CAJ | 학술논문

通过向4种不同砂率的水泥砂浆中分别掺入3种不同百分比的铝酸盐水泥进行对比分析试验，找出最佳铝酸盐水泥掺量。在此基础上，为了进一步改善砂浆的力学性能，通过向早强砂浆中掺入6种不同体积掺量的聚丙烯纤维，进行对比分析试验，提出聚丙烯纤维的最佳掺量。结果表明：当铝酸盐水泥掺量为5％时，聚丙烯纤维体积掺量在0?2％～0?4％时，基体3d抗折、抗压强度可分别达到12?1MPa和57?3MPa，且强度后期不倒缩，28d抗压强度可达到91?7MPa。该体系的SEM微观图貌显示，水泥水化充分，结构致密无裂纹。
통과향4충불동사솔적수니사장중분별참입3충불동백분비적려산염수니진행대비분석시험，조출최가려산염수니참량。재차기출상，위료진일보개선사장적역학성능，통과향조강사장중참입6충불동체적참량적취병희섬유，진행대비분석시험，제출취병희섬유적최가참량。결과표명：당려산염수니참량위5％시，취병희섬유체적참량재0?2％～0?4％시，기체3d항절、항압강도가분별체도12?1MPa화57?3MPa，차강도후기불도축，28d항압강도가체도91?7MPa。해체계적SEM미관도모현시，수니수화충분，결구치밀무렬문。
Through the comparative analysis of the test in which three kinds of different percentage of aluminate cement is added to four different sand ratio of cement mortar, to find out the best content of aluminate cement. On the basis, in order to further improve the mechanical properties of mortar, through the comparative analysis of the test in which six kinds of volume content of polypropylene fiber is added to the early strength cement mortar, to find out the best content of polypropylene fiber. The results show that the fiber volume content is 0?2% ~0?4% when the cement content is 5%, the 3 day flexural and compressive strength of cement mortar can reach 12?1MPa and 57?3MPa. And the late strength don’ t retract, 28 day compressive strength can reach 91?7MPa. The SEM microscopic pictures display that cement hydration is adequate,the structure is compact and crack is free.