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asphalt binder courseasphalt compactor

Asphalt Paving Method Statement – Method Statement HQ

asphalt binder course asphalt base course 92 - 97% aggregate 3 - 8% binder • Asphalt • Macadams Asphalt compaction BAO1e-11/03. Asphalt compaction mix design gravel low stone content small max. ... Asphalt base course Asphalt Compaction Test Methods core test nuclear gauge

Asphalt Mixtures Calculator - Vulcan Materials Company

Wearing course Binder course Asphalt base course Frost blanket layer Thickness of frost blanket layer-31 41 51 33 43 53 27 37 47 57 25 35 45 55 Fig. 90 Examples for road construction with asphalt pavement acc. to RStO A2 Mix types and layer thicknesses When designing asphalt layers one must consider the ratio of layer thickness and biggest grain.

Compaction - Pavement Interactive

Apply the tack coat material at the rate of 0.3 to 0.6 lit/ sq.m at the temperature not exceeding 54 °C above the binder and at the area where there is a joint with existing asphalt surface. Cure the surface for the period as per manufacturer's recommendations until a tacky surface is visible.

GENERAL ASPHALT AND CONCRETE TERMS AND DEFINITIONS

PG Asphalt Binder Grading AASHTO M320 Per Supplier QC Plan or 24,000 tons (22,000 Mg) of HMA per Subsection 450.65F(1) See Subsection 450.65F(1) See Subsection 450.65F(1) Random AASHTO T40 Aggregate Gradation AASHTO T27 Per QC Plan Per QC Plan At HMA Plant Per QC Plan Random AASHTO T2 PG Asphalt Binder …

Mixing and Compaction Temperatures of Asphalt Binders in ...

Vb = Volume of asphalt binder Vba = Volume of absorbed asphalt binder Vsb = Volume of mineral aggregate (by bulk specific gravity) Vse = Volume of mineral aggregate (by effective specific gravity) Figure 1. Components of a Compacted HMA Specimen (2) EFFECTS OF RE-HEATING AND COMPACTION TEMPERATURE ON HOT MIX ASPHALT VOLUMETRICS Michael H. Huner ...

(PDF) Method Statement - ASPHALTIC CONCRETE WORKS

Asphalt Compaction Australian Asphalt Pavement Association – 2010 5 Table 2 Typical temperatures for placing and compacting of asphalt containing various binders Binder Class Temperature (°C)1 Softening Point (1200 Pa.s) Minimum for final rolling (100 Pa.s) Minimum for effective compaction2 (10 Pa.s) Maximum for Compaction (Cohesion)

Asphalt Binder - an overview | ScienceDirect Topics

Pre-compaction measurements are the inches of asphalt laid on your driveway prior to compaction. Post compaction is the measurement of the asphalt after being rolled with a vibratory roller. For example 2" of asphalt pre-compaction would be 1.5" after compaction.Vibration is the conventional method of dynamic compaction …

Asphalt Pavement Construction | Asphalt Institute

Rev. 12/14/07 Hot-Mix Asphalt Binder & Surface Course Sheet 3 of 14 c. Areas of deep spalling and heavy disintegration shall be cleaned of all loose and unsound material with pneumatic tools or other …

Laboratory Mixing and Compaction Temperatures for …

wearing course Asphalt base course Linear load 10 - 30 kg/cm Compaction effect Ground contact and kneeding effect Important machine characteristics • Wheel load • Tire infl ation pressure Application • Surface treatment • Initial compaction of sensitive asphalt layers • Surface sealing on wearing courses Asphalt binder course Sand ...

Section 450 - HMA QA Spec No Pay Adjustment - Final

Vb = Volume of asphalt binder Vba = Volume of absorbed asphalt binder Vsb = Volume of mineral aggregate (by bulk specific gravity) Vse = Volume of mineral aggregate (by effective specific gravity) Figure 1. Components of a Compacted HMA Specimen (2) EFFECTS OF RE-HEATING AND COMPACTION TEMPERATURE ON HOT MIX ASPHALT …

Basic principles of Asphalt Compaction - MAFIADOC

Asphalt Mixtures Calculator. Enter the width, length and thickness, then hit the "Calculate" button to calculate your estimate. You may also revise the default density value of 145 lbs/cubic ft. Actual densities may vary depending on the components of the mix.

EFFECTS OF RE-HEATING AND COMPACTION TEMPERATURE …

to make check tests of the asphalt received on the Project site, and if the asphalt is not in accordance with the certified analysis, he may reject the material. The asphalt required by these Specifications shall conform to the requirements of The Asphalt Institute for the type and grade shown below: Asphalt for Seal Coating CRS-2 or CRS-2P

ASPHALT COMPACTION OPERATIONS

PG Asphalt Binder Grading AASHTO M320 Per Supplier QC Plan or 24,000 tons (22,000 Mg) of HMA per Subsection 450.65F(1) See Subsection 450.65F(1) See Subsection 450.65F(1) Random AASHTO T40 Aggregate Gradation AASHTO T27 Per QC Plan Per QC Plan At HMA Plant Per QC Plan Random AASHTO T2 PG Asphalt Binder Content AASHTO T164 or AASHTO T308

ASPHALT COMPACTION

75 μm sieve, asphalt cement content, air voids, or compaction. Binder Course means a hot mix asphalt (HMA) course between a surface course and either a base course or stabilized base course, an existing pavement, or another HMA binder course. CCIL …

Frequently Asked Questions - Asphalt Engineering

G2 Gyratory Compactor. The Superpave G2 Gyratory Compactor compacts asphalt specimens. In addition, the Superpave is compatible with the compaction of soils, emulsion-based mixes, and roller compacted concrete mixes. The unit also compacts at a constant consolidation pressure, constant angle of gyration, and a fixed speed gyration.

Determining Lab Mixing and Compaction ... - Asphalt Institute

When 16 to 25% RAP is used: "The selected binder grade for the new asphalt is one grade lower for both the high and low temperature stiffness than the binder grade required for a asphalt. For example, if the specified binder grade for the mix is a PG 64-22, the required grade for the recycled mix would be a PG 58-28".

Unmodified PG Asphalt Binders

pavement applications either by itself or mixed with liquid asphalt binder. Different types and sizes of aggregate are mixed with liquid asphalt to make the hot mix asphalt used for paving. Other types of aggregate, such as 21A stone, are utilized for creating a sound sub-base underneath the various courses of asphalt in a pavement structure.

Compaction - Hawaii Asphalt Paving Industry

The low shear viscosities are plotted versus temperature and mixing and compaction temperature ranges are determined at target values of 3.0 Pa·s and 6.0 Pa·s, respectively. ⠢ Takes into account the shear rate dependency of modified asphalt binders ⠢ Testing is simple to conduct ⠢ Results in lower mixing and compaction ...

EFFECTS OF RE-HEATING AND COMPACTION TEMPERATURE …

9.1.8 Placing and compaction of Binder bituminous layer will be carried out in accordance with T.S. 9.1.9 Asphalt lay down will proc eeds from start to end direction along the Road.

Factors Affecting Compaction - Pavement Interactive

Compaction . Compaction is the process by which the volume of air in an HMA mixture is reduced by using external forces to reorient the constituent aggregate particles into a more closely spaced arrangement. This reduction of air volume produces a corresponding increase in HMA density (Roberts et al., 1996). ... Because asphalt binder tends to ...

CONSTRUCTION INSPECTOR'S CHECKLIST FOR HOT- MIX …

The low shear viscosities are plotted versus temperature and mixing and compaction temperature ranges are determined at target values of 3.0 Pa·s and 6.0 Pa·s, respectively. ⠢ Takes into account the shear rate dependency of modified asphalt binders ⠢ Testing is simple to conduct ⠢ Results in lower mixing and compaction ...

STANDARD CONSTRUCTION SPECIFICATIONS FOR ASPHALT …

Asphalt Institute Technical Advisory Committee. Approved 7 December 2016. The Asphalt Institute recommends that, for unmodified asphalt binders, the laboratory mixing and compaction temperatures should be determined where the viscosity-temperature line crosses the viscosity ranges of 0.17 ± 0.02 Pa-s (mixing temperature range) and 0.28 ± 0.03 Pa-s (compaction temperature range).