| Title |
Bond Properties of Nonpolar Macro Synthetic Fiber in Cement Mortar with Maleic Anhydride Grafted Polypropylene Powder |
| Keywords |
bond properties;maleic anhydride grafted polypropylene powder(mpp);interface toughness;pullout behavior;nonpolar macro synthetic fiber;부착특성;무수말레인산이 그라프트된 폴리프로필렌 분말;계면인성;인발거동;무극성 마크로 합성섬유 |
| Abstract |
This study evaluated the effects of maleic anhydride grafted polypropylene powder (mPP) contents on the bond properties of cement mortar and nonpolar macro synthetic fibers (macro synthetic fiber). Dog-bone bond tests were performed to evaluate the bond performance of macro synthetic fiber in cement mortar with varying amounts of mPP (0%, 5%, 10%, 15%, 20%, 25%, 30% of cement weight). The bond properties (pullout behavior, pullout load and interface toughness) of macro synthetic fiber in cement mortar increased as the mPP contents was increased. The bond properties increased with the mPP contents. The microstructure of macro synthetic fiber surface was examined after the pullout test to analyze the frictional resistant force according to mPP contents during the pullout process of macro synthetic fiber in cement mortar. The scratched of macro synthetic fiber increased with the mPP contents. |