Mermer Tozu ve Uçucu Külün Çimento Harçlarının Mekanik Özelliklerine Etkisi

Year 2021, Volume: 21 Issue: 5, 1137 - 1145, 31.10.2021

Cüneyt Doğan İsmail Demir

https://doi.org/10.35414/akufemubid.977280

Cited By: 2

Abstract

Mermer tozu ve uçucu kül, yapı teknolojisi üzerinde önemli bir etkiye sahiptir. Uçucu kül ve mermer tozu, farklı özelliklerde çimento esaslı kompozitlerin üretilmesine olanak sağlar. Bu çalışmada, harçlarda mermer tozu ve uçucu kül kullanımı incelenmiş ve bu malzemelerin harcın mukavemet özellikleri üzerindeki etkisini belirleyen çalışmanın sonuçları sunulmuştur. Çalışmada CEM I 42.5 R çimentosu ile ince agreganın mermer tozu, uçucu kül ve uçucu kül ile birlikte mermer tozu ikame edildiği toplam 15 harç karışımı üretilmiştir. Sabit (0.58) su/çimento oranıyla üretilen numunelere 7 ve 28 günlük eğilme ve basınç testleri uygulanmıştır. Numunelerin mikro yapısı XRD tekniği ile incelenmiştir. Mermer tozunun standart kum ile %5 oranında ikame edilmesi basınç ve eğilme dayanımını arttırdığı belirlenmiştir. Ayrıca, %20 uçucu kül ikamesi, harçlarda 49.5 MPa basınç mukavemeti elde edilerek en yüksek mekanik özellikler bulunmuştur. Benzer şekilde, %15 mermer tozu ve %15 uçucu kül kullanımının harçların mekanik özelliklerini iyileştirdiği tespit edilmiştir. Uçucu külün puzolanik özelliklerinin sayesinde harçta oldukça etkili bir katkı malzemesi olduğu ve uçucu kül ile mermer tozunun çimento esaslı kompozitlerde kullanımı çevreyi korumak için önemli uygulama olduğu sonucuna varılmıştır.

Keywords

Mermer Tozu, Uçucu Kül, Çimento Harcı, Mekanik Özellikler

The Effect of Marble Powder and Fly Ash on Mechanical Properties of Cement Mortars

Abstract

Marble powder and fly ash have a significant influence on building technology. Fly ash and marble powder allow the production of cement-based composites with different properties. The use of marble powder and fly ash in mortars was researched and the findings of the study to understand the effect of these materials on mortar were presented. The fine aggregate was substituted with marble powder, fly ash, and both marble powder and fly ash in a total of 15 mortar mix produced with CEM I 42.5 R cement. 7 and 28 days bending and compression tests were applied to the samples produced with a constant (0.58) water/cement ratio. The microstructure of the samples was investigated by XRD technique. In the substitution of standard sand with marble powder, it was discovered that a 5% substitution increased flexural and compressive strength. Similarly, 20% fly ash substitution in mortars resulted in maximum mechanical properties, with a compressive strength of 49.5 MPa. It was also determined that using 15% marble powder and 15% fly ash increased the mechanical properties of mortars. It has been concluded that fly ash is a very effective additive in mortar thanks to its pozzolanic properties, and the use of fly ash and marble dust in cement-based composites is an important application to protect the environment.

Keywords

Marble Powder, Fly ash, Cement Mortar, Mechanical Properties

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