Replacement of OPC with RCP in concrete containing RCA (Investigation of mechanical, economic and environmental characteristics)

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Abdali kia Mahdi; OMIDINASAB FEREYDOON; Sahraei moghadam Amirhosein

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Journal Paper

Paper Information

Journal: Amirkabir Journal of Civil Engineering Year:2021 | Volume:53 | Issue:1 Page(s): 107-126

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Title

Replacement of OPC with RCP in concrete containing RCA (Investigation of mechanical, economic and environmental characteristics)

Author(s)

Abdali kia Mahdi | OMIDINASAB FEREYDOON | Sahraei moghadam Amirhosein

Keywords

Recycled aggregate

Recycled powder

Mechanical Properties

ENVIRONMENT

optimization

Abstract

This paper presents the results of an experimental study on the properties of ENVIRONMENTally friendly concrete. In the making of specimens, 0%, 15%, and 30% of ordinary Portland cement (OPC) was replaced by recycled concrete powder (RCP) and silica fume (SF). In addition, 0%, 50%, and 100% of natural aggregates (NA) was replaced by recycled concrete aggregates (RCA). In the production of RCA, 3 types of concrete waste with initial strength of 20, 40, and 80 MPa were used. In this study, rheological, mechanical (compressive, splitting tensile and flexural strengths), economic and ENVIRONMENTal (GWP) properties of 28 mix designs were investigated. The results showed that the use of RCA and RCP has a negative effect on rheological and Mechanical Properties. However, the results showed that the use of RCA and RCP has a positive effect on ENVIRONMENTal and economic properties. Moreover, the results indicated that the negative effect of RCA can be prevented by increasing the initial strength of RCA, and the negative effect of RCP can be prevented by using SF. Finally, by optimization of mixing designs, it was concluded that it is justified to use 50% of RCA with initial strength of 40 and 80 MPa and 30% of RCP and SF, in terms of rheological, mechanical, economic and ENVIRONMENTal properties.

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APA: Copy

Abdali kia, Mahdi, OMIDINASAB, FEREYDOON, & Sahraei moghadam, Amirhosein. (2021). Replacement of OPC with RCP in concrete containing RCA (Investigation of mechanical, economic and environmental characteristics). AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR), 53(1 ), 107-126. SID. https://sid.ir/paper/1009717/en

Vancouver: Copy

Abdali kia Mahdi, OMIDINASAB FEREYDOON, Sahraei moghadam Amirhosein. Replacement of OPC with RCP in concrete containing RCA (Investigation of mechanical, economic and environmental characteristics). AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR)[Internet]. 2021;53(1 ):107-126. Available from: https://sid.ir/paper/1009717/en

IEEE: Copy

Mahdi Abdali kia, FEREYDOON OMIDINASAB, and Amirhosein Sahraei moghadam, “Replacement of OPC with RCP in concrete containing RCA (Investigation of mechanical, economic and environmental characteristics),” AMIRKABIR JOURNAL OF CIVIL ENGINEERING (AMIRKABIR), vol. 53, no. 1 , pp. 107–126, 2021, [Online]. Available: https://sid.ir/paper/1009717/en

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