Roller compacted concrete (RCC) is a special type of concrete that shares similarities with traditional concrete but has some unique features. This concrete is cost-effective and offers specific advantages in various construction applications.
RCC uses the same basic materials as regular concrete but in different proportions. Besides cement, fine and coarse aggregates, and water, fly ash is added to partially replace Portland cement. Additionally, chemical admixtures like water reducers, retarders, accelerators, and superplasticizers may be included to achieve specific properties.
Compressive Strength : RCC exhibits compressive strength ranging from 4000psi to 6000psi, comparable to conventional concrete. The low water-cement ratio contributes to achieving high compressive strength, with some structures exceeding 7000psi.
Flexural Strength : Flexural strength, ranging from 500psi to 1000psi, correlates with density and compressive strength in RCC. This property is essential for applications where the concrete may undergo bending stresses.
Bond Strength : RCC is placed in layers, and the bonding between these layers is crucial. Adequate bond strength is attained when the concrete layers are thoroughly bonded during the compaction process.
Shrinkage : Due to lower water content, RCC typically experiences lower shrinkage and reduced crack formation compared to conventional concrete.
Roller compacted concrete exhibits characteristics such as toughness, durability, strength, sustainability, versatility, and resistance to freezing and thawing.
RCC finds applications in various construction projects, including:
Several advantages make RCC a preferred choice in construction:
While RCC offers many benefits, there are some drawbacks to consider:
In conclusion, Roller Compacted Concrete provides a practical and cost-efficient solution for various construction needs, offering a balance of strength, durability, and versatility.
