Yüksek sıcaklığa maruz kalan çimento esaslı lifli kompozitlerde karışım parametrelerinin etkisi

Muhammed Yusuf Gözkeser; Serhat Demirhan; Berfin Ramazanoğlu; Necim Kaya

doi:10.17341/gazimmfd.1389629

Research Article

Yüksek sıcaklığa maruz kalan çimento esaslı lifli kompozitlerde karışım parametrelerinin etkisi

Year 2025, Volume: 40 Issue: 3, 1797 - 1812

Muhammed Yusuf Gözkeser , Serhat Demirhan , Berfin Ramazanoğlu , Necim Kaya

https://doi.org/10.17341/gazimmfd.1389629

Abstract

Yüksek sıcaklık etkisi altında karışım parametrelerine bağlı olarak çimento esaslı lif donatılı kompozitlerin temel mühendislik özelliklerinin incelenmesi mevcut çalışmanın temel amacını teşkil etmektedir. Bu amaç doğrultusunda, 36 farklı karışım tasarlanmıştır. Bu karışımlarda pirinç kaplı çelik lif ve polipropilen lifi kullanılmıştır. Üretilen numuneler, su, hava ve poşette kür olmak üzere üç farklı kür rejiminde test yaşına kadar bekletilmiştir. 7, 28 ve 90 günlük kür yaşları için numuneler 250 °C sıcaklığa maruz bırakılıp, öncesi ve sonrası şartlar için mikroyapısal özelliklere ilave olarak basınç dayanımı ve ultrases dalgası geçiş hızı gibi temel mühendislik özellikleri incelenmiştir. Tasarımda, tüm karışımlar için hava sürükleyici katkı oranı, su/bağlayıcı oranı ve agrega/bağlayıcı oranı sırasıyla %0,6, 0,3 ve 1,5 olarak sabit seçilmiştir. Deney sonuçları, polipropilen liflerin çimento esaslı matrislerde kullanılmasının, yüksek sıcaklık etkisi altında basınç dayanımı gibi temel mekanik özellikleri üzerine çok az bir etkiye sahip olduğunu ve polipropilen liflere kıyasen çelik lif kullanımında artık mekanik özelliklerin geliştiğini göstermiştir. Hibrit lif kullanılarak üretilen numunelerin performans özellikleri PP lif içeren lif donatılı kompozitlere göre daha iyi gözlemlenirken, pirinç kaplı çelik lif içeren numunelere göre daha kötü olduğu tespit edilmiştir.

Keywords

Basınç dayanımı, ultrases dalgası geçiş hızı, taramalı electron mikroskopu, yüksek sıcaklık, kür rejimi

Supporting Institution

Batman Üniversitesi Bilimsel Araştırma Projeleri Koordinatörlüğü

Project Number

BTÜBAP-2022-YL-17

Thanks

Mevcut deneysel araştırma, Batman Üniversitesi Bilimsel Araştırma Projeleri Koordinatörlüğü (BTÜBAP) tarafından BTÜBAP-2022-YL-17 proje kimliği ile finansal olarak desteklenmiştir. Yazarlar, mali desteğinden dolayı BTÜBAP'a teşekkür etmektedir.

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