FARKLI MİNERALOJİYE SAHİP KUVARS KUMLARI VE ÖĞÜTÜLMÜŞ TÜREVLERİNİN KARŞILAŞTIRILMASI

Öğütülmüş kumlar, özellikle şişme eğiliminde olan killerin iyileştirilmesinde kullanılmaktadır. Her kum kendine özgü fiziksel özelliklere sahiptir. Bu nedenle kullanılan kumun mühendislik özelliklerinin belirlenmesi gerekmektedir. Bu çalışmada farklı mineralojiye sahip 4 kum kullanılmıştır. Bu kumların mühendislik özellikleri belirlendikten sonra, kil ve silt boyutuna kadar öğütülerek her numuneden farklı tane dağılımlarına sahip, 3’er numune elde edilmiştir. 12 kumun “Kötü derecelenmiş kum” olduğu, farklı mineralojiye sahip kumların fiziksel özelliklerinin de farklı olduğu belirlenmiştir. Türevler içinde en büyük farklılık magmatik kökene sahip Tip 1 kumunda görülmüştür. Sonuç olarak, kumların, tane boyutlarının küçülmesiyle mühendislik özellikleri değişmiştir. Ayrıca farklı mineralojiye sahip kumların öğütülmeleriyle elde edilen türevlerin farklı davranışlar sergiledikleri belirlenmiştir.

Anahtar Kelimeler:

Kuvars kumu, Öğütme, Boşluk oranı, İçsel sürtünme açısı, Kohezyon

A COMPARISON OF QUARTZ SANDS WITH DIFFERENT MINERALOGY AND THEIR GRIDING DERIVATIONS

Griding sand is specifically used to treat clays that tend to swell. Each of the sands has its unique physical properties. For that reason, it is necessary to determine the engineering properties of the sand used. In this study, four types of sand with different mineralogy were examined. After determining the engineering properties of these sands, three different specimens per sample, with different size distributions, were obtained by grinding them up to the size of clay and silt. As a result, it was determined that the twelve sand samples consisted of poorly sorted sand and the physical properties of the sands with different mineralogy were different to each other. The largest difference in derivatives was found in Type 1 sand of magmatic origin. It was observed that the original sand used in all experimental results gave higher values than the finer grained derivative samples. As a result, the engineering properties of the sands changed with the reduction in grain sizes. In addition, it was determined that the derivatives obtained by grinding the sand with different mineralogy exhibit different behaviors.

Keywords:

Quartz sand, Griding, Void ratio, Angle of internal friction, Cohesion,

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