异形微型碳纤维复合材料对混凝土力学性能的影响
发布时间：2018-08-03 18:17
【摘要】：通过轴心拉伸试验考察了棒状、片状(宽、窄)、波浪形这几种异形微型聚丙烯腈(PAN)基碳纤维复合材料对混凝土力学性能的影响。实验表明:碳纤维复合材料的加入可以有效、较大程度地提高混凝土的抗拉强度、强度和抗折强度。其中,与基准混凝土相比,异形微型碳纤维增强混凝土的抗拉强度最大可提高64%;增强混凝土的标号最大可从C40~C45级增加为C60级;随着复合材料比表面积和的增加,增强混凝土的强度和抗折强度最大可分别提高45.6%和50.6%;此外,在相同尺寸及比表面积下,波浪形碳纤维混凝土比片状碳纤维混凝土更难被折断。以上均证明PAN基碳纤维复合材料对混凝土有较好的增韧作用。
[Abstract]:The effects of rod, flake (width, narrow) and wave shape on the mechanical properties of concrete were investigated by axial tensile test. The experimental results show that the addition of carbon fiber composites can effectively improve the tensile strength, strength and flexural strength of concrete. Compared with benchmark concrete, the tensile strength of special-shaped micro-carbon fiber reinforced concrete can be increased by 64%, the maximum number of reinforced concrete can be increased from C40~C45 level to C60 grade, and with the increase of the specific surface area of composite material, The maximum strength and flexural strength of reinforced concrete can be increased by 45.6% and 50.6%, respectively. In addition, under the same size and specific surface area, wavy carbon fiber reinforced concrete is more difficult to be broken than flake carbon fiber reinforced concrete. All of the above prove that PAN-based carbon fiber composites have a good toughening effect on concrete.
【作者单位】： 中复神鹰碳纤维有限责任公司;中国建筑材料科学研究总院;
【基金】：中国建筑材料科学研究总院绿色建筑材料国家重点实验室开放基金课题(集束型碳纤维改善混凝土韧性的试验研究)
【分类号】：TU528
本文编号：2162568
[Abstract]:The effects of rod, flake (width, narrow) and wave shape on the mechanical properties of concrete were investigated by axial tensile test. The experimental results show that the addition of carbon fiber composites can effectively improve the tensile strength, strength and flexural strength of concrete. Compared with benchmark concrete, the tensile strength of special-shaped micro-carbon fiber reinforced concrete can be increased by 64%, the maximum number of reinforced concrete can be increased from C40~C45 level to C60 grade, and with the increase of the specific surface area of composite material, The maximum strength and flexural strength of reinforced concrete can be increased by 45.6% and 50.6%, respectively. In addition, under the same size and specific surface area, wavy carbon fiber reinforced concrete is more difficult to be broken than flake carbon fiber reinforced concrete. All of the above prove that PAN-based carbon fiber composites have a good toughening effect on concrete.
【作者单位】： 中复神鹰碳纤维有限责任公司;中国建筑材料科学研究总院;
【基金】：中国建筑材料科学研究总院绿色建筑材料国家重点实验室开放基金课题(集束型碳纤维改善混凝土韧性的试验研究)
【分类号】：TU528
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