Prediction Thermal Conductivity of The Novel Developed Light Weight Concrete with Artificial Neural Networks

Abstract

The dependence on energy is increasing in a growing population and a rapidly developing global world. Around 40% of the energy consumed is consumed in buildings. Building heating and cooling have boosted energy consumption and costs dramatically. As a consequence, in order to boost energy efficiency in buildings, it becomes inevitable to develop new construction materials with thermal insulation properties. Vermiculite, waste basalt powder, molten tragacanth, and cement-reinforced samples were produced for this purpose. Mechanical and thermal conductivity tests were performed on 48 samples produced at various rates. The findings of the experimentally measured thermal conductivity were modelled and compared with the outputs of the created artificial neural network. The Matlab software was used for modelling. The mechanical properties acquired experimentally using the Artificial Neural Networks (ANN) approach were used as an input, and the correlation of the samples with thermal conductivity was investigated. The findings obtained were consistent with one another, and the thermal conductivity values were predicted with an error ranging between 7.6701% and 0.0091%, and the ANN yielded successful results at a rate of 99%.

Keywords

• Expanded vermiculite
• waste basalt powder
• thermal conductivity
• artificial neural networks

Yeni Geliştirilmiş Hafif Betonun Yapay Sinir Ağlarıyla Isıl İletkenliğinin Tahmini

Abstract

Artan nüfus ve hızla gelişen küresel dünyada enerjiye olan bağımlılık giderek artmaktadır. Harcanan enerjinin yaklaşık %40’ı yapılarda tüketilmektedir. Yapıların ısıtılması ve soğutulması ile enerji tüketimi ve maliyeti oldukça artmıştır. Bu nedenle yapılarda enerji verimliliğini arttırmak için ısıl yalıtım özelliğine sahip yeni yapı malzemeleri üretmek kaçınılmaz olmuştur. Bu amaçla vermikülit, atık bazalt tozu, eriyik kitre ve çimento katkılı numuneler üretilmiştir. 48 adet farklı oranlarda üretilen numunelere mekanik deneyler ve ısıl iletkenlik deneyi yapılmıştır. Deneysel olarak ölçülen ısıl iletkenlik sonuçları geliştirilen yapay sinir ağı çıkışlarıyla modellenerek karşılaştırılmıştır. Modelleme için Matlab paket programı kullanılmıştır. Yapay Sinir Ağı (YSA) yaklaşımı ile deneysel olarak elde edilmiş mekanik özellikler giriş olarak kullanılmış ve numunelerin ısıl iletkenlik ile ilişkisi incelenmiştir. Bulunan sonuçların birbirleriyle uyumlu olduğu ve ısıl iletkenlik değerlerinin % 7,6701 ile % 0,0091 arasında bir hata ile tahmin edildiği ve YSA’nın % 99 oranın da başarılı sonuçlar verdiği görülmüştür.

Keywords

• Genleştirilmiş vermikülit
• atık bazalt tozu
• ısıl iletkenlik
• yapay sinir ağları

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