The important items to be considered
with concrete
Quality of concrete
Concrete is sold in many different strengths from
1 Sack concrete mix for
zero shrinkage backfill
7 Sack concrete mix for
its maximum strength and durability
Vibration of concrete
Concrete needs to be solid with no air
holes or voids, vibrating and compacting of the concrete greatly improves
the quality of the final product
Compaction of fill gravel,
Gravel backfill needs a certain amount of moisture
to insure a well compacted backfill with no settling, to get these results
ground pounder compacters and vibratory
compacters need to be used.
Rebar
Concrete also gets it strength from
rebar and fiber mess, when these materials are added to concrete the
ability for the concrete to separate is reduced to nearly zero. Fiber mesh
has replaced the old fashioned wire mess that was so popular in the past
