Prediction of Crack Width Due to Corrosion of PC Tendon in Prestressed Concrete Structures
Abstract: Corrosion expansion
of prestressed concrete (PC) tendon affects mainly crack width on surface of
concrete. This paper simulates corrosion expansion of PC tendon in concrete.
Elastic expansion model is utilized for growing of corrosive product as a
result of oxidation reaction on reinforcement. In reality, corrosive product
penetrate freely into concrete. In order to cover this behavior, elastic
expansion is then enhanced its capability in numerical simulation. Furthermore
the proposed model used an apparent expansion is adopted to predict width of corrosion
crack. Laboratory test is conducted to verify numerical result. Single and
multi PC tendons embedded in concrete attacked by corrosion is investigated.
Finally, prediction of crack width on surface of concrete due to corrosion of
multi layers of PC tendons in the real pretensioned PC girder are conducted
using the proposed model. The results show that corrosion crack width of the
proposed model meets the real pretensioned
Keywords: Corrosion expansion;
corrosive product; elastic expansion; numerical simulation; PC tendon
Author: Maryoto A., Shimomura
T
Journal Code: jptsipilgg150014
