Masonry before the 20 th century was done using lime concrete due to elasticity of the lime mortar which allowed expansion or contraction of the walls without damaging masonry units.
Lime concrete flooring.
The base concrete used under floors may be cement concrete or lime concrete laid to a thickness varying from 75 to 10 cm.
10 stone or over burnt brick aggregates 40 mm.
Since long lime has been used to make things like plaster and mortar.
It was widely used before the lime was replaced by portland cement.
Concrete is normally cement mixed with sand gravel aggregate.
As for using bottles broken or otherwise in your floor probably not a good idea and it would do nothing for insulating properties.
To make matters worse when this.
Lime stains occur on concrete floors when the concrete is repeatedly exposed to water.
Lime concrete mixed with an insulating material like lightweight clay or pumice is used for flooring purpose.
Plain concrete slabs have served as the flooring material for basements garages patios and utility areas for many years but concrete is now also a viable material in home interiors where it can be polished etched or stained to serve as the finished flooring surface if you are used to thinking of concrete as a utilitarian surface suitable only for utilitarian surfaces the many virtues.
This would decouple the floor from the earth.
Lime as the first cement.
A concrete made from a mixture of lime sand and gravel is said to be as lime concrete.
In case of cement concrete the mix commonly used is 1 5 10 1 cement.
And not good for your feet maybe use rigid insulation board under the lime floor.