- 濮 琦1,薛万银1,蒋林华2,奚飞达1,张承志1,戴大力3,谢鑫如4
2020年第7期
摘要
引用本文
摘 要:为研究冻融作用对混凝土断裂性能的影响,测试了不同水胶比(0.4、0.5、0.6),含气量(1.6%、6%),以及粉煤灰掺量(0、30%)三因素下混凝土的断裂能。研究结果表明,随着冻融循环次数的增加,混凝土的断裂能逐渐降低。低水胶比和合理的引气能够提高冻融作用下混凝土的抗开裂性能,掺入30%的粉煤灰降低了混凝土的抗冻性。Abstract:Inordertostudytheeffectoffreezingandthawingonthefractureperformanceofconcrete,threefactorssuchaswater-binderratioof0.4,0.5,0.6,flyashcontentof0and30%,gascontentof1.6%and6%weredesignedtostudythefractureperformanceofconcrete.Theresultsshowthatasthenumberoffreeze-thawcyclesincreases,theconcretefractureenergygraduallydecreases.Lowwater-binderratioandreasonableairentrainmentcanimprovethecrackresistanceofconcreteunderfreeze-thawcycle.Theadditionofflyashreducesthefreezingresistanceofconcrete.
濮琦,薛万银,蒋林华,等.冻融循环作用下混凝土断裂损伤特性研究[J].混凝土与水泥制品,2020(7):30-33.
PU Qi,XUE Wan-yin,JIANG Lin-hua,et al.Research on the Fracture Damage Characteristics of Concrete Under Freeze-Thaw Cycle [J].China Concrete and Cement Products,2020(7):30-33.