Nanomechanical investigation of the effects of nanoSiO2 on C-S-H gel/cement grain interfaces

被引：53
|
作者：
Xu, Jing [1 ]
Corr, David J. [2 ]
Shah, Surendra P. [2 ]
机构：
[1] Tongji Univ, Minist Educ, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R China
[2] Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA
来源：
CEMENT & CONCRETE COMPOSITES | 2015年 / 61卷
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
Cement-based materials; Nanomechanical properties; Interface; Nanoindentation; Modulus mapping; NanoSiO(2); CEMENT-BASED MATERIALS; ELASTIC-MODULUS; NANOINDENTATION; NANOSCALE; CONCRETE; HARDNESS; PASTE;
D O I：
10.1016/j.cemconcomp.2015.04.011
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, nanoindentation and viscoelastic modulus mapping were employed to study the influence of nanoSiO(2) on the properties of the interface between C-S-H gel and cement grains. The interface width measured by modulus mapping was around 200 nm as compared to a rough estimation of less than 5 pm by nanoindentation, due to the fact that 2 orders of magnitude increase in spatial resolution can be achieved with modulus mapping. Although the influence of nanoSiO(2) on the interface width was not significant, its impact on nanomechanical properties of the interface was marked. The data suggest an improvement of modulus and hardness of the interface by nanoSiO(2) in early age. This interface, which could be regarded as a layer surrounding cement grains, become denser by the addition of nanoSiO(2). (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：7 / 17
页数：11
相关论文
共 50 条
  • [1] Nanoscratch Study of the Modification Effects of NanoSiO2 on C-S-H Gel/Cement Grain Interfaces
    Xu, Jing
    Corr, David J.
    Shah, Surendra P.
    JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2017, 29 (09)
  • [2] Nanomechanical properties of C-S-H gel/cement grain interface by using nanoindentation and modulus mapping
    Xu, Jing
    Corr, David J.
    Shah, Surendra P.
    JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A, 2015, 16 (01): : 38 - 46
  • [3] Modification effects of colloidal nanoSiO2 on cement hydration and its gel property
    Hou, Pengkun
    Kawashima, Shiho
    Kong, Deyu
    Corr, David J.
    Qian, Jueshi
    Shah, Surendra P.
    COMPOSITES PART B-ENGINEERING, 2013, 45 (01) : 440 - 448
  • [4] Effects of colloidal nanoBoehmite and nanoSiO2 on fly ash cement hydration
    Zhu, Jianping
    Feng, Chunhua
    Yin, Haibin
    Zhang, Zhanying
    Shah, Surendra P.
    CONSTRUCTION AND BUILDING MATERIALS, 2015, 101 : 246 - 251
  • [5] Effects of the pozzolanic reactivity of nanoSiO2 on cement-based materials
    Hou, Pengkun
    Qian, Jueshi
    Cheng, Xin
    Shah, Surendra P.
    CEMENT & CONCRETE COMPOSITES, 2015, 55 : 250 - 258
  • [6] Effects of nanosilica on cement grain/C-S-H gel interfacial properties quantified by modulus mapping and nanoscratch
    Xu, Jing
    Shen, Weiguo
    Corr, David J.
    Shah, Surendra P.
    MATERIALS RESEARCH EXPRESS, 2019, 6 (04)
  • [7] Investigation of Sulphate Attack on C-S-H Gel
    Feng, Xiaoxin
    Li, Xiujuan
    Wei, Qingmin
    APPLICATIONS OF ENGINEERING MATERIALS, PTS 1-4, 2011, 287-290 : 1116 - +
  • [8] Effects of anionic and nonionic surfactants on the dispersion and stability of nanoSiO2 in aqueous and cement pore solutions
    Sargam, Yogiraj
    Wang, Kejin
    Tsyrenova, Ayuna
    Liu, Fei
    Jiang, Shan
    CEMENT AND CONCRETE RESEARCH, 2021, 144
  • [9] Effect of temperature on C-S-H gel nanostructure in white cement
    Saez del Bosque, I. F.
    Martinez-Ramirez, S.
    Martin-Pastor, M.
    Blanco-Varela, M. T.
    MATERIALS AND STRUCTURES, 2014, 47 (11) : 1867 - 1878
  • [10] Study on the Unhydrated Cement Grain/C-S-H Gel Interface in Cement Paste by use of Nano-scratch Technique
    Mao, Yue
    Yao, Wu
    Xu, Jing
    TESTING AND EVALUATION OF ADVANCED BUILDING MATERIALS, 2013, 539 : 84 - 88
12345