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AASHTO-American Association of State Highway and Transportation Officials
American Association of State Highway and Transportation Officials (AASHTO) Standards
The American Association of State Highway and Transportation Officials (AASHTO) is a leading organization that develops and publishes technical standards, specifications, guidelines, and industry resources for the transportation sector.
AASHTO standards cover a wide range of applications, including highway design, road construction, bridge engineering, transportation infrastructure, maintenance, public transit, railways, aviation, and water transportation.
Engineers, contractors, transportation agencies, and industry professionals rely on AASHTO publications to support infrastructure planning, design, construction, inspection, and maintenance while promoting safety, quality, and consistency across transportation projects.
At e-Standards Portal, you can explore AASHTO standards, technical specifications, and related publications to find the technical information you need for your engineering and transportation projects.
AASHTO T 186-23 PDF
This test method covers the determination of early stiffening in hydraulic cement paste.
AASHTO T 188-05 PDF
This method is intended for use in determining the ability of cement containing an air-entraining ag..
AASHTO T 190-22 PDF
This method covers the procedure for testing both treated and untreated laboratory compacted soils o..
AASHTO T 191-14 PDF
This method is intended for determining the in-place density of soils. The apparatus described herei..
AASHTO T 192-23 PDF
This test method covers the determination of the fineness of hydraulic cement by means of the 45-μm ..
AASHTO T 193-22 PDF
This test method covers the determination of the California Bearing Ratio (CBR) of pavement subgrade..
AASHTO T 194-22 PDF
The Wet Combustion method for the determination of soil organic matter is most applicable when it is..
AASHTO T 195-22 PDF
This method covers the determination of the degree of particle coating in an asphalt mix on the basi..
AASHTO T 196M/T 196-23 PDF
This test method covers determination of the air content of freshly mixed concrete containing any ty..
AASHTO T 197M/T 197-23 PDF
This test method covers the determination of the time of setting of concrete, with slump greater tha..