摘要
参照目前国际上对混凝土轴拉性能的多种测试方法,采用环氧粘贴法进行了纤维混凝土的轴拉试验。研究了不同纤维掺量的聚丙烯粗纤维对混凝土轴拉极限承载力、极限应变及残余承载力的影响。试件尺寸为100mm×100mm×200mm;聚丙烯纤维掺量分别为6、7、8、9、10 kg/m3。结果表明:聚丙烯粗纤维能有效地提高混凝土的抗拉强度与峰值应变,与素混凝土相比,掺量为9 kg/m3的聚丙烯纤维混凝土的抗拉强度与峰值应变分别提高43%和41%。
Based on different direct tensile test methods of concrete in the present studies, a series of tests were carried out by using epoxy adhesive method.Influence of fiber content on tensile strength, tensile strain and residual capacity of concrete were studied.The specimen dimension is 100 mm× 100 mm×200 mm and the content of macro-PP fiber is 6,7,8,9,10 kg/m^3 respectively.The test results indicate that Macro-PP fiber can enhance the tensile strength and tensile strain at peak load effectively.Compared with plain concrete, it was found that the tensile strength and tensile strain at peak load of concrete with 9 kg/m^3 macro-PP fiber increased by 43% and 41% respectively.
出处
《混凝土》
CAS
CSCD
北大核心
2011年第1期81-84,共4页
Concrete
关键词
轴拉性能
混凝土
聚丙烯纤维
uniaxial tensile properties
concrete
macro-PP fiber
