Nick Fay, head of Bitumen at Vitol, said: "We applied to become a member of Eurobitume so we could access their wealth of valuable technical and HSE research, studies and guidance."
Eurobitume director-general Siobhan McKelvey said: "I am delighted to welcome Vitol into our organisation. With an active bitumen refining and marketing business in Europe, they meet the criteria perfectly for being a Core Member of Eurobitume.
"They bring a wealth of additional experience and expertise, which will be invaluable to the Association and our other members in helping shape the future of the bitumen industry in Europe."
Eurobitume was founded in 1969 to act as a central, unified voice for bitumen producers and marketers across Europe.