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Concrete was used to make the foundations, walls and vaults.The concrete walls were all faced with either brick or stone.Brick faced concrete is called opus testaceum.Concrete faced with irregularly shaped stones is referred to as opus incertum.Reticulate facing is made up of stones pieces with a worked square face set on the point forming.
We are a large-scale joint-stock enterprise integrating scientific research, production and sales.Our leading products have crushing equipment, sand making equipment, mobile crusher, etc., Each type of product is with complete specifications. All products have passed ISO9001, CE and GOST international quality system certification.