CONCRETE LIBRARY OF JSCE NO.4, DECEMBER 1984
STUDY ON SHRINKAGE CRACK IN REINFORCED CONCRETE DECK SLABS OF HIGHWAY BRIDGES
(from Proceeding of JSCE, No.340, 1983-12)
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Hirosuke IMAI Kiyoshi OKADA
Takayuki KOJIMA Yoshihisa MIZUMOTO
SYNOPSIS
One of the more serious problems in the maintenance and repair in steel highway bridges is that of the deterioration of reinforced concrete deck slabs through cracking. ln this study it was shown clearly by three years of field investigation of the slabs before service that the mechanism of crack occurrence was closely related to the shrinkage of concrete. An analytical method to predict shrinkage cracking was developed, and some improvements of materials and mix proportioning of concrete to prevent shrinkage cracks were examined.
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