Concrete batching plants are indeed divided into two types: dry batch concrete plants and wet batch concrete plants, each of which has unique characteristics and application scenarios. Generally speaking, wet batch concrete plants may require more complex equipment and technology to ensure the stability of the concrete's quality due to the fact that their production process involves the transportation and preservation of the mix, and thus the price may be relatively high. On the other hand, dry batch concrete plants have relatively lower technical requirements in the production process, and the equipment configuration may be relatively simple and the price may be relatively low. When using a concrete batching plant on a construction site, the choice between a dry batch concrete plant or a wet batch concrete plant depends mainly on the specific construction needs, environmental conditions and resource allocation.
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Below is a detailed comparison of dry batch concrete plant vs wet batch plant:
Working Principle:
The working principle of a dry batch concrete plant is to mix dry materials such as cement, sand, and stone according to a predetermined ratio, but without adding water. The production of dry mix concrete is completed at the mixing plant, after which the mixed dry materials are transported to the construction site through transportation trucks, and then water is added and mixed into concrete at the site.
Wet batch concrete plant, on the other hand, mixes raw materials such as cement, sand, stone and water in a certain proportion during the working process to form wet mix concrete. After mixing in the mixing plant, wet-mix concrete can be directly transported to the construction site for pouring.
Advantages and disadvantages:
The advantage of dry-mixed concrete is that segregation and stratification are not easy to occur during transportation, which ensures the stable quality of concrete. However, its disadvantage is that it needs to be mixed with water at the construction site, which requires high skills of the workers on site, and the mixing process may be affected by environmental conditions, resulting in fluctuations in the quality of concrete.
Wet-mixed concrete has the advantages of high production efficiency and lower skill requirements for on-site personnel. However, its disadvantages are that segregation and stratification are likely to occur during transportation, there are certain restrictions on transportation time and distance, and the quality of the mixture may not be as stable as that of dry-mixed concrete.
Application Scenario:
Dry batch concrete plant is suitable for situations that require long-distance transportation or restricted on-site mixing conditions. Because of the stable quality of concrete during transportation, it is especially suitable for large-scale projects or occasions where the quality of concrete is required to be high.
Wet batch concrete plant is suitable for the case of closer to the construction site and shorter transportation time. Due to its high production efficiency and low skill requirements for on-site workers, it is especially suitable for small-scale projects or occasions with a tight schedule.
In summary, dry batch concrete plant and wet batch concrete plant have their own characteristics and advantages, and the choice of which concrete batching plant mainly depends on the demand of specific projects, transportation conditions and quality requirements and other factors. In actual application, the selection and configuration should be made according to the specific situation to ensure the quality and efficiency of concrete production.
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RMC is a type of concrete, which is a mixture of Portland Cement, Water, Fine (Sand) and Coarse aggregates. It is manufactured in a cement factory or batched plants in specific proportions and transported in a Transit-mixer to the construction sites.
RMC is eco-friendly compared to site mix concrete because mixing is done in closed chambers as it reduces the noise and air pollution.
Types of Ready-Mix-Concrete
There are three types in ready-mix concrete, and they are briefly presented below:
Transit mixed concrete
It is also known as truck mixed concrete, in which materials are batched at a central plant and are thoroughly mixed in the truck in transition. Transit-mixing separate water from the cement and aggregates and allows the concrete to be mixed instantly before using at the job site.
Transit-mixing avoids the problems of early hardening and slump loss that result in delays in transportation. The disadvantage is the capacity of the truck is smaller than the same truck carrying central-mixed concrete.
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The first RMC plant in India was set up in Pune, 1992.
Shrink-mixed concrete
It is used to increase the truck's load capacity where concrete is mixed at the plant to shrink the volume of the concrete. The balance mixing of concrete is completed in the truck during transit time or at the construction site.
Central-mixed concrete
Sometimes, the central mixed plants are referred to as wet batch plants. The concrete is batched and completely mixed in a stationary mixer at the plant site before discharging it into the truck mixers.
The advantages of central-mixed concrete are better quality control, consistency, higher production capability and reduce wear on the truck mixer drums.
RMC was first used for the construction of Bhakra Nangal Dam Project in Bilaspur, Himachal Pradesh.
Volumetric mobile mixer is also a truck that contains raw materials and water, which can be mixed on the truck at the job site. The on-truck mixing at the job site eliminates the problems of ready-mix concrete.
Advantages of Ready-Mix Concrete
Better quality concrete
is produced as it is made from consistent methods and in advanced equipment.reducing labour cost.
Reduce the time
required for construction.Safe work practices
- No disruption in the project schedules.Disadvantages of Ready-Mix Concrete
initial investment.
effective transportation system
from the batching plant to the job site.210 minutes
of batching the plant. Traffic jam or breakdown of the vehicle can create a problem.Quality Control is very important as it has to be mixed with a proper dose of admixtures and transported to different locations. All the ingredients used for the mixture of concrete are thoroughly tested for quality and physical properties based on Indian Standard Codes. Everything is taken care of by batching plants while manufacturing the concrete mixture to produce highly durable, sustainable and premier quality for long-lasting structures.
Check Out: Types of Cement Concretes used in Construction
Technically Reviewed by Rajesh Pagadala, MS, Founder & CEO - BuildersMart. Written by Vani paspula, Content Manager.
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