Glass powder, scrap

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. 

Fig. 1 Particle size distribution curve for scrap FRP and glass powder Table 1. Properties of ordinary portland cement...

No Ordinary portland cement Silica stone powder Scrap glass powder Water... 

Fig. 6 shows the relationship between percentage of scrap glass powder addition and bulk specific gravity. There exists more obvious quantitative relation between them than that of scrap FRP powder. 

The conclusion obtained from the test results on the properties of autoclaved cement paste containing scrap FRP or glass powder are summarized as follows. 

Fig. 5 The effect of addition of scrap glass powder on strengths...

Fig. 6 The relationship between scrap glass powder addition and bulk specific gravity...

To prevent Bumping. — In vacuum distillations a troublesome bumping (a sudden, violent ebullition) frequently occurs- To prevent this a slow, continuous current of air is drawn through the liquid, thus keeping it in constant motion. The air current, controlled by a pinch-cock, must not be allowed to enter too rapidly, otherwise. it will be difficult to maintain a high vacuum. The same effect may be obtained by placing certain substances in the liquid — splinters of wood the size of a match, capillary tubes, bits of glass, pieces of porcelain, powdered talc, scraps of platinum wire or foil. Small pieces of pumice-stone bound with platinum... 

From these view points, we review recent literature on recycling of rare earths from various rare-earth scrap materials, such as permanent magnets, phosphors, secondary nickel metal hydride batteries, polishing powders, optical glass, and catalysts. The review is concerned initially with each recyclable product and then on each method used in recycling. 

Glass bottle for samples of uranium oxide powders and scrap (IAEA 2004)... 

We have seen previously that if materials are finely dispersed in another polymer matrix, they do not cause great mechanical weakening. Powdered thermoset scrap can find use as a material held by adhesive resins, as filler in thermoplastics or as part of a new rmcured thermoset matrix. The glass reinforcement can generally be recovered for re-use. 

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