Experimental study on ASR performance of concrete with nano-particles

被引：11

作者：

Zhang, Maohua ^{[1
]}

Zhang, Wenyue ^{[1
]}

Xie, Fating ^{[1
]}

机构：

[1] Northeast Forestry Univ, Sch Civil Engn, Harbin 150040, Heilongjiang, Peoples R China

来源：

JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEERING | 2019年 / 18卷 / 01期

关键词：

Alkali-silica reaction; nano-particles; water; micro-level; MECHANICAL-PROPERTIES; SILICA; NANO-SIO2; HYDRATION;

D O I：

10.1080/13467581.2019.1582420

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Alkali-silica reaction (ASR) is a serious durability problem, resulting in significant maintenance and reconstruction cost of concrete infrastructure all over the world, so more and more attention has been attracted to it. This paper tends to discuss whether nano-SiO2 and nano-Fe2O3 can mitigate the concrete deterioration caused by ASR. The test results show that the concretes with nano-particles have lower expansion and higher sonic velocity. Therefore, it is an available method for concrete to mix with nano-particles to mitigate ASR and the optimum content of nano-SiO2 and nano-Fe2O3 in concrete is 2.0% and 1.0%, respectively. The mitigating mechanism is revealed through the effect of mixing water on the porosity.

引用

页码：3 / 9

页数：7

共 24 条

[1]

[Anonymous], 2009, THESIS

[2]

[Anonymous], 2002, NANOSTRUCTURED TECHN

[3]

[Anonymous], THESIS

[4]

Boehm H.-P., 1980, Angew. Chem, V92, P328, DOI DOI 10.1002/ANGE.19800920433

[5] Aggregation and gel formation in basic silico-calco-alkaline solutions studied: A SAXS, SANS, and ELS study [J].

Gaboriaud, F ;

Nonat, A ;

Chaumont, D ;

Craievich, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (28) :5775-5781

[6] Study of the influence of alkaline ions (Li, Na and K) on the structure of the silicate entities in silico-alkaline sol and on the formation of the silico-calco-alkaline gel [J].

Gaboriaud, F ;

Chaumont, D ;

Nonat, A ;

Hanquet, B ;

Craeivich, A .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 1998, 13 (1-3) :353-358

[7]

GLASSER LSD, 1981, CEMENT CONCRETE RES, V11, P1

[8] Effects of nano-silica and nano-limestone on flowability and mechanical properties of ultra-high-performance concrete matrix [J].

Li, Wengui ;

Huang, Zhengyu ;

Cao, Fangliang ;

Sun, Zhihui ;

Shah, Surendra P. .

CONSTRUCTION AND BUILDING MATERIALS, 2015, 95 :366-374

[9] Influence of nano-TiO2 on physical and hydration characteristics of fly ash-cement systems [J].

Ma, Baoguo ;

Li, Hainan ;

Li, Xiangguo ;

Mei, Junpeng ;

Lv, Yang .

CONSTRUCTION AND BUILDING MATERIALS, 2016, 122 :242-253

[10]

Mehta P.K., 2017, CONCRETE MICROSTRUCT

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