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What are the test taken for ready mix concrete before and after?


Ready mix concrete  is a ubiquitous construction material that plays a critical role in a wide range of projects, from building bridges to construction of high-rise buildings. Before it can be delivered and used at a construction site, rigorous testing and inspection must be performed to ensure that it meets the required quality standards. In this article, we will explore the different tests taken for ready-mix concrete London before and after delivery to the construction site.


Before Delivery


1. Slump Test: Slump testing measures the plasticity and workability of freshly mixed concrete. The test requires molding a test specimen and measuring the resulting deformation, or slump. This test is important as it indicates the consistency and compressive strength of the concrete.


2. Air Content Test: This test helps to determine the amount of air bubbles present in the concrete mixture which could affect its durability, workability and strength. The air content must be properly adjusted to meet the specific project requirement.


3. Compressive Strength Test: This test measures the strength of the concrete by applying pressure to a cube or cylinder of concrete at a set interval of time. As this test measures the strength of hardened concrete, it’s very crucial to ensure that the concrete mixture meets the minimum required compressive strength.


After Delivery


1. Slump Retention Test: This test measures the change in slump after a certain time, which is critical to ensure that the concrete can maintain its consistency as it is transported to the construction site.


2. Setting Time: Setting time test is also known as the time of stiffening. This test is performed to measure the time taken for the concrete to solidify. This test helps determine when it’s safe to start working on the concrete.


3. Durability Test: Durability tests help to determine the quality of the concrete in harsh conditions such as freeze-thaw cycles, erosion, and chemical exposure.


4. Moisture Test: Moisture test ensures that the concrete has the correct amount of moisture which is critical to ensure that the concrete mix does not dry too quickly and compromise its strength.


In conclusion, taking proper testing measures for ready mix concrete is critical to ensure that it meets the quality standards required for the construction project. Through rigorous testing and inspection, the quality of the concrete can be maintained, leading to safer, more durable and long-term structures.


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