Penatech HS
High Strength Class C Cementitious Grout.
High Strength Class C Cementitious Grout.
Penatech HS Grout is a high strength, precision Class C grout. Non shrink dual expansion compensates for shrinkage in both the plastic and hardened state. Penatech HS complies with US Corp of Engineers Specification of non-shrink grout, CRDC 621-82A and ATSM C1107-91 (Type C).
| Appearance | Light grey powder (grey when mixed) |
| Application Temp | Minimum 5o C Maximum 30o C |
| Expansion characteristics | Expansion 1-2% in plastic state |
| Time for Expansion | Start 5 min Finish 25 min |
| Bleed | 0% |
The substrate to be grouted must be clean, sound and free from dust, oil, grease, curing compounds or any foreign matter that will affect the grout adhesion bond Bolt holes and anchor points must be clean and free of water.
All prepared areas must be saturated with water for a minimum of 4 hours prior to grouting. This will reduce the porosity of the substrate.
Prior to grouting, ensure all excess water is removed and all holes must be free from water and no puddles of water are present.
If grouting under base plates, it is imperative that bleed holes or venting holes are provided (this will eliminate pressure build up in a confined area).
It is essential that the formwork to be constructed is leak proof and water tight. In order to achieve this it is recommended that foam rubber strips or a suitable sealant such as polyurethane or silicone be used underneath the formwork.
The formwork should be constructed, which will allow and ensure a grout head is maintained on the side above the level of the underside at the base plate. The formwork should allow for gravity flow of grout with a suitable grout head allowing for continuous flow between the base plate and the concrete substrate.
To ensure ease of formwork removal, the formwork should be coated with form oil or release oil prior to grouting (consult ITLS-Aftek Technical Department for additional information).
For grouting requiring thicknesses greater than 200mm, special procedures are necessary, such as the addition of Epilox Fillers or 10mm Silt Free aggregate can be used.
At low temperatures below 10?C, the grout setting time is extended and some bleeding may occur. The early strength gain will be dramatically reduced. However, ultimate strength will be maintained. It is recommended that the Penatech HS Grout and the water be conditioned to 20-25?C overnight or several hours before application. This will assist in strength development.
At high temperatures greater than 30?C, the grout setting time is reduced and grouting application becomes problematic due to very early setting times and reduced placement times.
It is recommended that Penatech HS Grout be kept in a cool environment and the use of cold water be used for mixing. It is recommended that in instances where the temperature is greater than 30?C, the grouting be conducted early in the day or late in the evening and sheltered from sunlight and direct heat.
