The Production and Durability of Superhydrophobic Foamed Concrete

被引:0
|
作者
Mao, Juntao [1 ]
Xu, Yi [2 ]
Kang, Xuan [1 ]
Tong, Songru [1 ]
Chu, Hongqiang [2 ]
Jiang, Linhua [2 ]
机构
[1] Hohai Univ, Coll Mat Sci & Engn, Nanjing 211100, Peoples R China
[2] Hohai Univ, Coll Civil & Transportat Engn, Nanjing 211100, Peoples R China
基金
中国国家自然科学基金;
关键词
superhydrophobic; foamed concrete; durability; binary synergistic; 3D surface morphology;
D O I
10.3390/ma18030663
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The durability problem caused by the high-water absorption of foamed concrete restricts its further development and application. This study aimed to improve the durability of foamed concrete by transforming its performance from hydrophilic to superhydrophobic. Firstly, polydimethylsiloxane-modified superhydrophobic bulk foamed concrete was produced through physical foaming. Then, multiple durability tests, like mechanical wear, acid-alkali-saline resistance, ultraviolet aging, and extreme temperatures resistance tests, were carried out to assess its performance. Finally, the mechanism of superhydrophobicity also was studied. The results indicated that the volumetric and capillary water absorption of the superhydrophobic foamed concrete decreased by 72.4% and 92.6%, respectively, compared to ordinary foamed concrete. The dry densities of ordinary foamed concrete and superhydrophobic foamed concrete were 720 kg/m3 and 850 kg/m3, respectively. Superhydrophobic foamed concrete exhibited excellent wear resistance and resistance to ultraviolet aging. The contact angles after 10 m polishing and 168 h of ultraviolet irradiation were 152.1 degrees and 152.2 degrees, respectively. High temperature increased its hydrophobicity, and the contact angle increased to 157.1 degrees at 200 degrees C. Additionally, electrochemical tests proved its better chloride ion corrosion resistance, and the corrosion potential and corrosion current of the superhydrophobic foamed concrete after 7 days were -0.190 V and 3.177 x 10-6 A, respectively. Therefore, the superhydrophobic bulk modification technique shows considerable potential for enhancing the durability of foamed concrete applied in various scenarios.
引用
收藏
页数:22
相关论文
共 50 条
  • [21] Foamed concrete
    Aldridge, David
    Concrete (London), 2000, 34 (04):
  • [22] Study on freshness, morphology, strength, and durability properties of foamed concrete reinforced with agave fiber
    Mydin, Md Azree Othuman
    Majeed, Samadar S.
    Bahrami, Alireza
    Dulaimi, Anmar
    Ozkilic, Yasin Onuralp
    Omar, Roshartini
    Abdullah, Mohd Mustafa Al Bakri
    Palanisamy, Jagadesh
    Awoyera, Paul Oluwaseun
    JOURNAL OF ENGINEERED FIBERS AND FABRICS, 2024, 19
  • [23] Physico-mechanical, thermal properties and durability of foamed geopolymer concrete containing cenospheres
    Shi, Jinyan
    Liu, Yuanchun
    Wang, Enliang
    Wang, Lizhi
    Li, Changqing
    Xu, Huijie
    Zheng, Ximing
    Yuan, Qiang
    CONSTRUCTION AND BUILDING MATERIALS, 2022, 325
  • [24] Residual durability, mechanical, and microstructural properties of foamed concrete subjected to various elevated temperatures
    Mydin, Md Azree Othuman
    Sor, Nadhim Hamah
    Bahrami, Alireza
    Dulaimi, Anmar
    Ozkilic, Yasin Onuralp
    Althoey, Fadi
    Jagadesh, P.
    Isleem, Haytham F.
    Tawfik, Taher A.
    ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH, 2024, 55
  • [25] Engineering and Durability Properties of Self-Consolidating Concrete Incorporating Foamed Lightweight Aggregate
    Hwang, Chao-Lung
    Vu-An Tran
    JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2016, 28 (09)
  • [26] Superhydrophobic Coatings and Their Durability
    Cohen, N.
    Dotan, A.
    Dodiuk, H.
    Kenig, S.
    MATERIALS AND MANUFACTURING PROCESSES, 2016, 31 (09) : 1143 - 1155
  • [27] The durability of superhydrophobic films
    Wang, Shing-Dar
    Jiang, Ya-Syuan
    APPLIED SURFACE SCIENCE, 2015, 357 : 1647 - 1657
  • [28] The stability and durability of silt-based foamed concrete: A new type of road engineering material
    Wu, Jianqing
    Lv, Chen
    Pi, Rendong
    Zhang, Hongbo
    Bi, Yufeng
    Song, Xiuguang
    Wang, Zhe
    CONSTRUCTION AND BUILDING MATERIALS, 2021, 304
  • [29] INFLUENCE OF KENAF AND POLYPROPYLENE FIBRES ON MECHANICAL AND DURABILITY PROPERTIES OF FIBRE REINFORCED LIGHTWEIGHT FOAMED CONCRETE
    Awang, H.
    Ahmad, M. H.
    Al-Mulali, M. Z.
    JOURNAL OF ENGINEERING SCIENCE AND TECHNOLOGY, 2015, 10 (04): : 496 - 508
  • [30] Foamed geopolymer concrete
    Singh, N. B.
    MATERIALS TODAY-PROCEEDINGS, 2018, 5 (07) : 15243 - 15252