What is Ready Mixed Concrete (RMC)?
Ready Mixed Concrete is a tailor-made concrete that is produced in a factory or within a batching plant based on the standard requirements. The concrete mix is then taken to the worksite within transit mixers mounted over a truck — this type of concrete guarantees better durability and sustainability. As work is performed by an expert supplier, the mixture formed is accurate and of more top quality. Special concrete mixtures, too, can be made effectively by this concrete manufacture process.
Types of Ready Mixed Concrete
There are majorly three types of ready mix concrete (RMC) depending upon the mixing of the various ingredients.
1. Transit mixed concrete – It is also called dry-batched concrete because all the necessary components, such as water, are charged directly into the truck mixer. The mixer drum is gyrated fast at charging speed while loading of the material, and thereafter, it continues rotating at an average agitating speed.
2. Shrink mixed concrete – The concrete is partially mixed in the plant mixer, and then balance mixing is done in the truck-mounted drum mixer during transit time. The amount of mixing in the transit mixer will vary depending on the extent of mixing done in the central mixing plant. Tests must be carried out in order to determine the requirement of mixing the drum mixer.
3. Central-mixed concrete – It is also called the central batching plant, where the concrete is thoroughly mixed before loading into the truck mixer. At times, the plant is also referred to as wet-batch or pre-mix plants. While carrying the concrete, the truck mixer acts as an agitator only. Sometimes, when the workability requirement is low, or the lead is less, non-agitating units or dump trucks can also be used.
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The key players of global ready-mix concrete market includes ACC Limited (India), Vicat SA (France), Lafarge (France), Buzzi Unicem S.p.A. (Italy), Barney & Dickenson, Inc.(U.S.), R.W. Sidley, Inc. (U.S.), CEMEX S.A.B. de C.V.(Mexico), Italcementi Group (Italy), UltraTech Cement Limited (India), Holcim Ltd.(Switzerland), and HeidelbergCement (Germany)
Benefits of Ready Mixed Concrete
Qualitative concrete is achieved as a ready-mix concrete mix plant that makes use of sophisticated equipment and uniform methods. There is rigorous control over testing materials, process parameters, and continuous monitoring of crucial practices during the production process.Poor control on the input materials, batching as well as mixing techniques in case of site mix concrete is resolved in a ready-mix concrete process. Speed in the construction practices in ready mix concrete plant is continuously followed by having mechanized operations. The output derived from site mix concrete plant using an 8/12 mixer is 4 to 5 metric cubes per hour, which are 30-60 metric cubes per hour in a ready mix concrete plant. Better handling and proper mixing practice help reduce consumption of cement by 10 – 12%. The use of admixtures and other cementitious materials will help to reduce the amount of cement. The concrete mixer is used with high versatility. It is placed by following the best concrete placing methods. Cement is saved, and the dust caused will be reduced as ready mix concrete making usage of mass concrete instead of bags of cement. Cement saving will preserve energy and resources. Fewer consumption results in less production of cement hence less environmental pollution. The more durable structure is obtained thus increasing the service life and saving the life cycle costs. Ready-mix concrete manufacture has less dependency on human labor; hence, the chances of human errors are reduced. This will also reduce the dependence on intensive labors. Small or large quantities of concrete according to the specification is delivered timely at the site. This will require no space for storing the raw materials at the location. There is no delay owing to site based batching plant erection/ dismantling; no equipment to hire; no depreciation of costs. Petrol and diesel consumed are relatively less; thus, noise and air pollution are lessened.
Disadvantages of Ready Mixed Concrete
The transit time from the preparation of concrete to the delivery site is likely to result in loss of operational factors. This will demand additional water or admixtures to maintain the workability as per the specification. At the site, the QA/QC engineer is supposed to check the workability through a slump test before deploying it for construction. Traffic while the transit of concrete can result in the setting of concrete. This will hence require the addition of admixtures to delay the setting period. But unexpected traffic is a significant problem. The formwork and placing arrangement should be prepared in advance in a large area as the concrete can be bought in more substantial amounts.
The global ready-mix concrete market can be segmented on the basis of geography into Asia Pacific, North America, Europe, and the Rest of the World. In terms of geography, Asia Pacific accounted for the majority market share during 2016 and will continue to dominate the market for the next four years. Asia Pacific will lead in the market owing to a growing number of new infrastructural projects in India, Singapore, China, and Thailand. Rapid industrialization and urbanization in these countries are behind the growth of the market in Asia Pacific. Some of the major factors responsible for the market’s growth in the region is the rapid industrialization, population growth, urbanization, and favorable government policies, availability of cheap resources and skilled workforce, and low operational and labor costs. On the other hand, it is expected that the introduction of new infrastructure construction projects will create a heightened demand for ready-mix concrete. This will ensure a continued growth of the market in the coming years.
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List of Tables
Table 1 Global Ready Mix Concrete Market: by Region, 2017-2023
Table 2 North America Ready Mix Concrete Market: by Country, 2017-2023
Table 3 Europe Ready Mix Concrete Market: by Country, 2017-2023
Table 4 Asia Pacific Ready Mix Concrete Market: by Country, 2017-2023
Table 5 Row Ready Mix Concrete Market: by Country, 2017-2023
Table 6 Global Ready Mix Concrete Market, by Production, by Regions, 2017-2023
Table 7 North America Ready Mix Concrete Market, by Production, by Country, 2017-2023
Table 8 Europe Ready Mix Concrete Market, by Production, by Country, 2017-2023
Table 9 Asia Pacific Ready Mix Concrete Market by Production, by Country, 2017-2023
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