Effects of Basalt Fibre Utilization on Durability and Mechanical Properties of SIFCON

Yıl 2022, Cilt: 12 Sayı: 2, 231 - 241, 24.12.2022

Zeynep Algın , Erdal Özbebek , Sümeyra Gerginci , Kasım Mermerdaş

Öz

The basalt fibre utilisation in Slurry Infiltrated Fibre Concrete (SIFCON) production has been studied to investigate how the durability and mechanical properties of SIFCON are affected by the basalt fibre replacement with steel fibre. Steel fibre with a length of 30 mm and the basalt fibre having a length of 24 mm are used in the SIFCON mixtures with the replacement ratios of 0%, 25%, 50%, 75% and 100% by volume. The extensive laboratory studies have been conducted to specify compressive strength, flexural strength, sorptivity, water absorption, acid attack and Bohme abrasion resistance in terms of the basalt fibre replacement variation. The results reveal that the increment in basalt fibre replacement ratio decreases the compressive strength and the capillary water absorption while increasing the water absorption values. No significant change in the flexural strength is observed up to 50% basalt fibre utilisation and lower weight loss values are specified in this range for the SIFCON samples exposed to acid solution. The highest Bohme abrasion resistance is identified for samples having the basalt fibre replacement ratio of 25%. The results signifies that the basalt fibre utilisation provides advantages considering the variations in flexural strength, physical and chemical degradation.

Anahtar Kelimeler

SIFCON, Basalt fibre, Strength, Permeability, Acid attack, Abrasion resistance

Bazalt Lif Kullanımının SIFCON’un Dayanıklılık ve Mekanik Özelliklerine Etkisi

Öz

Bu çalışmada SIFCON üretiminde çelik lif yerine bazalt lif kullanımının SIFCON'un dayanıklılık ve mekanik özelliklerini nasıl etkilediği araştırılmıştır. SIFCON numunelerinde, 24 mm uzunluğundaki bazalt lif hacimce %0, %25, %50, %75 ve %100 oranlarında 30 mm uzunluğundaki çelik lif ile yer değiştirilerek kullanılmıştır. SIFCON numunelerinin dayanıklılık ve mekanik özelliklerini belirlemek için basınç dayanımı, eğilme dayanımı, su emme, kılcal su emme, asit saldırısı ve Böhme aşınma direnci deneyleri yapılmıştır. Sonuçlar, bazalt lifin yer değiştirme oranındaki artışla SIFCON numunelerinin su emme değerinin arttığını, basınç dayanımı ve kılcal su emme değerlerinin ise azaldığını göstermiştir. %50 oranına kadar bazalt lif kullanımı, SIFCON numunelerinin eğilme dayanımı sonuçlarında önemli bir değişikliğe neden olmamıştır. Asit çözeltisine maruz bırakılan SIFCON numuneleri için %50 oranına kadar bazalt lif içeren numunelerde elde edilen ağırlık kaybı değerlerinin daha düşük olduğu belirlenmiştir. En yüksek Böhme aşınma direnci %25 oranında bazalt lif içeren SIFCON numunelerinde elde edilmiştir. Sonuç olarak, eğilme dayanımı, fiziksel ve kimyasal aşınma deneylerindeki değişimler göz önüne alındığında SIFCON üretiminde bazalt lif kullanımı avantaj sağlamaktadır.

Anahtar Kelimeler

SIFCON, Bazalt lif, Dayanım, Geçirimlilik, Asit saldırısı, Aşınma direnci

Kaynakça

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