Effects of Specific Gravity, Fine Content and Consistency Limits of Kaolin-Sand Mixtures on the Compaction Behavior

Gençdal H. B., Başbuğ B., Seçkin E., Yücel M., Akbay Arama Z.

14th INTERNATIONAL CONGRESS ON ADVANCES IN CIVIL ENGINEERING, İstanbul, Türkiye, 6 - 08 Eylül 2021, ss.1-10, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1-10
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

Kaolin is a special type of clayey soil that contains a high amount of feldspar minerals and consists of silica and aluminum layers. The small distance between the layers of the kaolin plates ensures that the kaolin does not swell too much in contact with water. Since the swelling capacity is not very high, the hydraulic properties of kaolin have needed to be improved by mixing with different materials. As a separate but related case, the usage of kaolin with sandy soils as forming a mixture leads to differentiate the behavioral characteristics of the new texture depending on the individual characteristics of the materials. In this context, this paper investigates the effects of specific gravity, fine content ratio, consistency limits on the compaction behavior of kaolin-sand mixtures which are prepared with different weight proportions. For this purpose, 20 different literature studies which are focused on the experimental attainment process of geotechnical properties of kaolin-sand mixtures are collected. A data set has been prepared with the use of approximately 250 tests depending on the sieve analysis, consistency tests, specific gravity tests, compaction tests. Envisaged prediction analyses have been conducted by the use of Matlab R2018a software and in this respect, be benefited from the "Neural Net Fitting" application, which performs analysis of ANNs as similar to the regression principle. The mentioned training process has included the evaluation of the differentiation of the maximum dry unit weight and the optimal water content values of kaolin-sand mixtures in terms of the individual and dual usage of the parameters such as the specific gravity of fine content of consistency limits. As a result, mathematical expressions have been obtained to exhibit the relationships between specific gravity, fine content, consistency limits, and compaction parameters of kaolin-sand mixtures.