Mafia Not Happy !!

Floating Concrete?

Is Someone Swimming with Da Fishes??

Sir your Concrete Canoe

Floats Full of Water??

No Way How Can Italians DO Such A Thing?

No one ever believes

these float full of water!!

I know!!

There is a Student Competition that Requires This

The American Society of Civil Engineers: National Concrete Canoe Competition

Over 300 Universities Compete in 20 regions

A National Champion is Crowned Each Year

National Concrete Canoe Champions during 22 year history

U C Berkeley

Michigan State

Alabama Huntsville

South Dakota School of Mines

Clemson University

Wisconsin

The Florida Institute of Technology

Enough with the Fluff

Concrete or CementCement is the Glue

Is Type 1 for you??

Or Maybe Types 2 3, 4 or 5?

Concrete contains Rocks (Aggregates of various sizes)Now Your Talkin’ that’s how we maka da shoes

http://www.nextag.com/concrete-shoes/search-html

Mixing For your Shoes

A One and a Two and a Three

One shovel of Cement

Two a Shovel of da Sand

Three a Shovel of the Gravel

And just the right amount of Water

Would this be a Volume Based Mix or a Weight Based Mix?

Remember the saying “The whole 9 yards!!”

Mixing for Our CanoesCement Plus Other binders

Fly Ash from the coal power plantsSlag from the steel making process

Light Weight Aggregates Sand Size Like Making Popcorn!!Cook Regular Rocks at over 2000 oF and they PopLivelightPerlite used in potting soil

And the right amount of waterPlus special Chemical Admixtures

That make it easier to work withSlow the chemical reaction and increase strength

And you get CONCRETE not cement or as they say here in the South “Sea”ment!!

The Bottom Line is we have fun

Testing Concrete

Compression

Tension

Bending

Construction Specifications

Ultimate Compressive StrengthUnits

Force divided by area

Pounds per square inchpsi

Kilonewtons per square meterkN/m2 or kilopascals kPaWhat area is used?

Typical Concrete Strengths

Sidewalk = 3000 psi = 21,000 kPa

Interstate Highway = 5000 psi = 35,000 kPa

High-rise Buildings = 10,000 psi = 70,000 kPa

Notes:Concrete Densities Average 150 pcf = 23.5 kN/m3

Water is 62.4 pcf or 1 Mg/m3

Saltwater is 64.2 pcf or 1.03 Mg/m3

Today’s Ready Mix Trucks Carry 10 cubic yards