CAJ | 학술논문

主要研究了不同掺量的聚丙烯纤维对珊瑚混凝土的立方体抗压强度、劈裂抗拉强度和抗折强度、弹性模量的影响，对比没有掺入纤维与掺入纤维后珊瑚混凝土的破坏形态异同。试验结果为：聚丙烯纤维的加入使抗压、劈裂抗拉强度以及抗折强度都得到不同程度的提高，在一定范围内，当纤维掺量为2 kg/m3时，抗压与劈裂抗拉强度增长率分别提高6.3%和16.5%，抗折强度最高达到4.5 MPa，并且聚丙烯对珊瑚混凝土劈裂抗拉强度增强效果比抗压强度显著。聚丙烯纤维珊瑚混凝土弹性模量值低于普通混凝土，却高于轻骨料混凝土。
주요연구료불동참량적취병희섬유대산호혼응토적립방체항압강도、벽렬항랍강도화항절강도、탄성모량적영향，대비몰유참입섬유여참입섬유후산호혼응토적파배형태이동。시험결과위：취병희섬유적가입사항압、벽렬항랍강도이급항절강도도득도불동정도적제고，재일정범위내，당섬유참량위2 kg/m3시，항압여벽렬항랍강도증장솔분별제고6.3%화16.5%，항절강도최고체도4.5 MPa，병차취병희대산호혼응토벽렬항랍강도증강효과비항압강도현저。취병희섬유산호혼응토탄성모량치저우보통혼응토，각고우경골료혼응토。
This paper mainly study the influence of different polypropylene fiber contents on compressive strength、splitting tensile strength and flexural strength、modulus of elasticity of the coral concrete.Compare with the differences of failure form of coral concrete be-tween the blocks which add polypropylene fiber or not.The results show that join the polypropylene fiber can increase the strength of the compressive strength、tensile splitting and flexural strength.Within a certain range,when the fiber vomule is 2 kg/m3,both the compressive and splitting tensile strength respectively improve 6.3% and 16.5%,flexural strength up to 4.5 MPa.And polypropylene fiber make the splitting tensile strength of the coral concrete more effectively than the compressive strength.Elastic modulus value of the coral concrete which add polypropylene fiber is lower than normal concrete,higher than the lightweight aggregate concrete.