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Folk, R.L. (1974) The Natural History of Crystalline Calcium Carbonate: Effect of Magnesium Content and Salinity. Journal of Sedimentary Petrology, 44, 40-53.

has been cited by the following article:

  • TITLE: Geotechnical Study of the Aptian Limestone of the Kef Region, Northwestern Tunisia: Evaluation for Industrial Use

    AUTHORS: Imed Ben Salah, Moufida Ben M’Barek Jemaï, Safa Mezza, Mabrouk Boughdiri

    KEYWORDS: Aptian Limestone, Geotechnical Properties, Geochemical Properties, Industrial Use

    JOURNAL NAME: Open Journal of Geology, Vol.8 No.12, November 9, 2018

    ABSTRACT: This study aims to the initial characterization of Aptian sedimentary limestones in the Kef region located in the North-West of Tunisia in order to use in industrial fields. The limestone samples were collected from three outcrops respectively named Jebel Jerissa, Jebel Hmeima and Jebel Harraba. A geochemical characterization highlights a variation of the weight percentage (wt%) as follows: CaO (53 - 55), MgO (0.04 - 0.28), Al2O3 (0.07 - 0.51), Fe2O3 (0.41 - 2.87), and a loss on ignition (41.62 - 43.35). The other oxides (K2O, SO3, Na2O) are in trace amounts. Mineralogical analysis revealed that limestones contain more than 95% of calcite and the clay impurities are the minor phases detected. Petrographic study showed that these limestones are packestone-wakestone type. The hardness of Aptian limestones crosses the upper limit of the hard domain. Geotechnical tests reveal a Dry Micro Deval (MDS) coefficient varying from 23% to 33%, a Wet Micro Deval (MDH) coefficient with values oscillating around 26% to 36%, a Los Angeles coefficient (LA) about 25% against a value of the compressive strength ranging from 593 Kg/cm2 to 866 Kg/cm2. The gravimetric tests highlighted a flexural strength value from 106 Kg/cm2 at 208 Kg/cm2, while the ultrasonic coefficient oscillates from 4876 m/s to 5233 m/s, indicating the low porosity of these limestone (0.5% to 1%). The density recorded an average value of 2.50 g/cm3. The various properties studied have proved that the limestone studied can be used in various industrial fields such steel industry, aggregate, cement industry and marble.