The Rapid Chloride Permeability Test (RCPT) Machine is used to evaluate the permeability of concrete by measuring the penetration of chloride ions. This test helps determine the durability and quality of concrete, especially in structures exposed to aggressive environmental conditions.

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By applying a constant voltage across a concrete specimen, the RCPT machine measures the total electrical charge passed over a fixed time period. This provides a clear indication of the concrete’s resistance to chloride ion penetration, which is a key factor in preventing reinforcement corrosion.

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The RCPT Machine is designed to deliver accurate and repeatable results in accordance with ASTM C1202 and AASHTO T277 standards. It consists of a power supply unit and test cells that hold concrete specimens securely during testing. The system continuously records current flow and calculates the total charge passed in Coulombs. This test is widely used in infrastructure projects, quality control labs, and research institutions to ensure long-term durability and performance of concrete structures.