Economic and Structural Evaluation of the Flexible Pavements Constructed with Different Construction and Demolition Wastes as Aggregates in Their Granular Bases

Orhan Kaya; Bahadır Ok

Makale detayları

Economic and Structural Evaluation of the Flexible Pavements Constructed with Different Construction and Demolition Wastes as Aggregates in Their Granular Bases

Yazarlar:

Orhan Kaya | Bahadır Ok

Yayıncı:

Giresun University

Ana Başlıklar:

İnşaat Mühendisliği

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.13 Issue 2, pp.734-751

Belge Tipi:

Makale

Yayın Tarihi:

6/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001291019

pISSN:

2564-7377

Anahtar kelimeler:

Özet:

 Recently, many studies have been searching for alternative sustainable road materials to natural crushed stone aggregate NA due to both its limited production and the destruction of the environment in the production stages. In this context, the aim of this study is to investigate the effect of the use of recycled aggregates as a granular base material, the granular base has specific gradation and aggrepate properties, called plant mix base PMT, on flexible pavement thickness and road construction cost. Within the scope of this study, NA and four different waste aggregates used in PMT were evaluated and pavement thicknesses for 135 different design scenarios, including three different road classes, natural soil bearing capacities and traffic conditions 5x3x3x3 were determined based on the AASHTO 93 pavement design method. The estimated road construction costs were also determined by using the unit prices of Turkish General Directory of Highway in 2023. When PMT formed with NA is used, it has been observed that the total asphalt pavement thickness was less than when using PMT formed with waste aggregates. Despite the differences in asphalt pavement thicknesses, the construction costs of the roads built with waste aggregates were found to be lower than those built with NA. It has been concluded that waste aggregates have the potential to be used in flexible pavement PMT layers due to the lack of excessive pavement thickness increase, the lower cost of road construction compared to that of NA and environmental benefits.

 Recently, many studies have been searching for alternative sustainable road materials to natural crushed stone aggregate NA due to both its limited production and the destruction of the environment in the production stages. In this context, the aim of this study is to investigate the effect of the use of recycled aggregates as a granular base material, the granular base has specific gradation and aggrepate properties, called plant mix base PMT, on flexible pavement thickness and road construction cost. Within the scope of this study, NA and four different waste aggregates used in PMT were evaluated and pavement thicknesses for 135 different design scenarios, including three different road classes, natural soil bearing capacities and traffic conditions 5x3x3x3 were determined based on the AASHTO 93 pavement design method. The estimated road construction costs were also determined by using the unit prices of Turkish General Directory of Highway in 2023. When PMT formed with NA is used, it has been observed that the total asphalt pavement thickness was less than when using PMT formed with waste aggregates. Despite the differences in asphalt pavement thicknesses, the construction costs of the roads built with waste aggregates were found to be lower than those built with NA. It has been concluded that waste aggregates have the potential to be used in flexible pavement PMT layers due to the lack of excessive pavement thickness increase, the lower cost of road construction compared to that of NA and environmental benefits.

 Recently, many studies have been searching for alternative sustainable road materials to natural crushed stone aggregate NA due to both its limited production and the destruction of the environment in the production stages. In this context, the aim of this study is to investigate the effect of the use of recycled aggregates as a granular base material, the granular base has specific gradation and aggrepate properties, called plant mix base PMT, on flexible pavement thickness and road construction cost. Within the scope of this study, NA and four different waste aggregates used in PMT were evaluated and pavement thicknesses for 135 different design scenarios, including three different road classes, natural soil bearing capacities and traffic conditions 5x3x3x3 were determined based on the AASHTO 93 pavement design method. The estimated road construction costs were also determined by using the unit prices of Turkish General Directory of Highway in 2023. When PMT formed with NA is used, it has been observed that the total asphalt pavement thickness was less than when using PMT formed with waste aggregates. Despite the differences in asphalt pavement thicknesses, the construction costs of the roads built with waste aggregates were found to be lower than those built with NA. It has been concluded that waste aggregates have the potential to be used in flexible pavement PMT layers due to the lack of excessive pavement thickness increase, the lower cost of road construction compared to that of NA and environmental benefits.

 Günümüzde hem üretiminin sınırlı olması hem de üretim aşamalarının çevreyi tahrip etmesinden dolayı doğal kırma taş agregaya DA alternatif olabilecek sürdürülebilir yol malzemelerini araştırmak ön plana çıkmıştır. Bu bağlamda, bu çalışmanın amacı geri dönüştürülmüş agregaların plent miks temel PMT olarak kullanımının esnek üstyapı kalınlığına ve yol yapım maliyetine etkisinin araştırılmasıdır. Bu çalışma kapsamında DA ve dört farklı atık agrega PMTde kullanılacak şekilde AASHTO 93 üstyapı tasarım yönteminde değerlendirilmiş ve üç farklı yol sınıfı, tabi zemin taşıma gücü ve trafik yoğunluğu olmak üzere 5x3x3x3 135 farklı tasarım senaryosu için üstyapı kalınlıkları ile Karayolları 2023 yılı birim fiyatları kullanılarak yaklaşık yol yapım maliyetleri hesaplanmıştır. DA ile teşkil edilen PMT kullanıldığında toplam kaplama kalınlığının atık agregalarla teşkil edilen PMTnin kullanılma durumuna göre daha az olduğu görülmüştür. Kaplama kalınlıklarındaki farklılıklara rağmen atık agregalarla inşa edilen yolların yapım maliyetleri DA ile inşa edilene göre daha düşük olmuştur. Kaplama kalınlığında fazla bir artış olmaması, yol yapım maliyetinin DAya göre daha az olması ve çevresel faydaları sebebi ile atık agregaların esnek üstyapı PMT tabakalarında kullanılma potansiyeline sahip olduğu sonucuna varılmıştır.

Makale detayları

Economic and Structural Evaluation of the Flexible Pavements Constructed with Different Construction and Demolition Wastes as Aggregates in Their Granular Bases

Yazarlar:

Orhan Kaya | Bahadır Ok

Yayıncı:

Giresun University

Ana Başlıklar:

İnşaat Mühendisliği

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.13 Issue 2, pp.734-751

Belge Tipi:

Makale

Yayın Tarihi:

6/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001291019

pISSN:

2564-7377

Flexible pavements

CDW

Granular base

AASHTO 93Esnek üstyapı

İnşaat ve yıkıntı atıkları

PMT

AASHTO 93

Sayı

Makale detayları

Yazarlar: Orhan Kaya | Bahadır Ok

Yayıncı: Giresun University

Ana Başlıklar: İnşaat Mühendisliği

Dergi: Karadeniz Fen Bilimleri Dergisi Vol.13 Issue 2, pp.734-751

Belge Tipi: Makale

Yayın Tarihi: 6/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001291019

pISSN: 2564-7377

Sayı

Yazarlar:

Orhan Kaya | Bahadır Ok

Yayıncı:

Giresun University

Ana Başlıklar:

İnşaat Mühendisliği

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.13 Issue 2, pp.734-751

Belge Tipi:

Makale

Yayın Tarihi:

6/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001291019

pISSN:

2564-7377