The evaluation of the thermal performance in building housings is a topic of great interest, since it involves issues concerning energy consumption cost saving and environment, with reference to a domestic adoption of 2009/91/EC Directive related to energy efficiency in the construction field. Edilmatic has developed and tested a new connection system called ESP Pin, which allows multilayer thermal-cut Sandwich infill panels with no heat bridges to be created, in order to meet its customer's needs. Such panels have two concrete layers (outer load layer, inner load-bearing layer), between which there is a heat insulating material layer. The properly arranged ESP connection passes through the heat insulating layer, connects the two concrete layers and supports the outside panel. Edilmatic ESP Connection Pins are available in two versions: ESP 120 and/or ESP 170 (depending upon the thickness of the heat insulating material). ESP 120 can be used with heat insulating layers up to 60mm and with a maximum utilization capacity equal to Cu=30kgs. ESP 170 can be utilized with insulating material layers from 60 mmon up to 100 mm, with a capacity from 60 kgs to 30 kgs (depending upon the thickness of the heat insulating material).
ESP Pins are made of thermoplastic material, i.e. a composite polyamide-66 material having a 50 % fibreglass reinforcement obtained by heat-stabilizing and injection moulding.
The very low thermal conductivity of this material allows the temperature inside the panel to properly be distributed and a creation of heat bridges to be hindered, moreover, it determines panel heat transmission values being lower than the ones to be obtained by using metal connectors. This modest-stiffness material also allows the insert to "support" the concrete layers due to the thermal expansion the panels are subject to. The pin also shows very good mechanical properties (tensile strength, bending and cutting) and its particular conformation allows a very easy insertion in any kind of heat insulating material to be achieved. To characterize both the material and the product, a test campaign has been conducted to determine mechanical and physical characteristics of the pin. All technical reports related to the carried out tests, which also concern a connector behaviour in a basic environment and at a different temperature, are available. All tests determining the mechanical characteristics of both Pin and Connection have been carried out at the University of Brescia. To support design engineers, Edilmatic supplies the pin with a software (k-term) approved by ICMQ (Institute of Certification and Quality Labelling), which allows users to get details concerning a proper arrangement of the inserts in the panel (graphic dxf printout) and also to obtain data regarding a thermal transmission of the panels in compliance with UNI EN 6946 Standard. |
Fasi di predisposizione delle Spine Edilmatic ESP
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