CAJ | 학술논문

通过开展不同体积掺量钢纤维（0，0?5％，1?0％，1?5％，2?0％，2?5％）轻骨料混凝土抗压强度、弯折韧性和抗冲击性能等力学性能试验研究，分析不同掺量钢纤维对轻骨料混凝土各项力学性能的影响规律。试验表明：钢纤维掺入到轻骨料混凝土中后，有助于提高轻骨料混凝土抗压强度，显著改善轻骨料混凝土受压破坏形态；轻骨料混凝土的抗折强度随着纤维掺量的增加而显著改善，并能提高轻骨料混凝土的折压强度比，改善轻骨料混凝土的脆性问题；对轻骨料混凝土的弯折韧性增强作用较为显著，试验发现掺入钢纤维后的轻骨料混凝土弯折韧性比没有掺加钢纤维的轻骨料混凝土显著提高；钢纤维对轻骨料混凝土的抗冲击性能增大幅度较为显著。
통과개전불동체적참량강섬유（0，0?5％，1?0％，1?5％，2?0％，2?5％）경골료혼응토항압강도、만절인성화항충격성능등역학성능시험연구，분석불동참량강섬유대경골료혼응토각항역학성능적영향규률。시험표명：강섬유참입도경골료혼응토중후，유조우제고경골료혼응토항압강도，현저개선경골료혼응토수압파배형태；경골료혼응토적항절강도수착섬유참량적증가이현저개선，병능제고경골료혼응토적절압강도비，개선경골료혼응토적취성문제；대경골료혼응토적만절인성증강작용교위현저，시험발현참입강섬유후적경골료혼응토만절인성비몰유참가강섬유적경골료혼응토현저제고；강섬유대경골료혼응토적항충격성능증대폭도교위현저。
By conducting the experiments of the compressive strength, flexural toughness, impact resistance strength of lightweight aggregate concrete ( LWAC) with differences dosage of steel fiber ( i. e. 0 , 0?5%, 1?0%, 1?5%, 2?0%, 2?5%) , the effect of steel fiber content on the mechanical properties of LWAC was investigated. The results show that the compressive strength of LWAC was improved with the addition of steel fibers, and the incorporation of steel fibers into matrix can improve the failure pattern of LWAC. The flexural strength of LWAC increases with the increasing of steel fiber volume content. Steel fiber can improve the flexural compression strength ratio of LWAC, and can improve brittleness problem of the LWAC. The bending toughness of LWAC enhancement effect is remarkable. One study found that after incorporation of steel fiber, the bending toughness of LWAC has increased more dramatically than that without adding steel fiber. The incorporation of steel fibers can significantly improve the impact resistance of LWAC.