On 9/12/2020 1:01 PM, Ralph Mowery wrote:
In article , "frank says...

You need reinforcement for concrete that might come under tension as
tensile strength of concrete is only about one eighth that of
compressive strength. Number he is quoted must be compressive strength.
Apparently there are some advantages of fiber over rebar. I would tend
to take the advice of the concrete man.



I live in an area where most of the concrete men are just local
rednecks. They are very good at digging out footers and pouring the
concrete, but do not have the engineering education . It will look like
an execellent job, but I am just not sure about how long it will last or
hold up. The more I read, the less I understand about the
concrete..Just like many things, too many opinions by too many that
claim to be experts.

My back gound is electronic engineering,so tend to look at most thing
as an engineer would. What looks good and like it would work sometimes
is the wrong way to go.


I'm a retired chemist and did a lot of work with composites but am not
familiar with cement except as a home owner. The cement guy may not
know that much but did talk about compressive strength which I would
think few would know about. Irregardless, I think most agree that you
are better with reinforced concrete.