İnce agrega ile yer değiştirmiş olan CaCO3takviyeli ve takviyesiz polipropilenlerin geleneksel beton özelliklerine etkilerinin incelenmesi

Year 2018, Volume 24, Issue 7, 1338 - 1342, 28.12.2018

Barış ŞİMŞEK Tayfun UYGUNOĞLU

Abstract

Düşük yoğunluk değerine, yüksek ısı ve korozyon direncine sahip olan polipropilen gittikçe yapı malzemeleri sektörü için daha cazip hale gelmektedir.  Bununla birlikte polipropilenin tek başına kullanımı yapı malzemesinin mekanik dayanımını düşürmesi bakımından bazı dezavantajlar içerir. Polipropilenin yapı malzemeleri içerisindeki uygulamalarında bu dezavantajın ortadan kaldırılması için polipropilen kompozitleri tercih edilmektedir. Bu çalışmada, CaCO₃ takviyeli polipropilen içeren betonun tanımlanan kalite ölçütleri sırası ile termal iletkenlik, elektrik direnci, 3, 7, 28 gün basınç dayanımları, 28 günlük yarmada çekme dayanımı ve su emme oranı olarak belirlenmiştir. Deneylerde ince agrega yerine %0, %10, %20, %30 ve %40 oranlarında CaCO₃ takviyeli polipropilen kullanılmıştır. Dolgulu CaCO₃/PP takviyeli beton özellikleri kontrol betonu ile kıyaslandığında %34.5 daha düşük 28 günlük basınç dayanımına, %24.7 oranında daha düşük termal iletkenliğe, %50.7 daha yüksek elektrik direncine sahiptir.

Keywords

CaCO3 Takviyeli PP (CaCO3/PP), Elektrik direnci, Polimer beton, Termal iletkenlik

Examination of the effects of CaCO3 reinforced and unreinforced polypropylenes which is substituted with a fine aggregate on traditional concrete properties

Abstract

Polypropylene with low density and high heat, corrosion resistance is becoming increasingly more attractive for the building materials sector. However, the use of polypropylene alone has some disadvantages in terms of reducing the mechanical strength of the building material. Polypropylene composites are preferred in order to eliminate this disadvantage in polypropylene construction materials applications. In this study, the thermal conductivity, electrical resistance, 3, 7, 28-day compressive strength, 28-day tensile strength and water absorption ratio of concrete containing CaCO₃-reinforced polypropylene were determined as quality criteria. In the experiments, 0%, 10%, 20%, 30% and 40% of CaCO₃ reinforced polypropylene was used instead of fine aggregate. The reinforced concrete properties of filled CaCO₃/PP have a 28 day compressive strength of 34.5% lower than that of the control concrete, 24.7% lower thermal conductivity and 50.7% higher electrical resistance.

Keywords

CaCO3 Reinforced PP(CaCO3/PP), Electrical resistivity, Polymer concrete, Thermal conductivity

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