Title :

Microstructure and water absorption of ancient concrete from pompeii: an integrated synchrotron microtomography and neutron radiography characterization

Author(s) :

Xu, Ke [Auteur]
University of California [Berkeley] [UC Berkeley]
Tremsin, Anton S. [Auteur]
University of California [Berkeley] [UC Berkeley]
Li, Jiaqi [Auteur]
Ushizima, Daniela M. [Auteur]
University of California [Berkeley] [UC Berkeley]
DAVY, Catherine [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Bouterf, Amine [Auteur]
Laboratoire de Mécanique et Technologie [LMT]
Su, Ying Tsun [Auteur]
University of California [Berkeley] [UC Berkeley]
Marroccoli, Milena [Auteur]
Università degli studi della Basilicata = University of Basilicata [UNIBAS]
Mauro, Anna Maria [Auteur]
Osanna, Massimo [Auteur]
Telesca, Antonio [Auteur]
Monteiro, Paulo J. M. [Auteur]

Journal title :

Cement and Concrete Research

Abbreviated title :

Cem. Concr. Res.

Volume number :

139

Publication date :

2021-01-01

ISSN :

0008-8846

English keyword(s) :

Fracture
Image analysis (B)
Roman concrete
Neutron radiography
Synchrotron microtomography
Transport properties (C)
Pore structure
Machine learning

HAL domain(s) :

Chimie/Matériaux

English abstract : [en]

There is renewed interest in using advanced techniques to characterize ancient Roman concrete due to its exceptional durability and low-carbon footprint. In the present work, samples were drilled from the “Hospitium” in ...
Show more >There is renewed interest in using advanced techniques to characterize ancient Roman concrete due to its exceptional durability and low-carbon footprint. In the present work, samples were drilled from the “Hospitium” in Pompeii and were analyzed by synchrotron microtomography (μCT) and neutron radiography to study how the microstructure, including the presence of induced cracks, affects their water adsorption. The water distribution and absorptivity were quantified by neutron radiography. The 3D crack propagation, pore size distribution and orientation, tortuosity, and connectivity were analyzed from μCT results using advanced imaging methods. Porosity was also measured by mercury intrusion porosimetry (MIP) as a reference. Ductile fracture patterns were observed once cracks were introduced. Compared to Portland cement mortar/concrete, the Pompeii samples had relatively high porosity, low connectivity, and a similar coefficient of capillary penetration. In addition, permeability was predicted from models based on percolation theory and pore structure data to evaluate the fluid transport properties. Understanding the microstructure of ancient Pompeii concrete is important because it could inspire the development of modern concrete with high durability.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Chimie, matériaux et procédés pour un nucléaire durable (CIMEND)

Submission date :

2022-03-02T07:15:19Z
2024-02-06T14:05:44Z