Gagnlegir tenglar

• American Concrete Institute 
• American Society of Civil Engineers, ASCE
• British Cement Association, BCA
• Cement och Betong Institutet - CBI
• The Concrete Society
• ConTec
• The Institution of Civil Engineers, ICE
• International Association for Bridge and Structural Engineering, IABSE
• Nordic Concrete Federation
• Rilem
• SINTEF
• Steinsteypufélag Danmerkur
• Steinsteypufélag Finnlands
• Steinsteypufélag Noregs
• Steinsteypufélag Svíþjóðar
• Teknologisk Institut, Beton
• VTT Building Technology, Technical Research Centre of Finland