I. CHEMICAL COMPONENTS OF BRISTAR

BRISTAR is a powder consisting of an inorganic compound made mainly of a special kind of silicate and an organic compound. BRISTAR does not contain any harmful components.

II. SOME EFFECTS ON THE EXPANSIVE STRESS OF BRISTAR

1) The expansive stress increased more than, 6,000 t/m². (Fig. 1, 3, 4)

2) The larger the hole diameter is, the greater the expansive stress becomes. (Fig. 2)

3) There is little change in the expansive stress when the water ratio is in the neighborhood of approximately 30%. However, the stress is decreased as the water ratio is increased or decreased.

Fig. 1 Time required that expansive stress reaches 6000 t/m2 and Temperature

Fig. 2 The relation between the expansive stress and hole diameter

Fig. 3 Changes in the expansive stress of B-100

Fig. 4 Changes in the expansive stress of B-200