POMZA AGREGALI BETONLARIN ELASTİSİTE MODÜLLERİNİN TAHMİNİNDE BAZI AMPİRİK VE KOMPOZİT MODELLERİN PERFORMANSLARININ İNCELENMESİ

Son zamanlarda, farklı betonların elastisite modüllerinin tahmin edildiği çalışmaların sayısı sürekli artmıştır. Bu çalışmada, pomza agregası içeren betonlarla ilgili bir referans makale literatürden seçilmiştir. Bu referans çalışmada yer alan beton serilerinin karışım oranları, basınç dayanımları ve birim hacim ağırlığı özellikleri yardımıyla mevcut 10 adet ampirik ve 10 adet kompozit model ile elastisite modülleri tahmini yapılmıştır. Tahmin edilen değerler referans çalışmadan elde edilen serilerin deneysel elastisite modülleri ile karşılaştırılarak söz konusu ampirik ve kompozit modellerin pomza agregalı betonların elastisite modüllerinin tahminindeki performansları değerlendirilmiştir. Pomza agregalı betonların elastisite modüllerinin tahminine en uygun model belirlenmeye çalışılmıştır. Deneysel elastisite modülleri ile tahmin edilen elastisite modülleri arasındaki hata oranları tartışılmış ve pomza agregalı betonların elastisite modülleri ile ilgili genel değerlendirmeler yapılmıştır.

INVESTIGATION OF SOME EMPIRICAL AND COMPOSITE MODELS FOR THE PREDICTION OF ELASTIC MODULI OF PUMICE AGGREGATE CONCRETES

Recently, the number of studies in which the elastic modulus of different concrete is estimated has continuously increased. In this study, a reference article dealing with concrete containing pumice aggregate was chosen from the literature. The elastic moduli of the pumice concretes given in the reference article were predicted by using 10 empirical and 10 composite models with the aid of mixture proportions, compressive strengths and unit weights of those pumice concrete series. The performances of mentioned empirical and composite models for predicting the elastic moduli of pumice aggregate concretes were evaluated by comparing the predicted elastic moduli with the experimental elastic moduli reported in the reference paper. It was tried to determine the most appropriate model for the prediction of elastic moduli of pumice aggregate concretes. The error percentages between predicted elastic moduli and the experimental elastic moduli were discussed, and a general evaluation about the moduli of elasticity of pumice aggregate concrete was reported.

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