Title

Transport Properties of Nano-Silica Contained Self-Consolidating Concrete

Document Type

Article

Publication Date

9-27-2021

Publication Title

Construction and Building Materials

Volume

301

First page number:

1

Last page number:

11

Abstract

The transport properties of various self-consolidating concretes (SCCs) containing nano-silica (NS) were investigated. Powder NS replaced a portion of the cementitious materials at different replacement levels ranging from 1.5 to 7.5% by weight. The flow, bulk, and transport properties of the studied SCCs were obtained. The investigated transport properties included water and capillary absorption, water penetration, rapid chloride permeability, rapid migration, and chloride diffusion. The transport properties of the SCCs containing NS were also compared to those of the equivalent SCCs containing micro-silica (MS), as well as those of the control SCCs. Test results showed that the transport properties of the studied SCCs improved with increases of NS replacing a portion of cementitious materials, as well as with the extension of curing age. The SCCs containing MS produced slightly better transport properties than the companion SCCs containing powder NS.

Keywords

Curing; Fresh performance; Micro-silica; Nano-silica; Self-consolidating concrete; Transport properties

Disciplines

Construction Engineering and Management

Language

English

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