Beta
ManageSearchChatDiscover
114774

THE IMPACT OF THE TIME WHEN CASTING THE SECOND LAYER OF CONCRETE ON ITS MECHANICAL PROPERTIES

Article

Last updated: 04 Jan 2025

OverviewSimilar Items

Subjects

-

Tags

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

Abstract

Cold joint is one of concreting problem due to delay of casting the second layer. This is due to glitch of one of mechanical machines such as the concrete mixer, concrete truck, concrete batching plants, concrete pumps, and concrete mobile; that cause the stopping of the casting process which produce forced separator. Forced separation is different from known separators like: construction joint, expansion joint and settlement joint, where its location event and shape cannot be determined moreover the design engineer cannot put that in mind during the design phase of building construction. Therefore, the target in this work is to study the effect of delay in time period when casting the second layer of concrete after 4, 9, and 16 hour for two types of concrete with compressive strength 250 kg/cm2 and 300 kg/cm2. Eexperimental work was performed at laboratory to investigate the mechanical properties of concrete (compressive strength, splitting tensile strength and flexural strength), first when sprinkle the first layer with water before casting and second when coated with a grout material.The results were investigated and it indicates that, in case of delaying in the time period for casting the second layer, there is a great effect on the mechanical properties of concrete and the use of grout coating material in forced separation has a positive impact on improving its mechanical properties.

DOI

10.21608/jesaun.2013.114774

Keywords

delay in casting concrete, forced separation, concrete joints

Authors

First Name

H. A.

Last Name

Mohamadien

MiddleName

-

Affiliation

Civil Engineering Department, Faculty of Engineering, Suez Canal University, Ismailia, Egypt

Email

h_mohamadien@yahoo.com

City

-

Orcid

-

Volume

41

Article Issue

No 3

Related Issue

16851

Issue Date

2013-05-01

Receive Date

2013-03-16

Publish Date

2013-05-01

Page Start

919

Page End

929

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 41_Issue No 3_Pages 919-929.pdf

PDF . 448.1kB

Link

https://jesaun.journals.ekb.eg/article_114774.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=114774

Order

8

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

THE IMPACT OF THE TIME WHEN CASTING THE SECOND LAYER OF CONCRETE ON ITS MECHANICAL PROPERTIES

Details

Type

Article

Created At

23 Jan 2023