Concrete

A 94 pound bag of Portland cement contains:

1 cubic foot.

Portland cement is usually packaged in sacks containing:

1 cubic foot.

When all the ingredients are properly combined the approximate weight of a cubic foot of concrete is:

150-160 pounds.

What lumber material should be used to make a form for a 3 1⁄2" slab?

2x4s

Using the 1-2-3 rule, how many shovels of sand are needed to mix with 15 shovels of Portland cement?

30

John needs 28 cubic yards of concrete for a construction job and he needs to allow for 10% waste. If he has to order in whole yards, how many should he order?

31

How many cubic yards of concrete are needed to make a driveway 10' wide, 270'long, and 4" thi

33.33

Too much slump in concrete can be corrected by adding:

Aggregates

Moisture in wood or on the wood's surface will cause paint to:

Blister and Peel

What makes the smoothest finish on concrete?

Concrete finishing trowel

Most concrete used in construction is:

Delivered ready-mixed.

Rough places and specks on a painted surface are caused by:

Dust.

When a spray gun is used to paint, a "sandy or dusty" surface finish is caused by:

Holding gun too far from surface.

The purpose of floating concrete is to:

Impact concrete at the surface and make it easier to finish.

Portland cement is manufactured from:

Limestone.

A disadvantage of painting with a paint brush, rather than a spray gun, is that the:

Paint brush is slower.

How can bleeding of water on the top surface of concrete placed in tall forms be corrected?

Pour concrete more slowly and use a stiffer mix.

The fine aggregate used in concrete is:

Sand.

Less sand, gravel, and water are used in the mixture when concrete will have:

Severe use.

A disadvantage of painting with a spray gun, rather than a paint brush, is that the:

Spray gun costs more.

Cracking and scalding of paint is caused by:

The surface expanding and contracting.

In warm weather, forms should remain in place:

Two to three days.

When machine mixing concrete, the first thing put in the mixer is:

Water

Which material is the BEST reinforcement material for concrete?

Welded wire