Abstract
Recently, cracks have been found in a few prestressed concrete (PC) structures at early ages in Japan and it was determined that the cracks were caused by large drying shrinkage of concrete. In the current design standards, the relationship between the shrinkage strain of actual structures and that of small test specimens obtained by the Japanese Industrial Standards (JIS) test method has not been clarified. Therefore, large test specimens whose sizes are the same as actual PC box girders were constructed and the drying shrinkage strain was measured over an extended period of time. These measurements provided an understanding of what happens in the actual structures, and a clue to solve the problem due to large drying shrinkage strain was gained. In addition, the validity of the measurements was verified by the analysis based on the moisture diffusion in concrete.
| Original language | English |
|---|---|
| Article number | e446 |
| Journal | Sustainable Construction Materials and Technologies |
| Volume | 2013-August |
| Publication status | Published - Jan 1 2013 |
| Event | 3rd International Conference on Sustainable Construction Materials and Technologies, SCMT 2013 - Kyoto, Japan Duration: Aug 18 2013 → Aug 21 2013 |
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ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Mechanics of Materials
- Materials Science(all)
Cite this
A study of drying shrinkage for securing durability of PC bridges. / Kawanaka, Ryoichi; Kobayashi, Hitoshi; Sakimoto, Tsutomu; Ayano, Toshiki; Miyagawa, Toyo.
In: Sustainable Construction Materials and Technologies, Vol. 2013-August, e446, 01.01.2013.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - A study of drying shrinkage for securing durability of PC bridges
AU - Kawanaka, Ryoichi
AU - Kobayashi, Hitoshi
AU - Sakimoto, Tsutomu
AU - Ayano, Toshiki
AU - Miyagawa, Toyo
PY - 2013/1/1
Y1 - 2013/1/1
N2 - Recently, cracks have been found in a few prestressed concrete (PC) structures at early ages in Japan and it was determined that the cracks were caused by large drying shrinkage of concrete. In the current design standards, the relationship between the shrinkage strain of actual structures and that of small test specimens obtained by the Japanese Industrial Standards (JIS) test method has not been clarified. Therefore, large test specimens whose sizes are the same as actual PC box girders were constructed and the drying shrinkage strain was measured over an extended period of time. These measurements provided an understanding of what happens in the actual structures, and a clue to solve the problem due to large drying shrinkage strain was gained. In addition, the validity of the measurements was verified by the analysis based on the moisture diffusion in concrete.
AB - Recently, cracks have been found in a few prestressed concrete (PC) structures at early ages in Japan and it was determined that the cracks were caused by large drying shrinkage of concrete. In the current design standards, the relationship between the shrinkage strain of actual structures and that of small test specimens obtained by the Japanese Industrial Standards (JIS) test method has not been clarified. Therefore, large test specimens whose sizes are the same as actual PC box girders were constructed and the drying shrinkage strain was measured over an extended period of time. These measurements provided an understanding of what happens in the actual structures, and a clue to solve the problem due to large drying shrinkage strain was gained. In addition, the validity of the measurements was verified by the analysis based on the moisture diffusion in concrete.
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UR - http://www.scopus.com/inward/citedby.url?scp=85049750837&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:85049750837
VL - 2013-August
JO - Sustainable Construction Materials and Technologies
JF - Sustainable Construction Materials and Technologies
SN - 2515-3048
M1 - e446
ER -