BJM (Block Jointing Mortar)

Product Description:

MYMIX – BJM(Block Jointing Mortar)" is a thin bed, high strength, pre-mixed, quality assured mortar 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. "MYMIX - BJM(Block Jointing Mortar)" 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
  • AAC Blocks
  • Cement mortar blocks / bricks
  • Concrete hollow blocks
  • Fly ash bricks

How to Apply:

  • Add 25 kg of “MYMIX‐BJM (Block Jointing Mortar)” to approx. 6.5 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 Details: (As per IS 15477 & ANSI 118.4)

S.No Testing Parameter Specification
1BJM – Mixing Ratio20-25% Approx: by weight
2Product ColourGrey
3WorkabilityEasy mixing and Self curing
4ApplicationBetter application and easy spreading
5Open Time @ 23 –270 C30 – 45 minutes
6Pot life3 hours
7Setting Time @ 23 – 270 C8 hours
8Shear adhesion
ADry condition after 24 hrs3.0 KN
BDry Condition after 14 days11.80 KN
CHeat Ageing Condition8.5 KN
DWet condition7.0 KN
9Tensile Adhesion
ADry Condition1350 N
BWet Condition1050 N


  • 25 kg bag and Project packing of 40 kg bag 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.