Silica stone powder

Ordinary portland cement as specified in JIS R 5210 (Portland Cement), silica stone powder, scrap FRP powder and scrap glass powder were used, their properties are shown in Table 1 to Table 4, respectively. Particle size distribution curve for scrap FRP and glass powder are illustrated in Fig. 1. 

According to JIS R 5201 (Physical testing method for cement), cement pastes were prepared with the mix proportions in Table 5 (series 1) and Table 6 (series 2). Cement ratios to cement plus silica stone powder (cement content) were 30,40 and 50%, and water/cement ratios were constant at 50%. The scrap FRP powder was used as a filler, and the percentages of addition were 5, 10 and 15% in this study. 

No Ordinary portland cement Silica stone powder Scrap FRP powde Water... 

PHYSICAL PROPERTIES finely divided gray powder containing less than 1% crystalline silica odorless insoluble in water mixture with water, sand, and stones is fluid or plastic-like MP (NA) BP (NA) SG (much greater than 1) VD (NA) VP (0 mmHg at 20°C). 

Silica si-li-k3 [NL, ff. L silic-, silex hard stone, flint] (ca. 1801) (silicon dioxide) n. Si02. A substance occurring widely in minerals such as quartz, sand, flint, chalcedony, opal, agate, and many more. In powdered form it is used as a filler, especially in phenolic compounds for ablative nose cones of rockets. Synthetic silicas, made from sodium silicate or by heating sihcon compounds, are useful in preventing plate-out. 

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