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Volumetric Design for Hot-Mix Asphalt (HMA) 1. Scope. 1.1 This standard for mix design evaluation uses aggregate and mixture properties to produce a hot-mix asphalt (HMA) job-mix formula. The mix design is based on the volumetric properties of the HMA in
For example, if the compacted density of an asphalt concrete specimen is 95.3% of the theoretical maximum specific gravity, the air void content is 100 â 95.3 = 4.7%.
Simplistically, a hot-mix asphalt (HMA) material comprises three material components: • Air Voids • Mineral Aggregate • Bituminous Binder In production, the latter two materials are
Volumetric of HMA • Asphalt viscosity • Mix temperature – Calculate the percent absorbed asphalt for the mixture Volumetric Analysis of HMA Mixtures 42 Example
This manual includes chapters on all the primary aspects of hot-mix asphalt (HMA) mix design: â ¢ General background on HMA mixtures and pavements â ¢ Asphalt binders â
Calculations Where: A = mass of dry sample D = Pycnometer and water mass E = Pycnometer, mixture, water mass A D E A G mm Calculating G mm Given: A=1204.6 g
Example: Given: Gmm = 2.540 Gmb = 2. 3.3% 2.. ⎟ × = ⎠ ⎞ ⎜ ⎝ ⎛ VTM = − Voids in the Mineral Aggregate (VMA) ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ = − G G P sb VMA 100 mb
the hot-mix asphalt (HMA) mix design process relate better to actual field performance. Also, a number of agencies have been concerned with the lack of a proof test for
This section defines the purpose of each pavement layer and defines traffic levels. Subsequent sections dicuss the selection process for specific HMA mix type
calculations and testing. 1. Theoretical Maximum Specific Gravity of the Mixture (Gmm) (AASHTO T 209) a. Test Method: The theoretical maximum specific gravity (Gmm) of
102 APPENDIX B Proposed Standard Practice for Superpave Volumetric Design for Hot Mix Asphalt (HMA) AASHTO Designation: R 35-04 American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249
and the asphalt binder can be modified. HMA could be made from new or recycled material. Examples of recycled asphalt include, but are not limited to reclaimed asphalt pavement and cold in-place recycling. The Department uses one type of dense graded HMA: HMA-Type A. 631.3 Rubberized Hot Mixed Asphalt Gap Graded
SECTION 1: PROCEDURES MANUAL FOR HMA MIX DESIGN PROCESSING HOT MIX ASPHALT (HMA) MIX DESIGN LABORATORY QUALIFICATIONS 2 (Revised: 01/21/2020) A copy of the AMRL inspection report and any responses to deficiencies are to be sent to: Michigan Department of Transportation Construction Field Services Bituminous Mix
Superpave Volumetric Mix Design. Dec. 28, 2000. Superpave is an improved system for specifying hot-mix asphalt (HMA) component materials, HMA mix design and analysis, and pavement performance prediction. Implementation of Superpave, when fully developed, should minimize or eliminate rutting, fatigue cracking, and low
4 Chart 1: Recommended Mixes for Normal HMA Applications (Proposed compaction levels based on NCHRP 9-9 levels 4% Per Voids) Low Volume Design Level Recommended Aggregate Size Binder Type Compaction Level Compacted Thickness Surface 9.5mm PG64- gyrations 1.5” Base 12.5mm PG64- gyrations 2” 19mm PG64-
Title: Hot Mix Asphalt (HMA) Volumetric Properties 1 Hot Mix Asphalt (HMA) Volumetric Properties 2 HMA Volumetric Terms. Example Calculations. Mixed with 5 asphalt cement ; Gmm 2.535 ; Gb 1.03; 2. 770. 19 Voids in Mineral Aggregate. VMA is an indication of film thickness on
The volumetric proportions of the asphalt binder and aggregate components of an asphalt mixture and their relationship to the other components are considered. The mass of the components and their specific gravities are used to determine the volumes of each of the components in the mix. The volumetric properties of a compacted HMA paving mixture
Example 1: 10 % RAP with 6.0% asphalt based on 10 samples tested and averaged, aggregate contribution is 9.4% and asphalt contribution is 0.6% of total mix. Example 2: 5% RAS with 20% asphalt content based on 10 samples tested and averaged, aggregate contribution is 4.0% and
The Department has established procedures for the design and control of hot-mix asphalt (HMA) based on the Superpave Asphalt Mixture Design and Analysis System. Superpave the Superpave volumetric mix design procedures, and the additional mix testing and analysis. Whenever the Contractor’s gradations and calculations do not check, the
calculations and testing. 1. Theoretical Maximum Specific Gravity of the Mixture (Gmm) (AASHTO T 209) a. Test Method: The theoretical maximum specific gravity (Gmm) of uncompacted (loose) Hot-Mix Asphalt (HMA) mixtures for volumetric mix design and production Quality Control (QC) is to be performed according to the most current
the hot-mix asphalt (HMA) mix design process relate better to actual field performance. Also, a number of agencies have been concerned with the lack of a proof test for validating the volumetric properties. Many have expressed a desire for a truly simple mix test that could be employed at the HMA plant lab
Volumetric of HMA • Asphalt viscosity • Mix temperature – Calculate the percent absorbed asphalt for the mixture Volumetric Analysis of HMA Mixtures 42 Example Problem - Volumetric Equations • Summary G sb = 2.705 G se =
HMA Pavement Mix Type Selection Guide Introduction Background Our nation’s roadway system is critical to our economy. Hot Mix Asphalt (HMA) pavements consti-tute a large part of our nation\'s surfaced roads. HMA pavements serve in a multitude of traffic environ-mental conditions, demanding that the materials