ABSTRACT
To prestress sulphur concrete has been tried for the first time by Jonas Ekblad, one of the present authors, in his graduation thesis on slats for piggeries, Ekblad (1992). Four slats were put aside for long-term observation of the creep phenomenon in a laboratory environment. They were different in that the anchoring of the prestress strands had been given alternative solutions. So, the creep test gives qualified information as to the absolute and relative levels of the different ways in which prestress strands can be anchored in a sulphur concrete structure. The obvious results are that the direct anchoring is favourable. The indirect anchoring of the strand in a highly protective injected grout gives a higher but limited creep, whereas the no-bond anchoring is unfavourable and can not be used with the present mechanical (‘Paul’) equipment.
