HOME PRODUCT WINTER FOUNDATION REFERENCES TAKE CONTACT BLOGS CONTACT INFORMATION SALES MARKETING WORK MANAGEMENT ADMINISTRATION CUSTOMER SERVICE 010 292 6990 info@perustava.fi BILLING AND ORDERS 010 292 6991 toimisto@perustava.fi PWS - FOUNDATIONS ALSO IN WINTER! Founding Winter Secure (PWS) is a comprehensive on-site concrete protection system developed by Founding. PWS enables safe winter castings and consists of seven (7) parts: 1. Gravel mat protection The gravel mat is always pre-protected by the builder. Immediately after its completion, a 10 mm thick frost mat is applied to the pre-compacted and leveled (+/- 20 mm) gravel mat. At least one layer of EPS / XPS insulation is installed on top of this. A light cover is installed on top of the insulation, e.g. to facilitate the removal of any snow that may fall on it. Snow must be removed from the cover before starting foundation work. 2. PWS thermoforms In winter, work will begin with the Founder's installer first removing the top layers of gravel mattress protection, ie EPS insulation before light formwork and underground flooring, before installing the mold. In wood-based space prefabricated houses, no frost mat is required for protection at all, and the planned insulation layer (usually XPS 2x50 mm) is left under the foundation. In winter, PWS thermoforms are used in the foundation, which prevents the heat in the ready-mixed concrete from escaping through the inner or outer mold to the "magpies". 3. Preheating of concrete aggregate Ready-mixed concrete is always delivered to the construction site in winter locations preheated. The colder the weather on the casting day, the hotter the water needed to make the concrete is heated. By preheating the aggregate, the reaction required for the concrete to harden is started quickly on site, allowing the concrete to reach its strength before freezing. In the reaction, the temperature of the concrete rises by tens of degrees, so it also heats itself. 4. Concrete hardening cable (requires electricity, 16 A current) Electricity must always be available on site before starting work. In winter, this is especially important. Electricity is needed e.g. self-adjusting concrete hardening cables that are installed in the reinforcements before concreting. The cables are disposable, but with their additional heat they help and speed up the hardening of concrete decisively. 5. Mechanical protection after casting Immediately after concreting and rubbing on the heel, the upper surface of the casting mold is insulated with foam to prevent heat from evaporating from the concrete so quickly. 6. Real-time monitoring of concrete temperature The strongest link in the PWS protection system is the real-time monitoring of the concrete temperature used by the Basic Work Management. With the sensors installed in the casting and the mobile application, the development of the concrete temperature can be monitored in practice in real time, which is useful, for example, when the frost suddenly tightens towards evening. If the concrete temperature drops too low, the system will trigger an alarm, resulting in the necessary action being taken quickly - even in the middle of the night. If necessary, the system can be used to show the development of the temperature and strength of the concrete in the last 12 hours, for example. 7. Additional heating (not standard in winter deliveries) In severe frosts, the temperature development of the concrete may slow down so much that in addition to the above measures, additional external heating is needed. This is most typically accomplished with fuel heaters and mechanical shielding and is short-lived. READY TO FIND OUT MORE? NO THEN ONLY CONTACT US! “In it, I watched from my terrace on the neighbor’s plot as the morning sun shone on its first rays. Had brought their rigs last night, now almost half of the molds were in place on the crushed stone. One installer put the reinforcements, the other sounded to secure a concrete order on the phone for tomorrow. Effective mood, I pondered. ” KARISTON GLOVES FACEBOOK YOUTUBE THANK YOU FOR YOUR INTEREST. COPYRIGHT 2016