Aggregates, which make up roughly 60% to 75% of ready-mix concrete’s volume, are obtained from quarries and aggregate banks.
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.
This is the mix’s vital fluid, which sets of a chemical reaction when it comes into contact with the 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.
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 are 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.