Investigation of the Usability of ANFIS and Fuzzy Logic Methods in Estimation of Foam Bitumen Expansion Ratio and Half Life Parameters

Abstract

Thanks to the technological advances, asphalt production temperatures can be lowered and performance mixes similar to hot mixes can be obtained. The trend of lowering asphalt production temperatures and the popularity of materials recycling are gradually increasing due to the negative environmental effects caused by the heating of hot mix asphalt materials, that is, aggregate and bitumen at high temperatures.

Recycling with foam bitumen method, applied using foam bitumen and recycled / natural aggregate is a method that has environmental and economic advantages. The first step to prepare a suitable mixture with foam bitumen is to determine the most ideal foaming properties (expansion ratio and half life) of the bitumen to be used in the mixture.

For this reason, foaming properties of different asphalt cements are determined experimentally. In addition, the foaming properties of bitumens used in experiments were modeled using Fuzzy Logic and ANFIS methods and the results were compared with the experimental data.

In the light of the data obtained, it was concluded that the use of all bitumen used for different foaming water percentages provides the minimum foaming properties recommended in the literature and the estimation methods used support experimental data with similar results.

Keywords

• Foam Bitumen
• Expansion Ratio
• Half Life
• ANFIS
• Fuzzy Logic

ANFIS ve Bulanık Mantık Yöntemlerinin Köpük Bitümün Genleşme Oranı ve Yarılanma Süresi Parametreleri Tahmininde Kullanılabilirliğinin Araştırılması

Abstract

Teknolojik gelişmeler sayesinde asfalt üretim sıcaklıkları düşürülerek sıcak karışımlara benzer performanslı karışımlar elde edilebilmektedir. Sıcak karışım asfaltların malzemelerinin yani agrega ve bitümün yüksek sıcaklıklarda ısıtılması nedeniyle yarattıkları olumsuz çevresel etkiler, üretim maliyetlerinde meydana gelen sürekli artış ve hammadde kaynaklarındaki azalma nedenleriyle asfalt üretim sıcaklıklarının düşürülmesi eğilimi ve malzemelerin geri kazanımının popülerliği giderek artmaktadır.

Köpük bitüm ve geri kazanılmış/doğal agrega kullanılarak uygulanan köpük bitümle geri kazanım yöntemi, çevresel ve ekonomik olarak avantajları olan bir yöntemdir. Köpük bitümle uygun bir karışım hazırlayabilmek için ilk aşama, karışımda kullanılacak bitümün en ideal köpürme özelliklerinin (genleşme oranı ve yarılanma süresi) doğru şekilde belirlenebilmesidir. Bu nedenle çalışmada, farklı asfalt çimentolarının köpürme özellikleri deneysel olarak belirlenmiştir. Ayrıca deneylerde kullanılan bitümlerin köpürme özellikleri Bulanık Mantık ve ANFIS yöntemleri kullanılarak modellenmiş ve sonuçlar deneysel olarak elde edilen verilerle kıyaslanmıştır.

Elde edilen veriler ışığında kullanılan tüm bitümlerin farklı köpürtme su yüzdeleri için kullanımlarının literatürde önerilen minimum köpürme özelliklerini sağladığı ve kullanılan tahminleme yöntemlerinin benzer sonuçlarla deneysel verileri desteklediği sonucuna ulaşılmıştır.

Keywords

• Köpük Bitüm
• Genleşme Oranı
• Yarılanma Süresi
• ANFIS
• Bulanık Mantık

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