Scholarlink

<p>This study investigates the physico-chemical, mineralogical, and technological properties of clayey materials collected from eight localities in the Far North Region of Cameroon, traditionally used for construction and pottery. The objective is to assess their suitability for ceramic applications. Eight representative samples were characterized using X-ray diffraction (XRD), infrared spectroscopy (IR), X-ray fluorescence (XRF), thermogravimetric and differential thermal analyses (TGA/DTA), as well as ceramic firing tests conducted at 900&#xa0;°C, 1000&#xa0;°C, and 1100&#xa0;°C. Mineralogical results indicate that the clays are mainly composed of quartz, smectite, kaolinite, and illite, with secondary amounts of K-feldspar, plagioclase, and amphibole. Geochemical analyses show that SiO₂ (43.32–74.87%), Al₂O₃ (7.91–17.67%), and Fe₂O₃ (2.65–12.22%) are the dominant oxides. Granulometric data reveal variable proportions of clay (16.82–40.81%), silt (8.08–31.84%), and sand (30.00–74.03%), which strongly influence plasticity and shaping behavior. The materials exhibit moderate plasticity (7.15–22.74%) and generally satisfactory molding and extrusion properties. After firing, water absorption ranges from 12.26 to 18.55%, flexural strength from 0.12 to 20.43&#xa0;MPa, linear shrinkage from 1.26 to 38.79%, and compressive strength from 12.20 to 28.26&#xa0;MPa, with orange-colored products. Overall, the results demonstrate that most of the studied clays are suitable for manufacturing various ceramic products, including bricks and tiles, at the investigated temperatures, although samples DJ27 and BE31 show limitations at 1100&#xa0;°C unless improved by appropriate additives.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Physico-chemical, mineralogical characterization and ceramics potential assessment of alluvial clays from Northern Mindif (Cameroon)

  • 期刊论文

  • 发表日期：

    2026年2月26日

查看全文
  • Iyammi Bintou Moctar,
  • Tchedele Langollo Yannick,
  • Jacques Richard Mache,
  • Tchamba Arlin Bruno,
  • David Houivet,
  • Nchare Mominou

摘要

This study investigates the physico-chemical, mineralogical, and technological properties of clayey materials collected from eight localities in the Far North Region of Cameroon, traditionally used for construction and pottery. The objective is to assess their suitability for ceramic applications. Eight representative samples were characterized using X-ray diffraction (XRD), infrared spectroscopy (IR), X-ray fluorescence (XRF), thermogravimetric and differential thermal analyses (TGA/DTA), as well as ceramic firing tests conducted at 900 °C, 1000 °C, and 1100 °C. Mineralogical results indicate that the clays are mainly composed of quartz, smectite, kaolinite, and illite, with secondary amounts of K-feldspar, plagioclase, and amphibole. Geochemical analyses show that SiO₂ (43.32–74.87%), Al₂O₃ (7.91–17.67%), and Fe₂O₃ (2.65–12.22%) are the dominant oxides. Granulometric data reveal variable proportions of clay (16.82–40.81%), silt (8.08–31.84%), and sand (30.00–74.03%), which strongly influence plasticity and shaping behavior. The materials exhibit moderate plasticity (7.15–22.74%) and generally satisfactory molding and extrusion properties. After firing, water absorption ranges from 12.26 to 18.55%, flexural strength from 0.12 to 20.43 MPa, linear shrinkage from 1.26 to 38.79%, and compressive strength from 12.20 to 28.26 MPa, with orange-colored products. Overall, the results demonstrate that most of the studied clays are suitable for manufacturing various ceramic products, including bricks and tiles, at the investigated temperatures, although samples DJ27 and BE31 show limitations at 1100 °C unless improved by appropriate additives.