CAJ | 학술논문

文章采用橡胶粉等体积替代砂（10％、20％、30％，分改性橡胶粉和未改性橡胶粉），分析不同纤维掺量、砂率和水灰比对橡胶粉嵌锁密实水泥混凝土抗弯拉强度的影响，根据方差分析结果，采用不同模型拟合抗弯拉强度随试验因子的变化。试验结果表明：改性橡胶粉 RICC混凝土的抗弯拉强度大于未改性橡胶粉RICC混凝土；橡胶粉掺量和种类、纤维掺量和水灰比对RICC混凝土抗弯拉强度具有显著性影响；而砂率对RICC混凝土抗弯拉强度的影响不显著；采用抛物线形模型可较好拟合RICC混凝土抗弯拉强度随改性橡胶粉和纤维的变化关系；RICC混凝土抗弯拉强度与水灰比的变化关系采用线性模型拟合，线性关系良好。
문장채용상효분등체적체대사（10％、20％、30％，분개성상효분화미개성상효분），분석불동섬유참량、사솔화수회비대상효분감쇄밀실수니혼응토항만랍강도적영향，근거방차분석결과，채용불동모형의합항만랍강도수시험인자적변화。시험결과표명：개성상효분 RICC혼응토적항만랍강도대우미개성상효분RICC혼응토；상효분참량화충류、섬유참량화수회비대RICC혼응토항만랍강도구유현저성영향；이사솔대RICC혼응토항만랍강도적영향불현저；채용포물선형모형가교호의합RICC혼응토항만랍강도수개성상효분화섬유적변화관계；RICC혼응토항만랍강도여수회비적변화관계채용선성모형의합，선성관계량호。
A certain proportion sand ,i .e .10% ,20% and 30% ,is replaced by twe kinds of rubber ,i . e .modified rubber and unmodified rubber ,with equal volume .The influence of fiber content ,sand ra‐tio and water‐cement ratio on the flexural‐tensile strength of rubber interlocking‐dense cement con‐crete(RICC) is analyzed .According to the results of the analysis of variance ,different model is used to simulate the change tendency of flexural‐tensile strength along with different factors .The results show that the flexural‐tensile strength of the modified rubber RICC concrete is greater than that of the unmodified rubber RICC concrete .Rubber content and varieties ,fiber content and water‐cement ratio have significant effect on RICC flexural‐tensile strength .But the effect of sand ratio on RICC flexural‐tensile strength is not significant .Parabolic model can be used to fit the change of RICC flexural‐ten‐sile strength along with modified rubber powder and fiber better .RICC flexural‐tensile strength has a good linear relationship with water‐cement ratio .