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The materials used in the concrete of the dome also vary. At its thickest point, the aggregate is travertine, then terracotta tiles, then at the very top, tufa and pumice, both porous light stones. At the very top, where the dome would be at its weakest and vulnerable to collapse, the oculus lightens the load. [53] Beam in the dome of the Pantheon
The Pantheon in Rome is an example of Roman concrete construction. Caesarea harbour: an example of underwater Roman concrete technology on a large scale. Roman concrete, also called opus caementicium, was used in construction in ancient Rome. Like its modern equivalent, Roman concrete was based on a hydraulic-setting cement added to an aggregate.
The Roman Pantheon had the largest dome in the world for more than a millennium and is the largest unreinforced solid concrete dome to this day [1]. The Roman architectural revolution, also known as the concrete revolution, [2] is the name sometimes given to the widespread use in Roman architecture of the previously little-used architectural forms of the arch, vault, and dome.
Rounded arches, vaults, and domes distinguish Roman architecture from that of Ancient Greece and were facilitated by the use of concrete and brick. [1] By varying the weight of the aggregate material in the concrete, the weight of the concrete could be altered, allowing lighter layers to be laid at the top of concrete domes.
The most common materials used were brick, stone or masonry, cement, concrete and marble. Brick came in many different shapes. Curved bricks were used to build columns, and triangular bricks were used to build walls. Marble was mainly a decorative material. Augustus once boasted that he had turned Rome from a city of bricks to a city of marble ...
The Doors of the Roman Pantheon are the main entrance bronze doors to the rotunda of the Roman Pantheon. As a monument of applied arts , the exact date of their creation has remained open to speculation for centuries, with scholars attempting to determine the age of the doors and whether they are contemporaneous with the Pantheon.
The new government designated the Pantheon "The Temple of Humanity", and proposed to decorate it with sixty new murals honouring human progress in all fields. In 1851 the Foucault Pendulum of astronomer Léon Foucault was hung beneath the dome to illustrate the rotation of the earth. However, on complaints from the Church, it was removed in ...
A single concrete block, as used for construction. Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material. [2]