2 September 2025 The Future is the Product of the Past

Ancient Eco-Tech Uncovered in Lebanon: Phoenicians Used Recycled Pottery for Hydraulic Lime Plaster 2,700 Years Ago

Excavations at Tell el-Burak Reveal Technological Innovation and Early Sustainable Construction in Iron Age Lebanon

In a major archaeological breakthrough, researchers have identified the earliest known use of hydraulic lime plaster in Phoenician architecture—crafted not from volcanic ash like Roman concrete, but using recycled ceramic pottery. This discovery, made at the Iron Age site of Tell el-Burak in southern Lebanon, sheds light on ancient sustainability practices and high-level engineering previously unattributed to the Phoenicians.

The findings, published in Scientific Reports (2025), come from a multidisciplinary study of plaster samples collected from three installations, including a well-preserved wine press dating to ca. 725–600 BCE.

Ancient Wine Infrastructure Built with Recycled Pottery

Located just 9 km south of Sidon, Tell el-Burak was a key agricultural hub for the Phoenician city-state. Among its most significant features is a massive wine press, consisting of a large grape treading basin connected to a 4,500-liter fermentation vat—both covered in a specialized lime-based plaster.

What made this plaster extraordinary was its composition: crushed ceramic fragments—likely broken amphorae—intentionally added to the lime binder. These ceramic inclusions acted as pozzolanic material, reacting chemically with the lime to form a hydraulic mortar—a material capable of setting and hardening in wet environments.

“The presence of ceramic aggregates wasn’t just about recycling waste—it was a technological choice to produce water-resistant, durable plaster,” says lead author Dr. Silvia Amicone.

This practice predates Roman concrete and aligns more closely with early Greek and Aegean technologies, though rarely seen in the Levant before now.

Plastered installations at Tell el-Burak, Lebanon: (a) The wine press in Area 4, viewed from the west; (b) A plastered basin beneath the courtyard floor of House 3 (Area 3), seen from the southwest; (c) A plastered floor in Room 1 of House 4, also in Area 3, viewed from the northeast. Credit: The Tell el-Burak Archaeological Project. Credit: S. Amicone et al., Scientific Reports (2025)
Plastered installations at Tell el-Burak, Lebanon: (a) The wine press in Area 4, viewed from the west; (b) A plastered basin beneath the courtyard floor of House 3 (Area 3), seen from the southwest; (c) A plastered floor in Room 1 of House 4, also in Area 3, viewed from the northeast. Credit: The Tell el-Burak Archaeological Project. Credit: S. Amicone et al., Scientific Reports (2025)

Scientific Evidence: A Multidisciplinary Approach

To confirm the hydraulic nature of the plaster, researchers applied a suite of scientific techniques, including:

Optical Microscopy & SEM-EDS: Identified chemical reaction rims between lime and ceramic, a hallmark of hydraulicity.

X-Ray Powder Diffraction (XRPD): Revealed mineral phases like gehlenite, cristobalite, mullite, and diopside, typically formed at high firing temperatures.

Thermogravimetric Analysis (TGA): Showed bound water levels above 3% and CO₂ losses under 30%, confirming hydraulic classification.

Organic Residue Analysis (ORA): Detected sulphur compounds in the plaster—possibly tied to wine production or amphora use.

These results confirm that Tell el-Burak’s builders knew how to manipulate materials to create durable, water-resistant plasters, long before such knowledge became standardized in Roman construction.

Ceramic Waste as Strategic Resource

The ceramic fragments used in the plaster were not just construction debris. Petrographic and mineralogical analyses suggest they came from pottery production waste, likely from the nearby site of Sarepta, a known Phoenician ceramic center 4 km away.

Interestingly, these ceramic pieces show a mix of firing temperatures:

Type 1: Low-fired sherds (below 850°C), highly reactive.

Type 2: Overfired, vitrified pieces (above 1050°C), less reactive but still used.

Despite being more difficult to source and process, the presence of high-fired fragments suggests intentional selection or reuse of pottery wasters, not accidental inclusion. Moreover, no ceramic production waste has been found at Tell el-Burak itself, reinforcing the idea of specialist labor and material transport.

Thin-section microphotographs of ceramic aggregates used in Iron Age plaster at Tell el-Burak: (a, b, e) Type 1 ceramics—low-fired sherds with high porosity—shown under polarising light (XP) and in BSE imaging at high magnification; (c, d, f) Type 2 ceramics—high-fired, vitrified fragments—featuring isotropic matrix and bloating pores, also shown under XP and BSE. Credit: S. Amicone et al., Scientific Reports (2025)
Thin-section microphotographs of ceramic aggregates used in Iron Age plaster at Tell el-Burak: (a, b, e) Type 1 ceramics—low-fired sherds with high porosity—shown under polarising light (XP) and in BSE imaging at high magnification; (c, d, f) Type 2 ceramics—high-fired, vitrified fragments—featuring isotropic matrix and bloating pores, also shown under XP and BSE. Credit: S. Amicone et al., Scientific Reports (2025)

Technological Innovation with Centralized Control

This level of material knowledge, consistency, and effort points to centralized, elite-driven production. The plaster installations at Tell el-Burak reflect more than technical ingenuity—they also suggest an organized economic system, where specialists could access and transport specific materials for construction.

The use of such advanced plaster in wine production infrastructure also aligns with archaeological evidence that viticulture was a key component of the Phoenician economy, both locally and for trade.

Mediterranean Connections and Historical Significance

This discovery significantly shifts the timeline and geographic origin of hydraulic plaster technologies. It supports the idea that Phoenicians—known maritime traders and cultural transmitters—played a vital role in spreading technological innovations like pozzolanic mortars across the Mediterranean during the Iron Age.

While Roman concrete would later dominate ancient architecture, this early Phoenician example illustrates indigenous innovation and environmental adaptation long before the Romans industrialized the method.

Amicone, S., Orsingher, A., Cantisani, E. et al. Innovation through recycling in Iron Age plaster technology at Tell el-Burak, Lebanon. Sci Rep 15, 24284 (2025). https://doi.org/10.1038/s41598-025-05844-x

Cover Image Credit: Reconstruction of the wine press at Tell el-Burak. Credit: A. Orsingher et al., Antiquity (2020)

Related Articles

13th-Century skeletons Unearthed in Annaea Mound

8 May 2021

8 May 2021

At the historical Kadıkalesi archaeological site in Turkey’s western Aydin province’s Kuşadası district, a total of five skeletons thought to...

Hidden Archaeological Treasures from Cologne Cathedral

25 January 2024

25 January 2024

An area of around 4,000 square meters (43,055 square feet) is being discovered beneath the Cologne Cathedral, the largest Gothic...

11,000-Year-Old LSU Campus Mounds Are Oldest Known Human-Made Structures In North America

23 August 2022

23 August 2022

According to new research published in the American Journal of Science, two six-meter (20-foot) high mounds on the campus of...

Rare 832 copper coins from the Portuguese era unearthed in Goa, India

11 November 2023

11 November 2023

In Sattari, Nanoda, in the state of Goa on the west coast of India, 832 copper coins that are believed...

The 3,000-Year-Old Ancient City is Under Danger

8 February 2021

8 February 2021

For the port planned to be built in Izmir’s Aliağa district, a part of the 3,000-year-old ancient city is in...

3,500-Year-Old Tomb of King Thutmose II Discovered: The First Royal Burial Unearthed Since King Tutankhamun

19 February 2025

19 February 2025

Egyptian officials have announced a groundbreaking discovery: the long-lost tomb of King Thutmose II, marking the last of the royal...

Altar site for Greek goddess Demeter unearthed in Turkey’s ancient city of Blaundus

21 December 2021

21 December 2021

An altar site for the Greek goddess Demeter was unearthed during the ongoing excavations in the ancient city of Blaundus,...

A Dancing Muses statue 2175 years old was found in the ancient city of Stratonikeia, known as the city of eternal loves

7 December 2023

7 December 2023

The latest discovery in the ongoing excavations in the Ancient City of Stratonikeia, known as the city of eternal loves...

Nine Ancient Patolli Games Found in Mexico

10 September 2024

10 September 2024

In recent rescue excavations in Mexico by archaeologists from the National Institute of Anthropology and History (INAH) nine patolli engravings...

In a Wisconsin lake, archaeologists discover a 1,200-year-old dugout canoe

6 November 2021

6 November 2021

Maritime archaeologists from the Wisconsin Historical Society have discovered a dugout wooden canoe in Lake Mendota, Wisconsin, USA. Carbon analysis...

The ruins of a thousand-year-old Buddhist Temple will be opened to the public in Kyrgyzstan

13 September 2022

13 September 2022

The unearthed remains of an ancient Buddhist temple in Kyrgyzstan will open to the public in mid-September as part of...

8000-year-old unique “fish-figure” small home tool found in Turkey

20 October 2021

20 October 2021

During this year’s excavations in the Yeşilova and Yassıtepe mounds in İzmir, a unique “fish-figure” small home tool was found....

An unexpected shipwreck was unearthed at the Tallinn construction site

18 April 2022

18 April 2022

During the construction of the office building on Lootsi Street in Tallinn, Estonia’s capital on the Baltic Sea, a shipwreck...

In China, 2700-Year-Old Face Cream Made from Moon Milk for Men was Found

14 February 2021

14 February 2021

At a Chinese excavation site with Chinese and German researchers, evidence of a 2,700-year-old male facial cream was found. In...

Rare Ceremonial Knives Offering Discovered in the Great Basement of Tlatelolco, Mexico

27 May 2024

27 May 2024

Archaeologists from the National Institute of Anthropology and History (INAH)  have unearthed a very special votive offering during excavations at...