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Presidents & Secretariat

François Chaignon - President

Dr. Juan Jose Potti - Vice President

François Chaignon worked as Civil Engineer at Ecole Nationale des Ponts et Chaussées.
He retired in September 2018 from COLAS after working for them over 40 years. For the last 7 years he has worked as Technical Director for COLAS France.For twenty years he has worked with international technical affairs. Twelve years in North America and 8 years as technical director for COLAS North America focusing on pavement design, innovations, and products development (bitumen emulsion, asphalt mixtures, road construction in general).
François Chaignon was president of the French national standard mirror committee on asphalt mixtures and also president of SFERB/ Routes de France (emulsion producers in France)
He is a member of TC 227 WG1, TC 227 WG1 TG3, TC 336 and member of the board of Routes de France. François Chaignon was convener of TC 227 WG2 TG2 (surface dressing). He is also in charge of the international committee Routes de France.

Mr. Chaignon became member of the EAPA Executive Committee and EAPA Vice-president in 2018.

Juan José Potti has beenTechnicalDirector atEurovia(Spain) from1984 to 2006, Manager of the Eurovia Pôle d’Émulsions since its foundation until 2006 and Project Coordinator for several R&D projects funded by the European Commission, such as OPTEL BRITE EURAM IV (1996-2000) and SCORE FP5 (2002-2006), among others.
In April 2006 he became the General Manager of the Spanish Association of Manufacturers of Asphalt Mixtures (Asefma); in March 2012 he was elected President and therefore became the Executive President of Asefma @asefma_esa position he currently holds.
From 2008 to 2013 he was Project Coordinator of the most important R&D Bituminous Mixtures project founded by the Centre for Technological and Industrial Development (CDTI)(with a budget of more than 28 million euros) entitled Proyecto FENIX,

Juan José Potti has been President of the Spanish Technical Association of Bituminous Emulsions (ATEB) @atebuntil 2006 and an active member of several standardization CEN Committees, such as TC2227WG1, TC227WG2TG2 and TC336WG1. In 2018 he was named Honorary Member of ATEB.

Since April 2009 he has been the Director of the technical journal “Asfalto y Pavimentación”.
In 2009 he started digital activities on Linked in and in February 2011 on Twitter as @jjpotti; today he has more than 8,000 followers.
Currently he is Vice-President of the Spanish Road Association (AEC) @AECarretera, and President of the Spanish Road Technology Platform (PTC) @PTCarretera.
Juan José Potti became a member of the EAPA @eapa_orgExecutive Committee in 2009, he was awarded with the EAPA Asphalt Advocate of the year award in 2018 and was elected Vice-President of EAPA in June 2019.

You can get in touch with him via e-mail:

Dr. Carsten Karcher - Secretary General

Carsten Karcher graduated from the Karlsruhe Institute of Technology (KIT) in Germany the former University of Karlsruhe as a civil engineer. In 2004 he got his Doctors Degree at the same university. From 1999 on he was research assistant, head of the Testing Center according to German guidelines and at the end head of the department “Highway Construction Technology” at KIT. He has a strong bonding to asphalt material and a founded understanding of its technical, environmental and social issues. As head of the department he acquired and conducted research projects mainly in the field of asphalt pavements. Dr. Karcher is familiar with European projects as well as with print media and TV.

Carsten Karcher started on July, 1st 2013 as the Director of EAPA and is dealing with Health, Safety and Environmental issues and Political items. On 1st January 2019 Dr. Karcher became Secretary General of EAPA. You can get in touch with him via e-mail:

Dr. Breixo Gómez-Meijide - Technical Director

Breixo Gómez-Meijide graduated in Civil Engineering at the University of A Coruña (Spain). After carrying out pre-doctoral stays in different countries, such as Singapore, Italy and UK, he obtained a PhD in 2015 at the University of A Coruña and received the Doctorate Extraordinary Award for his thesis on sustainable asphalt materials. Then, he moved to the UK, where he worked as a Research Fellow at the Nottingham Transportation Engineering Centre (University of Nottingham). There, he was involved in national and European projects (e.g. HEALROAD on self-healing pavements) and supervised four PhD Students on different topics related to sustainable and resilient roads.

Breixo joined EAPA in October 2018 as Technical Director and is the focal point of EAPA for technical issues. He is the secretary of the EAPA Technical Committee and is also involved in Health, Safety and Environment items. He is also in charge of representing the asphalt industry in the CEN Committees related to asphalt and actively contributing in European standardisation processes. You can get in touch via e-mail: