Rapid Hardening Patching and Repair Construction Mortar
Description
Ad-Tek HB-Quick is a balanced blend of sand, cement and active chemical components mixed together to create a rapid-hardening high build mortar to repair damaged horizontal concrete surfaces. Ad-Tek HB-Quick is designed to accept traffic two hours after placement, minimizing any traffic interruption.
Uses
Repair of damaged concrete structures such as bridges, roads, pipes, factory floors and walls where a depth of fill of between 10mm and 100mm is required.
Benefits
- Rapid setting for quick repair in less than one hour.
- Contains no added chlorides and gypsum.
- High early and ultimate strength.
- Excellent bond to the concrete substrate.
- Corrosion protection to reinforcement.
- Excellent abrasion resistance and durability.
- Can be painted over — most coatings adhere well to the cured product.
- Economical and labour-saving material.
- Open to foot traffic in 2 hours, to vehicle traffic in 3 hours.
- Can be top treated with Ad-Tek PW for dramatically increased waterproofing.
- Product, when correctly applied, has a life greater than 10 years.
Properties
| Appearance | Grey powder |
|---|---|
| Grain size | Max 1.2mm |
| Layer thickness | 10mm-100mm |
| Fresh wet density | Approx 2.3 kg/m3 |
| Mixing water per 20 kg pail | 2.0-2.4 litres |
| Working time | 25 minutes |
| Temperature for application | From 5 to 40ºC |
| Initial and final set time | 40 and 50 min |
| Compressive strength (AS 1012.8.1 – 2000) |
|
| Flexural strength (AS 1012.8.2 – 2000) | 28 days: 8.1 MPa |
| Bond strength | 28 days: 4.9 MPa |
| Crack resistant | Ring method |
| Shrinkage | Less than 600 microstrain at 28 days |
| Time to pedestrian and vehicular traffic | 2-3 hours at 23ºC |
Installation
Surface Preparation
Remove any weak, spalling or unconsolidated concrete and thoroughly clean surface. Remove any existing coating of the concrete surface. If steel reinforcement is exposed, remove any rusting on the steel surface. Acid etch, pressure wash then hose to fully impregnate with water and allow drying to a wet dull lustre and puddle free.
Priming
The clean damp substrate must be primed with a slurry brush coat of Ad-Tek HB-Quick (2 parts powder to 1 part water).
Mixing Equipment
Low shear mechanical mixer
Mixing Instructions (20kgs Ad-Tek HB-Quick)
Place the required amount of water in a clean mixing bucket and, while stirring slowly, gradually add the Ad-Tek HB-Quick until a mix of the desired workability is obtained. Mix for a further 2–3 minutes and use within approximately 25 minutes.
Note:
- Normal water requirement is 2.0 – 2.4 litres of water to 20 kg of Ad-Tek HB-Quick.
- For depths of fill above 100mm up to 250 mm, the product can be bulked out by adding up to 40% of 5-10mm aggregate.
Application
Apply the Ad-Tek HB-Quick by trowel onto the repair surface. Fill all pores and voids and screed off excess. Allow mortar to set to desired stiffness, then finish. The total time of mixing, placing and finishing should not exceed 30 minutes.
Curing
All exposed areas should be moist cured. This should be done, as soon as the surface is firm (approx. in 1 hour after addition of water to Ad-Tek HB-Quick dry mix) with continuous application of water or wet hessian.
Packaging, Shelf Life and Storage
Ad-Tek HB-Quick is available in 20 kg moisture-resistant plastic pails. Ad-Tek HB-Quick has a shelf life of 12 months if kept in a dry store in sealed plastic pails.
Please contact our technical department for further information.
Safety Information
Detailed safety information is contained in each material data safety sheet, which can be obtained from our sales offices.
Disclaimer: Any advice, recommendation, information, assistance or service provided by application is in good faith and is believed by AD-TEK PTY LTD to be appropriate and reliable. However, any advice, recommendation, information, assistance or service provided by AD-TEK PTY LTD is provided without liability.