Personal profile

Research interests

I am a scientist and an engineer with extensive experience in the design, characterisation and performance assessment of cementitious materials for applications in the construction and energy sectors. I work in close collaboration with a broad multi-disciplinary and international research community, as well as with industry, aiding knowledge transfer for the rapid adoption of novel low carbon cement and concrete technologies, and the development of a sustainable built environment. My current research interests include:

(i) Development, characterisation and exploitation of advanced and non-traditional cement and concrete technologies, including:

  • Development of manufacturing routes to produce low-carbon cements with controlled functionalities, including novel blended Portland cement and alkali-activated materials
  • Determining the factors controlling phase assemblage evolution and stability of Portland and non-Portland cements.
  • Mechanisms leading to structural modifications of Portland and non-Portland cements exposed to aggressive environments, emphasising chemical/physical binding of anions/cations and structural phase transformations
  • Application of advanced analytical techniques (e.g. solid-state NMR spectroscopy, X-ray computed microtomography (CT)) 
  • Validation of testing methods for physicochemical characterisation of conventional and alternative supplementary cementitious materials
  • Development and validation of standardised testing methods to determine performance of cement and concrete

(ii) Sustainability aspects of novel cement and concrete technologies

  • CO2 uptake capacity of cementitious materials
  • Waste management and valorisation for production of low carbon construction materials
  • Circularity of cement and concretes integrating durability concepts
  • Infrastructure for well-being

(iii) Evaluation of fit-for-purpose cementitious wasteforms for immobilisation of nuclear wastes, including:

  • Chemical/physical binding mechanisms of radionuclides in cements with different chemistries
  • Phase assemblage evolution and stability of Portland and non-Portland based cementitious wasteforms
  • Effect of radiation in cementitious systems

(iv) Performance of cementitious materials in extreme environments

  • Effect of loading on concrete durability performance
  • Cementitious materials exposed to supercritical CO2
  • Well cements

Other responsibilities

I coordinate international efforts in my role as Convener of the RILEM Technical Activities Committee (TAC) Cluster A: Materials Processing and Characterisation (Since 2024, 12 active TCs), and as Deputy-Chair of the RILEM Technical Committee CUC on carbon dioxide uptake by concrete during and after service life (Since 2024, >90 members).

Expertise related to UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):

  • SDG 7 - Affordable and Clean Energy
  • SDG 8 - Decent Work and Economic Growth
  • SDG 9 - Industry, Innovation, and Infrastructure
  • SDG 10 - Reduced Inequalities
  • SDG 11 - Sustainable Cities and Communities
  • SDG 12 - Responsible Consumption and Production
  • SDG 14 - Life Below Water

Education/Academic qualification

Materials Engineering, Doctor of Engineering, Carbonation performance of alkali-activated blended metakaolin/ blast furnace slag concretes, Universidad del Valle

Sept 2005Jun 2009

Award Date: 8 Dec 2009

Materials Engineering, Bachelor of Engineering, Mechanical and Durability Performace of Alkali-Activated Slag Concretes, Universidad del Valle

Aug 1999Dec 2004

Award Date: 8 Dec 2004

External positions

Visiting Professor, ETH Zürich

1 Sept 2023 → …

Keywords

  • Cement
  • Concrete
  • Durability
  • Decarbonisation
  • Materials characterisation
  • Circular Economy
  • sustainability
  • Alkali-activated cements
  • Cement replacements

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