Figure-1 shows the slump values of 13 different concrete mixes used in this experimental
investigation; for control mix it was obtained as 20 mm. When used engine oil was added
to 100% OPC concrete, the slump value increased to 35 mm. Similarly the slump of new
oil with 100% OPC concrete was obtained as 59 mm. SIKA superplasticiser which is
commercially produced to increase the fluidity of concrete, increased the slump value of
100% OPC concrete to 49 mm.