Influence of Steel Fibers on the Interfacial Shear Strength of Ternary Blend Geopolymer Concrete Composite

Mohan Gopika, Namasivayam Ganesan, Pookattu Vattarambath Indira, Veerappan Sathish Kumar, Gunasekaran Murali and Nikolai Ivanovich Vatin
Additional contact information
Mohan Gopika: Department of Civil Engineering, National Institute of Technology Calicut, Kozhikode 673601, India
Namasivayam Ganesan: Department of Civil Engineering, National Institute of Technology Calicut, Kozhikode 673601, India
Pookattu Vattarambath Indira: Department of Civil Engineering, National Institute of Technology Calicut, Kozhikode 673601, India
Veerappan Sathish Kumar: Department of Civil Engineering, National Institute of Technology Calicut, Kozhikode 673601, India
Gunasekaran Murali: Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
Nikolai Ivanovich Vatin: Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia

Sustainability, 2022, vol. 14, issue 13, 1-15

Abstract: Sustainable development is a major issue confronting society today. Cement, a major constituent of concrete, is a key component of any infrastructure development. The major drawback of cement production is that it involves the emission of CO 2 , the predominant greenhouse gas causing global warming. The development of geopolymers has resulted in a decrease in cement production, as well as a reduction in CO 2 emissions. During mass concrete production in the construction of very large structures, interfaces/joints are formed, which are potential failure sites of crack formation. Concrete may interface with other concrete of different strengths, or other construction materials, such as steel. To ensure the monolithic behavior of composite concrete structures, bond strength at the interface should be established. The monolithic behavior can be ensured by the usage of shear ties across the interface. However, an increase in the number of shear ties at the interface may reduce the construction efficiency. The present study aims to determine the interfacial shear strength of geopolymer concrete as a substrate, and high-strength concrete as an overlay, by adding 0.50%, 0.75%, and 1% crimped steel fibers, and two and three shear ties, at the interface of push-off specimens. It was found that three shear ties at the interface can be replaced by two shear ties and 0.75% crimped steel fibers. In addition, a method was proposed to predict the interface shear strength of the concrete composite, which was found to be comparable to the test results.

Keywords: geopolymer concrete; push-off specimen; interface shear strength; shear ties (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/14/13/7724/pdf (application/pdf)
https://www.mdpi.com/2071-1050/14/13/7724/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:13:p:7724-:d:846942

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().