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AASHTO - American Association of State Highway and Transportation Officials: Recent submissions
Now showing items 161-180 of 2524
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Standard Specification for Balanced Mix Design
Abstract: This specification for balanced mix design uses volumetric and/or performance-based/related test results to produce job-mix formulas for asphalt mixtures. This standard specifies minimum performance testing requirements ... -
Standard Practice for Digital Interchange of Geotechnical Data
Abstract: This standard practice requires the standard data transfer protocol for geotechnical data known as Data Interchange for Geotechnical and Geoenvironmental Specialists (DIGGS). The most current version of the DIGGS schema ... -
Standard Practice for Sample Preparation and Polishing of Unbound Aggregates for Dynamic Friction Testing
Abstract: This method covers the sample preparation and polishing of unbound aggregates for dynamic friction testing using a three-wheel polishing device (TWPD). The values stated in SI units are to be regarded as the standard. This ... -
Standard Practice for Emulsified Asphalt Content of Cold Recycled Mixture Designs
Abstract: This standard for mix design evaluation is used to determine the amount and composition of emulsified asphalt and other additives when using cold recycling (CR) of asphalt mixtures, which includes cold in-place recycling ... -
AASHTO LRFD Bridge Design Guide Specifications for GFRP-Reinforced Concrete - 2nd EDITION
Abstract: Please substitute the original pages of text with the enclosed pages, which will remain clearly distinguishable as errata pages once they have been inserted due to the large errata page header. Text in bold italics indicate ... -
Standard Method of Test for Estimating Fatigue Resistance of Asphalt Binders Using the Linear Amplitude Sweep
Abstract: This test method covers the determination of an asphalt binder’s resistance to fatigue damage by means of cyclic loading employing systematic, linearly increasing load amplitudes. The amplitude sweep is conducted using ... -
Standard Practice for Sample Preparation and Polishing of Asphalt Mixture Specimens for Dynamic Friction Testing
Abstract: This method covers the sample preparation and polishing of asphalt mixtures for dynamic friction testing using a three-wheel polishing device (TWPD). This standard is to be used with compacted asphalt mixture slab ... -
Standard Method of Test for Determining the Fracture Energy of Asphalt Mixtures Using the Semicircular Bend Geometry (SCB)
Abstract: This test method covers the determination of the fracture energy (Gf) of asphalt mixtures by means of the semicircular bend geometry (SCB). The method also includes procedures for calculating fracture toughness (KIC) and ... -
Standard Method of Test for Determining the Indirect Tensile Nflex Factor to Assess the Cracking Resistance of Asphalt Mixtures
Abstract: This test method covers the determination of cracking resistance of asphalt mixtures using the indirect tensile (IDT) geometry at 25℃. The Toughness (area beneath the stress-estimated strain data) and Brittleness Slope ... -
Standard Practice for Balanced Design of Asphalt Mixtures
Abstract: This standard practice serves as a framework for balanced design of asphalt mixtures that governs the development of an asphalt mixture job mix formula based on mixture volumetric properties, performance-based/related test ... -
Standard Method of Test for Determining the Plastic Limit and Plasticity Index of Soils
Abstract: The plastic limit of a soil is the lowest moisture content at which the soil remains plastic. The plasticity index of a soil is the range in moisture content, expressed as a percentage of the mass of the oven-dried soil, ... -
Standard Method of Test for Particle Size Analysis of Soils
Abstract: This method describes a procedure for the quantitative determination of the distribution of particle sizes in soils. The following applies to all specified limits in this standard: For the purposes of determining conformance ... -
Standard Method of Test for Sieve Analysis of Fine and Coarse Aggregates
Abstract: This method covers the determination of the particle size distribution of fine and coarse aggregates by sieving. Some specifications for aggregates, which reference this method, contain grading requirements including both ... -
Standard Method of Test for Materials Finer Than 75-μm (No. 200) Sieve in Mineral Aggregates by Washing
Abstract: 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 well as ... -
Standard Method of Test for Organic Impurities in Fine Aggregates for Concrete
Abstract: This test method covers two procedures for an approximate determination of the presence of injurious organic compounds in fine aggregates that are to be used in hydraulic cement mortar or concrete. One procedure uses a ... -
Standard Practice for Sampling Asphalt Mixtures after Compaction (Obtaining Cores)
Abstract: This method describes the process for removal of a core sample of compacted asphalt mixture from a pavement for laboratory testing. Cores may range in diameter from 2 in. to 12 in. This standard does not purport to address ... -
2019 AASHTO SALARY SURVEY - Access to Additional Content; incorporated ERTA: June 2020
Abstract: Facts Questionnaires were sent to all 50 states and 47 states responded, resulting in a 94% response rate. This survey is intended as a tool for human resources administrators and other professionals whose work involves ... -
Standard Method of Test for Asphalt Binder Content of Asphalt Mixtures by the Nuclear Method
Abstract: This procedure covers the quantitative determination of the asphalt binder content of asphalt mixtures by testing a sample with a nuclear gauge that utilizes neutron-thermalization techniques. The values expressed in SI ... -
Standard Method of Test for Frictional Properties of Paved Surfaces Using a Full-Scale Tire
Abstract: This method covers the measurement of the frictional properties of paved surfaces with a specified full-scale automotive tire. This method utilizes a measurement representing the steady-state friction force on a locked ... -
Standard Method of Test for Lightweight Particles in Aggregate
Abstract: This method covers the determination of the percentage of lightweight particles in aggregate by means of sink–float separation in a heavy liquid of suitable specific gravity. The values stated in SI units are to be regarded ...