Reducing Bulk Samples to Testing Size by Quartering (ASTM C702 and AASHTO R 76)
Updated: February 24, 2025
Summary
The video demonstrates how to divide a bulk sample of aggregate into equal portions using the quartering method when a mechanical splitter is unavailable. Tools needed include a scoop shovel, brush, and a quartering cloth kit. The process involves spreading the sample on a canvas blanket, shoveling it into a cone, and dividing it with a trowel. An alternative method uses a canvas and stick to divide the sample into two portions.
Demonstration of the Quartering Method
Demonstration of how to reduce a bulk sample of aggregate into approximate equal portions using the quartering method when a mechanical splitter is unavailable.
Tools Needed for Quartering Method
Tools required include a scoop shovel or trowel with a straight edge, a broom, brush, and a Gilson hm 275 quartering cloth kit.
Dividing the Bulk Sample
Instructions on dividing the bulk sample by spreading it out on a canvas blanket, shoveling the sample into a conical pile, and dividing it further with a trowel.
Alternative Quartering Method
An alternative method involving a canvas for dividing the sample into two portions by sliding a stick underneath and lifting it to divide the sample.
FAQ
Q: What is the purpose of using the quartering method for reducing a bulk sample of aggregate?
A: The purpose of using the quartering method is to divide the sample into approximate equal portions when a mechanical splitter is unavailable.
Q: What tools are required for implementing the quartering method in this scenario?
A: Tools required include a scoop shovel or trowel with a straight edge, a broom, brush, and a Gilson hm 275 quartering cloth kit.
Q: Describe the process of dividing the bulk sample using the quartering method on a canvas blanket.
A: The process involves spreading out the bulk sample on a canvas blanket, shoveling the sample into a conical pile, and further dividing it with a trowel.
Q: What is the alternative method mentioned for dividing the sample without a mechanical splitter?
A: An alternative method involves using a canvas, where the sample is divided into two portions by sliding a stick underneath and lifting it to divide the sample.
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