A New Energy-Efficient Building System Based on Insulated Concrete Perforated Brick with a Sandwich

The purpose of this research is to put forward a new energy-efficient building system that can meet the energy savingrequirement of 65% for public buildings in cold areas based on modified insulated concrete perforated brick with asandwich. Modified brick was composed of three parts and three parts can be made a whole in brick manufacturing and itwas called self-thermal insulation concrete perforated brick and could avoid appearance of cracks. The test was done toobtain thickness of EPS for modified insulated concrete perforated brick with a sandwich in order to meet the requirementof insulation. Thickness of EPS was set to 45, 50, 55, 60, 65 and 75 mm respectively and comparative experiments werealso carried out to verify the effect of insulation for modified bricks and unmodified bricks. Field tests were carried out toobtain appropriate masonry methods for modified bricks. Based on the results of analysis and discussion, then obtained:(1) Heat transfer coefficient of wall made by modified bricks was less than heat transfer coefficient of wall made byunmodified bricks when the same for thickness of EPS, it could be reduce by up to 45%; (2) When thickness of insulatinglayer was 65 mm, heat transfer coefficient of wall made by modified bricks could reached minimum limit 0.45 and it couldmeet energy saving requirement of 65% for buildings in cold area. (3) Insulating layer, located inside of the wall, couldavoid appearance of cracks on surface of wall for modified bricks.

کلیدواژه ها:

Thermal Performance ، Improved Brick ، Heat Transfer Coefficient ، Masonry Methods ، Insulation Measures ، Thermal Bridge