Surface modification of miscanthus fiber with hydrophobic silica aerogel for high performance bio-lightweight concrete

被引:12
|
作者
Chen, Y. X. [1 ]
Yu, Qingliang [1 ,2 ]
机构
[1] Wuhan Univ, Sch Civil Engn, Wuhan 430072, Peoples R China
[2] Eindhoven Univ Technol, Dept Built Environm, POB 513, NL-5600 MB Eindhoven, Netherlands
基金
中国国家自然科学基金;
关键词
Miscanthus fiber; Silica aerogel; Hydrophobicity; Thermal insulation; Acoustic absorption; Microstructure; ACOUSTICAL CHARACTERIZATIONS; PLANT; COMPOSITES; HEMP;
D O I
10.1016/j.conbuildmat.2023.134478
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Bio-fiber reinforced cementitious material is now attracted widespread attention thanks to its low carbon footprint and its advantages in energy conservation in buildings. However, the main concerns of using large volume of bio-fibers in concrete is its high water absorption and the leaching of organic matter that is incompatible with cement. This study investigates a surface modification method of a bio-fiber (miscanthus) by using hydrophobic silica aerogel and further evaluates its mechanical and insulating performance in lightweight concrete and increase its compatibility with cement. X-ray diffraction, thermal gravimetry and calorimeter test were carried out to investigate the effect of hydrophobic miscanthus fibers on the microstructure of cement matrix. The results show silica aerogel modified miscanthus fiber enhances both the compressive and flexural strength, meanwhile significantly improving the insulating performance of concrete. The use of superhydrophobic aerogel particles reduces the sugar leached from miscanthus and the hydration heat peak is only slightly delayed with the incorporation of aerogel coated miscanthus fibers. The results of this study shed light on surface modifications of bio-fibers for applications in high performance construction materials.
引用
收藏
页数:13
相关论文
共 34 条
  • [1] Acoustic performance and microstructural analysis of bio-based lightweight concrete containing miscanthus
    Chen, Yuxuan
    Yu, Q. L.
    Brouwers, H. J. H.
    CONSTRUCTION AND BUILDING MATERIALS, 2017, 157 : 839 - 851
  • [2] Lightweight and hydrophobic silica aerogel/glass fiber composites with hierarchical networks for outstanding thermal and acoustic insulation
    Xiao, Qiyue
    Xue, Jieyu
    Meng, Yuanlong
    Ding, Yuanrong
    Yang, Yong
    CERAMICS INTERNATIONAL, 2024, 50 (24) : 54473 - 54481
  • [3] Lightweight, Flexible and Hydrophobic Cotton Fiber/Silica Aerogel Composite by Freeze-Drying for Organic Solvent/Water Separation and Thermal Insulation
    Huo, Jian-Chun
    Yang, Hai-Xia
    Ma, Yuan
    Bai, Jie
    SCIENCE OF ADVANCED MATERIALS, 2021, 13 (09) : 1820 - 1824
  • [4] Effect of surface treatment of apricot shell on the performance of lightweight bio-concrete
    Wu, Fan
    Yu, Qingliang
    Liu, Changwu
    Brouwers, H. J. H.
    Wang, Linfeng
    CONSTRUCTION AND BUILDING MATERIALS, 2019, 229
  • [5] Investigation of high temperature thermal insulation performance of fiber-reinforced silica aerogel composites
    Liu, He
    Liu, Jia'ao
    Tian, You
    Wu, Xuehong
    Li, Zengyao
    INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2023, 183
  • [6] Investigation of high temperature thermal insulation performance of fiber-reinforced silica aerogel composites
    Liu, He
    Liu, Jia'ao
    Tian, You
    Wu, Xuehong
    Li, Zengyao
    INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2023, 183
  • [7] Lightweight quartz fiber fabric reinforced phenolic aerogel with surface densified and graded structure for high temperature thermal protection
    Wang, Hebing
    Quan, Xiandong
    Yin, Lianhua
    Jin, Xiangyu
    Pan, Yiwu
    Wu, Can
    Huang, He
    Hong, Changqing
    Zhang, Xinghong
    COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2022, 159
  • [8] High-temperature resistance performance of silica aerogel composites through fiber reinforcement
    Kang, Dawei
    Jia, Shuaide
    Zhao, Chonghang
    Ni, Ya
    Qi, Jiqiu
    Kang, Zhuangsu
    Sui, Yanwei
    Wei, Fuxiang
    Xiao, Bin
    Meng, Qingkun
    CERAMICS INTERNATIONAL, 2024, 50 (15) : 26829 - 26838
  • [9] Development of novel ultra-high-performance lightweight concrete modified with dehydrated cement powder and aerogel
    Shohan, Ahmed Ali A.
    Zaid, Osama
    Arbili, Mohamed M.
    Alsulamy, Saleh Hamed
    Ibrahim, Wafeek Mohamed
    JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS, 2024, 13 (03) : 351 - 374
  • [10] Lightweight multiscale hybrid carbon-quartz fiber fabric reinforced phenolic-silica aerogel nanocomposite for high temperature thermal protection
    Cheng, Haiming
    Fan, Zihao
    Hong, Changqing
    Zhang, Xinghong
    COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2021, 143