Öğütülmüş Diyatomitin Kendiliğinden Yerleşen Harçların Erken Dayanımına Etkisi

Yıl 2024, Cilt: 3 Sayı: 3, 350 - 361, 31.10.2024

Büşra Karabulut , Merve Şahin Yön , Mehmet Karataş

https://doi.org/10.62520/fujece.1484058

Öz

Çimento üretimi doğaya salınan karbondioksit miktarını arttıran önemli bir etkendir. Bu nedenle çimento yerine puzolanik özellik gösteren doğal ve atık malzemelerin kullanımı oldukça önemlidir. Bu makalede, çimento ile ikame edilebilecek doğal puzolanik bir malzeme olan diyatomit kayacının kendiliğinden yerleşen harç üretiminde kullanılabilirliği araştırılmıştır. Deneysel çalışmada, öğütülmüş diyatomitin kendiliğinden yerleşen harçlarda erken yaştaki mekanik özelliklerine olan etkisini incelemek için 40×40×160 mm boyutlarında olan prizmatik numuneler; sırasıyla %0, %5, %10, %15, %20 oranında diyatomitin çimento ile değiştirilmesiyle üretilmiştir. kendiliğinden yerleşen harç elde etmek için çökme-akış testi, Avrupa Uzman Yapı Kimyasalları ve Beton Sistemleri Federasyonu kılavuzuna göre yürütülmüştür. %0, %5, %10, %15 ve %20 diyatomit kullanılarak hazırlanan numuneler 3 gün boyunca 23±2 ̊C sıcaklıktaki suda kürlenmeye tabi tutulmuştur. Kür süresi tamamlanan numunelerin 3 günlük (erken yaş) eğilme ve basınç dayanım değerleri elde edilmiştir. Bu deneysel çalışmanın sonucunda en yüksek dayanımların referans numuneleri de aşarak, %5 diyatomit içeren serilerde olduğu belirlenmiştir. Ayrıca karışımlardaki diyatomit oranının %5 ten fazla olmasıyla mekanik dayanımların azaldığı tespit edilmiştir.

Anahtar Kelimeler

Öğütülmüş diyatomit, Kendiliğinden yerleşen harç, Mekanik özellikler, Erken dayanım

Effect of Ground Diatomite on Early Strength of Self-Compacting Mortars

Öz

Portland cement fabrication is a significant factor that increases the amount of carbon dioxide released into nature. For this reason, it is very important to use natural and waste materials with pozzolanic properties instead of portland cement. In this article, the usability of diatomite rock, a natural pozzolanic material that can be substituted with portland cement, in the manufacture of self-compacting mortar was studied. In the experimental study, prismatic specimens with dimensions of 40 × 40 × 160 mm were used to examine the impact of ground diatomite on the early age mechanical properties of self-compacting mortar; it was produced by replacing 0%, 5%, 10%, 15%, 20% of diatomite with portland cement, respectively. The slump-flow test to obtain self-compacting mortar was conducted according to the European Federation of Specialized Construction Chemicals and Concrete Systems guidance. Specimens prepared using 0%, 5%, 10%, 15% and 20% diatomite were cured in water at 23±2 ̊C temperature for 3 days. 3-day (early age) flexural and compressive strength worths were gained for the samples whose curing period was completed. As a result of this experimental study, it was specified that the highest strengths were in the series containing 5% diatomite, exceeding the reference samples. Additionally, it has been determined that mechanical strength decreases when the diatomite ratio in mixtures is more than 5%.

Anahtar Kelimeler

Ground diatomite, Self-compacting mortar, Mechanical properties, Early strength

Kaynakça

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