Penapatch HB50 Structural Repair Mortar
High Build, Medium Weight, High Strength Polymer modified Structural Repair Mortar Grout.
High Build, Medium Weight, High Strength Polymer modified Structural Repair Mortar Grout.
Penapatch HB50 is a high strength, high build, medium weight shrinkage compensated structural repair mortar.
Penapatch HB50 is designed to be used for vertical or horizontal applications. Penapatch HB50 has high, ultimate compressive strength and high abrasion resistance.
The specially selected cements and polymers contained in Penapatch HB50 provide a mortar with strong adhesion to concrete and masonry on vertical and horizontal substrates with extremely low shrinkage and relatively low density.
Penapatch HB50 requires only the addition of water.
(obtained using 2-7 litres of water per 20kg bag)
| Appearance | Grey powder |
| Fresh wet density | Approx. 1800 kg/m³ dependent on consistency used |
| Application Temp | Minimum 5˚ C Maximum 35˚ C |
All surfaces must be free of oil, grease, dust, plaster, paint and any other contamination that will inhibit the bond.
Any cracked or weakened surface should be removed and repaired to provide a solid foundation.
It is recommended that for large areas a minimum depth of 5mm be prepared as to avoid excessive feather edging or skim coating. Break out the repair area to a minimum of 5mm up to the saw cut edge.
Scabbing or high pressure water blasting should be used to remove laitance and provide a mechanical key.
If any corroded steel is present remove all loose scale and corrosion/rust deposits. Grit blasting is effective in removing corrosion, and all steel including re-bars should be cleaned to a bright condition.
Immediately after cleaning steel, the steel should be treated with Aftek Zinc Rich Primer. This will stop further oxidation and corrosion.
Concrete/Masonry: Priming is necessary.
The substrate should be pre-soaked with water and excess water removed prior to application of Rendergrip B.
For damp or repairs exposed to occasional or permanent dampness, the substrate must be primed with Epicrete. For very porous substrates all masonry surfaces should be primed with Aftek Rendergrip B. Allow the primer to reach a tacky consistency before applying Penapatch HB50
Exposed steel and rebar should be primed with Aftek Zinc Rich Primer.
Remove all loose corrosion deposits on steel. Steel should be cleaned to a bright condition. On completion of cleaning, prime steel with Aftek Zinc Rich immediately.
Note: If the Rendergrip B primer dries prior to application of Penapatch HB50, it is imperative that the Rendergrip B is re-applied and allowed to reach a tacky consistency prior to the application of Penapatch HB50. If the Rendergrip B is too wet, the ultimate buildup of the Penapatch HB50 will be difficult as slump will occur to the interface of the concrete substrate and repair mortar. In the case where Epicrete is used as a primer, the Epicrete must be tacky NOT DRY prior to the application of the Penapatch HB50.
Penapatch HB50 is ready to use- simply add the powder to 2.7 – 3.0 litres of water and mix using a mechanical forced action mixer with a high shear spiral mixing paddle.
Do not use free fall mixers.
Always add the powder to the pre-measured water and mix until a homogenous mix is obtained which is lump free. Mixing normally takes 3-5 minutes. Any shorter mixing time will result in an inconsistent mix.
Do not mix part bags
Do not mix by hand
Do not add excess water
Do not add more than 3.0 litres of water
Excess water will reduce the ultimate (final) strength and extend the drying time of the product. Additional or excess water will increase the sag and reduce the build-up of the mortar.
Only mix the quantity of material that can be used within the set time of the material. Discard partially set or hardened material.
Apply the mixed material to the prepared surface using a trowel or a gloved hand. Thoroughly compact the mortar into the prepared and primed substrate and around the exposed steel reinforcement and re-bars. A smooth surface can be obtained using a steel trowel.
DO NOT OVERWORK THE SURFACE
Penapatch HB50 can be applied using wet application technique. The mortar is pre-mixed with the required dosage of water and then pumped through a delivery hose through a spray gun with a suitable nozzle. Consult Aftek for further information.
Do not apply at temperatures below 5º C and falling. All temperatures of 5º C and below, the use of warm water is recommended.
Do not apply at temperatures above 35º C as initial set will commence early and the product will be difficult to apply. It is recommended that chilled/cold water be used to mix the product.
Curing should be conducted is accordance to good concrete practise and Aftek recommend the use of suitable curing compound, Curecon A, applied in accordance to Technical Data Sheet.
Penapatch HB50 can be over coated with the Aftek range of decorative and protective coatings. All coatings may be applied over the Curecon A; hence removal of the curing compound is not necessary.
