Concrete mixt. for building applications - contains waste prod. obtd. in the prodn. of titanium-magnesium and reduces the proportion of cement required

摘要

The mixt. contains by wt. 10-15% cement; 82-89.5% aggregate; and 0.5-3.0% w.r.t. the dry wt. of the mixt., of an addn. (I). The addn. (I) is an aq. soln. of a waste prod obtd. in mfg. titanium-magnesion via a metallurgical process using chlorine; and the aq. soln. has a density of 1.02-1.16 g/cm3. The waste prod. (I) is a fine powder, size 10-100 mu m, which contains TiCl4, CrCl3, AlCl3, NbCl5, SiCl4, VCl5, TaCl5, FeCl2, FeCl3, CaCl2, ZrCl4, MnCl2, WCl3, and is readily soluble in water to form soln. (I). This addn. results in concrete which is inexpensive, and has excellent properties w.r.t. life, strength, frost-resistance, non-permeability to water, and corrosion resistance. The addn. (I) is also a good binder so less cement is required in the concrete.