||Government publication, National government publication
|All Authors / Contributors:
Turner-Fairbank Highway Research Center.; Blunt and Evans Consulting Engineers.
"Blunt and Evans Consulting Engineers."--Technical rept. standard title page.
||ix, 176 pages : illustrations ; 28 cm
Test specimens and procedures --
Fatigue strength of series A tensile splices --
Fatigue strength of series B beam splices --
Fatigue strength of series B beam cover plates --
Static strength of series C tensile splices --
Static strength of series D beam splices --
Creep strength of series E tensile specimens --
Findings and conclusions --
This study examined the feasibility of adhesive bonding and bolting tensile splices, beam flange splices and cover plates with ends bolted. The specimens were subjected to fatigue and static loading. The results showed that bonding the contact surfaces significantly increased the fatigue life of high-strength bolted splices. Bonding cover plates increased the fatigue life by a factor of 20 over that of conventionally welded cover plates. While bonding greatly increased the slip resistance of bolted joints, it had no effect on the ultimate strength of the joint. In an additional series of tests it was found that the creep strength of the adhesive bond decreases with time, particularly in outdoor environments when the ambient temperatures are high. Successful application of bonding technology requires careful adhesive selection for the intended service environment, characterization of adhesive properties, and detail design that limits cleavage and peel stresses in the bond line.