Investigation of the Effect of Lignin on Aged Bitumen

Ömer Genç; Başak Varli Bingöl

Makale detayları

Investigation of the Effect of Lignin on Aged Bitumen

Yazarlar:

Ömer Genç | Başak Varli Bingöl

Yayıncı:

Giresun University

Ana Başlıklar:

Ulaştırma Mühendisliği

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.14 Issue 4, pp.1748-1757

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001333396

pISSN:

2564-7377

Anahtar kelimeler:

Özet:

 Globally, sustainability is an important issue. Bitumen is obtained from crude oil, is solid at ambient temperature, almost completely soluble in toluene, is in a non-volatile, sticky form, and is defined as a waterproofing material. In terms of low carbon dioxide emissions, the asphalt industry is looking for more sustainable options. Lignin is one of the most common natural polymers on earth. Its role is to hold the chemical components, which is the wall material, together in the matrix structure in plant cells and to provide resistance. Millions of tons of lignin are released after pulp production which is considered waste material. Depolymerized fractions cause significant environmental problems due to toxic chemical structures. In this study, short-term aged bitumen was modified by lignin at the rates of 15 and 20 to bitumen weight, and conventional Penetration Test, Ductility Test, and Scanning Electron Microscope SEM analysis were carried out to determine the rheological effect. In addition, it was aimed at determining the effective rate of lignin usage. In conclusion, the current research aimed to demonstrate that lignin, as a value-added modifier, is a promising solution with both environmental and engineering values. Also, as the lignin rate increased, the hardening rate of short-term aged bitumen increased in both penetration and ductility tests. Furthermore, SEM data revealed that particles with irregular surfaces are homogeneously distributed in aged bitumen. However, with the increase in usage rate, the distribution of lignin particles in bitumen became irregular.

 Globally, sustainability is an important issue. Bitumen is obtained from crude oil, is solid at ambient temperature, almost completely soluble in toluene, is in a non-volatile, sticky form, and is defined as a waterproofing material. In terms of low carbon dioxide emissions, the asphalt industry is looking for more sustainable options. Lignin is one of the most common natural polymers on earth. Its role is to hold the chemical components, which is the wall material, together in the matrix structure in plant cells and to provide resistance. Millions of tons of lignin are released after pulp production which is considered waste material. Depolymerized fractions cause significant environmental problems due to toxic chemical structures. In this study, short-term aged bitumen was modified by lignin at the rates of 15 and 20 to bitumen weight, and conventional Penetration Test, Ductility Test, and Scanning Electron Microscope SEM analysis were carried out to determine the rheological effect. In addition, it was aimed at determining the effective rate of lignin usage. In conclusion, the current research aimed to demonstrate that lignin, as a value-added modifier, is a promising solution with both environmental and engineering values. Also, as the lignin rate increased, the hardening rate of short-term aged bitumen increased in both penetration and ductility tests. Furthermore, SEM data revealed that particles with irregular surfaces are homogeneously distributed in aged bitumen. However, with the increase in usage rate, the distribution of lignin particles in bitumen became irregular.

 Globally, sustainability is an important issue. Bitumen is obtained from crude oil, is solid at ambient temperature, almost completely soluble in toluene, is in a non-volatile, sticky form, and is defined as a waterproofing material. In terms of low carbon dioxide emissions, the asphalt industry is looking for more sustainable options. Lignin is one of the most common natural polymers on earth. Its role is to hold the chemical components, which is the wall material, together in the matrix structure in plant cells and to provide resistance. Millions of tons of lignin are released after pulp production which is considered waste material. Depolymerized fractions cause significant environmental problems due to toxic chemical structures. In this study, short-term aged bitumen was modified by lignin at the rates of 15 and 20 to bitumen weight, and conventional Penetration Test, Ductility Test, and Scanning Electron Microscope SEM analysis were carried out to determine the rheological effect. In addition, it was aimed at determining the effective rate of lignin usage. In conclusion, the current research aimed to demonstrate that lignin, as a value-added modifier, is a promising solution with both environmental and engineering values. Also, as the lignin rate increased, the hardening rate of short-term aged bitumen increased in both penetration and ductility tests. Furthermore, SEM data revealed that particles with irregular surfaces are homogeneously distributed in aged bitumen. However, with the increase in usage rate, the distribution of lignin particles in bitumen became irregular.

 Sürdürülebilirlik dünya genelinde önemsenen bir konudur. Bitüm, ham petrolden elde edilerek, ortam sıcaklığında katı olan, tolüen içerisinde tamamına yakını çözünen, uçucu olmayan, yapışkan formda olup, su yalıtım malzemesi olarak tanımlanır. Asfalt piyasası düşük karbondioksit emisyonu açısından sürdürülebilirliği daha yüksek alternatifler aramaktadır. Bitümün kısmen yerini alabilen alternatif sürdürülebilir bağlayıcıların kullanımı karbondioksit emisyonlarının azaltılmasına katkıda bulunur. Lignin, yeryüzünde en fazla bulunan doğal polimerlerden birisidir. Rolü, bitki hücrelerinde, çeper maddesi olan kimyasal bileşenleri matris yapı içinde bir arada tutmak ve direnç sağlamaktır Kâğıt hamuru üretimi sonrası milyonlarca ton lignin açığa çıkmakta, bunlar atık olarak görülmektedir. Depolimerize olan fraksiyonlar, yapılarındaki toksik kimyasal yapılardan dolayı önemli çevre sorunlarına sebep olmaktadır. Çalışma kapsamında laboratuvar ortamında kısa dönem yaşlandırılmış bitüm, ağırlığınca 15 ve 20 oranlarında lignin eklenmesiyle modifiye edilmiş, reolojik etkisinin belirlenmesi için geleneksel Penetrasyon ve Süneklik Deneyleri yapılarak ve Taramalı Elektron Mikroskobu SEM görüntüleri analiz edilmiştir. Bununla beraber lignin kullanımının etkin oranının belirlenmesi hedeflenmiştir. Elde edilen bulgular, lignin kullanımının artmasıyla, gerek penetrasyon gerekse de süneklik testlerinde, bitümde sertleşme oranını arttırdığını göstermiştir. Ayrıca, SEM verilerine dayanarak, lignin parçacıklarının yüzeyi düzensiz moleküller olduğu ve bitüm içerisinde homojen dağıldığı gözlenmiştir. Fakat, kullanım oranının artması ile lignin parçacıkları bitüm içerisindeki dağılımı düzensizleşmiştir.

Makale detayları

Investigation of the Effect of Lignin on Aged Bitumen

Yazarlar:

Ömer Genç | Başak Varli Bingöl

Yayıncı:

Giresun University

Ana Başlıklar:

Ulaştırma Mühendisliği

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.14 Issue 4, pp.1748-1757

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001333396

pISSN:

2564-7377

Sustainability

Lignin modified bitumen

Bitumen microstructureSürdürülebilirlik

Lignin modifiyeli bitüm

Bitüm mikroyapısı

Sayı

Makale detayları

Investigation of the Effect of Lignin on Aged Bitumen

Yazarlar: Ömer Genç | Başak Varli Bingöl

Yayıncı: Giresun University

Ana Başlıklar: Ulaştırma Mühendisliği

Dergi: Karadeniz Fen Bilimleri Dergisi Vol.14 Issue 4, pp.1748-1757

Belge Tipi: Makale

Yayın Tarihi: 12/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001333396

pISSN: 2564-7377

Sustainability

Lignin modified bitumen

Bitumen microstructureSürdürülebilirlik

Lignin modifiyeli bitüm

Bitüm mikroyapısı

Sayı

Yazarlar:

Ömer Genç | Başak Varli Bingöl

Yayıncı:

Giresun University

Ana Başlıklar:

Ulaştırma Mühendisliği

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.14 Issue 4, pp.1748-1757

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001333396

pISSN:

2564-7377