Effect of amine functionalized nanosilica on the cement hydration and on the physical-mechanical properties of Portland cement pastes

被引:0
|
作者
Julliana Simas Vasconcellos
Gabriel Lima Oliveira Martins
Gerlon de Almeida Ribeiro Oliveira
Luciano Morais Lião
João Henrique da Silva Rêgo
Patrícia Pomme Confessori Sartoratto
机构
[1] University of Brasília,Postgraduate Program in Structural Engineering and Construction
[2] Campus Universitário Darcy Ribeiro,Chemistry Institute
[3] Goiás Federal University,undefined
[4] Campus Samambaia,undefined
来源
关键词
Nanoparticles; Nanosilica; Chemical synthesis; Functionalized nanosilica;
D O I
暂无
中图分类号
学科分类号
摘要
In recent years, due to the rapid development of nanotechnology and the desire for breakthroughs in cementitious materials, there has been a strong research focus on the application of nanoparticles as supplementary cementitious materials (SCM) such as nanosilica (NS). This paper investigates the effect of functionalized nanosilica (NSF) with amino groups on Portland cement pastes. Fourier transform infrared (FTIR) spectroscopy, 29Si nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), and transmission electron microscopy (TEM) assays were performed to characterize the NSF and confirm the grafting of the amine organic groups on the nanosilica surface (NS). Samples of cement masses were prepared containing NSF or NS with varying content of 0.3, 0.9 and 2.7% by weight, a reference sample of cement mass was also prepared without any addition. For the characterization of cement pastes, induction calorimetry, mercury intrusion porosimetry, and compressive strength tests were performed. The results showed that NSF samples led to reduced superplasticizer use and decreased hydration rate and that the 0.9% NSF sample achieved compressive strength at 28 days greater than 50 MPa.
引用
收藏
相关论文
共 50 条
  • [31] Effect of silicon carbide nanowhiskers on hydration and mechanical properties of a Portland cement paste
    de Azevedo, Nagilla Huerb
    Gleize, Philippe J. P.
    CONSTRUCTION AND BUILDING MATERIALS, 2018, 169 : 388 - 395
  • [32] Influence of the synergy between mineral additions and Portland cement in the physical-mechanical properties of ternary binders
    Fernandez, A.
    Alonso, M. C.
    Garcia-Calvo, J. L.
    Lothenbach, B.
    MATERIALES DE CONSTRUCCION, 2016, 66 (324)
  • [33] The effect of water ratio on microstructure and composition of the hydration products of Portland cement pastes
    Slamečka, Tomáš
    Škvára, František
    2002, Institute of Chemical Technology (46)
  • [34] Effect of Admixtures Based on Naphalene or Benzene of the Mechanical and Physicochemical Properties of Portland Cement Pastes
    Abo-El-Enein, S. A.
    El-Ashry, S. H.
    El-Sukkary, M. M. A.
    Hussain, M. H. M.
    Silicates Industriels, 62 (3-4):
  • [35] Effect of admixtures based on naphtalene or benzene on the mechanical and physicochemical properties of Portland cement pastes
    Abo-El-Enein, S
    El-Ashry, SH
    El-Sukkary, MMA
    Hussain, MHM
    Gad, EAM
    SILICATES INDUSTRIELS, 1997, 62 (3-4): : 75 - 81
  • [36] Effect of CO2 laser radiation on the mechanical properties of Portland cement pastes
    Moreno-Virgen, M. R.
    Soto-Bernal, J. J.
    Ortiz-Lozano, J. A.
    Bonilla-Petriciolet, A.
    Vega-Duran, J. T.
    Gonzalez-Mota, R.
    Pineda-Pinon, J.
    MATERIALES DE CONSTRUCCION, 2011, 61 (301) : 77 - 91
  • [37] The effect of water ratio on microstructre and composition of the hydration products of Portland cement pastes
    Slamecka, T
    Skvára, F
    CERAMICS-SILIKATY, 2002, 46 (04) : 152 - 158
  • [38] The Effect of Sodium Gluconate on Pastes' Performance and Hydration Behavior of Ordinary Portland Cement
    Lv, Xingdong
    Li, Jiazheng
    Lu, Chao
    Liu, Zhanao
    Tan, Yaosheng
    Liu, Chunfeng
    Li, Beixing
    Wang, Rongkai
    ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, 2020, 2020
  • [39] Effect of temperature on the pore solution, microstructure and hydration products of Portland cement pastes
    Lothenbach, Barbara
    Winnefeld, Frank
    Alder, Corinne
    Wieland, Erich
    Lunk, Peter
    CEMENT AND CONCRETE RESEARCH, 2007, 37 (04) : 483 - 491
  • [40] Effect of calcined clays on the jhysical-mechanical properties of lardened Portland cement pastes
    Rakhimova, Nailia R. (naJla.rakhimova@tdtu.edu.vn), 2018, Bauverlag BV GmbH (71):