KYB'de Kullanılan Cam Kumun KYB Yük-Deplasman İlişkisinin Davranışı Üzerindeki Etkisinin Araştırılması

Doğada atık olarak bulunan cam, özellikle son yıllarda sıcaklığın artmasıyla birlikte ormanlık alanlarda ve düzenli depolama alanlarında çıkan yangınların sebepleri arasında görünmektedir. Çalışma kapsamında atık sahalarından ve doğal ortamdan toplanan atık soda cam şişeleri öğütüldükten sonra 0.25-0.5 mm arasında eleklerden geçirilerek ayrıştırılmıştır. Bu cam kum ile üretilen kendiliğinden yerleşen beton (KYB), içindeki doğal kum ile değiştirilmiştir. Doğal kum ve cam kumu, hacimce %5 ila %35 arasında %5'lik artışlarla ikame edilmiştir. KYB, yönetmeliklerle ilgili standartları sağladığı taze özellik testleri ile test edilmiştir. Elde edilen karışımlardan 7 ve 28 günlük numunelerde gerilme-şekil değiştirme ilişkileri elde edilmiştir. Elde edilen bu ilişkiler literatürde sıklıkla kullanılan beton modeli ile karşılaştırılarak değerlendirilmiştir. Ortaya çıkan yük-deplasman ilişkilerinin özellikle 7 günlük yaşta iyi bir şekilde seçilen modele yakınsadığı ancak özellikle başlangıç kısmında 28 günlük yaşta kullanılan modelden ayrıldığı görülmüştür.

Anahtar Kelimeler:

Atık cam, cam kumu, kendiliğinden yerleşen beton, stress-deformaasyon ilişkisi

Investigation of the Effect of Glass Sand Used in SCC on the Behavior of the SCC Stress- Strain Relationship

Glass, who is found as a waste in nature, seems to be among the causes of fires in forest areas and landfills, especially with the increase in temperature in recent years. Within the scope of the study, waste soda glass bottles collected from waste sites and natural environment were separated by passing through 0.25-0.5 mm sieves after grinding. The self-compacting concrete (SCC) produced with this glass sand were replaced with the natural sand inside. Natural sand and glass sand were substituted in increments of 5% between 5% and 35% by volume. SCC were tested with fresh feature tests where it provides regulatory standards. Stress-strain relationships were obtained for 7- and 28-days old samples from the mixtures obtained. These relations were evaluated by comparing them with the concrete model, which is frequently used in the literature. It was observed that the resulting stress-strain relations converged well to the model chosen especially at the age of 7 days but diverged from the model used at the age of 28 days, especially in the initial part.

Keywords:

Glass sand, stress-strain relationship, waste glass, self compacting concrete,

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