Composition for construction of concrete floors, walls or roofs in buildings

Abstract

The present invention discloses the use of a composition including ballast, hydraulic binding agent and water for the construction of concrete floors, walls or roofs in buildings, in which the ballast in the concrete produced from the composition contains a sufficient amount of soap stone to achieve a concrete with higher specific heat capacity compared to common concrete.

Description

FIELD OF THE INVENTION[0001]The present invention relates to the use of a composition comprising ballast, hydraulic binding agent and water for construction of concrete floors, walls or roofs in buildings.BACKGROUND OF THE INVENTION[0002]With the energy situation of today, it becomes more and more important to produce, handle and save energy in a way that is as harmless to the environment and as cost effective as possible. The energy for heating plays an important role, particularly in countries with a cold climate.[0003]Due to their high thermal capacities, materials such as stone and water accumulate heat well. However, the heat accumulation characteristics differ in substantial extent with different species of stone. Concrete consists mostly (about 75%, e.g. 60-90%) of ballast material (sand, crushed stone, or in some extent crushed concrete) and has a heat capacity of about 0.92 (e.g. 0.90-0.94) kJ / kg·K.[0004]Concrete ballast generally consists of so called gangue or rubble (usu...

AI Technical Summary

Benefits of technology

[0013]The usage of the application entails several advantages. The improved heat-storing characteristics in the concrete according to the invention result in less energy need to warm up an area constructed of such concrete. When large amounts of energy easily can be stored, it is also possible to supply energy when the energy costs are lower and to, without any additional energy supply, let the energy emit when the energy costs are higher. The energy saving can be optimized additionally depending on the kind of energy supply system being used (e.g. ground source heat, heating floor of different kinds, district heating, different kinds of heating boilers etc.). All in all, a concrete prepared by using the composition according to the invention with good heat-storing characteristics is consequently provided for construction of floors, walls or roofs, which is also harmless to the environment and cost effective.

Problems solved by technology

Consequently, in the circumstances of the above, the problem to provide a composition with good heat accumulating characteristics for construction of concrete floors, walls or roofs in buildings, which also is harmless to the environment and cost effective, remains.