CAJ | 학술논문

抗裂性是衡量混凝土性能的重要指标。文章以混凝土脆性系数与特征长度作为混凝土抗裂性评价指标，研究了短切碳纤维掺量、复掺粉磨钢渣掺量混凝土抗裂性的影响。结果表明，适量单掺短切碳纤维可降低混凝土的脆性系数和特征长度值，有效改善混凝土的抗裂性能；粉磨钢渣可改善混凝土的组成和内部结构，对碳纤维可起到分散作用，进一步降低碳纤维混凝土的脆性系数和特征长度值，提高碳纤维混凝土的抗裂性能。
항렬성시형량혼응토성능적중요지표。문장이혼응토취성계수여특정장도작위혼응토항렬성평개지표，연구료단절탄섬유참량、복참분마강사참량혼응토항렬성적영향。결과표명，괄량단참단절탄섬유가강저혼응토적취성계수화특정장도치，유효개선혼응토적항렬성능；분마강사가개선혼응토적조성화내부결구，대탄섬유가기도분산작용，진일보강저탄섬유혼응토적취성계수화특정장도치，제고탄섬유혼응토적항렬성능。
Crack resistance is an important index of evaluating concrete performance. Using brittlesness coefficient and characteristic length as evaluation index, we study the effect of short carbon fiber adulterate amounts and ground steel cinder adulterate amounts on concrete crack resistance. The results showed that mixing short carbon fiber moderately can reduce concrete＇s brittleness coefficient and characteristic length and improve the crack resistance of concrete effectively. Ground slog can improve the constitution and internal structure of concrete, disperse carbon fire, and help to decline brittleness coefficient and characteristic length of carbon fiber concrete and then improve the crack resistance of high carbon fiber.