Year 2020, Volume 7 , Issue 2, Pages 1084 - 1093 2020-12-30

Influence of Preheating on the Mechanical Properties of High Strength Concrete with Micro Silica Filler
Mikro Silika Dolgulu Yüksek Dayanımlı Betonun Mekanik Özelliklerine Ön Isıtmanın Etkisi

Ibrahim ALAMERİ [1] , Meral OLTULU [2] , Metehan ARDAHANLI [3]


The early-age temperature of concrete containing silica fume is very important due to the tendency of the silica-fume surface to react quickly and increase strength. The curing method directly affects the permeability, strength, and durability of concrete. In this study, the effects of preheating on the compressive, splitting tensile and flexural tensile strengths of concrete with different ratios of silica fume were investigated. Three different mold type samples were used: 15 × 15 × 15 cm cube samples for the compression test, 10 × 20 cm cylinder samples for the tensile test, and 7 × 7 × 28 cm beam samples for the bending tensile strength test. As a mineral additive, silica fume was replaced by 8%, 10%, and 12% by weight of cement. Two groups were prepared for the test, group A was left in water for 4 weeks, group B was preheated for 1 day at 75°C, and then left in water for 4 weeks. The results showed that the best addition of silica fume was 10%, which increased workability and reduced the effect of early-age temperature.
Silis dumanı içeren betonun erken yaş sıcaklığı, silis dumanı yüzeyinin hızlı reaksiyon gösterme ve mukavemeti artırma eğilimi nedeniyle çok önemlidir. Kür metodu geçirimliliği, dayanımı ve durabiliteyi doğrudan etkiler. Bu çalışmada farklı oranlarda silis dumanı içeren betonların basınç dayanımı, eğilmede çekme dayanımı ve yarmada çekme dayanımı 2 kür metodunda araştırılmıştır. Basınç dayanımı için 15 × 15 × 15 cm küp numuneler, çekme deneyi için 10 × 20 cm silindir numuneler ve eğilme dayanımı için 7 × 7 × 28 cm kiriş numuneler olmak üzere 3 farklı kalıp kullanılmıştır. Silis dumanı ağırlıkça çimento yerine mineral katkı olarak %8, %10, %12 oranlarında kullanılmıştır. Deney için 2 grup hazırlanmış olup birinci grup 4 hafta su küründe iken ikinci grup ise 1 gün boyunca 75℃’de ön ısıtma etkisinde ve sonrasInda 4 hafta su küründe tutulmuştur. Slump testi kullanılarak taze beton özellikleri araştırıldığında en yüksek slump değerinin ve basınç dayanımı, yarmada çekme dayanımı ve eğilmede çekme dayanımında da en iyi sonuçların %10 silis dumanı içeren numunelerde olduğu görülmüştür.
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Primary Language en
Subjects Engineering
Journal Section Articles
Authors

Orcid: 0000-0002-4921-3213
Author: Ibrahim ALAMERİ (Primary Author)
Institution: ATATURK UNIVERSITY
Country: Turkey


Orcid: 0000-0002-3779-6888
Author: Meral OLTULU
Institution: ATATÜRK ÜNİVERSİTESİ
Country: Turkey


Orcid: 0000-0002-8091-2792
Author: Metehan ARDAHANLI
Institution: ERZURUM TEKNİK ÜNİVERSİTESİ
Country: Turkey


Dates

Application Date : May 30, 2020
Acceptance Date : September 22, 2020
Publication Date : December 30, 2020

APA Alameri, I , Oltulu, M , Ardahanlı, M . (2020). Influence of Preheating on the Mechanical Properties of High Strength Concrete with Micro Silica Filler . Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi , 7 (2) , 1084-1093 . Retrieved from https://dergipark.org.tr/en/pub/bseufbd/issue/56632/739609