Yüksek Dayanımlı Betonların Basınç Dayanımının Olgunluk Yöntemi Tabanlı Tahmin Eden Sayısal Modellerin Geliştirilmesi

Yıl 2025, Cilt: 37 Sayı: 1, 49 - 60

Tuba Demir , Kürşat Esat Alyamaç

https://doi.org/10.35234/fumbd.1464418

Öz

Bu çalışmanın amacı, Nurse-Saul ve Arrhenius (NS-Arr) olgunluk fonksiyonlarını kullanarak yüksek dayanımlı beton (YDB)'lerin basınç dayanımını tahmin etmek için sayısal modeller geliştirmektir. Bu amaçla, 400-450-500 kg/m3 dozajlı farklı beton karışım oranlarına sahip 9 beton serisi üretilmiştir. Çimento yerine hacimce %5-10-15 oranında silis dumanı ve ince agrega yerine hacimce %8-10-12 oranında mermer tozu kullanılmıştır. Numuneler standart kürde bekletilirken, olgunluk testinde kullanılmak üzere 1., 3., 7., 14. ve 28. günlerin sonunda her 5 dakikada bir sıcaklık değerleri ölçülmüş ve sonuçlar bilgisayara aktarılmıştır. Basınç dayanımı testi de aynı zaman dilimlerinde gerçekleştirilmiştir. Test sonuçlarından elde edilen veriler analiz edilmiş ve uygulanan her olgunluk fonksiyonu için ayrı bir sayısal model geliştirilmiştir. Ayrıca bu modellerin kullanımı ile beton basınç dayanımının kısa sürede yüksek doğrulukla tahmin edileceği, proje-iş planının zaman kaybı olmadan yürütüleceği ve çevresel sürdürülebilirliğe katkı sağlanacağı düşünülmektedir.

Anahtar Kelimeler

Yüksek dayanımlı beton, basınç dayanımı, olgunluk, silis dumanı, mermer tozu.

Development of Numerical Models to Predict the Compressive Strength of High Strength Concretes Based on Maturity Method

Öz

The aim of this study was to develop numerical models to predict the compressive strength of HSCs using Nurse-Saul and Arrhenius (NS-Arr) maturity functions. For this purpose, 9 concrete series with different concrete mix ratios of 400-450-500 kg/m3 binder dosage were produced. Silica fume was used instead of cement at the rate of 5-10-15% by volume and marble powder was used instead of fine aggregate at the rate of 8-10-12% by volume. While the specimens were kept in standard water curing, the temperature values were measured every 5 minutes at the end of the 1st, 3rd, 7th, 14th and 28th days to be used in the maturity test and the results were transferred to the computer. The compressive strength test was also performed in the same time periods. The data obtained from the test results were analyzed and a separate numerical model was developed for each maturity function applied. In addition, with the use of these models, it is thought that concrete compressive strength will be predicted with high accuracy in a short time, the project-work plan will be carried out without loss of time and environmental sustainability will be contributed.

Anahtar Kelimeler

High strength concrete, compressive strength, maturity, silica fume, marble powder

Kaynakça

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