available in different finishes (Smooth and rough) and they are available in Green, Black, Brown, Beige, Grey and Pink color. Among them rich greenish blue and brown are most general used material.

Properties of kota stone
  • The compressive strength of kota is 20 to 25 N/mm2.
  • The specific gravity is 2.5 to 2.8.
  • It has low porosity
  • They have good resistance to abrasion and wear.


Application procedure
  • Mortar of specified mix (usually 1:4 Cement : Coarse Sand) is prepared and spread under the area of each slab for the indicated thickness (usually 20mm). 
  • The cleaned slab is laid on top, pressed and tapped with a wooden mallet in order to bring in same level of the adjoining slab. 
  • The slab is then lifted and placed aside. Check its diagonal prior to lay down on mortar.
  • The top surface of the mortar is made uniform by filling up the hollows with fresh mortar and is allowed to harden.It should be flat surface.
  • The mortar is then topped with cement slurry of honey like consistency at the rate of 4.4 kg of cement per square meter. 
  • The slab to be laid is lowered gently back in its position. Subsequent slabs are laid in similar manner and the excess cement slurry coming out of the joints of the slab is cleaned off.


Advantages

  • Kota Stones have wide application in exterior works for its non-porous, non-absorbent, tough and homogenous properties and is an excellent building stones for both humid and freezing regions.
  • Availability of the stones in slab and tile form makes it convenient to achieve different pattern of flooring.
  • It gives rich aesthetics to both interior and exterior flooring and is cheaper than other stones used in similar application.
  • High customization can be achieved because of its availability in sizes of 30×30, 40×40, 30×60, 40×60, 60×60, 50 x50, 55×55, and 60×90 centimetres.

Disadvantages

  • Unlike granite or marble Kota stone slabs are not available in bigger sizes. This is because of its fragile nature.
  • On a longer run Kota stones flakes out. However if well maintained and polished regularly the flaking of stones can be intercepted to a greater extent.
  • The finished surface is not as glossy or luminous as that of marble and granite.











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