Atık Mineral Yünlerin Jeopolimer Üretiminde Kullanımının İncelenmesi

Abstract

Mineral yünler inşaat sektöründe yaygın olarak kullanılan yalıtım malzemeleridir; ancak geri dönüştürülemeyen yapıları çevresel bir sorun teşkil etmektedir. Bu çalışmada, mineral yün atıkları toz haline getirilip Na₂SiO₃ ve NaOH çözeltileri ile aktifleştirilerek sürdürülebilir bir şekilde değerlendirilmiştir. Üretim sürecinde farklı Na₂SiO₃ silika modülü oranları (2.0, 2.5 ve 3.0) incelenmiş ve optimum oran 2.5 olarak belirlenmiştir. Numunelerin mekanik özellikleri çeşitli sıcaklıklarda (25°C, 50°C, 75°C ve 100°C) kürlendikten sonra değerlendirilmiş ve en yüksek basınç dayanımı 59,2 MPa ile cam yünü numunelerinde gözlenmiştir. Termal kürleme, cam yünü bazlı numuneler için özellikle 75°C'de basınç dayanımını artırmıştır. Ayrıca, numunelerin basınç dayanımları 90 günlük bir kürleme süresinden sonra stabilize olmuştur. Bu bulgular, mineral yün atıklarının yüksek performanslı malzemelere geri dönüştürülmesinin uygulanabilirliğini göstermekte ve termal kürlemenin mekanik özelliklerin geliştirilmesindeki önemli rolünü vurgulamaktadır.

Keywords

• Jeopolimer
• alkali aktivasyonu
• mineral yün
• taş yünü
• cam yünü

Investigation of Waste Mineral Wool in Geopolymer Production

Abstract

Mineral wools are widely used insulation materials in the construction industry; however, their non-recyclable nature poses an environmental challenge. In this study, mineral wool wastes were sustainably utilized by grinding them into powder and activating them with Na₂SiO₃ and NaOH solutions. During the production process, different silica modulus ratios of Na₂SiO₃ (2.0, 2.5, and 3.0) were examined, and the optimal ratio was determined to be 2.5. The mechanical properties of the samples were evaluated after curing at various temperatures (25°C, 50°C, 75°C, and 100°C), with the maximum compressive strength of 59.2 MPa observed in glass wool samples. Thermal curing enhanced compressive strength, particularly at 75°C, for glass wool-based samples. Additionally, the compressive strengths of the samples stabilized after a curing period of 90 days. These findings demonstrate the feasibility of recycling mineral wool wastes into high-performance materials and highlight the significant role of thermal curing in enhancing mechanical properties.

Keywords

• Geopolymer
• Alkaline activation
• Mineral wool
• Rock wool
• Glass wool

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