Ready Mixed Concrete

Ready Mixed Concrete

Ready-mixed  concrete (RMC) is a specialized material in which cement, aggregate, and other ingredients are weight batched at a center batching plant, mixed either at the plant, itself or in truck mixers, and then transported to the construction site and delivered in a condition ready to use, is termed ready mixed cocnrete(RMC). RMC is manufactured at a place away from the construction site, the two locations manufactured at a place away from the construction site, the tow locations bein linked by a transport operation. The technique is useful in congested sites or at diverse workplaces and saves the consumer from the botheration sites or at diverse workplaces and saver the consumer from the botheration of procurement, storage, and handling of concrete materials.

Ready-mixed Concrete is produced under factory conditions and permits close control of all operations of manufacture and transportation of fresh concrete. Due to its durability, low cost and its ability to be customized for different applications, ready-mixed concrete is one of the most versatile and popular building materials. The concrete quality and quantity or volume required for the particular application is specified by the consumer.

Proportioning of Ready-mixed Concrete- 

 The Proportioning of an RMC aims at obtaining an economical and practical combination of material to produced concrete with the properties desired for its intended use, such as workability, strength, durability, and appearance. The following basics of a good concrete should be considered while proportioning RMC for the desired Performance.

Concrete aggregates are required to meet appropriate specification and in general should be clean, strong and durable.

Fly ash or other supplementary cementitious materials, which enhance concrete properties, are normally added to RMC. The key to quality cocnrete is to use the least amount of water that can result in a mixture which can be easily placed, compacted and finished.

Admixtures are commonly used in small quantities to improve the properties of fresh and hardened cocnrete such as the rate of setting and strength development of concrete, especially during hot and cold weather.
Water reducing admixtures while minimizing the water content in the mixture, increase strength and improve durability.
The most common is an air-entraining agent that developers millions of tiny air bubbles in concrete, which impart durability to concrete in freezing and thawing exposure.

Advantages Of Ready Mixed Concrete

• Through the mixing of each batch, it helps to produce concrete of uniform quality, durability, and strength.
• It helps to create a more efficient operation at the job site as regards work, alignment, finish, etc.
• The durability of concrete RMC can ensure correct water-cement ratio to be maintained. Hence the durability of RMC is consistent and better.
• Ready-mixed concrete materials are stored in bulk and used in bulk. Hence wastage that occurs in loose handling of cement, etc. is completely avoided.
• The problem of finding spaces at the job site for stacking aggregate and storing cement is eliminated.
• Excess materials are not left to clear up after a job is completed.