CIM 310 Test 1

Basis of strength in concrete

W/C ratio

Admixtures for concrete are

Chemical and Mineral

Concrete achieves ___% of untilate compressive strength in 7 days

65-75

what percentage does the paste represent in the concrete mixture

20-40

A mixture in a freshly harded state, delivered to the site is

Ready Mix Concrete

High Profile Bacthes have components:

above ground level

Whats is the difference between wet-batch plants and dry-batch plants

The Mixer

Liquid advixture dosage is in:

floz/yd3

minimum concrete temprature of concrete mixtures in cold weather is:

50F

Batch plant mixers can be grouped in:

Tilt and horizontal mixers

non-agitating trucks are used for:

short haul projects

10yd3 concrete buckets are helpful for:

high elevation

concrete mictures made a mobil truck mixer is commonly:

Volume based

Common concrete barrel size in NJ is:

4-12 yd3

production, delivery and placecmnt of ready mix concrete is based on:

ASTM C-94

Scale that has a counter weight

Scale Lever

Scale that is electronic

Single Load

Scale that has no moving parts

Four Point

In batching, Cement should be weighed:

First

In batching Pozzolans should be batched:

Second

water batching can be done by:

Volume and Weight

loading method which blends fine and coarse and cememt before

Ribbon Batching

Loading method where trucks get aggregate, water and admixtures; thenthey move to the next station to get the cement

Dry Batching