| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Outline of Final Research Achievements |
This study includes a proposal of a stress measurement method using a stress concentration factor around the circular hole located in a prestressed concrete (PC) member. In this study, the strain distribution in the mortar and concrete was investigated experimentally through compressive loading tests and expansion pressure tests using a newly developed small cylindrical jack. A prototype of the small jack has a cylinder in which 10 mm of the diameter and 100 mm in the length. The experimental results of loading tests were compared with the analysis that is based on the theory of elasticity and the thick-wall cylinder theory. In addition, in order to evaluate the prestressing force in the PC members damaged due to the Alkali-Silica Reaction (ASR) by using the proposed method, the mechanical properties of concrete having the ASR-induced cracks, especially the elastic modulus and the Poisson’s ratio.
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