Title

Enhancing the reactivity of normal and fly ash concrete using colloidal nano-silica

Document Type

Article

Publication Date

2009

Publication Title

American Concrete Institute Special Publication

Volume

267

First page number:

75

Last page number:

86

Abstract

The authors aim to investigate the effect of using colloidal nano-silica on the properties of concrete especially for the case of fly ash concrete. The study includes a laboratory study on six concrete mixtures in which three have 30% of the cement content replaced with fly ash, while the others were normal cement concrete mixtures. Two ratios of colloidal nano-silica were added to concrete with and without fly ash to examine its effect. Testing was conducted to assess the reactivity and the durability of the studied mixtures, including adiabatic temperature test, compressive strength test, splitting tensile strength test, and rapid chloride penetration test. Results show the addition of nano-silica can enhance the reactivity and early age strength of fly ash concrete mixtures to match normal concrete mixtures. Furthermore, the use of nano-silica improved the mechanical properties and reduced the permeability of concrete.

Keywords

Concrete--Additives; Concrete--Permeability; Fly ash; Nanocomposites (Materials); Silica

Disciplines

Civil and Environmental Engineering | Nanoscience and Nanotechnology | Structural Engineering | Structural Materials

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Identifier

ISBN: 9781615678303; DOI: 10.14359/51663284

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