Reduction of the Carbon Footprint of Precast Columns by Combining Normal and Light Aggregate Concrete

To reduce the global emission of CO2 from building industry, researchers, architects and manufacturers must consider new ways constructing precast concrete buildings. Modern columns walls are not optimized to applied load, there is potential save material. By creating a stronger column core lightweight cover, it possible carbon footprint. A method proposed calculate such eccentrically loaded two or more materials. The analytical developed for straight with Entasis. Production curved Entasis by using textile molds due low mold pressure light aggregate concrete. Two types load tested confirm method. calculated some examples, shows that an geometry often leads reduced footprint compared regular columns. concept especially efficient slender Furthermore, external layer ensures protection against fire if high-strength as core.