ABSTRACT

The special structure of fibre reinforced cements and the nature of the fibres incorporated may lead to long-term effects which are different from those experienced in conventional concretes and mortars. These effects can result in marked changes in the properties of the composite, either strengthening or weakening. Although each system can undergo unique changes invoked by processes characteristic to it, there are several underlying general principles which are relevant to all FRC [1] and they will be highlighted in this section. The application of these principles for each individual system will be dealt with in the relevant chapter dealing with the particular fibre system (i.e. Chapters 7-11 ).