The loss will be same as long as current magnitude is same irrespective of what the power factor (pf) of the load current is. Just to clarify consider a single phase 110 V /220 V transformer . Let its Req=eqivalent resistane be 3 ohm (referred to 220 V side). Let it be rated 2.2 kVA.
Actually in the US is the cost of sand is about $11-13/Ton.
The cost of 6% lime fines costs $70/ton, the resulting cost is $2.20 per square yard. If 6% fly ash costs $8/ton, the cost of materials for a 3% lime ($1.10 per square yard) and 6% fly ash combination would be $1.35 per square yard.