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One Axial Tensile Restraint Test

H-4, the one that the expansive additive was mixed with H-4, and the ordinary concrete were compared.

Load and Strain relations

If contraction before loading is small, it grows more than load-deformation curve of the reinforced concrete unit. But, if contraction before loading is the larger, a curve that is smaller than load-deformation curve is drawn. As a result, the effect that mixed the expansive additive's having been confirmed by the high-strength concrete, and being confirmed there decreased the shrinkage of contraction before loading.