Abstract
Repair materials have been produced using an unsaturated polyester resin (UPR) as a matrix of a binder. Other ingredients are sand, cement and fly ash. No water is added to the mixture, so both the cement and fly ash only act as fillers. The UPR content is in the range of 50-60% by weight of total filler (cement plus fly ash). Their flexural performance has been characterized in term of the load-deflection behaviour, modulus of rupture, flexural modulus and stiffness. The results show that the flexural capacity of these materials at early age is at least 20 MPa, but they tend to have a lower elastic modulus. At early age, the higher amount of UPR content tends to gain a higher flexural characteristic. However, at later age there is a little influence of UPR content.
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