Available in Switzerland
Concretum® Q-FLASH 2/20 is a highly advanced third-generation rapid-hardening concrete. It is characterized by rapid-hardening, quick drying, ease of handling, and adjustable open time. The heat of hydration and shrinkage are significantly lower than those of other rapid-hardening concretes. Production takes place either in the concrete plant or directly at the construction site using a ready-mix or volumetric truck. It is ideal for situations where large concrete traffic areas need to be renewed in the shortest possible time.
In contrast to conventional concrete, Q-FLASH 2/20 hardens much faster and is fully load-bearing after just 1–2 hours, depending on the desired open time. Compared to other rapid-hardening concrete types, Q-FLASH 2/20 still allows enough time for placement and finishing. Thanks to its special composition, Concretum® Q-FLASH 2/20 also outperforms conventional concrete in terms of lifespan – while remaining virtually fully recyclable.
Recipe (mix design), Production and Installation of Concretum® Q-FLASH 2/20:
The rapid-hardening concrete Q-FLASH 2/20 can be supplied in a variety of mix designs, depending on the customer's and project's requirements:
- Stable for installation with concrete pavers
- Pumpable concrete
- Pile concrete
- SCC (Self-Compacting Concrete)
Q-FLASH 2/20 can be produced, transported, and processed like conventional concrete: It can be manufactured in a concrete plant, transported to the construction site, and then installed by the construction company using traditional methods. Alternatively, it can also be mixed directly on-site using a mobile concrete mixer or truck mixer and immediately placed. Concretum® Q-FLASH 2/20 has also been specifically developed and optimized for use with concrete paving machines. Concrete areas of up to 1000 m² can be rehabilitated in a single night shift. Our customers can rely on our support throughout the process: We assist concrete plants and construction companies at every step and work together with them to make adjustments based on local and project-specific requirements.
Advantages and Features:
- Easy to process (like conventional concrete)
- Adjustable open time (45 to 150 minutes)
- Extremely fast strength development (compressive strength fc > 20 N/mm2 after 2 hours)
- Extremely fast drying (< 4.0 CM-% after 2-3 hours)
- Pumpable to stable consistency or SCC (Self-Compacting Concrete)
- Low shrinkage (< 0.2 ‰ after 91 days)
- Fresh concrete temperature range: 5 – 30 °C
Applications:
- Aviation surfaces – Repair of runways, landing strips, taxiways, and parking areas.
- Road traffic surfaces – Repair of highways, bridge decks, expansion joints, roundabouts, bus stops, etc.
- Bridge construction – Various components in bridge construction.
- Railway construction – Replacement of fixed tracks in railway tunnels.
- Tunnel construction – Various components in tunnel construction.
- Building construction – e.g., precast concrete elements with short formwork removal times.
- Civil engineering – e.g., all types of components that need to harden and/or dry quickly.
Downloads:
Here you will find all Safety Data Sheets, Technical Data Sheets, Product Brochures, and Project Reports.