Cement is just the powder used to make mortar and concrete. Mortar has sand in it.
Gravel is added with mortar to make concrete.Another answer:Cement is mixed with just water and perhaps some fine sand to make mortar. Gravel or rocks, strengthening agents in load bearing concrete, can interfere with mortar in that mortar needs to work something like an adhesive.
to make mortar
The mortar and pestle is a instrument use in laboratory, it is use to crushed and to make it small.
to make it weaker
With mortar and brick
I built a brick and mortar business from the ground-up. I used a pestle and mortar to crush herbs and make a special elixir. I used my mortar to blow up my enemies.
Mortar is made from sand, a cement such as Portland Cement or Lime, and water.
You use pestle and mortar on your item.
conecement and plasterfibreglassplasticgunnitepacket mortar