Ready-mix concrete is concrete that is manufactured in a factory or batching plant, according to a set recipe, and then delivered to a work site, by truck mounted in–transit mixers. This results in a precise mixture, allowing specialty concrete mixtures to be developed and implemented on construction sites. The first ready-mix factory was built in the 1930s, but the industry did not begin to expand significantly until the 1980s, and it has continued to grow since then. Ready-mix concrete is sometimes preferred over on-site concrete mixing because of the precision of the mixture and reduced work site confusion. However, using a pre-determined concrete mixture reduces flexibility, both in the supply chain and in the actual components of the concrete. Ready-mix concrete is also referred as the customized concrete products for commercial purpose. Ready- mix concrete, or RMC as it is popularly called, refers to concrete that is specifically manufactured for delivery to the customer's construction site in a freshly mixed and plastic or unhardened state. Concrete itself is a mixture of Portland cement, water and aggregates comprising sand and gravel or crushed stone. In traditional work sites, each of these materials is procured separately and mixed in specified proportions at site to make concrete Raw material used to produce concrete Water Additives Cement Aggregates Air 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 are poured into the cement mixer, and it begins rotating.
Ready-mix concreteisconcretethat is manufactured in a factory
orbatching plant, according to a set recipe, and then delivered to
a work site, by truck mountedintransit mixers. This results in a
precise mixture, allowing specialtyconcrete mixturesto be developed
and implemented on construction sites. The first ready-mix factory
was built in the 1930s, but the industry did not begin to expand
significantly until the 1980s, and it has continued to grow since
then.Ready-mix concrete is sometimes preferred over on-site
concrete mixing because of the precision of the mixture and reduced
work site confusion. However, using a pre-determined concrete
mixture reduces flexibility, both in thesupply chainand in the
actual components of the concrete.Ready-mix concrete is also
referred as the customized concrete products for commercial
purpose. Ready-mix concrete, or RMC as it is popularly called,
refers to concrete that is specifically manufactured for delivery
to the customer's construction site in a freshly mixed and plastic
or unhardened state. Concrete itself is a mixture of Portland
cement, water and aggregates comprising sand and gravel or crushed
stone. In traditional work sites, each of these materials is
procured separately and mixed in specified proportions at site to
make concrete
Raw material used to produce concrete Water Additives Cement
Aggregates Air
AggregatesAggregates, which make up roughly 60% to 75% of
ready-mix concretes volume, are obtained from quarries and
aggregate banks.AdditivesAdditives 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
concretes durability or reduce a concretes water content in an
effort to shorten setting times.WaterThis is the mixs vital fluid,
which sets of a chemical reaction when it comes into contact with
the cement.CementNo other material rivals cements importance in the
mix; its 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 mixingDuring 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.
