Factor not affecting soil compacted density is 

Explanation:

Factors affecting compacted density of soil:

• Water content: 
  • ​To achieve the desired density of the soil, the moisture content of that soil has to be controlled properly.
  • If the water content is low, it leads to soil being stiff which will resist compaction.
  • When the water content is increased, lubrication takes place between the soil particles and the soil becomes more workable.
  • Dry density of the soil increases with an increase in the water content till the optimum water content is reached. Adding more water at this stage, will reduce the dry density.

  • The amount of water content added to the soil till it reaches its maximum dry density is called the moisture content of the soil.

• Type of soil: 
  • The soil type influences the compaction of that soil to a great extent.
  • The coarse grained soils can be compacted to higher dry density than the fine grained soils.

  • The maximum dry density decreases if the quantity of fines is increased to an amount more than that required to fill voids in the coarse grained soils. Hence it’s safe to say a well graded soil obtains a much higher dry density than a poorly graded soil.

• Amount and type of compaction:
  • ​The optimum water content required for compaction decreases with an increase in the compaction effort and dry density increases with an increase in the compaction effort.

  • This effect of increase in compaction is significant only until the water content reaches its optimum level. After that level, the volume of air voids becomes almost constant and the effect of increased compaction is not significant.

• Addition of admixtures:
  • ​The addition of the chemical admixture, cement and lime, can improve the engineering properties of soils.
  • The soil liquid limit decreases with an increase in the cement and lime content.
  • The soil maximum dry density increases while the optimum water content decreases with an increase in the cement and lime content.