Concrete elements with better insulation and less thermal bridge effect
The main aim of the project has been to stimulate a development of concrete elements with better insulation and less thermal bridge effect. The aim has been to develop examples of concrete elements with better thermal properties
The aim of the project is to stimulate a development of concrete panels with better insulation and less cold bridges. The outer walls of concrete panels are typically less insulated than other outer walls. With the present and future demand for better insulated outer walls it is necessary to develop concrete panels for outer walls focusing on their heat insulation properties. The objective is to develop the buildings so that they acquire just as good energy properties as other buildings. In co-operation with producers of concrete panels the project is to put forward and analyse a series of proposals for changing the design of concrete panels with a view to increasing the insulation thickness and reduce the effect of cold bridges. The best suggested solutions within each scope of application (building designed for residential, business or industrial purposes) will be thoroughly investigated and documented so that they can easily be used when buildings are designed and constructed according to the present and future building codes and regulations
Focus has been on an overall evaluation of the proposed solutions as the use of better-insulated elements is highly dependen on the elements total properties. The project forms part of the framework program related to the Danish Building Regulations 2005 and will therefore be part of the background concerning how much the new thermal insulation requirements should be tightened. The main results of the project are that by removing concrete ribs at window door reveals and at horizontal joints between elements two advantages can be achieved simultaneously. Firstly, highly insulated concrete elements can be constructed with an effective exploitation of the insulation so that the insulation thickness dos not have to be larger than in other structures. Secondly, by a simplification of the production and mounting, savings may be obtained so that the total cost-increase using the better-insulated concrete elements (U-value of 0.17 W/m2K) is kept under 10% of the element price. As the element price amount to about 25% of the total building cost, the increase is only modest compared to the total building cost. It is therefore possible at the same time to live up to the thermal insulation requirements and do it in a competitive manner
Key figures
Category
Participants
| Partner | Subsidy | Auto financing |
|---|---|---|
| By og Byg | ||
| BETONELEMENT-FORENINGEN | ||
| Consolis Spæncom A/S |
Contact
Øvr. Partnere:
