Effect of the particle size of nanosilica on the compressive,strength and the optimum replacement content of cement mortar containing nano-SiO2

被引:176
作者
Haruehansapong, Sattawat [1 ]
Pulngern, Tawich [1 ]
Chucheepsakul, Somchai [1 ]
机构
[1] King Mongkuts Univ Technol Thonburi, Dept Civil Engn, Fac Engn, Bangkok 10140, Thailand
关键词
Cement mortar; Nanosilica; Silica fume; Compressive strength; Microstructure; SILICA FUME; NANO-PARTICLES; PERFORMANCE; RESISTANCE; CONCRETE;
D O I
10.1016/j.conbuildmat.2013.10.002
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This research presents the compressive strengths and the microstructure photographs of cement mortars containing nanosilica (NS) with various sizes of 12,20 and 40 nm and then compared with cement mortar with silica fume (SF). Tested results indicated that NS significantly improved compressive strength of cement mortar and the strength improvement was also dependent on the NS particle size. Cement mortar containing NS 40 nm gave higher compressive strength compared with NS 12 and 20 nm due to their agglomeration and ineffective dispersion. By varying the replacement contents of 3%, 6%, 9% and 12% NS by weight of cement, the optimum replacement content was 9% for all NS particle sizes and SF. These results indicate that the particle size of nanosilica affected only the compressive strength of cement mortar, but it had no effect on the optimum replacement content. The results of microstructure photographs are also supported the compressive strength and optimum replacement content results. NS particles presented high pozzolanic activity and could fill up pores, resulting in homogeneous, dense and compact microstructures. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:471 / 477
页数:7
相关论文
共 26 条
  • [1] [Anonymous], 2011, C109C109M ASTM
  • [2] [Anonymous], 2000, C778 ASTM
  • [3] C. ASTM, 2007, ASTM C1437-20, DOI [10.1520/C1437-20, DOI 10.1520/C1437-20]
  • [4] Effect of nano-SiO2 particle size on the formation of LLDPE/SiO2 nanocomposite synthesized via the in situ polymerization with metallocene catalyst
    Chaichana, Ekrachan
    Jongsomjit, Bunjerd
    Praserthdam, Piyasan
    [J]. CHEMICAL ENGINEERING SCIENCE, 2007, 62 (03) : 899 - 905
  • [5] Dotto JMR, 2006, CEMENT CONCRETE COMP, V26, P31
  • [6] Influence of silica fume on the workability and the compressive strength of high-performance concretes
    Duval, R
    Kadri, EH
    [J]. CEMENT AND CONCRETE RESEARCH, 1998, 28 (04) : 533 - 547
  • [7] Characteristics of cement mortar with nano-SiO2 particles
    Jo, Byung-Wan
    Kim, Chang-Hyun
    Tae, Ghi-ho
    Park, Jong-Bin
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2007, 21 (06) : 1351 - 1355
  • [8] A study on mechanical and pressure-sensitive properties of cement mortar with nanophase materials
    Li, H
    Xiao, HG
    Ou, JP
    [J]. CEMENT AND CONCRETE RESEARCH, 2004, 34 (03) : 435 - 438
  • [9] Microstructure of cement mortar with nano-particles
    Li, H
    Xiao, HG
    Yuan, J
    Ou, JP
    [J]. COMPOSITES PART B-ENGINEERING, 2004, 35 (02) : 185 - 189
  • [10] Flexural fatigue performance of concrete containing nano-particles for pavement
    Li, Hui
    Zhang, Mao-hua
    Ou, Jin-ping
    [J]. INTERNATIONAL JOURNAL OF FATIGUE, 2007, 29 (07) : 1292 - 1301