Investigations about the deformation properties (shrinkage and swelling) of oil shale ash were carried out in co-operation with the Tallinn Technical University (Estonia) and Technical Research Centre of Finland. Deformation behaviour of concrete with two types of burnt oil shale cements in fresh and hardened state were studied. The special cement was made from Estonian Portland cement clinker, natural gypsum and an expansion additive, burnt oil shale, which is a by-product of energy plants. The comparison was made by using shrinkage reducing additive. Conclusions about expansion of concrete stored in water, about drying shrinkage of hardened concrete and about total strain after water storage and followed storage in dry environment (50 % RH) were given.
|Title of host publication||Nordic Concrete Research|
|Subtitle of host publication||Research projects 1999|
|Publication status||Published - 1999|
|MoE publication type||Not Eligible|