AASHTO TP 81-12 (2017) PDF Download

The AASHTO TP 81-12 (2017) standard provides a guideline for measuring the shape properties of aggregates using digital image analysis techniques. The standard aims to define a uniform and reliable method for assessing the shape characteristics of aggregates, which are important factors in determining the performance of construction materials such as concrete and asphalt.

The standard describes the use of digital imaging devices and software to capture and analyze images of aggregates. It provides detailed instructions on sample preparation, image acquisition, and image analysis procedures. The standard also specifies the parameters and metrics used to quantify the shape properties of aggregates, such as angularity, sphericity, and texture.

By using digital image analysis, this standard offers advantages over traditional methods of aggregate shape analysis, such as manual measurement and subjective visual inspection. It provides a more objective and repeatable approach, allowing for greater accuracy and consistency in evaluating aggregate shape properties.