Aashto T112 Form

What is the Aashto T112

The Aashto T112 is a standard test method developed by the American Association of State Highway and Transportation Officials (AASHTO) for determining the specific gravity and absorption of coarse aggregates. This form is essential for civil engineering and construction projects, ensuring that materials used in road construction meet safety and performance standards. Understanding the properties of aggregates is crucial for the durability and stability of infrastructure.

How to use the Aashto T112

Using the Aashto T112 involves several steps that ensure accurate measurement of the specific gravity and absorption of coarse aggregates. First, collect a representative sample of the aggregate material. Next, dry the sample to a constant weight and record this initial weight. Immerse the dry sample in water and measure the weight of the submerged sample. Finally, calculate the specific gravity and absorption using the recorded weights. Following these procedures helps maintain the integrity of the test results.

Steps to complete the Aashto T112

Completing the Aashto T112 requires careful attention to detail. Here are the steps to follow:

• Gather necessary materials, including a balance, water, and the aggregate sample.
• Dry the aggregate sample in an oven until it reaches a constant weight.
• Weigh the dry sample and record the weight.
• Submerge the sample in water and measure the weight of the submerged sample.
• Calculate the specific gravity and absorption based on the recorded weights using the appropriate formulas.

Legal use of the Aashto T112

The legal use of the Aashto T112 is significant in the context of construction and engineering projects. Compliance with this standard ensures that the materials used meet the required specifications for safety and performance. Using the Aashto T112 in project documentation can help protect against liability issues and ensure adherence to local and federal regulations. Proper documentation of the test results is essential for legal and compliance purposes.

Key elements of the Aashto T112

Several key elements define the Aashto T112 and its application in testing aggregates:

• Specific Gravity: A measure of the density of the aggregate compared to water.
• Absorption: The amount of water the aggregate can absorb, which affects its performance in concrete mixes.
• Testing Conditions: Controlled conditions under which the test must be conducted to ensure accuracy.
• Documentation: Proper recording of weights and calculations to validate results.

Examples of using the Aashto T112

Examples of using the Aashto T112 include its application in various construction projects. For instance, when preparing concrete for a highway, engineers may use the Aashto T112 to determine the specific gravity of the aggregates being used. This information helps in designing a concrete mix that meets structural requirements. Similarly, the Aashto T112 can be used to evaluate recycled aggregates, ensuring they meet necessary standards for reuse in construction.