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Materials Department Materials Department

António Bettencourt Ribeiro

António Bettencourt Ribeiro
Diretor de Unidade Departamental
Phone: 218 443 225

Professional Situation

Senior Research Officer

Academic and Scientific Degrees

  • PhD in Civil Engineering by Faculty of Engineering of the University of Porto (FEUP), 1999.
  • Master’s in Structural Engineering by Instituto Superior Técnico, Technical University of Lisbon (IST/UTL), 1991.
  • Degree in Civil Engineering Instituto Superior Técnico, Technical University of Lisbon (IST/UTL), 1987.

Functions and Relevant Public Offices

  • Head of the Concrete, Stone and Ceramics Unit, Materials Department, LNEC, 30-4-2013 to date.
  • Head of the Concrete Unit, Materials Department, LNEC, 13-9-2010 a 30-4-2013.
  • Senior Research Officer, LNEC, 06-9-2006 to date.
  • Research Officer, LNEC, 16-7-1999 a 06-9-2006.
  • Research Assistant, LNEC, 02-11-1992 a 16-7-1999.
  • Research Trainee, L NEC, 08-1-1990 a 02-11-1992.
  • Member of the following Technical Committees:
    • RILEM TC RSC - Recommendations for Use of Superabsorbent Polymers in Concrete Construction – (2014 - )
    • RILEM TC 225-SAP - Application of Super Absorbent Polymers in concrete construction (2008 – 2014);
    • ONS / ATIC (CT 104) National Technical Commission of Concrete

Areas of Research / Interest

  • Special concretes.
  • Cementitious materials rheology.
  • Concrete durability

Research and Professional Activity

  • Special concretes development, LNEC Planned Research (2014-2020).
  • Light structural and non-structural cementitious elements with improved energy efficiency, LNEC Planned Research (2014-2020).
  • Concrete deterioration due to expansive reactions – diagnosis and prognosis, LNEC Planned Research (2014-2020).

Relevant Publications

  • Roller Compacted Concrete – composition and characteristics (Portuguese); LNEC, 2004.
  • Large Displacement Elastoplastic Analysis of Space Trusses (Portuguese), IST 1991.
  • Internal Expansive Reactions in Concrete Structures – Deterioration of the mechanical properties, 2nd Int. Conf. of the International Journal of Structural Integrity – IJSI 2014. Funchal, Portugal, 10p, 2014.
  • Preplaced-aggregate concrete with self-compacting mortar. On site world premier applications; 1st Int. RILEM Conf. on Rheology and Processing of Construction Materials and 7th RILEM Conf. on Self-Compacting Concrete – SCC 2013. Paris, 8p, 2013.
  • Influence of Chemical Admixtures and Environmental Conditions on Initial Hydration of Concrete, 7th Int. RILEM Conf. on Cracking in Pavements 20 ‐ 22 June, Delft, The Netherlands, 625-634, 2012.
  • Behavior of mortars with different dosages of shrinkage reducing admixtures, ACI SP-239-6, 77-92, 2006.
  • Effect of Shrinkage Reduction Admixtures on the Pore Structure Properties of Mortars, Materials and Structures, V. 19, May, 179-187, 2006.
  • Effectiveness of shrinkage reduction admixtures on cracking of mortar specimens – RILEM PRO 46, Int. RILEM-JCI Seminar on Concrete Durability and Service Life Planning (ConcreteLife’06) 14-16 March, Ein-Bokek, Dead Sea, Israel, 214-224, 2006
  • Effectiveness of Shrinkage Reduction Admixtures on Different Concrete Mixtures”, ACI - SP 217-20, 299-310, 2003.
  • Performance of Concrete with an Intended Working Life of 50 Years – ACI - SP 212-54, 871-890, 2003.
  • A Contribution to the Development of Performance-Related Design Methods – RILEM PRO 29, Life Prediction and Aging Management of Concrete Structures 2nd International RILEM Workshop, Paris, 5-6 May, 223-236, 2003.
  • Performance of Concrete with an Intended Working Life of 50 Years – ACI - SP 212-54, 871-890, 2003.
  • Characterizations of fresh concrete in order to evaluate the joints between layers, Proceedings of the fourth international symposium on Roller Compacted Concrete Dams, 17-19 Nov., Madrid, Spain, A.A. Balkema Publishers, p. 849-852, 2003.
  • The influence of consistence of RCC in the quality of the joints between layers, Proceedings of the 2002 International Conference on Roller Compacted Concrete Dam Construction in Middle East, Jordan University of Science and Technology, April 7-10, Irbid Jordan, 294-304, 2002.
  • A low cost self-compacting concrete, Proceedings of The Second International Symposium on Self-Compacting Concrete, 23-25 October, University of Tokyo, Japan, 339-348, 2001.
  • Roller compacted concrete – tensile strength of horizontal joints, Materials and Structures, Vol. 34, August-September, 413-417, 2001.
  • Study on High Performance Roller Compacted Concrete, Materials and Structures, Vol. 33, July, 398-402, 2000.

Other scientific and technical Activities

  • Paper reviewer for the following scientific journals: Materials and Structures; Cement and Concrete Composites; Construction and Building Materials; Journal of Building Engineering; European Journal of Environmental and Civil Engineering; Portuguese Magazine on Structural Engineering (RPEE); Construction Magazine (Portuguese); Civil Engineering (Portuguese).
  • Substitute of the Technical Responsible for the certification of cement and fly ash, within LNEC Notified Body functions.
  • Support to the building and construction materials industry.
  • Standardisation activity in the area of concrete and its constituents.
  • Member of the organizing committee and / or the scientific committee of scientific events.

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