Renderoc HB70
High build, high strength, very low shrinkage, patch repair mortar, compatible with concrete >45 MPa.
Description
Renderoc HB70 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, high-strength repair
mortar. The material is based on Portland cement, graded
aggregates, special fillers and chemical additives and is
polymer modified to provide a mortar with good handling
characteristics, while minimising water demand. The
hardened product exhibits excellent thermal compatibility
with concrete and outstanding water repellent properties.
The low water requirement ensures fast strength gain and
long-term durability.
Uses
For the reinstatement of localised patch repairs and larger
areas where suitable reinforcement is incorporated.
Renderoc HB70 is alkaline in nature and will protect
embedded steel reinforcement. It is specifically designed for
locations where high build and high compressive strengths
are required or in locations where good abrasion resistance
is necessary. The mortar is suitable where resistance is
required to chlorides and carbon dioxide.
Important Note 1: Where compatibility with
Lower-strength concrete is required, but low
permeability and high-build characteristics
are important, Renderoc HB25 or Renderoc
HB40 should be used.
When Renderoc HB70 is used in conjunction
with Impressed Current Cathodic Protection
or Norcure Realkalisation and Desalination methods, the
substrate bonding primer should be an OPC: Water slurry
mixed at a 2:1 ratio. Polymer bonding agents should not be
used. No steel primer should be applied. Please refer to
Parchem for further advice.
Important note 2: Renderoc HB70 is suitable
for use with Galvashield XP incipient anode
protection, with a resistivity <15,000 Ω cm
@ 28 days.
Advantages
- High strength and high abrasion resistance
- High build repairs
- Exceptional system of shrinkage compensation,
provides long-term dimensional stability - Low permeability provides sound protection against
carbon dioxide and chlorides - Can be applied by the wet or dry spray process for fast,
exceptionally high build repairs with enhanced
characteristics - Suitable for internal and external use
- Pre-bagged to overcome site-batched variations – only
the site-addition of clean water is required - Contains no chloride admixtures
- Potable water approved – complies with AS/NZS 4020:2005
Product specification sheet
Renderoc HB70 product specification sheet opens in a new windowManufacturer
Parchem Construction Supplies
