Marshall Compaction Moulds
Size : 150mm x 120mm x 6mmm
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Warranty 1 year
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Description:
A Marshall Compaction Moulds also known as a Marshall Compaction Moulds is a specialized tool used in the construction industry to prepare compacted asphalt samples for testing. The Marshall method is a widely used procedure for designing and evaluating asphalt mixtures, especially for flexible pavements such as roads, highways, and airport runways.
Description of a typical Marshall Mold:
- Material: Marshall Molds are usually made of high-quality, durable metal, such as steel or cast iron, to withstand the compaction process and provide consistent results over time.
- Shape and Size: The mold is cylindrical in shape and consists of two parts: a base and a collar. When assembled, it forms a cylindrical cavity where the asphalt mixture will be compacted. The standard size of the mold is 101.6 mm (4 inches) in diameter and 63.5 mm (2.5 inches) in height.
- Collar Extension: In some cases, a collar extension may be used to increase the height of the mold, allowing for larger asphalt samples to be prepared.
- Base Plate: The mold comes with a base plate that provides support during the compaction process and ensures the bottom surface of the asphalt sample is flat and even.
- Perforated Plate: The base plate often has perforations or small holes to allow air and excess asphalt binder to escape during compaction.
- Collar Clamp: The two parts of the mold are held together by a collar clamp mechanism, ensuring a tight fit during compaction.
How Marshall Molds are used: Marshall Compaction Moulds
- Sample Preparation: A representative sample of the asphalt mixture is obtained from the construction site or asphalt plant.
- Heating: The asphalt sample is heated to an appropriate temperature to make it workable for compaction.
- Compaction: The heated asphalt sample is placed into the Marshall Mold cavity. A compaction hammer with a specified weight is then used to apply a specific number of blows to the sample to achieve the desired compaction level.
- Specimen Removal: After compaction, the collar clamp is released, and the mold is disassembled to remove the compacted asphalt specimen.
- Testing: The compacted asphalt specimen is used for various tests, including density, stability, flow, and Marshall Quotient, which are essential parameters for evaluating the quality and performance of the asphalt mixture.
The Marshall Method of mix design and testing is widely used due to its simplicity and effectiveness in predicting the behavior of asphalt mixtures under traffic loads and environmental conditions. Marshall Molds play a crucial role in this process, ensuring that the asphalt samples are prepared consistently and accurately for reliable testing and evaluation. Marshall Mold
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