AASHTO T 190-14 (2018) PDF Download

AASHTO T 190-14 (2018) is a standard method of testing the resistance R-value and expansion pressure of compacted soils. The purpose of this standard is to determine the performance of laboratory compacted soils or aggregates when placed in the base, subbase, or subgrade of a road under traffic conditions.

The method involves the use of the stabilometer and expansion pressure devices to measure the resistance and expansion characteristics of the compacted soil. This testing is important as it provides an indication of the soil's ability to withstand the stresses and pressures that occur during traffic loading.

The standard covers both treated and untreated compacted soils or aggregates, ensuring that the testing procedure is applicable to a wide range of materials commonly used in road construction. By adhering to this standard, engineers and researchers can obtain accurate and consistent results, enabling them to evaluate the performance and suitability of different soils for road applications.