Kot Atık Liflerinin Çimento Esaslı Hafif Kompozit Harçların Teknik Özelliklerine Etkisi

Yıl 2023, Cilt: 5 Sayı: 2, 71 - 90, 31.12.2023

Şevket Onur Kalkan , Halil İbrahim Öcal , Lütfullah Gündüz

https://doi.org/10.60093/jiciviltech.1304330

Öz

Bu çalışmanın amacı geri dönüştürülmüş kot atık liflerinin (KAL), çimento esaslı hafif kompozit harç (ÇHKH) takviyesi için kullanımını incelemektir. Bu araştırma, KAL eklemesinin, kıvam, taze ve sertleşmiş birim ağırlık, gözeneklilik, su emme, eğilme dayanımı, basınç dayanımı ve yük-deformasyon gibi ÇHKH'lerin çeşitli özelliklerini nasıl etkilediğini değerlendirmeye odaklanmaktadır. Farklı lif oranları (çimentonun ağırlıkça %0, %0.25, %0.50, %0.75, %1.00, %1.25 ve %1.50) ÇHKH'lara ilave edilerek kullanılmıştır. Test sonuçları, referans numunesine kıyasla hem taze hem de sertleşmiş birim ağırlıklarda hafif bir azalma olduğunu göstermiştir. Harçların kıvamının lif eklemesi arttıkça azaldığı gözlemlenmiştir. Ayrıca, çalışma kapsamında kullanılan bütün lif dozajlarının eklenmesinin hafif harçların mekanik özelliklerini artırdığı görülmüştür. Bu sonuçlara ilave olarak, referans harcı yük altında daha az deformasyon sergilemiş, bu da daha referans harcı için yüksek kırılganlığına işaret etmiştir. Ayrıca, bu çalışmada KAL’lerin harçların hem nihai yük taşıma kapasitesini hem de deformasyonunu aynı anda artırma yeteneğine sahip olduğunu tespit edilmiştir.

Anahtar Kelimeler

Kot atık lifi, Lif takviye, Hafif kompozit harç, Yük-deformasyon, Dayanım

Effect of Denim Waste Fibres on Technical Properties of Cementitious Lightweight Composite Mortars

Öz

The aim of this study was to investigate the utilization of recycled denim waste fibers (DWF) for reinforcing cementitious lightweight composite mortar (CLCM). The research focused on evaluating how the addition of DWF affected various aspects of CLCMs, such as flowability, fresh and hardened unit weight, porosity, water absorption, flexural strength, compressive strength, and load-deformation characteristics. Different proportions of fibers (0, 0.25, 0.50, 0.75, 1.00, 1.25, and 1.50 wt.% of cement) were incorporated into the CLCM. The results showed a slight decrease in both fresh and hardened unit weights compared to the reference. It was noted that the consistency of the mortars declined with the increasing addition of fibers. Additionally, the inclusion of any amount of fiber led to an enhancement in the mechanical properties of the lightweight mortars. Furthermore, the reference mortar exhibited less deformation under load, indicating its higher brittleness. Moreover, the study observed that the incorporation of DWFs had the ability to simultaneously improve both the ultimate load-bearing capacity and deformation of the mortars.

Anahtar Kelimeler

Denim waste fibre, Fibre reinforcement, Lightweight composite mortar, Load-deformation, Strength

Kaynakça

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