发明公开
EP3261811A1 DACHSTEIN SOWIE VERFAHREN ZUR HERSTELLUNG EINES SOLCHEN DACHSTEINS 审中-公开
达赫斯汀和用于生产这种屋顶石的方法

DACHSTEIN SOWIE VERFAHREN ZUR HERSTELLUNG EINES SOLCHEN DACHSTEINS
摘要:
The invention relates to a roofing tile composed of concrete material and to a method for producing such a roofing tile, wherein the concrete material comprises a binder, a gravel, a light-weight aggregate, and added water and the roofing tile has at least one watercourse and a lateral interlocking joint consisting of a covering fold and a water fold, wherein, according to the invention, the ratio of water to binder is less than 0.3, the light-weight aggregate is composed of a material that is hydrophobic and/or not hygroscopic, the roofing tile has a density in the range of 1.6 g/cm
3 to 1.9 g/cm
3 after the hardening, wherein the roofing tile has a thickness of 5 mm to 9 mm, preferably 7 mm to 8 mm, in the highly loaded regions, preferably in the region of the watercourse. The roofing tile according to the invention can be economically produced in the extrusion method with low material costs, has a signficantly reduced weight, and has strength comparable to conventional roofing tiles over the long term. The roofing tile can be combined both with further roofing tiles according to the invention and with conventional roofing tiles in order to form a roof-covering assembly.
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