Castra Of Bumbești-Jiu – Gară
The castra of Bumbești-Jiu now known as Gară was a castra, fort in the Roman province of Roman Dacia, Dacia in the 2nd and 3rd centuries AD. A contemporary settlement was also unearthed at the fort. The ruins of the fort are located in Bumbești-Jiu (Romania). In the same town, the ruins of an Castra of Bumbești-Jiu - Vârtop, other Roman fort were also unearthed. See also *List of castra#Dacia, List of castra External linksRoman castra from Romania - Google MapsEarthCastrele romane de la Bumbești Jiu, cea mai simplă soluție pentru dezvoltarea orașului Notes

{{DEFAULTSORT:Castra of Bumbesti-Jiu - Gara Roman legionary fortresses in Romania History of Oltenia Historic monuments in Gorj County ...
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Opus Caementicium
Roman concrete, also called , is a material that was used in construction in ancient Rome. Roman concrete was based on a hydraulic-setting cement. It is durable due to its incorporation of pozzolanic ash, which prevents cracks from spreading. By the middle of the 1st century the material was used frequently, often brick-faced, although variations in aggregate allowed different arrangements of materials. Further innovative developments in the material, called the concrete revolution, contributed to structurally complicated forms, such as the Pantheon dome, the world's largest and oldest unreinforced concrete dome. Roman concrete was normally faced with stone or brick, and interiors might be further decorated by stucco, fresco paintings, or thin slabs of fancy colored marbles. Made up of aggregate and a two-part cementitious system it differs significantly from modern concrete. The aggregates were typically far larger than in modern concrete as well, often amounting to rubble, a ...
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