İnce Kumlu Mühendislik Dolgularının Fiziksel Özellikleri Üzerine Pozzolan-Kireç Stabilizasyonunun Değerlendirilmesi

Gevşemiş kumlar, mukavemet eksikliğinden dolayı depreme karşı hassastır ve doymuş kumlar bile sıvılaştırılabilir. Gevşek ince kumlardaki sorunları ele almak için, bu makalede, zemin iyileştirme için pozzolanik yöntemlerden biri olan hidratlı kireç ve zeolit, ince kumlu zeminlerin sıkıştırma özelliklerini geliştirmek için birlikte kullanılmıştır. İnce kumlu zeminlerin pratik olarak sıkıştırılmasına yardımcı olmak için, işlenmiş zeminin yüzde 3,4 ve 5 oranında kireç ve yüzde 8,10 ve 12 oranında zeolitle birlikte fiziksel özellikleri incelenmiştir. Maksimum kuru yoğunluğu ve indeks boşluk oranlarını elde etmek için bir seri Proctor testi, zeminin Özgül ağırlığı ve asgari endeksi yoğunluk yapılmıştır. Ek olarak, zeolitinhidrasyon hızı, hidrasyon işleminin etkin süresini ölçmek için modellenmiştir. Sonuçlar, zeolit uygulamasının daha iyi bir sıkıştırma özelliğine yol açtığını, ancak yalnızca kireçle muamele edilmiş topraklarda herhangi bir gelişme olmadığını göstermiştir.

EVALUATION OF POZZOLAN-LIME STABILIZATION ON PHYSICAL PROPERTIES OF FINE SANDY ENGINEERING FILLS

Loose sands are susceptible to the earthquake due to lack of strength and even saturatedsands may experience liquefaction. To address problems in loose fine sands, in this article, hydrated limeand zeolite as one of the pozzolanic methods for soil improvement are instrumented together to improvefine sandy soils’ compaction properties. To provide aid for practical compaction of fine sandy soils,physical properties of treated soils with 3, 4 and 5 percent of lime and 8, 10 and 12 percent of zeolite areinvestigated. A series of Proctor tests, Specific Gravity of soil’s solids and Minimum Index Density wasperformed to obtain maximum dry density and index void ratios. Additionally, the hydration rate ofzeolite is modeled by Arrhenius method to quantify the effective duration of hydration process. Resultsshowed that application of zeolite led to a better compaction property while treated soils only with limedid not show any improvement.

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