A development of robust fiber reinforced cementitious composites under multi directional stress field and its application

本研究旨在开发一种在多向应力场作用下具有高韧性、多裂纹的纤维增强水泥基复合材料。在高强混凝土中加入粗骨料和钢纤维，以改善开裂后的抗剪性能。通过材料尺度上的实验研究，提出了合适的夹杂物配比。为了将该材料应用于结构，进行了梁的静力和疲劳试验，以验证其适用性。

This research was conducted to develop a new robust fiber reinforced cementitious material under the multi directional stress field based on HPFRCC that shows high ductility in tension with multiple cracking. Coarse aggregate and steel fiber were put in the HPFRCC to improve the shear performance after the cracking. Through the experimental investigations at the material scale, appropriate ratio of the inclusions was proposed. To apply this material to structure, static and fatigue tests of beam were carried out to verify the applicability.