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- W2318759506 abstract "High-strength high-performance concrete containing silica fume may easily cause cracking at early age. In this research, self designed edge restrained plate specimens of 600 mm x 600 mm x 100 mm in dimension were cast with silica fume concrete and embedded optic fiber sensor (SOFO) for tests, which include image analysis, crack development observation, and continuously detection of the shrinkage deformation of concrete at early age. Test results indicated that the shrinkage deformation of concrete at the age of 1–3 hours is 0.01 mm, equal to a strain of 20 x 10–6 (mm/mm) or a tensile stress of about 2.4 MPa, so the plastic cracking may occur within one hour. The shrinkage deformation of concrete at the age of 3–12 hours increased to a strain of 278 x 10–6 (mm/mm), indicating a relatively great growing rate of crack development. After the age of 12 hours, the volume change tends to a stable situation that the shrinkage crack will occur only when the shrinkage stress becomes greater than the corresponding tensile strength of concrete." @default.
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- W2318759506 date "2008-10-14" @default.
- W2318759506 modified "2023-09-25" @default.
- W2318759506 title "Research on the Shrinkage Deformation and Crack Development of High-Strength High-Performance Concrete Containing Silica Fume" @default.
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- W2318759506 doi "https://doi.org/10.1061/41016(314)311" @default.
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