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Flow Tables provided by Certified Material Testing Products offer the ability to determine the consistency of mortars. Each flow table has a 10in diameter bronze table and is supported by a cast iron frame.
The Motorized Flow Table with Counter has a precision controller so that it complies with ASTM and AASHTO standards. The 12in Steel Straight Edge has a beveled edge and is perfect for striking mortar specimens.
Each flow table includes a flow mold that is cast in bronze.
Flow tables are widely used in the flow test of cement mortar to measure the consistency and workability of the mixture. The flow test is an essential procedure in construction and materials testing, as it provides valuable information about the behavior and performance of cement mortar during placement and finishing.
Flow tables consist of a circular table mounted on a vertical shaft, which can be rotated manually or using a motor. The table is marked with concentric circles and radial lines to aid in the measurement process. A mold or slump cone is placed at the center of the table, and a sample of freshly mixed cement mortar is poured into the mold.
During the flow test, the table is set in motion, and the mortar begins to spread outwards due to centrifugal force. As the mortar flows, it reaches a point where it starts to stop spreading, indicating that it has reached its maximum flow or diameter. The diameter of the mortar spread is measured using the marked circles on the table, providing a quantitative measure of flow.
The flow value obtained from the flow table test is an indicator of the workability of the cement mortar. It reflects the ability of the mortar to flow and fill molds or formwork, which is crucial for achieving proper consolidation and compaction during construction activities. A higher flow value indicates a more fluid and workable mortar, while a lower value suggests a stiffer consistency.
Flow tables are particularly useful for quality control and quality assurance purposes in construction projects. By conducting flow tests on cement mortar samples, contractors and engineers can ensure that the mixture meets the required specifications and exhibits the desired workability for a particular application. Adjustments can be made to the mix proportions or water content if the flow values are outside the acceptable range.
In summary, flow tables play a vital role in the flow test of cement mortar by providing a standardized method to evaluate its workability and consistency. By measuring the spread diameter of the mortar on the rotating table, flow tables enable construction professionals to make informed decisions about mix design adjustments and ensure the successful placement and finishing of cement mortar in various construction applications.