Volkanik tüf esaslı geopolimerlerin basınç dayanımına kür süresi ve sıcaklığın etkileri

Yıl 2021, Cilt: 11 Sayı: 2, 530 - 536, 15.04.2021

Sevgi Özen

https://doi.org/10.17714/gumusfenbil.866828

Cited By: 1

Öz

Çimento klinkeri üretimi esnasında atmosfere salınan CO2 gazı sera etkisi nedeniyle küresel ısınmaya neden olmaktadır. Günümüzde bu durum çok tehlikeli boyutlara ulaşmış olup insan yaşamını tehdit eder hale gelmiştir. Bu noktada klinker içermeyen geopolimer üretimi bilim insanları tarafından etkili bir çözüm olarak sunulmaktadır. Bu çalışmada volkanik tüf esaslı geopolimerlerin Portland çimentosuna alternatif kullanım potansiyelleri araştırılmıştır. Araştırma neticesinde volkanik tüf katkılı geopolimerin zeolit içermemesine rağmen makul basınç dayanım değerlerine ulaştığı ve dolayısıyla inşaat sektöründe üretim potansiyelinin bulunduğu tespit edilmiştir. Volkanik tüf esaslı geopolimer dayanımı üzerinde esas etkili mineralin feldispat olduğu, bunun yanında kuvars mineralinin hammaddenin fiziksel özelliklerine etki dolayısıyla geopolimerleşme üzerinde pozitif etkisinin olduğu tespit edilmiştir. Ayrıca, yüksek erken basınç dayanım için yüksek sıcaklıklarda termal kür işlemi, yüksek geç basınç dayanım için ise düşük sıcaklıklarda termal kür işlemi önerilmektedir.

Anahtar Kelimeler

Basınç dayanım, Geopolimer, Kür süresi, Sıcaklık, Volkanik tüf

Effect of curing time and temperature on compressive strength of volcanic tuff-based geopolymer

Öz

During cement clinker production, CO2 gases released into the atmosphere causes Global warming due to the greenhouse effect. Nowadays, this situation has reached very dangerous levels and threatened the human life. At this point, the production of clinker free-geopolymer is offered by scientist as an effective solution. In this study, the potential of usability of volcanic tuff-based geopolymer to the Portland cement was investigated. As a result of the research, although the volcanic tuff-based geopolymer does not contain zeolite, it has reached reasonable compressive strength values, and therefore has a production potential in the construction sector. It has been determined that the main effective mineral on the strength of volcanic tuff-based geopolymer is feldspar, besides, quartz has a positive effect on the geopolymerization due to the effect on the physical properties of the raw material. In addition, thermal curing at high temperatures is recommended for high early compressive strength achievements, and thermal curing at low temperatures is recommended for high late strength achievements.

Anahtar Kelimeler

Compressive strength, Geopolymer, Curing time, Temperature, Volcanic Tuff

Kaynakça

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