Transportation of concrete from the mixer should be transported to the point where it has to be placed as rapidly as possible. By a method which prevents segregation or loss of ingredients.

Precaution should be taken while transporting concrete to ensure the homogeneity is obtained at time of mixing ought to be maintained.

Prevention of segregation is the most important consideration in handling and transportation of concrete.

1. Use of handcart/ wheelbarrow – used when transporting of concrete to ground level.
2. Use of buckets and cranes
3. Use of belt conveyors – used in transporting fairy stiff concrete. When using conveying belt, it is necessary that the flow of concrete be continuous to minimize effect of segregation.
4. Use of a chute – used when concrete is to be used in a surface below the ground level i.e basements and foundations
5. Truck mixer.
6. Use of hoist and skip – lifts concrete to higher heights.
7. Use of pumps and pumpline.

Pumping of concrete through steel pipeline is one of the successful methods of transporting of concrete.

Pumped concrete has largely been used in construction of multistoried buildings, tunnels and bridges.

Although the method of transporting and placing of concrete by pumping is fast and efficient, a small part of un-pumpable mix in hopper can block the pump leading to blockage.

High temperature may cause blockage.

A pipeline not well cleaned after previous operation may cause blockage.

1. Ready mixed concrete:- a concrete whose component are weight – batched at central batching plant mixed either at its plant itself and then transported to the building site and delivered in a condition ready to use.
2. Proportioning of ready mixed concrete;-  it aims at obtaining an economical and combination of materials to produce concrete with properties desired for the intended use such as workability, strength, durability and appearance.
3. Production of ready mixed concrete.

1. Transit mix

Materials are batched at central plant and are mixed during the period of transit from the site. It’s also referred to as track mixed or dry batch concrete.

• Shrink mixed concrete.

Concrete that is partially mixed in stationary plant, mounted mixer and then discharge into the drum/truck for completion of mixing.

• Central mixed concrete:

Includes a stationary plant mounted mixer that mixes concrete before it is discharged into a truck mixture.

1. Faster production capacity than transits mixed concrete.
2. Improved concrete quality.
3. Reduced wear on the truck mixer drum.
4. Delivery of ready mixed concrete. It is brought to the construction site in a truck mounted rotating mixture.
5. Ready mixed concrete specification for discharge on the construction site is 90 minutes and before 300 revolutions and before water is added to cement.

Since the ready mixed concrete (rmc) is a manufactured product, specification test and evaluation are required during the manufacturing process to produce high quality concrete. Some important properties of concrete that are measured by basic quality control test are

1. Strength
2. Temperature
3. Slump test
4. Air content
5. Unit weight.