Two Gang Prism Mould 25x25x285mm

Standard: ASTM C490, ASTM C531

Two Gang Prism Mould

Two Gang Prism Mould is used to create 2 precise 25x25x285mm prismatic specimens of concrete for testing purposes. These specimens are typically used to determine the compressive strength of concrete, which is a critical parameter in assessing the quality and durability of concrete structures. The "two gangs" refers to the fact that this particular mould can produce two specimens simultaneously, which can increase efficiency in testing processes.

With two gang compartments design, fully polishing surface to achieve perfect curing finishing and high accuracy specimen. Come with a pack of brass inserts.

Technical Specifications of Two Gang Prism Mould

Unit Consist Of:

Optional Accessories

Standards

1. ASTM C490: This standard specifies the requirements for molds used in forming concrete test specimens. These molds are typically made of metal and are used to create prismatic specimens of concrete for various testing purposes, such as compressive strength testing. ASTM C490 covers the dimensions, materials, and construction requirements for these molds to ensure consistency and accuracy in testing.

2. ASTM C531: This standard outlines the test method for measuring the flexural strength of concrete using a simple beam with third-point loading. While not directly related to two-gang prism molds, it is often referenced alongside ASTM C490 for testing concrete specimens. The prismatic specimens produced using molds that conform to ASTM C490 can be subjected to flexural strength testing according to the procedures outlined in ASTM C531.

Test Procedure of Two Gang Prism Mould

1. Preparation of the Mold: Ensure that the two-gang prism mold is clean and free from any debris or residue from previous tests. Lubricate the interior surfaces of the mold with a suitable release agent to facilitate easy removal of the hardened concrete specimens.

2. Mixing of Concrete: Prepare the concrete mix according to the desired specifications, including the proper proportions of cement, aggregates, water, and any additives. Thoroughly mix the concrete to achieve uniform consistency and workability.

3. Filling the Mold: Place the clean, lubricated two-gang prism mold on a level surface. Pour the freshly mixed concrete into the mold, ensuring that it is evenly distributed and compacted to eliminate any voids or air pockets. Use appropriate vibration techniques to help consolidate the concrete and remove entrapped air.

4. Finishing: Strike off the excess concrete from the top of the mold using a straightedge or trowel to achieve a smooth, level surface. Clean any spilled concrete from the exterior of the mold to prevent interference with subsequent handling or testing.

5. Curing: Cover the filled mold with a damp cloth or plastic sheeting to prevent moisture loss and promote proper curing of the concrete specimens. Follow the recommended curing conditions, such as temperature and duration, specified for the concrete mix being tested.

6. Demolding: After the specified curing period has elapsed, carefully remove the two-gang prism mold from the cured concrete specimens. Take care to avoid damaging or disturbing the specimens during demolding.

7. Testing: Once demolded, the concrete specimens can be subjected to various tests, such as compressive strength, flexural strength, or other relevant properties, depending on the specific requirements of the project or standards being followed.

8. Reporting: Record all relevant information, including the dimensions, curing conditions, and test results of the concrete specimens in accordance with the applicable standards or project specifications.