درباره ما
AASHTO - American Association of State Highway and Transportation Officials: Recent submissions
Now showing items 341-360 of 2524
-
English -- Standard Method of Test for Comparative Qualitative Corrosion Characterization of Uncoated Chromium-Alloyed Steel Bars Used for Concrete Reinforcement (Tombstone Test)
Abstract: Scope: This test method, the tombstone test, provides a procedure for evaluating and comparing the relative corrosion resistance of different types of steel reinforcement. This test is designed for assessing the corrosion ... -
English -- PRACTITIONER’S HANDBOOK ADDRESSING AIR QUALITY ISSUES IN THE NEPA PROCESS FOR HIGHWAY PROJECTS - Revision 1
Abstract: Scope: Overview This Handbook is intended to assist practitioners in addressing air quality issues, including transportation conformity requirements, as part of the National Environmental Policy Act (NEPA) process for ... -
English -- Standard Practice for Determining Pavement Deformation Parameters and Cross Slope from Collected Transverse Profiles
Abstract: Scope: This practice outlines a method for deriving pavement deformation parameters such as rut depth and cross slope in pavement surfaces utilizing a transverse profile. Detailed specifications are not included for equipment ... -
English -- Standard Method of Test for Flexural Strength of Concrete (Using Simple Beam with Third- Point Loading)
Abstract: Scope: This test method covers determination of the flexural strength of concrete by the use of a simple beam with third-point loading. The values stated in SI units or inch-pound units are to be regarded separately as ... -
English -- Standard Method of Test for Mechanical Testing of Steel Products
Abstract: Scope: These test methods cover procedures and definitions for the mechanical testing of steel, stainless steels, and related alloys. The various mechanical tests herein described are used to determine properties required ... -
English -- Standard Specification for Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe
Abstract: Scope: This specification covers reinforced concrete pipe intended to be used for the conveyance of sewage, industrial wastes, and storm water, and for the construction of culverts. A complete metric companion to M 170 has ... -
English -- Standard Method of Test for Characterization of the Air-Void System of Freshly Mixed Concrete by the Sequential Pressure Method
Abstract: Scope: This method covers determination of the air content and system air metric (SAM) number of freshly mixed concrete from observation of the change in volume of concrete with a sequential change in test pressure. This ... -
English -- Standard Specifications for Transportation Materials and Methods of Sampling and Testing and AASHTO Provisional Standards Part 2: Tests - 2017 Edition
Abstract: Scope: This test method covers determination of the amount of material finer than a 75-μm (No. 200) sieve in aggregate by washing. Clay particles and other aggregate particles that are dispersed by the wash water, as ... -
English -- Standard Practice for Continuous Thermal Profile of Asphalt Mixture Construction
Abstract: Scope: This work shall consist of continuous thermal profiling of the asphalt mat temperature immediately behind the trailing edge of the paver screed plate during placement operations. This system includes a display that ... -
English -- Standard Specification for Corrugated Sheet Steel Beams for Highway Guardrail
Abstract: Scope: This specification covers corrugated sheet steel prepared for use as beams in highway guardrails. The values stated in SI units are to be regarded as the standard. -
English -- Standard Method of Test for Flash and Fire Points by Cleveland Open Cup
Abstract: Scope: This method covers the procedure for the determination of flash point of asphalt binder by the Cleveland open-cup apparatus. This test method is applicable to asphalt binder with flash point between 80°C ... -
English -- Standard Specification for Uncoated, Corrosion-Resistant, Deformed and Plain Chromium Alloyed, Billet-Steel Bars for Concrete Reinforcement and Dowels
Abstract: Scope: This specification covers uncoated, corrosion-resistant, deformed and plain chromium alloyed, billet-steel concrete reinforcement and dowel bars in cut lengths or coils (Notes 1 and 2). The standard sizes and ... -
English -- Standard Specification for Performance-Graded Hot-Poured Asphalt Crack Sealant
Abstract: Scope: This specification covers hot-poured asphalt crack sealant graded by performance. Upon grading for performance, the hot-poured asphalt crack sealant will be assigned a sealant grade (SG) designation (e.g., SG 52-16). ... -
English -- Standard Practice for Selection and Use of Emulsified Asphalts
Abstract: Scope: This standard provides recommendations on selecting the proper grade and type of emulsified asphalt for various transportation uses. Emulsified asphalt must be selected for the proper application. This standard does ... -
English -- LRFD Bridge Construction Specifications - Fourth Edition
Abstract: Scope: PREFACE Units The AASHTO LRFD Bridge Construction Specifications, Fourth Edition, uses U.S. Customary units only. Per a decision by the subcommittee in 2009, SI units will no longer be included in this edition or ... -
English -- The Manual for Bridge Evaluation - 3rd Edition
Abstract: Scope: The Manual has been divided into eight Sections, with each Section representing a distinct phase of an overall bridge inspection and evaluation program. • Section 1—Purpose, scope, applicability, inspection ... -
English -- Standard Specification for Smooth-Tread Standard Tire for Special-Purpose Pavement Frictional-Property Tests
Abstract: Scope: This specification covers the general requirements for the smooth-tread standard tire for pavement testing. The tire covered by this specification is intended for evaluation of tire-pavement friction such as that ... -
English -- STANDARD SPECIFICATIONS for TRANSPORTATION MATERIALS and METHODS OF SAMPLING AND TESTING and PROVISIONAL STANDARDS: PART 2 - 2018 Edition
Abstract: Scope: This test method covers determination of the amount of material finer than a 75-μm (No. 200) sieve in aggregate by washing. Clay particles and other aggregate particles that are dispersed by the wash water, as ... -
English -- Standard Specification for Materials for Aggregate and Soil–Aggregate Subbase, Base, and Surface Courses
Abstract: Scope: This specification covers the quality and grading of sand–clay mixtures; gravel, stone, or slag screenings; or sand, crusher run coarse aggregate consisting of gravel, crushed stone, or slag with or without ... -
English -- Standard Practice for Collecting the Transverse Pavement Profile
Abstract: Scope: This practice outlines a method for collecting pavement transverse profile, including its relationship to a level horizontal reference in pavement surfaces utilizing automated measurement devices. The profile can ...