HAM PETROL KALINTISI İLE ÜRETİLEN BİTÜMLERİN SUYA KARŞI DUYARLILIKLARININ BELİRLENMESİ

Öz

Trafik hacmindeki ve dingil yüklerindeki artışlar ile toplumların güvenli yolculuk kalitesi talebi asfalt kaplamaların daha dayanımlı olarak inşa edilmesini zorunlu hale getirmektedir. Asfalt kaplamaların hizmet ömrü boyunca sağlayabileceği konfor ve dayanım parametreleri, büyük ölçüde karışımlarda kullanılan bitümlü bağlayıcının özelliklerine bağlıdır. Kaplamalarda meydana gelen en önemli deformasyon türlerinden biri de sudan kaynaklanan bozulmalardır. Bitümlü kaplamalarda sudan kaynaklanan bozulmaların seviyesi; kullanılan agreganın çeşidine, bitümlü bağlayıcının özeliklerine, karışım tasarımına, trafik, çevresel etkenler ile bitümlü bağlayıcıya eklenen katkılara bağlıdır. Çalışmanın amacı, ülkemizde üretilen iki farklı rafinerinden alınan bitüm örneklerine farklı içeriklerde ham petrol kalıntısı eklenerek hazırlanmış karışımların soyulma potansiyeli ve neme karşı duyarlılık özelliklerinin saptanmasıdır. Hazırlanan örneklerin bu özellikleri, Nicholson Soyulma Deneyi (ASTM D 1664), mineral malzeme ile bitümün adezyon yeteneğini belirleme (GOST 11508-74) deneylerinden edinilen sonuçlar ve Leica S 8 AP0 Stereo Mikroskobu kullanılarak çekilen görüntüler ile yorumlanmıştır. Deneysel çalışma sonuçlarına göre, kaynağı farklı bitümlere, farklı oranlarda ham petrol kalıntısı ilavesinin asfalt karışımlar üzerinde suya bağlı bozulmaları azalttıkları ve kaplamanın neme karşı direncini arttırdıkları gözlemlenmiştir.

Anahtar Kelimeler

• Soyulma,Suya Bağlı Bozulma,Ham Petrol Kalıntısı

EVALUATION OF MOISTURE SUSCEPTIBILITY CHARACTERISTICS OF BITUMENS INVOLVING CRUDE OIL RESIDUES

Öz

With the increase in traffic volume and axle loads, the demand of safe travel quality for communities makes necessary to build durable asphalt pavements. The comfort and durability parameters that asphalt pavements can provide over the service life depend on the properties of the bitumen used in asphalt mixtures. One of the major causes of pavement failure is also the moisture induced damage of asphalt pavements. Many variables affect the level of water damage in asphalt pavement layer such as the type of aggregate, bitumen, mixture design and construction, level of traffic, environment and the additive properties that are introduced to the bitumen. This study is the aimed to determine the effect of 1%, 2% and 3% addition of crude oil residues within the bitumens on the stripping potential and moisture susceptibility characteristics of asphalt mixtures. Moisture susceptibility characteristics of the samples have been evaluated by Nicholson Stripping Test (ASTM D 1664) and determination of adhesion ability by using mineral material (GOST 11508-74) as well as images by captured Leica S 8 AP0 Stereo microscope respectively. The results of experimental study indicated that  addition of different contents of crude oil residues within the bitumens increased the resistance of asphalt mixtures to stripping.

Anahtar Kelimeler

• Stripping,Water Damage,Crude Oil Residue,Moisture Susceptibility

Kaynakça

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