| Feature | AASHTO T182 | ASTM D2216 | |--------|-------------|-------------| | | Highway and transportation projects | General geotechnical and environmental | | Specimen Size | Specifies minimum masses for different max particle sizes | Similar but with slightly different mass tables | | Drying Temperature | 110 ± 5°C for most soils | 110 ± 5°C (identical) | | Special Cases | Includes organic soils and gypsum (lower temp of 60°C) | Includes guidance for microwave drying as alternative | | Reporting Units | Percent to nearest 0.1% or 1% depending on use | Percent with similar precision |
The is more than a file—it is a tool for quality assurance, legal compliance, and engineering integrity. By understanding its procedure, avoiding common mistakes, accessing it legally, and integrating it into your laboratory workflow, you ensure that every moisture content value you report is accurate, repeatable, and defensible.
| Error | Consequence | Solution | |-------|-------------|----------| | | Non-representative results, especially with gravel | Follow minimum mass table exactly | | Oven overcrowding | Uneven drying, prolonged time | Leave space between containers | | Not covering the container during cooling | Absorption of atmospheric moisture, causing lower water content | Always use lids or a desiccator | | Drying organic or gypsum soil at 110°C | Oxidation of organic matter or loss of crystal water → falsely high water content | Dry at 60°C | | Assuming constant mass without verification | Partial drying leads to under-reported water content | Perform check weighing after 2 more hours |
Thanks in advance.
: If the observed coating is less than 95%, the aggregate-bitumen combination may be deemed "moisture-susceptible." : If a mixture fails, engineers may recommend anti-stripping agents
Here is a breakdown of the exact procedure as outlined in the official AASHTO T182 standard. Follow these steps precisely to achieve repeatable, accurate results.
Use the formula: [ w = \fracM_1 - M_2M_2 - M_c \times 100 ] aashto t182 pdf
Where:
Before I purchase, does anyone know if the procedure changed significantly from the 2018 to 2023 version? Also open to borrowing a scan if you have a technical library subscription.
: After the immersion period, the sample is visually inspected while still underwater. The technician estimates the percentage of the aggregate surface that remains coated with bitumen. 3. Significance and Results | Feature | AASHTO T182 | ASTM D2216
(Standard Method of Test for Amount of Material Finer Than No. 200 Sieve) is the go-to standard for wash sieving. Unlike dry sieving, this method uses water to wash fines through a No. 200 sieve, ensuring you get an accurate measurement of silt and clay content.
The AASHTO T182 PDF is a critical resource for the construction industry. The standard provides guidelines for sampling and testing of soil and aggregate materials, which helps to ensure the quality and safety of infrastructure projects. By understanding the AASHTO T182 standard, construction professionals can ensure that materials meet the required specifications, which helps to prevent costly repairs and maintenance. The standard is widely available in PDF format, making it easy to access and use.
The test involves a specific sequence of coating, curing, and soaking to simulate harsh environmental conditions: : If the observed coating is less than