No, they used bronze and iron. Steel, a blend of iron and carbon, came much later.
EDIT: The above is purely incorrect. The Romans used Noric Steel, which was of very high quality. The first uses of steel so far found dates back 4,000 years.
Wikipedia confirms this under the articles of Steel, Noric Steel, and Roman Metallurgy.
The word concrete comes from the Latin word "concretus" (meaning compact or condensed), the perfect passive participle of "concrescere", from "con-" (together) and "crescere" (to grow).
Perhaps the earliest known occurrence of cement was twelve million years ago, when a natural deposit formed after an occurrence of oil shale naturally combusted while adjacent to a bed of limestone. These ancient deposits were investigated in the 1960s and '70s. On a human time-scale, lime mortars were used in Greece, Crete, and Cyprus in 800 BC, and the Romans used concrete extensively from 300 BCE to 476 CE, a span of more than seven hundred years.
Concrete was used for construction in many ancient structures.
Pont du Gard
During the Roman Empire, Roman concrete (or opus caementicium) was made from quicklime, pozzolana and an aggregate of pumice. Its widespread use in many Roman structures, a key event in the history of architecture termed the Roman Architectural Revolution, freed Roman construction from the restrictions of stone and brick material and allowed for revolutionary new designs in terms of both structural complexity and dimension.
Concrete, as the Romans knew it, was a new and revolutionary material. Laid in the shape of arches, vaults and domes, it quickly hardened into a rigid mass, free from many of the internal thrusts and strains that troubled the builders of similar structures in stone or brick.
Modern tests show that opus caementicium had as much compressive strength as modern Portland-cement concrete (ca. 200 kg/cm2). However, due to the absence of reinforcement, its tensile strength was far lower than modern reinforced concrete, and its mode of application was also different:
Modern structural concrete differs from Roman concrete in two important details. First, its mix consistency is fluid and homogeneous, allowing it to be poured into forms rather than requiring hand-layering together with the placement of aggregate, which, in Roman practice, often consisted of rubble. Second, integral reinforcing steel gives modern concrete assemblies great strength in tension, whereas Roman concrete could depend only upon the strength of the concrete bonding to resist tension.
The widespread use of concrete in many Roman structures has ensured that many survive to the present day. The Baths of Caracalla in Rome are just one example. Many Roman aqueducts and bridges have masonry cladding on a concrete core, as does the dome of the Pantheon.
SOURCE OF THE INFORMATIONS ABOVE : WIKIPEDA- en / Information about the use of concrete by the Romans.
Notice: The writing above is a fragment of the Wikipedia's page named "Concrete" and aims to provide a more complete reference about the characteristics of the ancient concrete.
Yes. They are credited with inventing concrete and their weapons and other military gear were iron and sometimes bronze. Gold was used for their jewelry and other decorative purposes and silver in their money. Lead was used in their Plumbing.
The Romans
The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.
No, the Romans did not invent bricks, but they did invent concrete.
The Egyptians because for there pyramids to make the big huge wall. NOT! I have no flipping clue who used concrete before the Romans!
Romans used concrete, the arch and domes which lead to roads, aqueducts, coliseums, baths, and basilicas .
The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.
The Romans invented concrete.
The Romans were the first to use concrete.
The Romans invented concrete.
Calcium metal is extremely soft and brittle but the mineral calcium carbonate is already a component in many bridges and has been for about three thousand years. Calcium carbonate is a component of concrete. The Romans were the first to use concrete.
The Romans are credited for using concrete first.
the Romans invented concrete. They called it Opus caementicium
The Romans
Concrete is very important to the Romans because they were the first people who invented the hydraulic cement based concrete. The Roman did build very many concrete structures like the Pantheon in Rome.
Concrete was invented by Romans in circa 1243 A.D.
The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.The main building technique introduced by the Romans was the dome. Their invention of various weights of concrete made this possible.
Concrete.