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125545

EFFECT OF SUPERPLASTICZER ON SILICA FUME POZZOLANIC CEMENT

Article

Last updated: 04 Jan 2025

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Subjects

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Tags

Civil Engineering: structural, Geotechnical, reinforced concrete and s…nd sanitary engineering, Hydraulic, Railway, construction Management.

Abstract

Silica fume is a by-product in the production of silicon or its alloys. It is very fine material and has a surface area = 20 m2 /gm. It is a siliceous material and contains (85-95) % SiO2 in an amorphous state. It reacts with lime in the presence of moisture at normal temperature to form calcium silicate. The aim of the present work is to study the effect of silica fume substitution on the characteristics of ordinary Portland cement. Different mixes of OPC and various proportions of silica fume with and without superplasticizer were prepared in tap water and hydrated up to 90 days. The hydration behavior was followed by measuring the free lime and porosity. Also, the physico-mechanical properties of each mix were measured such as water of consistency, setting times compressive and splitting strengths. The results have shown that, the water of consistency increases with silica fume content which adversely affects the mechanical properties, especially at a high content (above 8.0 Wt., %). In order to improve the physico-mechanical properties of OPC-silica fume pozzolanic cement, superplasticizer must be added. The free lime content of blended cement pastes decreases with curing time and silica fume contents. Useful conclusions and recommendations concerning the use of silica fume with OPC in the production of blended cements were obtained.

DOI

10.21608/jesaun.2010.125545

Keywords

Silica fume (SF), Ordinary Portland cement (OPC), Hydration behavior, Physico mechanical properties

Authors

First Name

Magdy A.

Last Name

Abd El.Aziz

MiddleName

-

Affiliation

Associate Prof. of Structural Eng., Faculty of Eng., Fayoum University

Email

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City

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Orcid

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Volume

38

Article Issue

No 4

Related Issue

16876

Issue Date

2010-07-01

Receive Date

2010-01-06

Publish Date

2010-07-01

Page Start

883

Page End

893

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 38_Issue No 4_Pages 883-893.pdf

PDF . 440.3kB

Link

https://jesaun.journals.ekb.eg/article_125545.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=125545

Order

1

Type

Research Paper

Type Code

1,438

Publication Type

Journal

Publication Title

JES. Journal of Engineering Sciences

Publication Link

https://jesaun.journals.ekb.eg/

MainTitle

EFFECT OF SUPERPLASTICZER ON SILICA FUME POZZOLANIC CEMENT

Details

Type

Article

Created At

23 Jan 2023