Effect of nano-TiO2 on the mechanical properties of cement mortar

被引：241

作者：

Meng, Tao ^{[1
]}

Yu, Yachao ^{[2
]}

Qian, Xiaoqian

Zhan, Shulin

Qian, Kuangliang

机构：

[1] Zhejiang Univ, Coll Civil Engn & Architecture, Inst Bldg Mat, Hangzhou 310058, Zhejiang, Peoples R China

[2] Baoye Grp, Construct Ind Inst, Shaoxing 312030, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 29卷

关键词：

Nano-TiO2; Mechanical properties; Microstructure; Nucleus function; Orientation index; WATER PERMEABILITY; NANO-PARTICLES; CONCRETE; STRENGTH; TIO2; NANOPARTICLES;

D O I：

10.1016/j.conbuildmat.2011.10.047

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Effect of nano-TiO2 on the mechanical properties of cement mortar was studied in this paper. Test results indicated that when cement was substituted by nano-TiO2, the strength of cement mortar at early ages increased a lot and the fluidity and strength at evening ages decreased obviously. The change tendency of diffraction intensity of (001) crystal plane was entirely different with that of (1 01) crystal plane. It seemed that the main reason for the improvement of strength is the decrease and modification of orientation index for the nucleus function, not the increasing amount of hydration products. Results also indicated that it was useful to modify the fluidity and the strength at evening ages of the cement mortar with nano-TiO2 by adding superplasticizer and slag powder into cement mortar. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：241 / 245

页数：5

共 18 条

[1]

[Anonymous], 24192005 GBT CHIN NA

[2]

[Anonymous], 176711999 GBT CHIN N

[3] Photocatalytic oxidation of NOx gases using TiO2:: a surface spectroscopic approach [J].

Dalton, JS ;

Janes, PA ;

Jones, NG ;

Nicholson, JA ;

Hallam, KR ;

Allen, GC .

ENVIRONMENTAL POLLUTION, 2002, 120 (02) :415-422

[4] Petrography evidence of the interfacial transition zone (ITZ) in the normal strength concrete containing granitic and limestone aggregates [J].

Hussin, Azimah ;

Poole, Colin .

CONSTRUCTION AND BUILDING MATERIALS, 2011, 25 (05) :2298-2303

[5] Photocatalytic degradation of model organic pollutants on an immobilized particulate TiO2 layer -: Roles of adsorption processes and mechanistic complexity [J].

Krysa, Josef ;

Waldner, Georg ;

Mest'ankova, Hana ;

Jirkovsky, Jaromir ;

Grabner, Gottfried .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 64 (3-4) :290-301

[6] Flexural fatigue performance of concrete containing nano-particles for pavement [J].

Li, Hui ;

Zhang, Mao-hua ;

Ou, Jin-ping .

INTERNATIONAL JOURNAL OF FATIGUE, 2007, 29 (07) :1292-1301

[7] On the tensile and shear strength of nano-reinforced composite interfaces [J].

Meguid, SA ;

Sun, Y .

MATERIALS & DESIGN, 2004, 25 (04) :289-296

[8] RETRACTED: The effects of SiO2 nanoparticles on physical and mechanical properties of high strength compacting concrete (Retracted Article) [J].

Nazari, Ali ;

Riahi, Shadi .

COMPOSITES PART B-ENGINEERING, 2011, 42 (03) :570-578

[9] The effects of Cr2O3 nanoparticles on strength assessments and water permeability of concrete in different curing media [J].

Nazari, Ali ;

Riahi, Shadi .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (03) :1173-1182

[10] The effect of TiO2 nanoparticles on water permeability and thermal and mechanical properties of high strength self-compacting concrete [J].

Nazari, Ali ;

Riahi, Shadi .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 528 (02) :756-763

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