Nitobond SBR Price in Bangladesh

Description

Description:
Nitobond SBR is a modified styrene butadiene rubber emulsion which is supplied as a ready to use white liquid. It is designed to improve the qualities of site-batched cementitious mortars and slurries. Being resistant to hydrolysis, it is ideal for internal and external applications in conjunction with cement.

Uses:
For improving and bonding concrete repair mortars, cementitious floor toppings and screeds, waterproof renders and cementitious slurries. Cementitious mortars are alkaline in nature and will protect embedded steel reinforcement. Mortars produced with Nitobond SBR may be used for horizontal, vertical and overhead repair work. Nitobond SBR may also be used to form a bonding agent for slip bricks, ceramic tiles, etc.

Advantages:

• Excellent bond to concrete, masonry, stonework, plaster and blockwork
• Improved tensile and flexural properties allow thin applications
• Single component liquid can be easily gauged as required
• Improves cohesion and workability
• Improves mortars to provide waterproof repairs, renders
  and toppings which are highly resistant to freeze/thaw cycling
• Contains no chloride admixtures

Technical Support:
Parchem offers a comprehensive range of high-performance, high-quality concrete repair and construction products. In
addition, Parchem offers a technical support package to specifiers, end-users and contractors, as well as on-site
technical assistance.

Design Criteria:
The application parameters for mortars modified by the use of Nitobond SBR will differ depending on the actual mix
design used. Generally, however, Nitobond SBR mortars can be applied in sections up to 40 mm thickness in horizontal locations and up to 15 mm in vertical locations.

The thickness achievable in overhead locations without the use of formwork is largely dependent on the profile of the substrate. Vertical and overhead sections greater than those stated above may be built up in layers but may sometimes be possible in a single application dependent on the actual size and configuration of the repair. area, and the volume of any exposed reinforcing steel.

Nitobond SBR mortars should not be applied at less than 6 mm thickness. Thicknesses up to 40 mm in a single application can be achieved by the use of formwork. Consult your local Parchem office for further information.

Specification Clauses:
Polymer bonding aid and mortar additive the polymer bonding aid and site-batched mortar shall be modified by the use of Nitobond SBR, a single component styrene butadiene rubber emulsion.

Application Instructions
Preparation
Saw cut or cut back the extremities of the repair locations to a depth of at least 10 mm to avoid featheredging and to
provide a square edge. Break out the complete repair area to a minimum depth of 6 mm up to the sawn edge.

Clean the surface and remove any dust, unsound or contaminated material, plaster, oil, paint, grease, corrosion deposits or algae. Where breaking out is not required, roughen the surface and remove any laitance by light scabbling or grit-blasting.

Oil and grease deposits should be removed by steam cleaning, detergent scrubbing or the use of a proprietary degreaser. The effectiveness of decontamination should then be assessed by a pull-off test.

Expose fully any corroded steel in the repair area and remove all loose scale and corrosion deposits. Steel should be cleaned to a bright condition paying particular attention to the back of exposed steel bars. Grit-blasting is recommended for this process.

Where corrosion has occurred due to the presence of chlorides, the steel should be high-pressure washed with clean water immediately after grit-blasting to remove corrosion products from pits and imperfections within its surface.

Reinforcing steel priming:
Apply 1 full coat of Nitoprime Zinc rich to any exposed steel reinforcement and allow to dry before continuing. If any doubt exists about having achieved an unbroken coating, a second application should be made and, again, allowed to dry before continuing.

Cleaning
Nitobond SBR should be removed from tools, equipment and mixers with clean water immediately after use. Cured material can only be removed mechanically

Storage:
All products have a shelf life of 12 months if kept in a dry store in the original, unopened bags or packs. If stored at high temperatures and/or high humidity conditions the shelf life may be reduced. Nitobond SBR and Nitobond AR should
be protected from frost.