Karaelmas Fen ve Mühendislik Dergisi

2146-7277

Zonguldak Bülent Ecevit Üniversitesi

10.7212/karaelmasfen.1260741

Engineering

Mühendislik

Geri Dönüştürülmüş Geopolimer Agregaları ile Üretilen Çimento Esaslı Harçların Mühendislik Özelliklerinin Araştırılması

Investigation of Engineering Properties of Cement-Based Mortars Produced with Recycled Geopolymer Aggregates

https://orcid.org/0000-0002-2577-696X

Ekmen

Şevin

HARRAN UNIVERSITY

https://orcid.org/0000-0001-7004-8403

Algın

Zeynep

HARRAN ÜNİVERSİTESİ

12 29 2023

13 2 235 247 03 06 2023 06 06 2023

2011

Karaelmas Fen ve Mühendislik Dergisi

Yapı malzemeleri üretiminde yüksek oranlarda kullanılan doğal agrega yerine inşaat atıklarından elde edilen geri dönüştürülmüş agrega kullanımı oldukça önemli bir yere sahiptir. Portland çimentosu bazlı malzemelerin geri dönüştürülmüş agregalar olarak geri dönüşümü yaygın olarak araştırılırken, geopolimerlerin yeniden kullanımına çok az odaklanılmıştır. Bu çalışma kapsamında çimento kullanımı devre dışı bırakılarak üretimi gerçekleştirilen geopolimer kompozitlerin atık hallerinin tekrar değerlendirilmesi amaçlanmıştır. %0, %50 ve %100 olmak üzere 3 farklı oranda geri dönüştürülmüş-geopolimer agregası (GDA) ikamesi ve %0, %0.2, %0.4 ve %0.6 oranlarında bazalt lif kullanımı ile 12 farklı çimentolu harç karışımı üretilmiştir. Üretilen harç karışımlarının yayılma çapı ve birim ağırlık deneyleri ile taze özelliklerinin, basınç dayanımı, eğilme dayanımı, su emme ve kılcal su emme deneyleri ile ise sertleşmiş özelliklerinin belirlenmesi hedeflenmiştir. GDA birim ağırlık değerlerini düşürürken, su emme değerlerinde belirgin bir artışa neden olmuştur. Tüm karışımlar için %0.4 oranının üzerinde bazalt lif kullanımı basınç dayanımı değerlerinde düşüşe neden olmuştur. En yüksek basınç dayanım değerine %0.2 bazalt lif oranı için, geri dönüştürülmüş agrega ikamesi yapılmamış numunede ulaşılmıştır. Kontrol karışımları için lif oranının artışına bağlı olarak eğilme dayanım değerleri artış gösterirken GDA içeren harçlarda en yüksek eğilme dayanım değerine %0.2 bazalt lif oranı ile ulaşılmıştır.

The use of recycled aggregate obtained from construction waste has a very important place instead of the natural aggregate used at high rates in the production of building materials. While the recycling of Portland cement-based materials as recycled aggregates has been widely investigated, the reuse of geopolymers has not been sufficiently focused. Within the scope of this study, it is aimed to reuse the waste states of geopolymer composites, which were produced by disabling the use of cement. 12 different cement-based mortar mixtures were produced by using recycled geopolymer aggregates (RA) in 3 different ratios as 0%, 50% and 100% and basalt fiber at 0%, 0.2%, 0.4% and 0.6% ratios. It was aimed to determine the fresh properties of the produced mortar mixtures by spreading diameter and unit weight tests, and to determine the hardened properties by compressive strength, flexural strength, water absorption and capillary water absorption tests. While the recycled geopolymer aggregate decreased the unit weight values, it caused a significant increase in the water absorption values. The use of basalt fiber above 0.4% for all blends caused a decrease in compressive strength values. The highest compressive strength value was obtained for the 0.2% basalt fiber content in the sample without recycled aggregate replacement. While the flexural strength values of the control mixtures increased depending on the increase in the fiber content, the highest flexural strength value was reached with the basalt fiber ratio of 0.2% for the mortars containing RA.

Bazalt lif Geri-dönüştürülmüş Geopolimer Agregası Çimento Harcı Taze ve Sertleşmiş Harç Özellikleri

Basalt Fiber Aggregate of Recycled Geopolymer Cement mortar Properties of Fresh and Hardened Mortar

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