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  • DENSITY OF ASPHALT CONCRETE

    comparing bulk density to theoretical maximum density(TMD) and the final in-place air voids are estimated by comparing bulk density of laboratory compacted sampler to the TMD. The two methods that have been used to measure bulk density of asphalt mixture are physical measurements of cores and nuclear gage. The nuclear gage

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  • In-Place Density of Asphalt Pavements: Case Study during .

    Create a new account. Are you an ASCE Member? We recommend that you register using the same email address you use to maintain your ASCE Member account.

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  • Asphalt concrete - Wikipedia

    Asphalt concrete is recyclable and is the most widely reused construction material in the world. Very little asphalt concrete — less than 1 percent, according to a survey by the Federal Highway Administration and the National Asphalt Pavement Association conducted annually since 2009 — is actually disposed of in landfills.

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  • | AsphaltPro Magazine | Use Good Compaction to Extend .

    Because in-place density is such an important factor affecting long-term pavement performance, it is a key pay factor for acceptance in most states. The most common minimum in-place density criterion is 92 percent of theoretical maximum specific gravity (Gmm).

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  • Asphalt Mixtures Calculator - Vulcan Materials Company

    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.

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  • FHWA Demonstration Project for Enhanced Durability of .

    Based on prior studies, a 1 percent increase to in -place asphalt pavement density achieved through improved compaction was estimated to improve the fatigue performance of asphalt pavements between 8 and 44 percent and improve rutting resistance by 7 to 66 percent. A percent increase in in1 -place density was estimated to extend the service .

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  • Evaluation of Non-Nuclear Density Gauges for Measuring .

    Evaluation of Non-Nuclear Density Gauges for Measuring In-Place Density of Hot Mix Asphalt. Mark Rose . E.I.T, Graduate Student . and Haifang Wen . PhD, PE, Assistant Professor . Washington State University . Sunil Sharma . PhD, PE, Professor . University of Idaho

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  • Enhanced Durability Through Increased Density

    Enhanced Durability Through Increased Density. Overall Objective. Ultimately, achieving the in-place asphalt pavement density that results in the highest asphalt .

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  • Publications - Materials Manual | WSDOT

    Bulk Specific Gravity and Density of Compacted Hot Mix Asphalt Using Automatic Vacuum Sealing Method. T 335 (PDF 266 KB) FOP for AASHTO for Determining the Percentage of Fracture in Coarse Aggregate. T 355 (PDF 566 KB) In-Place Density of Asphalt Mixtures Using the Nuclear Moisture-Density Gauge. T 413 (PDF 1.2 )

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  • Density of Concrete, Asphalt in 285 units and reference .

    Concrete, Asphalt weighs 2.243 gram per cubic centimeter or 2 243 kilogram per cubic meter, i.e. density of concrete, Asphalt is equal to 2 243 kg/m³. In Imperial or US customary measurement system, the density is equal to 140 pound per cubic foot [lb/ft³], or 1.297 ounce per cubic inch [oz/inch³] .

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  • Hot Mix Asphalt Testing Technician | cttp | University of .

    ARDOT 461: Test Method for In-Place Density and Percent Compaction of Asphalt Concrete Hot Mix Using a Nuclear Gauge Participants who do not pass the Hot Mix Asphalt Testing Technician course by failure of either the written or performance exam will be required to repeat the entire course.

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  • DETERMINING THE IN-PLACE DENSITY AND RELATIVE .

    DETERMINING THE IN-PLACE DENSITY AND RELATIVE COMPACTION OF HOT MIX ASPHALT PAVEMENT USING NUCLEAR GAGES A. SCOPE This test method provides procedures for determining the average in-place density and relative compaction of hot mix asphalt (HMA). It may be applied to HMA having a compacted thickness of at least 0.10 ft.

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  • In-Place Hot-Mix Asphalt Density Estimation Using Ground .

    In-Place Hot-Mix Asphalt Density Estimation Using Ground-Penetrating Radar I. L. Al-Qadi, Z. Leng, S. Lahouar, and J. Baek This research proposes the innovative use of ground-penetrating radar nuclear measurements are usually taken with high spatial spacing.

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  • HOT MIX ASPHALT PAVEMENT DESIGN GUIDE

    Hot mix asphalt may be referred to by several names. In different sections of the state it may also be referred to as bituminous concrete,hot plant mix,asphalt concrete, blacktop or Superpave. Hot mix asphalt is composed of aggregate bound together into a solid mass by asphalt .

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  • Density of Asphalt Concrete - Earthwork/grading .

    Aug 07, 2004 · Depends upon the mix properties and compaction criterion. I commonly use between 2250 kg/m3 (140 lb/ft3) and 2350 kg/m3 (147 lb/ft3) for in-place density (conventional ACP mix) in my neck of the woods. Here we are dealing agg spec gravs of 2.68 for crush product and around 2.60 for natural fines. Oil content is commonly around 6.0% by dry wt .

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  • National Asphalt Pavement Association

    Density is the weight of material per volume. For example pounds per cubic foot. The density of asphalt pavement mixtures does vary depending on mix proportions and the type of aggregate. If you do not know the in-place density of mixes, you must ask your supplier.

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  • Theoretical Maximum Specific Gravity - Pavement Interactive

    In-place Density Measurement. As previously discussed, theoretical maximum specific gravity is needed to calculate air void content; therefore, it is involved in in-place air void determination during HMA pavement construction. In-place air void measurements are used as a measure of compaction (Figure 2).

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  • How much does density matter? | Asphalt magazine

    The normal target in-place density on a "dense" hot-mix asphalt pavement is 92 to 93 percent of Gmm (or 7 to 8 percent air voids). If a pavement has low density (usually defined as less than 92 percent of Gmm), the air voids are interconnected and premature pavement distresses can result.

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  • Enhanced Durability Through Increased In-Place Pavement .

    improve the fatigue performance of asphalt pavements between 8.2 and 43.8%, to improve the rutting resistance by 7.3 to 66.3%, and to extend the service life by conservatively 10%." NCAT Report 16 -02 (2016) Literature Review on connecting in-place density to performance

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  • Aggregate Base Density Data - Earthwork/grading .

    Jun 09, 2005 · Dividing TONS by (2) to get CY assumes that the in place aggregate will have a density of 148 lb/ft^3. However, a differential of a couple of units (148 vs 165) makes a big difference in cost on big projects. Therefore I thought that somebody must have a .

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  • WSDOT Errata to FOP for AASHTO T 355

    In-Place Density of Asphalt Mixtures by Nuclear Method T 355 WSDOT Materials Manual M 46-01.32 Page 3 of 14 April 2019 IN-PLACE DENSITY WAQTC FOP AASHTO T 355 (18) 55_T355_short_18_errata E&B/ID 22-1 Pub. October 2018 IN-PLACE DENSITY OF ASPHALT MIXTURES BY NUCLEAR METHOD FOP FOR AASHTO T 355 Scope

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  • Pavement Manual: Hot-Mix Asphalt Pavement Mixtures

    Anchor: #i1013899 Section 6: Hot-Mix Asphalt Pavement Mixtures Anchor: #i1013905 6.1 General. Hot-mix asphalt (HMA) is a generic term that includes many different types of mixtures of aggregate and asphalt cement (binder) produced at elevated temperatures (generally between 300-350ºF) in an asphalt .

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  • How to Calculate Asphalt Weight Per Yard | Home Guides .

    Multiply the volume by the density to calculate asphalt weight per cubic yard. NAPA estimates an average asphalt density of 145 pounds per cubic foot, or 3,915 pounds per cubic yard.

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  • Density and Percent Compaction of HMA Pavement by the .

    Density and Percent Compaction of HMA Pavement by the Nuclear Method (This procedure is based upon AASHTO T 355-15. AASHTO T 355-15 or any subsequent revision may not be used in place of this procedure.) 1. SCOPE 1.1 This method covers the determination of the total density of hot mix asphalt pavement in- place by use of nuclear gauges.

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  • Enhanced Durability Through Increased In-Place Pavement .

    Increased In-Place Pavement Density Assumption – Pavement density can be increased with a minimum of additional cost Long-Term Objective – States will increase their in-place asphalt pavement density requirements resulting in increased pavement life. 6

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  • FHWA's Increased In-Place Density Initiative - Asphalt .

    FHWA's Increased In-Place Density Initiative - Asphalt Institute | Serving the needs of liquid asphalt manufacturers and suppliers worldwide since 1919. The Federal Highway Administration (FHWA) and Asphalt Institute presented an Enhanced Durability through Increased In-Place Pavement Density Workshop to ten states as shown below. This one-day .

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  • FIELD METHOD FOR DETERMINING IN-PLACE DENSITY OF .

    FIELD METHOD FOR DETERMINING IN-PLACE DENSITY OF SOILS AND BASE MATERIALS TXDOT DESIGNATION: TEX-115-E CONSTRUCTION DIVISION 4 – 15 LAST REVIEWED: SEPTEMBER 2014 Note 9—Where the material contains chemically bound water (i.e., gypsum) and other hydrogen atoms, such as in asphalt, iron ore, coal, mica and vegetation, use of nuclear gauges may not provide .

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  • Calculate Asphalt Millings | cubic yards / Tons

    Type in inches and feet of your project and calculate the estimated amount of Recycled Materials in cubic yards, cubic feet and Tons, that your need for your project. The Density of Asphalt Millings: 2,410 lb/yd³ or 1.21 t/yd³ or 0.8 yd³/t

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  • IN-PLACE HOT MIX ASPHALT DENSITY ESTIMATION USING .

    radar (GPR) to measure in-situ asphalt mixture density accurately, continuously, and rapidly. The prediction of asphalt mixture density using GPR is based on the fact that the dielectric constant of an asphalt mixture, which can be measured by GPR, is dependent on the dielectric and volumetric properties of its components.

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  • How to Manage Asphalt Density - forconstructionpros

    Jan 29, 2019 · "In most states, contractors are paid incentive or disincentive (financial penalties), based on the final, in-place density of asphalt on the roadway.

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  • Asphalt Paving Operation - Purdue Engineering

    Why Evaluate Density of Hot Asphalt Concrete . . Evaluation of In-Place Density . An evaluation of the in-place material is necessary to ensure that a satisfactory density is obtained. Most of the time, a nuclear gage is used to estimate the density. . the productivity of the whole asphalt paving operation could be increased by adding one .

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  • Optimizing In-Place Density of Asphalt Pavements During .

    place density of asphalt pavement greatly affects the lifespan of the pavement. It is also a key factor in preventing major pavement distresses, such as rutting, cracking, stripping (due to water damage) and aging. This research project aims to evaluate and compare the effectiveness of different compaction, delivery, and mix design .

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  • Enhanced Durability of Asphalt Pavements Through Increased .

    Enhanced Durability of Asphalt Pavements Through Increased In - Place Density PAPA Annual Conference. 18 January 2017

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  • Asphalt Pavement Construction - Asphalt Institute

    At one time it was thought that a prime coat was an essential element of good pavement construction. However, in recent years some engineers have eliminated the use of a prime, especially when asphalt layer(s) (surface and/or base) is 4 inches or more in thickness.

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  • Improving pavement density | Asphalt magazine

    Laboratory testing based on a joint Asphalt Institute and Kentucky Transportation Center study found that increasing the pavement density from 92 to 93 percent of the maximum theoretical density (or 7-8 percent air voids) could improve the pavement fatigue life by 10 percent.

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  • Increasing In-Place Densities to Improve the Performance .

    specs are met for density • Must be careful when adding asphalt cement to lower air voids since this may result in rutting • This resulted in major rutting prior to Superpave • Superpave placed emphasis on controlling volumetrics during construction and reduced the amount of projects adding additional asphalt to reduce in-place air voids 17

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  • Standard Test Method for Density of Bituminous Concrete in .

    3.1 The test method described is useful as a rapid, nondestructive technique for determining the in-place density of compacted bituminous mixtures. 3.2 With proper calibration and confirmation testing, the test method is suitable for quality control and acceptance testing of compacted bituminous concrete.

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  • What is the unit weight of asphalt? How do you figure out .

    Feb 29, 2016 · If you know the specific gravity, you can calculate the weight per volume by weight. Below is the weight per cubic meter of each asphalt mixture. * About 2.5 tons of dense grain asphalt mixture * Fine particle size asphalt mixture About 2.4 tons *.

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  • WSDOT Errata to FOP for AASHTO T 355

    In-Place Density of Asphalt Mixtures by Nuclear Method T 355 WSDOT Materials Manual M 46-01.32 Page 3 of 14 April 2019 IN-PLACE DENSITY WAQTC FOP AASHTO T 355 (18) 55_T355_short_18_errata E&B/ID 22-1 Pub. October 2018 IN-PLACE DENSITY OF ASPHALT MIXTURES BY NUCLEAR METHOD FOP FOR AASHTO T 355 Scope

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  • ASTM D6938 - 17a Standard Test Methods for In-Place .

    D6938-17a Standard Test Methods for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth) in-place density~ mass per unit volume~ water content~ nuclear gages~ backscattering~ air-gap ratio~ direct transmission method~

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