BJM (Block Jointing Mortar)

Product Detail:

  • MYMIX – BJM is a thin‐bed, high strength, pre‐mixed mortar
  • It is comprising of Portland cement, specially graded sand and admixture
  • It is specially formulated and easily applied
  • Giving a higher bonding with significantly higher air entraining properties
  • It is a masonry mortar for use in laying bricks, block or stone
  • It replaces conventional jointing mortar of 12‐18mm thickness with highly versatile 3mm thickness mortar


  • Quick setting proprietary mortar essentially “ glues “ the block together and the next course is ready to lay within a very short time
  • Extreme durability eliminates future maintains
  • Non‐metallic doesn’t rust out, will not discolour wall
  • Ready mixed mineral based products designed for new construction as well as renovation purpose
  • Being premixed, it saves considerable time and labour
  • It doesn’t cause damage to eco system
  • Water resistant to limit efflorescence
  • Being premixed, the raw materials are so chosen and processed that inhibits efflorescence


Suitable Substrates:

  • Concrete Blocks
  • Cement mortar blocks / bricks
  • Concrete hollow blocks
  • AAC Blocks
  • Fly ash bricks

How to Apply:

  • Add 25 kg of “MYMIX‐BJM (Block Jointing Mortar)” to approx. 6.5 ltrs. To 7.5 ltrs. Of clean tap water and stir properly for 5 minute by hand or an electric stirrer to get a smooth and homogeneous mixture
  • After stirring wait for 5 minutes
  • Apply a thin uniform layer of mortar on clean block with a mason’s trowel to make an even joint layer of 3 ‐4 mm thickness
  • Remove excess material if any from the joints
  • The proper preparation of the surface will make the fixing easier and quicker ensuring a better finish.

Technical Detail: (As per IS 15477 & ANSI 118.4)

S.No Testing Parameters Specification
1BJM – Mixing Ratio6.5 to 7.5 litre water for 25 kg Material

Approx: 25–30% by weight
2Product ColourGrey
3WorkabilityEasy mixing and Self curing
4ApplicationBetter application and easy shpreading
5Open Time @ 23 –27° C30 – 45 minutes
6Pot life3 hours
7Setting Time @ 23 – 27°C8 hours
8Trafficable Time24 hours
9Coverage for 3 mm bed thickness65–75 Sq – Ft / per 25 kg bag
10Shear Adhesion:
ADry Condition after 24 hrs3.0 KN
BDry condition after 14 days11.80 KN
CHeat Ageing Condition8.5 KN
DWet condition7.0 KN
11Tensile Adhesion
ADry Condition1350 N
BWet condition1050 N


  • 25 kg. Project packing of 40 kg size is available on demand

Shelf Life:

  • Factory sealed bags are best before 12 months from the date of manufacturing in unopened condition stored in dry area.