Analysis and Testing of Muddy Soil from the Sediment Pond of The Mae Moh Mine for Portland Pozzolan Cement Production

DOI: 10.14416/


  • Sucheewan Inthung Faculty of Science and Technology, Chiang Mai Rajabhat University
  • Pirat Jaroonpattanapong Department of Mining Engineering, Faculty of Engineering, Chiang Mai University
  • Anucha Wannagon National Metal and Materials Technology Center, National Science and Technology Development Agency


Clayed soil, Portland pozzolan cement, compressive strength


The clayed soil from the sediment-trapping sump of the Mae Moh mine was examined to produce Portland pozzolan cement. The X-ray diffusion (XRD) analysis showed that the clayed soil consisted of kaolinite. After heat-treated at temperatures in the range of 700-900 oC for 3 h, the clayed soil samples were mixed with ordinary Portland cement at the ratio of 0, 10 and 20 wt.%, and then cured in lime water for 3, 7 and 28 days, respectively. XRD results of the cement samples from the process revealed pozzolanic phases as Tobermorite (Ca5(Si6O16)(OH)2.4H2O) and Foshagite (Ca4(Si3O9)(OH)2) or CSH structure. Consequently, the 100 and 700-900 oC of heat-treated clayed soils were mixed with ordinary Portland cement and sand to form the mortar in the proportions of 0, 10 and 20 wt.% according to the mortar forming standard. The mortar sample was formed in a brass mold of size 5 x 5 x 5 cm., then cured in lime water for 3, 7 and 28 days respectively. The properties of the samples were tested according to the TIS 849 standard. The results showed that the samples with 10 wt.% of 700 - 900 oC heat-treated clayed soils achieved compressive strength according to standard. The samples with 10 wt.% of 800 oC heat-treated clayed soil after being cured for 28 days have maximum compressive strength. This study shows the potential of clayed soil from the sediment-trapping sump of the Mae Moh mine for use in Portland pozzolan cement production.


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บทความวิจัย (Research article)