Development and evaluation of high strength and the high toughness strain-hardening cementitious composite

本文的目的是研究应变硬化水泥基复合材料的材料设计，它在拉应力作用下具有高的强度和韧性。为此，有必要选择合适的纤维种类和基质配合比，明确条件的构成。本研究以钢纤维和合成纤维为材料，研究了纤维混杂对小细胞肺癌单轴拉伸性能的影响。结果表明，通过掺入适量的钢纤维和合成纤维，可以提高混凝土的抗拉强度和韧性。最后，掺入足够的钢纤维，降低水胶比，通过分散高强度来依赖钢纤维来提高复合材料的拉伸强度和韧性。

The purpose of this paper is to develop the material design of Strain Hardening Cementitious Composites (SHCC) which has high strength and toughness under tensile stress. For this purpose, it is necessary for appropriate kinds of fiber and mix proportion of matrix to be chosen and for constitution of conditions to be clarified. The present study aims to clarify combined effects of fiber cocktail on the tensile properties under uniaxial tensile stress of SHCC using steel fibers and synthetic fibers. In the result, firstly, it was revealed that tensile strength and toughness can be enhanced by mixing steel and synthetic fiber of appropriate quantity. Finally, mixing enough steel fiber and lowering the water-binder ratio, the tensile strength and toughness of the composites increases by dispersing high strength to depend on steel fiber.