Product Details

MYK Arment® ReArm SBR 45

Cement Mortar & Screed Modifier cum Bonding Agent

Product Overview

MYK Arment® ReArm SBR 45 is a modified Styrene Butadiene Rubber (SBR) emulsion designed for use as a bonding agent and cement mortar modifier.

It significantly improves bond strength, waterproofing, flexibility, and durability of cementitious systems and is ideal for concrete repair, screeds, plasters, and patching mortars, including repairs of damaged and spalled concrete.

Uses & Applications

• Concrete repair mortars and adhesive screeds

• Bonding and strengthening of floor toppings

• Repair of worn, damaged, and spalled concrete

• Large crack repairs

• Polymer-modified floor screeds

• Smooth, dense, watertight external plaster rendering

• Thin-layer patching mortars

• Tile fixing mortars

• Masonry mortars

Features & Benefits

• Simple application; suitable for thin sections

• Single-component system

• Excellent bond to concrete, plaster, masonry, stonework

• Weather-resistant for improved durability

• Impermeable to chlorides and harmful agents

• Produces watertight screeds and plasters

• Improves tensile, adhesion, and flexural strength

• Compatible with all hydraulic cements

• Economical and easy to use

• Improves cohesion and workability

• High resistance to freeze–thaw cycles

Application Methodology

Step 1: Surface Preparation

• Ensure substrate is clean, sound, and free from dust, grease, coatings, and loose particles

• Remove all unsound concrete until sound substrate is reached

• Seal and cure cracks and potholes properly

• Mechanically roughen smooth surfaces (scrabbling, needle gun, grit blasting)

• Clean corroded reinforcement to a bright metal finish

• Rust removal using emery cloth, grit blasting, or approved rust remover/converter is recommended

Step 2: Substrate Priming

• Thoroughly soak substrate with clean water and remove excess

• Prepare slurry primer:
  1 part ReArm SBR 45 : 1 part water : 3 parts fresh cement

• Mix cement slowly into the liquid to achieve smooth consistency

• Scrub slurry well into the substrate

• Apply repair mortar/render while slurry is still wet

• If slurry dries, remove and re-prime before continuing

For permanently damp substrates or special conditions, epoxy bonding primer may be required.

Step 3: Mixing Instructions

• Add ReArm SBR 45 to cement/mortar/concrete/grout as per application

• Mixing should preferably be done by volume

• For waterproofing slurry or bonding coat, add cement into polymer for consistent mix

Step 4: Curing & Finishing

Curing

• Cure immediately after finishing using proper cement curing practices

• Use curing compounds or polythene sheets in harsh drying conditions

Finishing

• Finish with steel, plastic, or wood float, or damp sponge

• Avoid over-working the surface

Packaging

• 5 Liter

• 20 Liter

• 200 Liter

Storage & Shelf Life

• Shelf Life: 12 months

• Store in sealed containers, in a cool, dry, shaded area

Health & Safety

• Avoid contact with skin and eyes

• Do not ingest

• Use protective gloves and goggles during handling