摘要
为研究纤维素纤维和玄武岩纤维单一掺入及混合掺入对混凝土强度的影响,通过立方体抗压、劈裂抗拉和抗折试验,分析了不同玄武岩纤维长度(6 mm、12 mm、30 mm)及不同掺量(2.7 kg/m^3、4.0 kg/m^3、5.4 kg/m^3)对混杂纤维混凝土力学性能的影响。试验结果表明:混杂纤维的掺入能使混凝土的立方体抗压、劈裂抗拉及抗折强度均有所提高,当玄武岩纤维掺量为4.0 kg/m^3,纤维素纤维掺量为1.6 kg/m^3时,其立方体抗压、劈裂抗拉及抗折强度较普通混凝土分别提高了13.94%、35.46%、18.75%;当玄武岩纤维长度为12 mm,掺量为4.0 kg/m^3时,纤维混凝土表现出了较好的增强效果,且随着掺量的增加,其强度先增大后减小;单掺纤维素纤维掺量为1.6 kg/m^3时,其对混凝土的增强效果最佳。
In order to study the effect of basalt fiber and cellulose fiber mixing on the mechanical properties of concrete,the different basalt fiber lengths( 6 mm,12 mm,30 mm) and different fiber contents( 2.7 kg/m^3,4.0 kg/m^3,5.4 kg/m^3) were analyzed by cube compression,splitting tensile and flexural strength test.The results indicate that compressive strength,splitting tensile strength and flexural strength were increased after adding a reasonable content of hybrid fiber.When the content of basalt fiber and cellulose fiber is 4 kg/m^3 and 1.6 kg/m^3,respectively,the cube compression,splitting tensile and flexural strength are increased by 13.94%,35.46% and 18.75%,respectively,than that of the ordinary concrete.When the basalt fiber length is 12 mm and the content is 4 kg/m^3,the fiber reinforced concrete shows a good enhancement effect.And with the increase of the content,the strength of fiber concrete increases first and then decreases.When the content of cellulose is 1.6 kg/m^3,the effect of concrete is the best.
作者
张振雷
ZHANG Zhen-lei(Railway Engineering Department of Liaoning Railway Vocational and Technical Collage,Jinzhou 121000, China)
出处
《玻璃钢／复合材料》
CAS
北大核心
2019年第6期43-48,共6页
Fiber Reinforced Plastics/Composites
基金
辽宁省自然科学基金(2015020208)
关键词
混杂纤维
力学性能
纤维长度
纤维掺量
hybrid fiber
mechanical properties
fiber length
fiber content
