Block Adhesive

Dudhi Block Adhesive is polymer modified adhesive suitable for block work in interior and exterior situations. It is designed for thin bed fixing of blocks of various kinds including light weight blocks. It contains selected graded dry sand, grey cement and imported polymers to improve workability, water retention, durability and adhesion.

Specification

Parameter	Dudhi Block Adhesive
Pot Life	60 -120 minutes
Hard Dry	20 — 25 hrs
Appearance	Grey Powder
Curing	No additional water curing is required
Tensile Adhesion Strength After 28 Days	0.5 — 1 N/mm²
Compressive Strength after 28 Days	10 -15 N/mm²
Coverage	4-5 sq.tt./kg for 3mm thickness
Average Thickness	3 mm For Block Size 600X200X150 mm
Water Demand	25 - 30%
Ingredients	Cement+ Graded Sand+ Additives+ Polymer
Shelf Life (Months)	6 Months in sealed bags. (Store in cool and dry place)
Packing Size	20 Kg & 40 Kg
Density	1400 - 1500 kg/m³
Standard	Complies the specification of IS-15477:2004

Comparison Chart

Dudhi Block Adhesive	Conventional Mortar
Approx. Rs. 3.5/sq. ft.	Cement (0.5 kg @ Rs 300 per bag) = Rs. 3 + Sand (0.045cft @ Rs per cft) = Rs. 1.80 Total = Rs. 4.8 per sq. ft.
Fast Application	Not Possible
Plastering possible after 24 hours	Minimum 7 days curing required
Consistent quality due to computerised mixing and tested raw material	Manual mixing and not possible to test every batch
High bond strength (almost 5 times more than conventional mortar)	Not possible due to difference in properties of blocks and mortar
Negligible shrinkage cracks	More shrinkage cracks
Easy handling and storage	Difficult to keep stock of different components and high wastage

About Material

Consumption of Material

Consumption Per mm/ Per Sq. Ft.- 0.100 kg
Coverage 13mm Thickness 30sq-ft/40 kg bag, 19 sq-ft/25 kg bag

Features & Benefits

Eliminates two-step process of Sand Cement Plaster and POP punning
Doesn’t require water curing
No shrinkage cracks
Non-combustible (when tested in accordance with BS: 476: part 4:1970), therefore a good form of
thermal protection to the building structure.
Use of light weight aggregates in the plaster mix help to improve Low thermal conductivity (0.25
W/m-K) as compared to Sand Cement Plaster (0.72 W/m-K) ** keeps room cooler in summer and
warmer in winter; saving in energy cost
The water absorption as per DIN EN 520 is less < 10%
Excellent Capillary
Water absorption coefficient test method —- BS EN 1015-18.

Available Sizes

25 kg and 40 kg

Identification & Packing

Dudhi Gypsum (Brick Solution) (Moisture Resistant) is packed in PP bags. The outer layer of the bag is printed with the product image, batch number, date of manufacturing, correspondence address and application instructions.

Backed by Superior Service

Technical service team offers regular site training to use tools and technology to improve
productivity.
Intermediate site inspections and feedback.
Recommend trained application Team.
Largely distributed manufacturing capacity.

Testing Standards

Confirms to IS 2547 (Part |) — 1976 for physical & chemical characteristics
Confirms to IS 2547 (Part Il) — 1976 for physical characteristics
HSN Code : 252020, GST : 5%

Certification:

Conforms and Certified to IS 2547: Part 1 and 2 of “The Bureau of Indian Standard” as per
licence number CML-8400019909
Meets standards of Green Pro certification and qualifies as green product.

Storage & Handling

Dudhi Gypsum (Brick Solution) (Moisture Resistant) is supplied in 4OKg bags. The dimensions of the bag ensure that a well-filled appearance is presented when filled and the bags can be stacked on a pallet in a stable and well-stacked array. Bags should be stored dry, as absorption of water shortens the setting time, causes set lumps to (*) form in the bags and may reduce the strength of the set plasterwork. No hooks or any sharp tools should be used to carry bags from one location to another.

Application Procedure

Surface Preparation

The surface of masonry units should be slightly wet prior to application of Dudhi Block Adhesive.
The masonry units should be clean, with no loose particles or dust for better bonding.

Mixing

It is very important that Dudhi Block Adhesive is mixed with water thoroughly before use. It is advisable to use a mechanical stirrer for uniform mixing to save time, labour and for maximum workability effectiveness.
Use a clean vessel/bucket which does not have any hole or cut and add some water in the empty vessel to ensure no powder gets stuck at the bottom of the vessel and put required quantity of Dudhi Block Adhesive.
Mixing Ratio – depending on the thickness of the product to be applied, add approximately 25-30% of the clean potable water. Water is added in stages to get a smooth, uniform, workable mix. Allow ample time for initial mixing.
Ensure that no powder is left unmixed at the bottom of the vessel.
The jointing mortar is now ready for application.

Application Methodology

Layout the wall where Dudhi Block Adhesive is to be used and mark openings like door, windows or any architectural appurtenances.
Apply a thin uniform layer of Dudhi Block Adhesive, 3-4 mm thick, on the clean & leveled surface of masonry units using proper trowel.
Place the next course of masonry units on the evenly laid jointing mortar bed in proper line & level. Each masonry unit should be properly bedded and set in position by gently pressing with the handle of a trowel.
After placing the first unit, apply Dudhi Block Adhesive of same thickness on both the sides of the unit, keeping continuous check for the line & level.
Inside face of the masonry unit should be buttered with mortar before the next unit is laid and pressed against it especially in case of bricks.
Clean the excess material immediately, if any. Continue the procedure for the entire masonry work.

Precautions During Usage

Though Dudhi Block Adhesive contains no toxic material, still care should be taken to avoid dust inhalation while mixing and handling. In case of contact with eyes or face, wash with plenty of clean water.
Keep it in a dry place and out of reach of children.
Persons who are allergic to cement should take proper precautions before use.