Some geotechnical properties of pure and waste gypsum for geoelectrical grounding applications

• Autorzy: Mohd Tadza Mohd Yuhyi , Mazelan Nurmazuria , Yusri Nur Farahana , Abdullah Amizatulhani

Identyfikatory

DOI

10.2478/ceer-2019-0027

• Języki publikacji: EN

Abstrakty

EN

Natural occurring gypsum is a soft mineral consists of hydrated calcium sulphate, mainly used in cement industry. On the other hand, red gypsum (RG) is a waste generated from a sulphate process of ilmenite ore to acquire titanium dioxide. Due to the gypsum content in both materials are similar, it is expected that both gypsum type can be used for similar engineering applications. In this study, RG was tested and compared to pure gypsum for geoelectrical grounding applications. The geotechnical properties and plasticity characteristics were carefully measured and tested. In addition, X-ray fluorescence (XRF) was employed to study the chemical constituents of the materials. Test results showed that, the geotechnical properties of RG is different to that of white gypsum. The plasticity index (PI) of RG was 239.6% greater due to the presence of Fe ions. Surprisingly, the electrical resistivity of both material were found to be similar. It was also noted that, although the plasticity of pure gypsum is high, the plasticity of pure gypsum was found to be short lived primarily due to instantaneous exothermic reaction between water and semihydrated gypsum. The change in the plasticity also affected the resistivity as gypsum hardened after short duration. Based on the geotechnical and plasticity characteristics determined, RG was found to be a better as grounding material as compared to gypsum.

Słowa kluczowe

EN

gypsum; waste gypsum; geotechnical properties; geoelectrical grounding applications; plasticity

PL

gips; gips odpadowy; właściwości geotechniczne; uziemienie; plastyczność

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: Civil and Environmental Engineering Reports
• Rocznik: 2019
• Tom: Vol. 29, no. 3
• Strony: 97--106
• Opis fizyczny: Bibliogr. 28 poz., tab., wykr.

Twórcy

autor

Mohd Tadza Mohd Yuhyi

• Universiti Malaysia Pahang, Faculty of Civil Engineering and Earth Reources, Gambang, Kuantan (Pahang)

autor

Mazelan Nurmazuria

• Universiti Malaysia Pahang, Faculty of Civil Engineering and Earth Reources, Gambang, Kuantan (Pahang)

autor

Yusri Nur Farahana

• Universiti Malaysia Pahang, Faculty of Civil Engineering and Earth Reources, Gambang, Kuantan (Pahang)

autor

Abdullah Amizatulhani

• Universiti Malaysia Pahang, Faculty of Civil Engineering and Earth Reources, Gambang, Kuantan (Pahang)

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)