Durability performances of concrete with nano-silica

被引：346

作者：

Du, Hongjian ^{[1
]}

Du, Suhuan ^{[2
]}

Liu, Xuemei ^{[3
]}

机构：

[1] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore

[2] China Railway 15th Bur Grp Co Ltd, Luoyang 471013, Peoples R China

[3] Queensland Univ Technol, Sch Civil Engn & Built Environm, Brisbane, Qld 4001, Australia

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2014年 / 73卷

关键词：

Interfacial transition zone; Nano-particles; Permeability; Pore size distribution; Porosity; Pozzolanic reaction; PORE STRUCTURE; CEMENT; MICROSTRUCTURE; MORTARS; STRENGTH;

D O I：

10.1016/j.conbuildmat.2014.10.014

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study investigated the durability properties of concrete containing nano-silica at dosages of 0.3% and 0.9%, respectively. Due to the nano-filler effect and the pozzolanic reaction, the microstructure became more homogeneous and less porous, especially at the interfacial transition zone (ITZ), which led to reduced permeability. Tests on the durability properties verified the beneficial effects of nano-silica. The channels for harmful agents through the cement composites were partially filled and blocked. The pore size distribution also indicated that the large capillary pores were refined by the nano-silica, due to the combined contribution of the nano-filler effect and the pozzolanic reaction. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：705 / 712

页数：8

共 29 条

[1]

[Anonymous], 1995, 443 NT BUILD NORDTES

[2]

[Anonymous], 2005, C39 ASTM

[3]

[Anonymous], 1999, 492 NT BUILD NORDTES

[4]

[Anonymous], 20 INT C COMP NAN BE

[5]

[Anonymous], 1988, 1881124 BS 124

[6]

[Anonymous], 2021, ASTM C642 13

[7]

*ASTM, 2004, C1585 ASTM

[8]

BS EN, 2009, BS EN 12390-8

[9] Hydration and properties of nano-TiO2 blended cement composites [J].

Chen, Jun ;

Kou, Shi-cong ;

Poon, Chi-sun .

CEMENT & CONCRETE COMPOSITES, 2012, 34 (05) :642-649

[10] The Effect of Carbon Nano- and Microfibers on Strength and Residual Cumulative Strain of Mortars Subjected to Freeze-Thaw Cycles [J].

Cwirzen, Andrzej ;

Habermehl-Cwirzen, Karin .

JOURNAL OF ADVANCED CONCRETE TECHNOLOGY, 2013, 11 (03) :80-88

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