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US: Solidia Technologies has appointed Padmaja Parakala as its director of research and development.

She holds 20 years of experience working in corporate material science, most recently working for Innovantage, a professional services firm she founded that has worked with Solidia Technologies and the Boral Innovation Factory. Prior to this she worked as the principal scientist and product performance leader at James Hardie Building Products in Australia. Earlier in her career she also worked for GE at the John F Welch Technology Center.

Parakala holds s PhD in material engineering from the Queensland University of Technology and master’s degrees from the Indian Institute of Technology in Kharagpur and the Indian Institute of Technology in Varanasi.

Switzerland: Holcim has appointed Toufic Tabbara as Region Head North America and a member of the group executive committee. He succeeds René Thibault, who has decided to leave the company.

Tabbara was most recently working as the chief executive officer for US Cement. He joined the group in 1998 as Director Strategy & Development in the US and has led Holcim’s ready-mix concrete, aggregates and cement businesses in the US, Canada, Egypt, Jordan, Lebanon and Algeria.

He holds a Master of Business Administration from the Thunderbird School of Global Management in Arizona, US and a Bachelor of Business Administration from the American University of Beirut in Lebanon.

Brazil: Votorantim Cimentos has appointed Bianca Nasser as its chief financial officer (CFO) and investor relations director. She succeeds Osvaldo Ayres Filho, who will remain in the company as the Director of Cement, Logistics and Adjacent Business Operations.

Nasser worked for Petrobras from 2002 to 2019, eventually becoming the Executive Manager of Corporate Finance and Treasury. She subsequently became the CFO and investor relations officer at BNDES. She is a graduate in economics from the Universidade Federal do Rio de Janeiro and holds a master’s degree in administration and finance from the Pontifical Catholic University of Rio de Janeiro.

Turkey: Medcem has appointed Ruhi Bilge as the director of its integrated Mersin cement plant. He has worked in the cement sector for over 20 years, most recently holding the position of production director for Kümaş Refractories. Prior to this he worked for cement companies including Bursa Çimento, Vicat’s subsidiary Baştaş Çimento and Norm Cement.

Canada: Concrete Economics managing director and long-time figure in the North American cement industry Colin Sutherland has died. Colleagues from throughout his 30 year-career spanning Canada, France and the US have been posting memories of Sutherland. Olsen Management Consulting president and Sutherland’s former Lafarge and Votorantim Cimentos colleague Richard Olsen said “We've lost a dear friend and long-time colleague. Colin was highly respected and valued in the cement industry and had developed a depth of knowledge and insight that was unique.” He continued “Colin's infectious laughter, ever-positive attitude and charm endeared him to many. He'll be sorely missed.”

Before joining Concrete Economics in May 2021, Sutherland was president and co-founder of SC Market Analytics and a board member of US Concrete. Previous positions also included vice president, commercial strategy, for Votorantim Cimentos North America; vice president, business development, integration and strategy for Holcim US and vice president, cementitious materials for Lafarge Cement. Between 1995 and 2001, Sutherland served as director of corporate development for Blue Circle North America, where he subsequently became group integration director following its merger with Lafarge Cement.