土工基础

土工基础 ›› 2021, Vol. 35 ›› Issue (2): 161-163.

• 专题论述 • 上一篇    下一篇

玄武岩纤维对珊瑚礁砂混凝土抗冲磨性能影响

覃庆龙1,2，孟庆山3，覃东来3，黄孝芳1,2   

  1. （1.桂林理工大学土木与建筑工程学院，广西桂林 541004；2.广西岩土力学与工程重点实验室，广西桂林 541004；3.中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室，武汉 430071）
  • 收稿日期:2020-03-08 修回日期:2020-03-13 出版日期:2021-04-23 发布日期:2021-04-24
  • 通讯作者: 孟庆山（1974-），男，博士，研究员，研究方向为珊瑚岛礁工程地质与力学特性。
  • 作者简介:覃庆龙（1994-），男，硕士研究生，研究方向为岩土工程。

Effect of Basalt Fibers on the Abrasion Resistance of Concrete with Coral Reef Sand

QIN Qinglong1,2, MENG Qingshan3, QIN Donglai3， HUANG Xiaofang1,2   

  1. (1.College of Civil and Architectural Engineering, Guilin University of Technology, Guilin 541004；
    2.Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin University of Technology, Guilin 541004；
    3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Wuhan Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071)
  • Received:2020-03-08 Revised:2020-03-13 Online:2021-04-23 Published:2021-04-24

摘要： 在复杂的海洋环境下，防波堤等珊瑚礁砂混凝土构筑物发生冲刷磨蚀破坏，为了提高珊瑚礁砂混凝土的抗冲磨性能以及防波堤的耐久性。将不同掺量的玄武岩纤维掺入珊瑚礁砂混凝土，并对其进行单轴抗压、劈裂抗拉和抗冲磨试验，从而得到不同掺量的玄武岩纤维对珊瑚礁砂混凝土的抗冲磨强度，抗压强度和劈裂抗拉强度的影响规律。结果表明：珊瑚礁砂混凝土的抗压强度随着龄期的延长而增大，且玄武岩纤维对改良珊瑚礁砂混凝土的立方体抗压强度的作用不大，但是玄武岩纤维可以提高珊瑚礁砂混凝土的劈裂抗拉强度；在玄武岩纤维体积占混凝土体积的0.10%时，珊瑚礁砂混凝土的抗冲磨强度达到最大。

关键词: 珊瑚礁砂混凝土, 玄武岩纤维, 力学性能, 抗冲磨性能

Abstract: In the complex marine environments, the erosion and abrasion of concrete structures with coral reef sand such as breakwaters are frequently occurred. In order to improve the abrasion performance of coral reef sand concrete and the durability of breakwaters, basalt fibers with different content are mixed into the coral reef sand concrete samples. The basalt improved coral reef sand concrete samples were laboratory tested with uniaxial compressive strength, splitting tensile and abrasion resistance tests. The influence of the basalt fiber content on the mechanical properties of coral reef sand concrete were investigated. The results indicate that, the compressive strength of the basalt fiber improve coral reef sand concrete increases with the increase of curing age, but the content of basalt fiber has limited impact on the compressive strength. The split tensile strength of the sample can be improved by the basalt fiber content. When the basalt fiber content is 0.10% of the sample volume, the abrasion resistance reaches the maximum.


Key words: coral reef sand concrete, basalt fiber, mechanical properties, abrasion resistance

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