Fosroc - Renderoc HB40

Uses

For the reinstatement of large areas of reinforced concrete where low permeability characteristics are required and where higher compressive strength is an important consideration. Renderoc HB40 has been engineered for the repair of columns and beams but, because of its relatively low fresh wet density, is also suitable for soffits and other overhead repair work. The mortar can also be used for small, localised patch repairs.

Where compatibility with lower strength concrete is required, but low permeability and high-build characteristics are important, Renderoc HB25 should be used. For higher strengths Renderoc HB70 should be used.

Renderoc HB40 is approved for use with Galvashield XP, with a resistivity < 15,000 Ω cm @ 28 days.

Advantages

• Maximum compatibility with concrete of compressive strengths 30 - 45 MPa
• High-build applications possible while maintaining higher compressive strengths - fewer cold joints
• Frequently obviates the need for formwork
• Polymer-modification provides extremely low permeability to water, carbon dioxide and chlorides
• Exceptional system of shrinkage compensation provides long-term dimensional stability
• Can be applied quickly and efficiently by wet spraying
• One component, pre-bagged to overcome site-batched variations
• Contains no chloride admixtures
• Suitable for internal and external applications
• Potable water approved - complies to AS/NZS 4020:2005

Description

Renderoc HB40 concrete reinstatement mortar is supplied as a ready to use blend of dry powders which requires only the site addition of clean water to produce a highly consistent, medium-weight repair mortar. It is based on Portland cements, graded aggregates, lightweight fillers and chemical additives which provide a mortar with good handling characteristics while minimising water demand. The low water requirement ensures good strength gain and long-term durability.