İnce Taneli Zeminlerin Geoteknik Özelliklerinde Kalsine Edilmiş Fosfojips’in Etkisi

Yıl 2019, Cilt: 40 Sayı: 3, 768 - 775, 30.09.2019

Ahmet Şenol

https://doi.org/10.17776/csj.523979

Cited By: 1

Öz

Bu
çalışma, bir yapı malzemesi olarak ince taneli zeminlerin geoteknik
özelliklerini yükseltmek için fosfojips gibi atık maddelerin kullanımını
değerlendirmektedir. Kalsine Fosfojips (CPG) ile stabilize edilen zemin
numuneleri üzerinde, standart proctor deneyi, Kaliforniya taşıma gücü ve
serbest basınç ve optmum su muhevası deneyleri yapılmıştır. Gübre fabrikası
atığı olan  fosfojips 150 ºC gibi düşük
sıcaklıkta kalsine edilmiştir. Kalsine edilmiş fosfojips (CPG) katılan ince
taneli zeminlerin maksimum kuru yoğunluğu azalmıştır, ancak optimum su
muhtevası değerleri artmıştır. Serbest basınç mukavemetinin, California taşıma
gücü oranının, doğal ve stabilize zemin örnekleri üzerindeki etkileri
araştırılmıştır. Deney sonuçları, stabilize edilmemiş numunelere kıyasla CPG
katkılı karışımların daha yüksek dayanıklılığa sahip olduğunu göstermektedir.
Sonuç olarak, CPG katkılı karışımların, yol inşaatları ve hafriyat dolgu
uygulamaları için ince taneli zeminlerin dış etkilere karşı mukavemetinde
başarılı bir şekilde kullanılabilineceği sonucuna varılmıştır. Test sonuçları,
CPG içeren stabilize ince taneli zemin numunelerinin, doğal ince taneli zemin
numunelerine kıyasla daha yüksek CBR direnci ve serbest basınç mukavemeti
sergilediğini göstermektedir.

Anahtar Kelimeler

Zemin stabilizasyonu, atık malzemeler, fosfojips

Effects of Calcined Phosphogypsum on the Geotechnical Parameters of Fine-Grained Soils

Öz

In
this article, the using of waste materials has been studied such as
phosphogypsum in the alteration of fine-grained soils in order to upgrade the
geotechnical properties as a construction material. Standard Proctor test,
unconfined compressive strength tests and California bearing ratio were carried
out on Calcined Phosphogypsum (CPG) stabilized soil samples. It was determined
that the phosphogypsum with additives calcined at the low temperature 150 ºC.
Treatment with CPG generally reduces the maximum dry density but CPG increase
the optimum moisture content. Compressive strength, California bearing ratio
were performed to investigate effects of additive mixtures of stabilized and
natural soil specimen. The empirical results show that stabilized samples with
CPG additive mixtures have high durability as compared to unstabilized samples.
These contribution blends have also improved the dynamic behaviors of the soil
samples. As a result, we conclude that CPG additive mixtures can be completely
used as an additive material to strength of granular soils in highway
constructions and embankment applications. The experiment results understood
that the stabilized fine-grained soil specimens containing CPG show high
resistance to the CBR and unconfined compressive strengths as compared to
natural fine-grained soil samples.

Anahtar Kelimeler

Soil stabilization, waste materials, phosphogypsum

Kaynakça

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