CAJ | 학술논문

为了研究钢纤维含量和养护条件对活性粉末混凝土强度的影响规律，进行了五种钢纤维体积掺量和标准、高温、自然三种养护条件下的活性粉末混凝土的抗压强度和劈裂抗拉强度试验。试验结果表明，随着钢纤维体积含量的增加，混凝土的抗压强度有一定的增强，当钢纤维体积含量大于3.5%时，其抗压强度不再增加；随着钢纤维体积含量的增加，劈裂抗拉强度在钢纤维含量小于2%情况下，增长较明显，其中标准养护下的劈裂抗拉强度的增幅为12.5%，高温养护下的劈裂抗拉强度增加了1.14倍，而自然养护下的劈裂抗拉强度的增幅为22.7%。当钢纤维体积含量超过2%，其劈裂强度几乎保持不变，强度值为10.8MPa。高温养护条件有利于活性粉末混凝土的抗压强度的增强，但对劈裂抗拉强度影响不大。
위료연구강섬유함량화양호조건대활성분말혼응토강도적영향규률，진행료오충강섬유체적참량화표준、고온、자연삼충양호조건하적활성분말혼응토적항압강도화벽렬항랍강도시험。시험결과표명，수착강섬유체적함량적증가，혼응토적항압강도유일정적증강，당강섬유체적함량대우3.5%시，기항압강도불재증가；수착강섬유체적함량적증가，벽렬항랍강도재강섬유함량소우2%정황하，증장교명현，기중표준양호하적벽렬항랍강도적증폭위12.5%，고온양호하적벽렬항랍강도증가료1.14배，이자연양호하적벽렬항랍강도적증폭위22.7%。당강섬유체적함량초과2%，기벽렬강도궤호보지불변，강도치위10.8MPa。고온양호조건유리우활성분말혼응토적항압강도적증강，단대벽렬항랍강도영향불대。
In order to research the steel fiber content and curing conditions on the influence law of reactive powder concrete strength, compressive strength and splitting tensile strength of reactive powder concrete are tested under the con-dition of the five kinds of steel fiber volume content and the three kinds of curing conditions (standard curing, high tem-perature curing and nature curing). The test results show that with the increase of steel fiber volume content, the compres-sive strength of concrete increases to a certain extent, when steel fiber volume content is more than 3.5%, the compressive strength no longer increases;with the increase of steel fiber volume content, the growth of tensile splitting strength is obvi-ous under the condition of steel fiber content is less than 2%, which splitting tensile strength of concrete increases 12.5%under the standard curing, splitting tensile strength of concrete increases 1.14 times under the high temperature curing and splitting tensile strength of concrete increases 22.7%. under the natural curing When steel fiber volume content is more than 2%, the cleavage strength is almost unchanged, and it's 10.8MPa. High temperature curing is advantageous to en-hance the compressive strength of reactive powder concrete, but little impact on the splitting tensile strength.