EPD: Pre-stressed hollow core concrete slab, reinforced, C45/55, HD/F 120/20 - HD/F 120/50, 367 kg/m2 (Heidelberg Materials Precast Contiga AB – Concrete)
Hollow core is a type of slab that is made of concrete and contains prestressed reinforcement. The elements have longitudinal air channels to optimize material use and loadbearing capacity. The hollow cores are manufactured in different thicknesses depending on the desired function. This type of slabs allows for large spans, which also provides good conditions for a flexible use of the building over its lifetime. It is also a very resourceefficient product that utilizes the included material optimally. The low w/c ratio and the high strength mean that the construction dries out quickly. With hollow core slabs, the building also receives very good properties in terms of sound insulation and good resistance against fire and moisture. Another of the concretes important properties is its ability to store heat, which enables a low energy consumption and a lower power output during the buildings entire operating time. Hollow cores are 100% recyclable and enable fast, costeffective and rational assembly in the construction project. This type of slab is also well suited for reuse. Product specification Materials kg % Aggregate 797,41 79,74 Water 42,61 4,26 Metal Steel 10,89 1,09 Additives 16,47 1,65 Chemical 0,89 0,09 Cement 131,73 13,17 Total 1000,00 100,00
sweden