Aashto material classification9/21/2023 ![]() Purposes", AASHTO Designtation 145-91, Standard Specificationsįor Transportation Materials and Methods of Sampling and Testing.ĪSTM (2010). Of Soils and Soil-Aggregate Mixtures for Highway Construction "Recommended Practice for the Classification GI: AASHTO group index (rounded to the nearestĪmerican Association of State and Highway Transportation Officials In the GI function, either PL or PI must be specified in addition to To obtain the AASHTO group index, use the GI function. This function only calculates the AASHTO group classification. 10, 40, and 200 sieves have been used.įor the plasticity data, one of three following pieces of data If sieve or size data are specified, this function assumes Sieve, the user should specify the sieve size in inches (e.g., If sieve data are specified, for sieves larger than the no. Sieve numbers (sieve) and percent passing Logical variable indicating whether the soilįor the grain-size data, one of three following pieces of data TRUE for metric units (mm), FALSE for English units (in) Logical variable for grain-size distribution: Vector of percent passing in grain-size distribution Vector of grain sizes (in or mm) in distribution ![]() Vector of sieve numbers (according to ASTM D422) AASHTO ( sieve = NA, size = NA, percent = NA, metric = NA, p10 = NA, p40 = NA, p200 = NA, LL = NA, PL = NA, PI = NA, NP = NA ) GI ( p200, LL, PL = NA, PI = NA ) ![]()
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