From Civil Engineering Portal, "Gravel, stone and sand are used as filler materials which reduce the usage of cement in concrete and also cheaper." (
www.engineeringcivil.com/filler-materials-used-in-concrete.... ) Likewise, see
https://www.toutsurlebeton.fr/le-ba-ba-du-beton/quels-sont-l... which lists aggregates as filler, sand and gravel.
So, both aggregates and filler covers all the 'charges' terms. Also, according to
http://matse1.matse.illinois.edu/concrete/prin.html "Concrete is a composite material which is made up of a filler and a binder. The binder (cement paste) "glues" the filler together to form a synthetic conglomerate. The constituents used for the binder are cement and water, while the filler can be fine or coarse aggregate...Aggregates are chemically inert, solid bodies held together by the cement. Aggregates come in various shapes, sizes, and materials ranging from fine particles of sand to large, coarse rocks."