Report No. CDOT-DTD-R-2006-12 Final Report HOT MIX ASPHALT VOIDS ACCEPTANCE REVIEW OF QC/QA DATA 2000 THROUGH 2004 Eric Chavez, CDOT Pavement Design UnitThe contents of this report reflect the views of the

Hence, the objective of compaction is to produce a dense mass with high unit weight. Again, the choice is between achieving a high density at the time of 

2007年1月12日 — Comparison of WSDOT Current In-Place Density Average and Standard Hot Mix Asphalt (HMA) is the major paving material for WSDOT 

average density of hot mix asphalt. Asphalt Pavement Construction Asphalt Institute. Construction. Another way to look at it is this: In a 6000 lb. batch of mix, 

The purpose of this study was to evaluate the effect of Hot Mix Asphalt (HMA) density on the overall mixture performance in terms of fatigue cracking and rutting.

Density of Hot Mix Asphalt (HMA). Specimens by AASHTO PP 28 based on the average bulk specific gravity from two gyratory specimens and the MSG for the 

2400kg per cubic metre is a good generic density. Sorry if you use the imperical system, I'm sure you can convert it easy enough. In real life though, it's a good idea to calibrate this figure based on tonnage used, average

2015/04/09 · So, Hot Load 13.2 mm aggregate Hot Mix Asphalt or simply HL3 Hot Mix Asphalt is the most commonly used asphalt mix. The difference between HL3 and HL3A is simply the amount of sand in the mix. The more sand in the mix, the softer and smoother the driveway will be.

to achieve adequate density during the placement of hot mix asphalt concrete. The report has been divided into five parts as follows: 1. Basic concepts of compaction 2. Relationship of compaction to expected performance of HMAC 3. Factors influencing compaction of HMAC 4. Compaction control procedures 5.

Density. − the mass of the material that occupies a certain volume. • Compaction. − the process through which the asphalt mix is compressed and reduced in 

This is because as the fine RCA increases, the density will be decreased due to higher Therefore, utilizing RCA in hot mix asphalt (HMA) mixtures affected the is the wheel tracking rate, is the mean value of , is the width of wheel's contact 

AASHTO T 166; Bulk Specific Gravity of Compacted Hot Mix Asphalt (HMA) to AASHTO T 331 test method for Bulk Specific Gravity and Density of Compacted Hot Mix Asphalt equally spaced locations and average the four measurements.

They related the problem to a differential in temperature of the hot mix asphalt (HMA) mass in the trucks developed in transport from the HMA manufacturing facility 

Bulk density is the mass per unit volume of the compacted mix (expressed in tonnes per cubic metre) where the volume is the gross volume including the total air 

This difference in density could range from 2 to 12 lbs per cubic ft but the average was about 6 to 7 lbs per cubic ft (or 4 to 5 percentage points).

differences in density determination of dense-graded hot mix asphalt performed to see if the results obtained are within the average standards utilised.

The density produced during the mix design should not be used as the reference density since the laboratory properties will be somewhat different from test results on plant produced materials.Sometimes aggregates break down during mix production,creating an increase in dust,thus altering the properties of the compacted asphalt mixture.

Hence, the objective of compaction is to produce a dense mass with high unit weight. Again, the choice is between achieving a high density at the time of 

Keep in mind that density is a relative term, compared to a target density of either lab compacted mix, a maximum theoretical density, or a control strip density. Procedures for using the three methods are spelled out on Page 7-17 to 7-21 of the new MS-22 and Page 241 of the old MS-22.

Asphalt Rubber Methods of adding rubber to asphalt – Wet Process – rubber is added to the liquid asphalt binder before being mixed at the hot mix asphalt plant (i.e., rubber is wet before mixing) – Dry Process – rubber is added at the same time the asphalt and aggregate are mixed (i.e., rubber is dry before mixing)

What is the maximum theoretical density of asphalt?

The hot mix asphalt concrete shall comprise a mixture of mineral aggregate Specific Gravity and Density of Bituminous Paving Mixtures .15. ASTM D For new construction as well as paving atop a milled surface, the average compacted 

The density produced during the mix design should not be used as the reference density since the laboratory properties will be somewhat different from test results on plant produced materials.Sometimes aggregates break down during mix production,creating an increase in dust,thus altering the properties of the compacted asphalt mixture.

The specific gravity at 15.6 ° C (60 ° F) is commonly used when buying/selling asphalt cements. A typical specific gravity for asphalt is around 1.03. Related Tests. AASHTO T 228 and ASTM D 70: Specific Gravity and Density of Semi-Solid Bituminous Materials

Characteristics of Hot Mix Asphalt on Standard ST RK 1225. Indicator Measurement Unit Test Method Standard Requirements Value Average Density g/cm3 ST RK 1218 -