Thermal Properties Of Concrete Walls

Wall thermal mass such as that present in concrete masonry construction tends to decrease both heating and cooling loads in a given building thus saving energy.
Thermal properties of concrete walls. Common small sized concrete. Concrete by itself has a very low r value a measure of thermal resistance. Murray holladay rd suite 102. There are minimum r value requirements for these parts of your home specified under the building code of australia bca and dictated to by the state and climate zone in which you live.
Its insulation value comes primarily from using it in thick slabs and hence isolating the insulated space from thermal fluxes in the environment. The thermal properties of precast concrete help improve a building s energy performance. Thermal mass properties the thickness of the material and the method of construction will change the r values of your walls and roof. 8 thick concrete slab or foundation wall has an r value of about 1 04 30 while lightweight aggregate filled 8 thick concrete has an r value of about 2 18 30.
Outer walls and partition walls. The porous concrete made by gas forming and autoclaving cement foam agent and water. 3 for tabulated r values of walls with core insulation. Thermal mass is defined as.
It is an important asset for designers who need to cut heating and air conditioning costs associated with hvac systems and still keep building occupants comfortable. And the thermal conductivity is 0 12 w m k the same with aerated concrete. 0 13 0 64 30. When using core insulation the insulation should occupy all.
Guide to thermal properties of concrete and masonry systems. The common ones are 400 grade and 500 grades. Concrete sand gravel aggregate. The absorption and storage of significant amounts of heat in a building or in walls of a building ref.
As for the furring used for interior insulation the thermal resistance of the concrete masonry webs and any grouted cores should be accounted for when determining the thermal performance of the wall see tek 6 2c ref.