GERİ DÖNÜŞTÜRÜLMÜŞ BETON AGREGASI KULLANILARAK ÜRETİLEN HARÇLARDA YÜKSEK SICAKLIK ETKİSİNİN ARAŞTIRILMASI

Year 2021, , 108 - 115, 30.03.2021

Emriye Çınar , Behcet Dündar , Tayfun Uygunoğlu

https://doi.org/10.21923/jesd.711026

Cited By: 1

Abstract

Bu çalışmada, Geri Dönüştürülmüş Beton Agregasının (GDA) harç numunelerinde kullanımı ve yüksek sıcaklık altında harçlara etkisi araştırılmıştır. Harç numuneleri 40x40x160 mm boyutlarında üretilmiştir. İnce agrega haline getirilen GDA, harç üretiminde kullanılan kırma kum ile %25, %50 %75 ve %100 oranlarında yer değiştirme yapılmıştır. Harç numuneler 28 gün standart kür sonunda 200, 400, 600 ve 800 ⁰C sıcaklıklara maruz bırakılmıştır. Uygulanan sıcaklık sonrası ultrases geçiş hızı, ağırlık kayıpları, eğilme ve basınç dayanımları belirlenmiştir. GDA’nın artmasıyla birlikte harçların fiziksel ve mekanik özeliklerinde azalmalar meydana gelmiştir. Sıcaklığın artmasıyla birlikte de ultrases geçiş hızı, basınç ve eğilme dayanımlarında azalma görülmüştür.

Keywords

Harç, Yüksek Sıcaklık, beton atığı, Geri Dönüştürülmüş Agrega, Sürdürülebilirlik

INVESTIGATION OF THE HIGH TEMPERATURE EFFECT ON MORTARS PRODUCED BY USING RECYCLED CONCRETE AGGREGATE

Abstract

In this study, the use of Recycled Concrete Aggregate (RCA) in mortar samples and their effects on mortars under high temperature were investigated. Mortar samples were produced in the dimensions of 40x40x160 mm. GDA, which has been converted into fine aggregate, has been replaced with 25%, 50% 75% and 100% of the sand used in mortar production. Mortar samples were exposed to 200, 400, 600 and 800 ⁰C after 28 days of standard curing. After the applied temperature, ultrasonic pulse velocity, weight losses, flexural and compressive strengths were determined. With the increase of RCA, there was a decrease in the physical and mechanical properties of the mortars. Along with the increase in temperature, ultrasonic pulse velocity, compressive and flexural strengths were also decreased.

Keywords

Mortar, High Temperature, Concrete Waste, Recycled Aggregate, Sustainability

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