PROXTREM
PROXTREM is pumpable concrete specially designed to withstand the coldest conditions. It is a product with a specific formulation with a very low water/cement ratio and an entrained air content in fresh state of ≥4.5%, making PROXTREM concrete present excellent resistance to freeze-thaw cycles, making it suitable for extreme sub-zero temperatures.
This concrete incorporates structural fibers in accordance with Annex 7 of the Structural Code “Recommendations for the use of fiber-reinforced concrete,” which avoid the use of conventional reinforcement. Substituting steel reinforcement is highly advisable in this type of application as it can suffer the effects of corrosion and structural alterations due to the continuous temperature changes to which it will be subjected during its service life.
Additional information
Documents
Field of application
- Pavements for freezing/cold storage rooms.
- Pavements subjected to very low temperatures: laboratories, agri-food industry and also to freeze-thaw cycles.
- Industrial pavements.
Advantages
- RESISTANT: this product is designed to withstand sub-zero temperatures.
- EFFICIENT: Being a highly pumpable product, it is quick to apply on site, and generates no waste.
- NO REINFORCEMENT: The use of structural fibers avoids the use of metal reinforcement, saving time and costs, up to 150m2 without joints.
- CRACK-FREE: It replaces conventional reinforcement and, therefore, withstands concrete shrinkage and avoids the need for joints in the pavement.
- QUALITY: The liquid consistency is suitable for correct placement, thus avoiding the addition of water on site.
Application System
- PROXTREM is applied in liquid consistency and always by specialized Molins teams.
- Its placement can be either by direct pouring or pumping. The placement of PROXTREM does not differ from that of conventional concrete.
Particularities
- Given the low water/cement ratio of PROXTREM concrete and its placement in confined spaces with little ventilation, correct curing of the concrete is mandatory.
- The use of this concrete for pavement applications subjected to freeze-thaw cycles requires a minimum cement content, control of the maximum water/cement ratio and control of entrained air in the fresh state.
- PROXTREM is suitable for the placement of products approved for the food industry (resins) on top of it; it is possible that prior to their application, surface milling of the concrete may be required.
Technical characteristics
| Maximum aggregate size | 10 / 20mm |
|---|---|
| Consistency | Liquid |
| Compressive strength (28 days) | > 25.0 Mpa |
| Thickness | ≥ 15 cm |
| Environments | Class: XC3, XC4, XF1, XF3 Adaptable to CodE specifications. |
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