n Journal of the South African Institution of Civil Engineering = Joernaal van die Suid-Afrikaanse Instituut van Siviele Ingenieurswese - Spherical void formers in concrete slabs : discussion




I read this excellent paper with great interest since I have been consulted in a couple of instances where flat plate slabs, containing spherical void formers, had experienced deflections far in excess of their designers' expectations. These slabs had been constructed in arid areas with very low average relative humidity. There may be several factors that contribute to greater than anticipated long-term deflections


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