This research aims to study the effect of adding inorganic waste (Marble powder -
glass powder) on the volumetric and longitudinal shrinkage curves at unsaturated polyester
resin, tests showed that samples exposed to volumetric and longitudinal shr
ink and
occurrence of consecutive gradients in volumetric shrinkage values. Whatever the ratio of
the added materials (marble powder - the glass powder) will effect the behaviour of the
unsaturated polyester hardening, that means it will effect the volumetric shrinkage.
It is necessary to study the volumetric and longitudinal shrinkage values because
they affect the product size to be dealt with, this value should be taken into account in the
design so that should be added this amount of volumetric shrinkage to the dimensions to
designed templates in order to avoid potential variations occurring in the final product.
Preliminary results showed that the value of volumetric shrinkage got up (5%) and the
curves tend to stability, almost three weeks after the initial hardening incident.
