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There was little use of hydraulic mortar after the Roman period until the 18th century.
Hydraulic mortar was not available in ancient China, possibly due to a lack of volcanic ash.
He needed a hydraulic mortar that would set and develop some strength in the twelve hour period between successive high tides.
Hydraulic mortars for masonry construction of harbor works, etc., in contact with sea water.
Experiments were made mixing lime with other materials to provide a hydraulic mortar, but there was still no equivalent of the Roman concrete.
This was one of the first in Britain to be built using hydraulic mortar, and was restored in 1995, although it contains no water.
The cisterns consist of two barrel vaulted tunnels connected at both ends, with internal walls covered by hydraulic mortar.
Trass is the local name of a volcanic tuff occurring in the Eifel, where it is worked for hydraulic mortar.
Its travertine facade has proved porous; restoration with liquid hydraulic mortar and other materials was undertaken in 1989-90 to arrest deterioration.
Roman concrete, like any concrete, consists of an aggregate and hydraulic mortar - a binder mixed with water that hardens over time.
In the Eifel region of Germany a trachytic, pumiceous tuff called trass has been extensively worked as a hydraulic mortar.
Concrete, and in particular, the hydraulic mortar responsible for its cohesion, was a type of structural ceramic whose utility derived largely from its rheological plasticity in the paste state.
It is not understood why the art of making hydraulic mortar and cement, which was perfected and in such widespread use by both the Greeks and Romans, was then lost for almost two millennia.
His 1887 doctoral thesis was dedicated to the subject of mortars: Recherches expérimentales sur la constitution des mortiers hydrauliques (Experimental Research on the Composition of Hydraulic Mortars).
In this area, some rectangular basins coated with hydraulic mortar (cocciopesto) interpreted as cetariae: (structures used for the salting of fish and production of garum and salsamenta), known throughout the Mediterranean Sea have been found.
Hydraulic mortar or pre-Portland cement may have been occasionally produced on a small scale in this way during the medieval epoch in locations where limestone was cemented by amorphous silica or contained chert nodules or a lot of clay impurities.
Their pioneering use of water-proof hydraulic mortar and particularly Roman concrete allowed for much larger dam structures than previously built, such as the Lake Homs Dam, possibly the largest water barrier to that date, and the Harbaqa Dam, both in Roman Syria.