Akihiko Suda
Effects of drying shrinkage of concrete on the time-dependent deformation and crack behavior of construction.
Takumi Shimomura
There are creep and drying shrinkage in time-dependent deformation of concrete. Creep and drying shrinkage of concrete caused different problem of construction. This research studied experimentally and analytically the three themes on creep and drying shrinkage.
First theme is effect of drying shrinkage on crack width of reinforced concrete. Crack width is increased by dried shrinkage of concrete. In this context, there are many research of the past. In this theme, it tried to reproduce research of the past, using finite element deformation analysis of cover concrete. As a result, research of the past about effect of drying shrinkage on crack width of reinforced concrete was reproduced. Moreover, cracked surface was drying more than surface of construction.
Second theme is behavior of surface strain when restricted drying shrinkage. Surface strain of concrete has to do with analysis of crack outbreak. In this theme, supposition of analysis was confirmed using experiment that sustain loading test. As a consequence, analysis supposition about crack outbreak was proofed by experiment of sustain loading test.
Third theme is effect of drying shrinkage on compression and tension creep properties, and comparison of both properties. Creep brings about excessive long-term deformation prestressed concrete bridge. In order to elucidate this phenomenon have to grasp exactly properties of compression and tension creep. Therefore in this theme, the unification experiment of compression and tension test was carried out.
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