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Properties of Reactive Powder Concrete and its Utilizing as a Repair and Strengthen Materials.

Article

Last updated: 22 Jan 2023

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Civil Engineering

Abstract

This investigation aimed to study two phases. (Phase I) was to study the properties of reactive powder concrete (RPC) produced by two different curing regimes, namely, water curing at 20 oC and hot water curing at 60 oC. Moreover, the effect of using the RPC as a repair and strengthening materials (combined system) was also evaluated (Phase II). Different parameters include water to binder ratio and fiber types were considered. Based on the test results of the primary study (Phase I) of the RPC mixes, mixes of adequate flow and high compressive strength (with water curing 20 oC) were selected and used for both strengthening and repairing processes. The RPC as repair materials were evaluated by the compressive, flexural and bond (splitting and slant shear) strengths. The test results of Phase I showed that the RPC with compressive strength up to 110 and 140 MPa can be obtained in water curing at 20 oC and hot water curing at 60 oC, respectively. The test results of Phase II showed that the RPC displays excellent repair and retrofit potential on compression, flexure strengthening and possesses high bond strength as compared to substrate normal concrete (NC). The ratio of the increase of compressive strength of cylindrical specimens with 10 and 25 mm of wrapping with RPC are in the range of 25% to 114% and 42% to 142%, respectively as compared to substrate NC.            

DOI

10.21608/bfemu.2020.98090

Keywords

Reactive Powder Concrete, concrete properties, repair materials, Wrapping, slant shear strength

Authors

First Name

Mariam

Last Name

Ghazy

MiddleName

Farouk

Affiliation

Associate Professor, Faculty of Engineering, Structural Engineering Department, Tanta University

Email

dr.mariamghazi@yahoo.com

City

-

Orcid

-

First Name

Mohamed

Last Name

Taman

MiddleName

Helmy

Affiliation

Associate Professor, Faculty of Engineering, Structural Engineering Department, Tanta University

Email

taman010@yahoo.com

City

-

Orcid

-

First Name

Rana

Last Name

El Ahwal

MiddleName

Mohamed

Affiliation

M.Sc. Student, Faculty of Engineering, Structural Engineering Department, Tanta University

Email

ranabassuonii@gmail.com

City

-

Orcid

-

Volume

42

Article Issue

3

Related Issue

14853

Issue Date

2017-09-01

Receive Date

2017-06-18

Publish Date

2020-06-25

Page Start

21

Page End

29

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 42_Issue 3_Pages 21-29.pdf

PDF . 884.0kB

Link

https://bfemu.journals.ekb.eg/article_98090.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=98090

Order

6

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

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Details

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Article

Created At

22 Jan 2023