Effects of pozzolanic and non-pozzolanic nanomaterials on cement-based materials

Huigang Xiao; Fengling Zhang; Rui Liu; Rongling Zhang; Zhiguo Liu; Hongxia Liu

doi:10.1016/j.conbuildmat.2019.04.057

Effects of pozzolanic and non-pozzolanic nanomaterials on cement-based materials

Huigang Xiao^*
, Fengling Zhang
, Rui Liu
, Rongling Zhang
, Zhiguo Liu
, Hongxia Liu

^*Corresponding author for this work

School of Civil Engineering

School of Civil Engineering, Harbin Institute of Technology
National University of Singapore
Harbin Institute of Technology
Lanzhou Jiaotong University
Shandong Academic of Building Research

Research output: Contribution to journal › Article › peer-review

90 Scopus citations

Abstract

Although it has been verified that nanomaterials can improve the properties of cement-based materials, the research on the characteristics and mechanism of different types of nanomaterials is still inadequate. Two typical types of nanomaterials, nano-SiO ₂ (pozzolanic material) and nano-TiO ₂ (non-pozzolanic material), are utilized in this paper to investigate the combined effects of reactivity, size, and content on the efficiency of nanomaterials in cement-based materials. The experimental results indicate that the size and content effect of nano-SiO ₂ is obvious. Small size and large content of nano-SiO ₂ can significantly improve the compressive strength of cement paste. However, the size effect of nano-TiO ₂ is much weaker than that of nano-SiO ₂ , and the content effect of nano-TiO ₂ is only obvious at the early age. For the late age compressive strength, the small content of nano-TiO ₂ shows a similar obviously improving effect as the big content of nano-TiO ₂ . The pore structure analysis shows that both nano-SiO ₂ and nano-TiO ₂ can reduce the total porosity of cement paste, but nano-TiO ₂ is more effective than nano-SiO ₂ at reducing the harmful pores. Therefore, the small content of nano-TiO ₂ is more effective to enhance the impermeability of cement-based materials. The results of this paper show that nano-SiO ₂ and nano-TiO ₂ have different effects and they should be selected based on the properties requirement of cement-based materials.

Original language	English
Pages (from-to)	1-9
Number of pages	9
Journal	Construction and Building Materials
Volume	213
DOIs	https://doi.org/10.1016/j.conbuildmat.2019.04.057
State	Published - 20 Jul 2019

Keywords

Cement
Nano-SiO
Nano-TiO
Pore structure
Strength

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10.1016/j.conbuildmat.2019.04.057

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@article{95b7469793a343ab92bf523e265ecb1a,

title = "Effects of pozzolanic and non-pozzolanic nanomaterials on cement-based materials",

abstract = " Although it has been verified that nanomaterials can improve the properties of cement-based materials, the research on the characteristics and mechanism of different types of nanomaterials is still inadequate. Two typical types of nanomaterials, nano-SiO 2 (pozzolanic material) and nano-TiO 2 (non-pozzolanic material), are utilized in this paper to investigate the combined effects of reactivity, size, and content on the efficiency of nanomaterials in cement-based materials. The experimental results indicate that the size and content effect of nano-SiO 2 is obvious. Small size and large content of nano-SiO 2 can significantly improve the compressive strength of cement paste. However, the size effect of nano-TiO 2 is much weaker than that of nano-SiO 2 , and the content effect of nano-TiO 2 is only obvious at the early age. For the late age compressive strength, the small content of nano-TiO 2 shows a similar obviously improving effect as the big content of nano-TiO 2 . The pore structure analysis shows that both nano-SiO 2 and nano-TiO 2 can reduce the total porosity of cement paste, but nano-TiO 2 is more effective than nano-SiO 2 at reducing the harmful pores. Therefore, the small content of nano-TiO 2 is more effective to enhance the impermeability of cement-based materials. The results of this paper show that nano-SiO 2 and nano-TiO 2 have different effects and they should be selected based on the properties requirement of cement-based materials.",

keywords = "Cement, Nano-SiO, Nano-TiO, Pore structure, Strength",

author = "Huigang Xiao and Fengling Zhang and Rui Liu and Rongling Zhang and Zhiguo Liu and Hongxia Liu",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = jul,

day = "20",

doi = "10.1016/j.conbuildmat.2019.04.057",

language = "英语",

volume = "213",

pages = "1--9",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Effects of pozzolanic and non-pozzolanic nanomaterials on cement-based materials

AU - Xiao, Huigang

AU - Zhang, Fengling

AU - Liu, Rui

AU - Zhang, Rongling

AU - Liu, Zhiguo

AU - Liu, Hongxia

PY - 2019/7/20

Y1 - 2019/7/20

N2 - Although it has been verified that nanomaterials can improve the properties of cement-based materials, the research on the characteristics and mechanism of different types of nanomaterials is still inadequate. Two typical types of nanomaterials, nano-SiO 2 (pozzolanic material) and nano-TiO 2 (non-pozzolanic material), are utilized in this paper to investigate the combined effects of reactivity, size, and content on the efficiency of nanomaterials in cement-based materials. The experimental results indicate that the size and content effect of nano-SiO 2 is obvious. Small size and large content of nano-SiO 2 can significantly improve the compressive strength of cement paste. However, the size effect of nano-TiO 2 is much weaker than that of nano-SiO 2 , and the content effect of nano-TiO 2 is only obvious at the early age. For the late age compressive strength, the small content of nano-TiO 2 shows a similar obviously improving effect as the big content of nano-TiO 2 . The pore structure analysis shows that both nano-SiO 2 and nano-TiO 2 can reduce the total porosity of cement paste, but nano-TiO 2 is more effective than nano-SiO 2 at reducing the harmful pores. Therefore, the small content of nano-TiO 2 is more effective to enhance the impermeability of cement-based materials. The results of this paper show that nano-SiO 2 and nano-TiO 2 have different effects and they should be selected based on the properties requirement of cement-based materials.

AB - Although it has been verified that nanomaterials can improve the properties of cement-based materials, the research on the characteristics and mechanism of different types of nanomaterials is still inadequate. Two typical types of nanomaterials, nano-SiO 2 (pozzolanic material) and nano-TiO 2 (non-pozzolanic material), are utilized in this paper to investigate the combined effects of reactivity, size, and content on the efficiency of nanomaterials in cement-based materials. The experimental results indicate that the size and content effect of nano-SiO 2 is obvious. Small size and large content of nano-SiO 2 can significantly improve the compressive strength of cement paste. However, the size effect of nano-TiO 2 is much weaker than that of nano-SiO 2 , and the content effect of nano-TiO 2 is only obvious at the early age. For the late age compressive strength, the small content of nano-TiO 2 shows a similar obviously improving effect as the big content of nano-TiO 2 . The pore structure analysis shows that both nano-SiO 2 and nano-TiO 2 can reduce the total porosity of cement paste, but nano-TiO 2 is more effective than nano-SiO 2 at reducing the harmful pores. Therefore, the small content of nano-TiO 2 is more effective to enhance the impermeability of cement-based materials. The results of this paper show that nano-SiO 2 and nano-TiO 2 have different effects and they should be selected based on the properties requirement of cement-based materials.

KW - Cement

KW - Nano-SiO

KW - Nano-TiO

KW - Pore structure

KW - Strength

UR - https://www.scopus.com/pages/publications/85064038432

U2 - 10.1016/j.conbuildmat.2019.04.057

DO - 10.1016/j.conbuildmat.2019.04.057

M3 - 文章

AN - SCOPUS:85064038432

SN - 0950-0618

VL - 213

SP - 1

EP - 9

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Effects of pozzolanic and non-pozzolanic nanomaterials on cement-based materials

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Keywords

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