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In this study, it was studied that the abrasion resistance and characteristics of polymer composites with fly ash (FA). The epoxy based polymer composites are produced with resin and FA as mineral additive. Mixtures of different ratio by replacing the FA were added to the resin from 0 to 30% by weight. Polymeric samples were cured in air conditioning and they were taken from the molds after 24 hours. Polymeric samples gain ultimate strength after 7 days. Therefore, abrasion tests were performed on 7 aged specimens. Abrasion characteristics of polymer composites were defined by pin-on-disc test for 500 m under a dry friction condition and room temperature. Three types of loading conditions were carried out as 5, 10, 15 and 30 N. The hardness and wear resistance values increased with the increase in the content of fly ash. Showing the relationship between wear rate and hardness, an equation with parameters dependent on load was provided. There was an increase in the friction coefficient with an increase in the surface roughness values. In addition, dynamic friction was as a function of the wear rate. The wear surfaces of the polymer composites were analyzed using scanning electron microscopy. It was observed that the wear rate of the polymer composites and pure epoxy samples ranged from 17.82 to 172.96 mm 3 /Nm.

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ÖZETBu çalışmanın amacı ana hammadde olarak genleştirilmiş perlit agregası kullanarak duvar örgü elemanı üretilebilirliğinin araştırılmasıdır. Bu amaçla üretilen kontrol numunesinin (50x100x100 mm ebadında) birim hacim ağırlık (BHA), mekanik özellikler gibi mühendislik özellikleri ile beraber, üretim parametreleri (pişme süresi, pişme sıcaklığı, sıkıştırma basınç oranı, kimyasal katkı oranı, boyut analizi ve su/katı oranı) belirlenerek optimize edilmiştir. Sıkıştırma basıncı, pişme sıcaklığı, pişme süresi, bekleme (kür) süresi gibi tasarım parametreleri değiştirilerek, numune üretimi için en etkin değerler belirlenmiştir. Çalışmalar sonucunda, su/katı oranı 1,0 olan, 50 bar basınçta üretilen ve 200ºC sıcaklıkta 1 saat süreyle pişirilen numunelerden en düşük birim hacim ağırlık 522,5±48,3 kg/m 3 ve en yüksek basınç dayanımı 12,13±0,13 kg/cm 2 olarak tespit edilmiştir. Ancak, doğal bağlayıcı kullanmadan üretilen kontrol numune için elde edilen basınç dayanımı değerleri TS EN 771-1 sınır değerlerinin altında bulunmuştur.Anahtar Kelimeler: Genleştirilmiş perlit agregası, Yapı malzemesi, Basınç dayanımı, Pişme sıcaklığı INVESTIGATION OF AVAILABILITY OF EXPANDED PERLITE IN THE PRODUCTION OF CONSTRUCTION MATERIAL ABSTRACTThe aim of this study is investigation of wall stone reproducibility using expanded perlite aggregate as a main raw material. For this purpose, production parameters (burning period, burning temperature, pressing pressure ratio, chemical additive ratio, dimension analysis and water/solid (w/s) ratio and also engineering parameters such as weight per unit of volume, mechanical properties of produced control brick (with a dimension of 50x100x100 mm) were determined and optimized. The most effective values for the brick production were designated by changing optimization parameters like pressing pressure, burning temperature, burning period, holding (curing) time. As a result of the study, the lowest value of weight per unit of volume and the highest value of compressive strength were ascertained as 522.5±48.3 kg/m 3 and 12.13±0.13 kg/cm 2 respectively for the samples which were produced at 50 bar pressure and 200ºC temperature with 1 h burning period and w/s ratio of 1.0. However, obtained compressive strength values for the control sample produced without using binder were found to lower the standards of TS EN 771-1.

Turkey is the world leader in the production of pumice and boron. Emet (Colemanite) and Kırka (Borax) minerals are produced in Turkey. There are also rich deposits of pumice in various regions of Turkey. In this study, chemical, physical and mechanical properties of pumice bricks produced in different recipes using colemanite, tincal and boron waste instead of cement as binders were determined and optimized. At the end of the study, the final product was formed by determining the best mix ratio from the produced samples (5x10x20 cm). According to the test results: the strength values of the bricks produced from (A2-2-A2-3) coded mixtures yielded the best results (3,63-3,33 Mpa). However, heat conduction coefficient (0,1504-0,1739W/mK), water absorption (32%) and porosity (37.1%) according to the best results again (A2-2-A2-3) was obtained from prescription bricks. XRD, SEM, EDX, TGA-DTA analyzes were performed to characterize the obtained products.