Skip to main content

Production Process of Ready Mix Concrete

Ready mix concrete is a mixture of Portland cement, water and aggregates comprising sand and gravel or crushed stone. During the mixing phase the different components come together to produce a uniform mass of concrete.

A ready-mix concrete plant consists of silos that contain cement, sand, gravel and storage thanks of additives such as plasticizers, as well as a mixer to blend the components of concrete. These components are gravity fed into the preparation bin. The quality of concrete can be maintained only if the formulation is carefully administered. The water dosage in particular must be very precise and the mixing itself must remain continuous and consistent. To accommodate all of these constraints, the concrete plants have been automated to ensure reliability throughout the manufacturing process using centralized computer.

Finally, the concrete prepared in a batch plant is loaded into a mixer truck, also known as a transit mixer, which delivers it to the construction site.
Raw material used to produce concrete

 Aggregates
Aggregates, which make up roughly 60% to 75% of ready-mix concrete’s volume, are obtained from quarries and aggregate banks.
Additives
Additives are solid or liquid chemical substances that can be added to ready-mix concrete before or during preparation. Most commonly used additives either improve a hardened concrete’s durability or reduce a concrete’s water content in an effort to shorten setting times.
Water
This is the mix’s vital fluid, which sets of a chemical reaction when it comes into contact with the cement.
Cement
No other material rivals cement’s importance in the mix; it’s the ingredient that gives concrete its resistance. Although types II and IV are also employed, the most widely used cements are gray Portland type I and Pozzolana Portland type C-2.
Concrete mixing
During the mixing phase the different components come together to produce a uniform mass of concrete. Mixing time is registered from the moment material and water is poured into the cement mixer, and it begins rotating.

While transporting concrete to a site, the cement mixer never stops revolving at a speed of two to six rotations per minute.
CVC ReadyMix
Labels:
Location: Kochi, Kerala, India

Comments

Post a Comment

Popular posts from this blog

Types of Concrete

There are different types of concrete are manufactured today for different needs and applications. The formulas and ingredients vary to suite the condition and preference of various construction designs. Today we are discussing about the different types of concrete that are commonly used. Normal or Regular Concrete The concrete in which common ingredients are aggregate, water, cement is known as normal or regular concrete. It is also called normal weight concrete or normal strength concrete. It has a setting time of thirty to ninety minutes depending upon moisture in atmosphere and the fineness of cement. The development of the strength starts after seven days the common strength values is 10 MPa (1450 psi) to 40 MPa (5800 psi). At about 28 days 75 - 80% of the total strength is attained. Almost at 90 days 95% of the strength is achieved. Its density ranges from 140 pcf to 175 pcf and is strong in compression and weak in tension. High strength concrete It posses compr...
Post a Comment
Read more

Concrete and Screed

Concrete and screed and are formed of the same basic ingredients – cement, aggregates and water. But what makes them different is the size of aggregates, the cement grade, mix consistency, and their intended application or use. Composition and Mix Proportion Concrete in its simplest form is a rock like mass formed by the hardening of cement paste and aggregates  mixed in a proportion of – 1 Cement: 2 Sand: 3 Coarse aggregates (ballast/gravel). But many variations are applied to this basic mix design to suit different uses and strength requirements. Screed  is a thin layer of cement paste and sand/ fine aggregates, laid onto a concrete floor base or under floor heating to act as a smooth flat levelling surface for taking on the final floor finish. Screeds generally follow a mix proportion of 1Cement: 3-5Sand (0-4mm washed sharp sand for levelling screeds). For heavy duty screeds 25 percent of the 0-4mm sand is replaced by 6-10mm single sized aggregates, making the...
Post a Comment
Read more