Epoxy adhesive is applied in these joints for the following purposes according to International Road Federation (1977):
(i) It seals up the joints completely between precast concrete segments to protect the prestressing tendons;
(ii) By filling voids and irregularities along the segment joints, it helps reduce stress concentrations otherwise it will be developed; and
(iii) It helps in transferring of shear between the joints in case a large single shear key is used.
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This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.
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