ISO 1442:1997 Protocol for Determining Water Content in Sand

a. What is the purpose of the ISO 1442:1997 protocol?

b. Identify the steps of "Equipment Preparation", "Sample Preparation", and "Measurement".

c. What is the consequence on the measured result if the desiccator was not used in Step 4 and how would it affect the result?

Final Answer:

The ISO 1442:1997 protocol is used to determine the amount of water in a sample of sand. It involves equipment preparation, sample preparation, and measurement steps. Not using a desiccator in Step 4 would affect the measured result by allowing moisture to influence the sand sample's weight.

Explanation:

The purpose of the ISO 1442:1997 protocol is to determine the amount of water in a sample of sand. The protocol involves equipment preparation, sample preparation, and measurement. In the equipment preparation steps, the sand is dried and stored in an airtight closed bottle, and the dish, sand, and glass rod are dried in an oven. In the sample preparation steps, a sample of the sand is homogenized and transferred to a dish. In the measurement steps, the dish with its contents and the glass rod are weighed, heated in the oven, cooled, and weighed again until the weight difference is below 0.1% of the test portion's mass.

If the desiccator was not used in Step 4, the measured result would be affected. A desiccator is used to create a dry environment, preventing moisture from the surroundings from affecting the sand sample's weight. Without using a desiccator, the sand sample would absorb moisture from the air, leading to an increase in its weight. This would result in an inaccurate measurement of the water content in the sand sample.