The importance of Concrete and Arch in Rome
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The Importance of Concrete and Arch in Rome

In this post, we dive into the development of both concrete and the arch including the importance of both concrete and arch in the life of Rome and the results of their use.

Why was the invention of concrete so significant in ancient Rome?

Roman architecture stands out compared to the architectural styles of Persians, Egyptians, Greeks, and Etruscans. The styles that came before Roman was externally grandeur and built to impress an outside looker. In the ancient Greek Temple in Paestum, Italy, the architecture used upright columns with a horizontal block laid flat across the top (02).

Roma, Colosseo.
“Jerzy Strzelecki / CC BY Creativecommons.orgJerzy Strzelecki, CC BY 3.0, via Wikimedia Commons

However, Romans found a fundamentally different architectural style by discovering, experimenting, and exploiting concrete, arches, and vaulting. They built the inside of Roman buildings as impressive as their exteriors. The development of concrete and the arch was significant to Roman life, and their use helped them achieve wonders. (02).

Development of Concrete and the Arch & The Importance of Each in The Life of Rome

0x010C, CC BY-SA 3.0, via Wikimedia Commons

Romans used many materials and techniques passed down through previous architectural eras. Nevertheless, also, Romans invented new styles. Marble was a popular choice for grand buildings, such as the temple of Jupiter. Travertine white limestone was also another common material that the Roman architects used primarily for paving, steps, and frames. They used concrete rubble as a filler material (01). Tufa, a volcanic stone, was also used in building constructions (02).

Potential of The Concrete

In time, the Romans realized the full potential of the concrete (opus caementicium). The material could support high weight and span the space through new styles (01).

According to Cartwright (2018), “the first documented evidence of its use is from the 3rd century BCE Cosa, and its first use in Rome has been a 2nd century BCE warehouse. Also, in the 2nd century BCE, it was discovered that using pozzolana, concrete made using volcanic sand, which had a high silica content, could set underwater and be even more durable than standard concrete.”

Maison Carrée, Nîmes, France
Danichou, Public domain, via Wikimedia Commons

The use of concrete became famous due to its stability and flexibility. It was also cheaper and easy to transport compared to solid stones. Concrete initiated an architectural revolution. It added creativity to the building styles.

True Arch

Concrete also paved the way for the innovation of the “true arch.”

A “true arch” is built with wedge-shaped blocks and voussoirs. A keystone in the centre held voussoirs in place.

This style helped to transform the weight from the top of the arch to the ground. It could also connect greater distances. Compared to the column and lintel style, the true arch proved to be more efficient and flexible. Roman architects used their two significant innovations, concreate and true arch, to build magnificent architectural wonders that survive through the 21st century (01).

Emperor Nero’s infamous Golden House (Domus Aurea) is an excellent example of concrete use. According to Ambler (2015), the architects, “Severus and Celer used concrete in new and exciting ways. Rather than utilizing the material for only its structural purposes, the architects began to experiment with concrete in aesthetic modes such as expansive domed spaces“.

Détail de la maquette de Rome à lépoque de Constantin
Jean-Pierre Dalbéra from Paris, France / CC BY (

The Romans used arches to build bridges across many rivers and gullies. Not only they help expand their empire but also supervised it well. In Ambler’s words (2015), “from the Alcantara bridge in Spain to the paved roads in Jordan, the Romans efficiently moved messages, money, and troops.” The Romans built amphitheatres, enclosed spaces like the oval amphitheatre Colosseum, one of the seven world wonders today (03).

A significant milestone in Architectural styles

Colosseum, Trajan markets, Golden House, Baths of Caracalla, and the Maxentius Basilica are some other examples of Rome’s architectural revolution. The development of concrete and the arch marks a significant milestone in Architectural styles. The concrete and the arch improved Rome’s life and secured a prominent place for the empire in architectural history.

References for further reading on the importance of concrete and arch in Rome:

01. Cartwright, M. (2018, March 14). Roman Architecture. Ancient History Encyclopedia. Retrieved from

02. Ambler, J L. (2015, August 8). An introduction to ancient Roman architecture. Smarthistory Retrieved from

03. Colosseum (n.d) Retrieved from