Influence of the Compound Composition on Its Strength in Cementation of Spent Oils

Abstract

Solidification of oil adsorbed onto a sorbent into a cement matrix at different values of the water-to-cement ratio (hereinafter, WCR) was performed. The compression strength of the compounds obtained was determined. Inverse linear relationships between the mechanical properties of oil-containing compounds and the fraction of oil in the compound were obtained with different absorbents. The optimum WCR value for the oil incorporation is 0.4. With an increase in WCR, the compound strength decreases by up to 40% depending on the kind of the sorbent. The sorbent type influences the compound strength. In particular, magnesium oxide enhances the matrix strength, whereas silicon dioxide decreases it. The limiting fraction of oil in the compound at which the strength remained satisfactory was calculated.