Cr (kırıntı kauçuk) ile modifiye edilmiş bağlayıcıyla hazırlanan poroz asfalt karışımların yarı-rijit kaplamaların mekanik özelliklerine etkisi

Year 2026, Volume: 14 Issue: 1, 199 - 215, 21.01.2026

Alev Akıllı El , Mehmet Yılmaz , Erkut Yalçın

https://doi.org/10.29130/dubited.1742105

Abstract

Bu çalışmada, Yarı rijit üstyapıda kullanılan CR (kırıntı kauçuk) ile modifiye edilmiş Poroz asfalt karışımın temel mühendislik özelliklerine ve performansına göre tasarlanması ve hazırlanmasına yönelik deneysel çalışmalar sunulmuştur. Çalışmada Poroz asfalt karışımların hazırlanması için farklı agrega gradasyonları kullanılarak boşluk yüzdesi belirlenmiş, karışımlarda bazalt ve kalker agregası olarak iki farklı kökene sahip agrega, 160/220 saf bitüm ve CR modifiye katkı malzemesi kullanılmıştır. Ayrıca yarı rijit üstyapı karışım numuneleri elde etmek için boşlukların doldurulmasında kullanılan çimento harç özellikleri verilmiştir. Yarı rijit karışım numuneleri üzerinde mühendislik özelliklerinin değerlendirilmesi için çimento harcına akışkanlık ve basınç dayanım deneyi, karışım numuneleri üzerinde cantabro, marshall, basınç ve permeabilite deneyleri yapılmıştır. Deneylerin sonuçlarına göre Poroz asfalt karışımlarında kullanılan CR modifiye bağlayıcıların Yarı rijit karışımların performans özelliklerini arttırdığı belirlenmiştir.

Keywords

Poroz asfalt , yarı-rijit üsyapı , Cr (kırıntı kauçuk)

Project Number

123M766

Effect of CR-Modified Binders on the Mechanical Properties of Semi-Rigid Pavements Prepared with Porous Asphalt Mixtures

Abstract

In this study, experimental investigations were conducted to evaluate the fundamental engineering properties and performance of porous asphalt mixtures modified with CR (crumb rubber) for use in semi-rigid pavement structures. During the design of the porous asphalt mixtures, different aggregate gradations were used to determine air void contents. Two types of aggregates with different origins (basalt and limestone), 160/220 penetration grade pure bitumen, and CR-modified binder were utilized in the mixtures. The properties of the cement mortar used to fill the voids in the porous asphalt mixtures were also examined in detail for the production of semi-rigid pavement specimens. Flowability and compressive strength tests were performed on the cement mortar, while Cantabro loss, Marshall stability, compressive strength, and permeability tests were conducted on the semi-rigid composite specimens. The experimental results revealed that the use of CR-modified binders in porous asphalt mixtures significantly improved the mechanical performance of the semi-rigid pavement structures.

Keywords

Porous asphalt , Semi-rigid pavement , CR (crumb rubber)

Ethical Statement

This study does not involve human or animal participants. All procedures followed scientific and ethical principles, and all referenced studies are appropriately cited.

Supporting Institution

This study was supported by the TÜBİTAK 1002 – Rapid Support Program, Project No: 123M766.

Project Number

123M766

Thanks

This work has been derived from the PhD research conducted by A. A. EL. We would like to thank the Scientific and Technological Research Council of Turkey (TÜBİTAK) for supporting this study with research project number 123M766.

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