The Mineral Characteristic of Tropical Residual Soil using X-Ray Diffraction (XRD) and Scan Electron Microscopy (SEM)

Rinda Karlinasari*  -  Universitas Islam Sultan Agung, Indonesia
Paulus P. Rahardjo  -  Universitas Katolik Parahyangan, Indonesia
Azis Dajaputra  -  Universitas Katolik Parahyangan, Indonesia

(*) Corresponding Author
Volcanic residual soil has unique characteristics due to weather and morphological influences. High temperatures and large amounts of rainfall made the rock weathering intense. Landslide events in volcanic residual soil of West Java are quite serious, more than 100 incidents in total a year. Landslides that occur due to unsaturated conditions on the top of the slope become saturated, so it is very important to conduct research on these tropical residual soil weathering zones to define its mineral characterization using Scan Electron Microscopy (SEM) and X-Ray Diffraction (XRD). From the research it was found that the dominant mineral types and contents were Halloysite and Kaolinite minerals. A typical mineral profile is found that is Goethite and Hematite minerals at the soil surface, Carbonate and Chlorite minerals in deeper soils and large amounts of Feldspar minerals in more deep layers. Because there are unique minerals at each depth of soil weathering, zone classification can be done easily starting from the Initial Leaching Zone at the deepest part where there is Feldspar, the Mineral Washing Zone there is Carbonate and Chlorite and the Oxidation Zone on the surface (there are Oxide and Hydroxide minerals). So that it can form a Residual Tropical Volcanic Weathering Profile.

Keywords: Initial Leaching Zone; Mineral Washing Zone; Oxidation Zone

  1. ] Fonseca, A.V, Coutinho, R.Q. (2008). Characterization of residual soils, Geotechnical and Geophysical Site Characterization – Huang & Mayne (eds), Taylor & Francis Group, London, ISBN 978-0-415-46936-4.
  2. ] Pusat Penelitian dan Pengembangan Geologi. (2003). Peta Geologi Lembar (Quadrangle): Cianjur
  3. ] Wesley, L.D. (1973). Some Basic Engineering Properties of Halloysite and Allophane Clays in Java Indonesia. Geotechnique 23, No.4, 471-494, 1973.
  4. ] Tuncer, E.R., Lohnes, R.A. (1977). An Engineering Classification for Certain Basalt-derived lateritic soils. Engineering Geology, Volume 11, Issue 4, 319-339.
  5. ] ASTM D 4452-85 (2002). “X-Ray Radiography of Soil Samples†2003. Annual Books of ASTM Standards, Vol 04-08. Section 4, West Conshohocken, P.A. pp. 686-699

JACEE (Journal of Advanced Civil and Environmental Engineering)
is published by Fakultas Teknik Universitas Islam Sultan Agung, Indonesia, in collaboration with Fédération Internationale du Béton (fib).
Jl. Raya Kaligawe Km.4, PO BOX 1054/SM Semarang 50112

ISSN: 2599-3356 (Online)
DOI : 10.30659/jacee

This work is licensed under a Creative Commons Attribution 4.0 International License

Get a feed by atom here, RRS2 here and OAI Links here