Water-Retention Properties of Pavement Ceramics Prepared From Mixtures of Waste Diatomite and Light Emitting Diode Quartz Sand

This study investigated and analyzed the effects of the heating temperature (1,000°C-1,200°C), sintering time (6 hours), and content by weight (0-20%) of diatomite waste blended with a percentage of light emitting diode quartz sand (LEDQS) waste on fabricating water-retention pavement ceramics (WRPC). The results indicated that decreasing the heating temperature and amounts of the LEDQS resulted in an increase in the porosity. Increasing the heating temperature and amounts of the LEDQS waste resulted in the WRPC samples having increased compressive strengths (3.37-20.02 MPa). When amounts of up to 20% LEDQS were added to the WRPC samples heated to 1,200°C, the driving force was higher, and the crystal growth rate increased. Therefore, it is to be expected that densification will increase with increasing temperatures. It was found that the t 1/2 values of the WRPC samples increased when the percentage of added LEDQS was increased. In summary, the WRPC samples containing LEDQS have excellent mechanical properties, making them feasible for use in WRPC applications.