je pravda, ze sa asi jedna o techniku ktora sa pripisuje "Rimanom", ale to nevyjadruje presne to co hladate.

"za rimsky povod sa tiez prihovara"..., to este neznamena ze to je rimskeho povodu a uz vobec nie teoria

..."concrete was virtualy "poured" or layered into a formwork and took the shape of its container
http://id-archserve.ucsb.edu/arthistory/152/concrete.html

alebo " we have learned that Romam concrete was a simple mixture of wet lime and pozzolan in specific ratios to match the desires of Roman architects. We have also learned that the Romans fallowed a placement method of tamping the stiff mortar in the voids of a rock layer".
www.romanconcrete.com

Ak je tu pouzity vyraz stiff mortar, potom treba uvazovat aj nad inou formou ako napr. vo vasom pripade liaty/e murivo.

Dalej pre zaujimavost
Opus caementicium- to je vseobeny nazov pre viac ako jeden sposob pouzivania rozneho materialu a spojiv: napr. v tom je aj Opus signum, opus incertum a asi 5-6 dalsich.
http://www.romanaqueducts.info/aquasite/help/tekopusbreed.ht...

or http://ancienthistory.about.com/library/bl/uc_geary_rrc3.htm