| Autor: |
Wongkamjan, Watcharagon, Jumepaeng, Thanawat |
| Předmět: |
|
| Zdroj: |
International Journal of GEOMATE; 2020, Vol. 19 Issue 75, p35-41, 7p |
| Abstrakt: |
This study aimed to investigate properties and applications of Lao Kham Variscite, LKV, variscite at Lao Kham village Roi Et province Thailand. The sample properties were investigated using microscopic characteristics analysis with digital stereomicroscope, Petrographic analysis with thin-section analysis, chemical compositions, and mineral analysis. The applications of LKV in chemical cement were also investigated using setting time and compressive strength. The results indicated that the randomly selected sample was itself a composite with several crystalline in microstructure characterization most of all were silica oxide (SiO2) and some part of Variscite (Al(PO4)(H2O)2) clearly the sample needed to be screened for more composition of Variscite before continuing the experiment. It was also found that calcination affected the mineral state of LKV, all samples that had calcined were not found in Variscite, but the mineral composition changed to Aluminum Phosphate (AlPO4) and non-calcined sample (LKVNOR) found no formation when mixed with 3M NaOH solution while LKV600 had the fastest setting time and compressive strength compared with the reference cement. In the summary LKV 600 was the most reactive and has the potential to be developed for use as Chemically Bonded Phosphate Cement (CBPC). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
