Separating agent for concrete contg a dispersion of paraffin - oxide and polyethylene oxide

摘要

The separator contains 10-20 pts. by wt. of molten oxidised paraffin of m.p. 50-60 degrees C and acid no. 50-100, 0.15-0.6 pts. by wt. of ammonia, 0-25 pts. by wt. of polyethylene oxide of mol. wt. 4,000 and m.p. 50-55 degrees C as antigel and 54.4-89.85 pts. of water. Use of paraffin oxide prevents surface penetration and allows formation of a thin film. It is used in manufacture of lift-slabs.