EXPERIMENTAL RESEARCH OF WASTE PET AND FOUNDRY SAND RECYCLING INTO BRICKS

Abstract

In this study, the aim is to produce PET-sand bricks that are more durable, lighter, more economical, have less water absorption, and have less thermal conductivity compared to clay bricks by using waste polyethylene terephthalate (PET) and waste foundry sand in different proportions. During the experiment, PET is allowed to melt, and the heated FS is gradually added to the container and mixed with the PET continuously. After the bricks were produced at different ratios, they were subjected to three-point bending, impact, water absorption, and thermal conductivity tests. The three-point bending test shows that the brick with the highest percentage of PET, S1, has the highest maximum stress, which is 17.04 MPa. The impact test result shows that S1 (1:2) and S2 (1:3) are impact-resistant and good-quality bricks. In the water absorption test, the results showed that S1 (1:2) has the lowest water absorption with 0.35%. Lastly, in the thermal conductivity test, it was determined that the red brick had the lowest thermal conductivity with 0.713 W/mk. All bricks produced in different proportions weigh less than red bricks. Moreover, since the production of PET-sand bricks does not require a long-term and high-temperature ceramic kiln, as in red brick, energy savings are provided, and the production of PET-sand is more economical.

Keywords

• Recycle
• PET
• brick
• foundry sand
• sustainable construction material

ATIK PET VE DÖKÜM KUMUNUN TUĞLAYA GERİ DÖNÜŞÜMÜNÜN DENEYSEL ARAŞTIRMASI

Abstract

Bu çalışmada, atık polietilen tereftalat (PET) ve atık döküm kumu (FS) farklı oranlarda kullanılarak kil tuğlalara göre daha dayanıklı, daha hafif, daha ekonomik, daha az su emilimine sahip ve daha düşük ısı iletkenliğine sahip PET-kum tuğlaları üretmek amaçlanmıştır. Deney sırasında PET'in erimesine izin verilmiş ve ısıtılmış FS kaba yavaş yavaş eklenerek sürekli olarak PET ile karıştırılmıştır. Tuğlalar farklı oranlarda üretildikten sonra üç nokta eğme, darbe, su emme ve ısı iletkenliği testlerine tabi tutulmuştur. Üç nokta eğme testi, en yüksek PET yüzdesine sahip tuğla olan S1'in 17,04 MPa ile en yüksek maksimum gerilime sahip olduğunu göstermiştir. Darbe testi sonucu, S1 (1:2) ve S2 (1:3) tuğlalarının darbeye dayanıklı ve kaliteli tuğlalar olduğunu göstermiştir. Su emme testinde ise sonuçlar S1 (1:2)'in %0,35 ile en düşük su emilimine sahip olduğunu göstermiştir. Son olarak, ısı iletkenlik testinde, kırmızı tuğlanın 0,713 W/mk ile en düşük ısı iletkenliğine sahip olduğu belirlenmiştir. Farklı oranlarda üretilen tüm tuğlalar, kırmızı tuğlalardan daha hafiflerdir. Ayrıca, PET-kum tuğlalarının üretimi, kırmızı tuğlada olduğu gibi uzun süreli ve yüksek sıcaklıkta seramik fırın gerektirmediğinden enerji tasarrufu sağlanmakta ve PET-kum üretimi daha ekonomik olmaktadır.

Keywords

• Geri dönüşüm
• PET
• tuğla
• döküm kumu
• sürdürülebilir inşaat malzemesi

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