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A series of laboratory test to obtain the effect of 60 % and 65 % solid percentage with various cement percentage of 2,25%, 2,5%, 2,75% and 3% and tested at 4, 7, 10, and 14 curing days on the strengh of materials was carried out. The results of test were compared with the heaviest equipment pressur...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/20326 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | A series of laboratory test to obtain the effect of 60 % and 65 % solid percentage with various cement percentage of 2,25%, 2,5%, 2,75% and 3% and tested at 4, 7, 10, and 14 curing days on the strengh of materials was carried out. The results of test were compared with the heaviest equipment pressure at Pongkor Gold Mine, which is Load Haul Dump (LHD) Toro 301 that give 1,616 Kg/cm2 pressure.<p> <br />
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It is recommended that the most suitable cement composition to be used in the mine is 60% solid slurry with 2,75% cement, that give 1,63519 kg/cm2 compressive strength. This value is higher than that given by heaviest equipment that used in mine area. In addition for 65% of solid slurry composition, the support capability was 1,616 kg/cm2 that is higher than the average value.<p> <br />
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From the x-ray diffraction test it was revealed that five main compounds occur in the samples as follows : Sanidine, high, sin (KAlSi3O8), Calcyte, syn (CaCO3), Alpha Quartz (SiO2), Calcium Oxide (CaO), Clinochlore (Mg-Fe-Fe-Al-Si-O-OH). Microstructure analysis using electron microscope with energy dispersive x-ray analisis attached on it, found that the main microstructure types were compact, flat, and needle forms. Sulphur bearing compund was found indicated the contribution of the additive |
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