Nine universities in Scotland, which include Aberdeen University, have closed or partially closed some of their buildings after potentially-dangerous concrete was found.
Reinforced autoclaved aerated concrete (Raac) was discovered in areas including lecture theatres, science labs and student unions.
In some cases, tutorials have had to be moved to different sites on the campus.
Meanwhile, Scotland's First Minister has said the government knew about Raac for "not just many months, actually, for years".
Humza Yousaf also told First Minister's Questions yesterday that the number of schools known to contain Raac has increased to 40, with fire stations and NHS buildings also affected.
"Each school, given the Institute of Civil Engineers guidance, will then choose to take the appropriate mitigation," he said.
Inspection
Stirling University Student Union had to partially shut following a structural safety inspection on Wednesday.
The BBC says the closure will affect the upper floor of the building.
Meanwhile, an NHS Scotland review has identified 254 of its buildings that "have two or more characteristics which are consistent with the presence of Raac".
During FMQs questioning by Scottish Labour leader Anas Sarwar, Mr Yousaf said a list of affected schools should be made available by the end of the week, with a ministerial statement to follow.
The first minister said the government was working with local authorities and that discussions would be held with the UK Government over extra funding to address the problem.