Experimental Investigation of Electrical Resistance Properties of High Performance Concretes Produced With Different Types of Additives

Year 2022, Volume: 14 Issue: 2, 958 - 966, 31.07.2022

Cagatay Belgin

https://doi.org/10.29137/umagd.1099064

Abstract

Standard concrete is a building material that is not electrically conductive by its nature and has a high electrical resistance to be accepted as an insulator. However, in the last 10 years, researches carried out in this subject has revealed that, reducing the electrical resistance of concrete and making it electrically conductive will provide great opportunities in different application areas and that this property change is a change that can provide significant advantages in different application areas where concrete is used. When the literature is examined, the application areas of reducing the electrical resistance of the concrete and enabling it to conduct electricity include concrete road pavements that can be used against frost and thaw, field room applications produced to prevent electromagnetic wave propagation, and self-deformation change that can be determined according to the electrical resistance change, which can be used in structural health monitoring applications can be counted as special concretes. The basic thing that needs to be done in order to realize all such applications is to change the electrical resistance properties of the concrete and make the concrete a material that can conduct electricity. Within the scope of this study, a study was carried out on the creation of a mixture composition that can be used to change the electrical resistivity properties of concrete. Within the scope of the study, after the production of 25025030 mm concrete slab test elements prepared using 3 different fiber types, electrical resistance properties were measured and which type of mixture and fiber additive reduced the electrical resistance properties of the concrete in the best way and increased the electrical conductivity of the concrete was experimentally investigated

Keywords

High Performance Concrete, Electric Conducting Concrete, Activated Carbon, Graphite, Steel Fiber

Farklı Katkı Malzemeleri Kullanılarak Üretilen Yüksek Performanslı Betonların Elektrik Direnç Özelliklerinin Deneysel Olarak İncelenmesi

Abstract

Standart beton doğası gereği elektrik iletkenliği olmayan, yalıtkan olarak kabul edilebilecek kadar elektrik direnci yüksek olan bir yapı malzemesidir. Ancak betonun elektrik direncinin düşürülmesi ve elektrik iletken hale getirilmesinin farklı uygulama alanlarında çok büyük olanaklar sağlayacağı ve bu özellik değişiminin beton malzemesinin kullanıldığı farklı uygulama alanlarında önemli avantajlar sağlayabilecek bir değişim olduğu son 10 yılda bu konuda yapılan araştırmalar ile ortaya konulmuştur. Literatür incelendiğinde betonun elektrik direncinin azaltılarak elektriği iletmesinin sağlanmasının uygulama alanları arasında don çözülmesine karşı kullanılabilecek beton yol kaplamaları, elektromanyetik dalga yayılımını engellemek amacıyla üretilen sağır oda uygulamaları, yapısal sağlık takibi uygulamalarında kullanılabilecek kendi üzerindeki deformasyon değişimini elektriksel direnç değişimine göre tespit edilebilecek kendiliğinden deformasyon değişimi ifade edilebilen özel betonlar olarak sayılabilir. Bu tür uygulamaların hepsinin gerçekleştirilebilmesi için yapılması gereken temel şey betonun elektrik direnç özelliklerini değiştirerek betonun elektrik iletebilen bir malzeme haline getirilmesidir. Bu çalışma kapsamında betonun elektriksel direnç özelliklerinin değiştirilmesi için kullanılabilecek bir karışım kompozisyonunun oluşturulması ile ilgili bir çalışma yapılmıştır. Çalışma kapsamında 3 farklı katkı kullanılarak hazırlanan 25025030 mm boyutlarında beton plak deney elemanlarının üretilmesinden sonra elektriksel direnç özellikleri ölçülerek hangi türde karışımın ve lif katkısının betonun elektriksel direnç özelliklerini en iyi şekilde düşürdüğü ve betonun elektrik iletimini artırdığı deneysel olarak araştırılmıştır.

Keywords

Yüksek Performanslı Beton, Elektrik İleten Beton, Aktif Karbon, Grafit, Çelik Lif

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