hot mix asphalt strain gages

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Oct 02, 2018 · Texas Asphalt Paving Association, Click on: Hot Mix Asphalt Center at the bottom of the page for Asphalt Level 1B and Soils /Base 102. ... Nuclear Gauge Safety Training Online Thanks ...

ASTM International - Journal of Testing and Evaluation

Validation Of Initial and Failure Stiffness Definitions in Flexure Fatigue Test for Hot Mix Asphalt. Calculation of Stress Fields Near Notch Roots in Real Life Structures Subjected to In-Plane and Out-of-Plane Deformations. Measurement of Very Low Creep Strains: A Review. Instrumented Impact Tests: Effects of Machine Variables and Specimen Position

How much does density matter?

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.

Innovation at Intermat

May 11, 2018 · The mechanized Cepia wheelbarrow from Fayat aids workers spreading hot-mix asphalt (HMA) and aggregates. The concept is simple—a small engine powers a hydrostatic drive. No special operator training or electronic controls are necessary, and the unit has only three control options: opening a chute, propelling forward and backward, and adjusting heigh

Strain Gauges and Signal Conditioning

The strain gauge has been in use for many years and is the fundamental sensing element for many types of sensors, including pressure sensors, load cells, torque sensors, position sensors, etc. The majority of strain gauges are foil types, available in a wide choice of shapes and sizes to suit a variety of applications.


Sixteen asphalt strain gauges were placed at the bottom of the hot-mix asphalt (HMA) layer of these structures. Six rounds of measurements were taken to determine the variability of the strain gauges.

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Mechanical characterization of a bituminous mix under

Mechanical characterization of a bituminous mix under quasi-static and high-strain rate loading ... It was observed that the mechanical properties of the hot mix asphalt (HMA) changed significantly under high-strain rate testing. ... Strain gages mounted diametrically opposite on the transmitted bar recorded strain time history of the bar. Post ...

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Asphalt safety focus on handling

At the Hot Mix Plant Drivers and plant workers should also be aware of the potential hazards at the hot mix plant. A bad connection in a line can cause asphalt to spray out and burn someone. Pumping a load into the wrong storage tank may result in product contamination, causing the resultant mixture to become degraded.


GEOKON, provides vibrating wire strain gauges and offers a custom design service for all your geotechnical monitoring and engineering needs.

Difference between in situ flexible pavement measured and

One of the 12 instrumented sections of the Virginia Smart Road was used to compare measured vertical compressive stress and measured transverse horizontal strain under the hot-mix asphalt (HMA) layer induced by a 25.8 kN (5.8 kip) single tire and a 39.5 kN (8.9 kip) set of dual tires to those calculated using layered linear elastic theory.

Fatigue Behaviour of a Dense Graded HMA Using the Four Point

26 using strain gages and pressure cells to measure dynamic response to load in the form of strains 27 and pressures [7, 10, 11-12]. In this sense, a road segment on BR-116/RS, in southern Brazil, 28 was instrumented with these sensors in the bottom of asphalt wearing course.

Why Tracking Temperatures is Key to Successful Asphalt Paving

Nov 20, 2019 · Hot mix asphalt is manufactured at temperatures between 270° F and 325° F. Depending on the environmental conditions and the distance from the hot mix plant to the project, hot mix asphalt can ...

Determining and Validating Thermal Strain in Asphalt Concrete

Thermal strain causes transverse cracks in Asphalt Concrete (AC) pavements. In this study, thermal strain is determined by developing a three-dimensional Finite Element Method ...

The Effect of Filler Asphalt Ratio on the Performance of Hot-Mix Asphalt

THE EFFECT OF FILLER ASPHALT RATIO ON THE PERFORMANCE OF HOT-MIX ASPHALT ZHUOHONG CONG and NANXIANG ZHENG Key Laboratory for Special Area Highway Engineering of the Ministry of Education, Chang’an University, Xi’an, China

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Small Scale Accelerated Pavement Testing in the Laboratory

Small Scale Accelerated Pavement Testing in the Laboratory for the Fatigue Characterization of Hot Mix Asphalt. This paper discusses the results obtained from small scale accelerated pavement testing in …

MnROAD - Minnesota Department of Transportation

i. A "LF" sensor measures hot-mix asphalt strain response due to dynamic loads applied to a whitetopping overlay. B. Description i. The "LF" sensor consists of a foil strain gage bonded to the bottom of an asphalt core that was removed and reinstalled prior to a bonded concrete overlay (whitetopping). C. Manufacturer. i.

CC7 North Instrumentation Plan

CC7 North Instrumentation Plan. Over 150 sensors of various types were installed in the test pavement. Dynamic sensors consisted of H-bar Asphalt Strain Gages (ASG) at the bottom of the P-401 asphalt HMA, Fiber Optic Strain Plate (FOSP) in test items LFC1-N to LFS5-N to measure transverse and vertical strains at the top and transverse stains at the bottom within the P-401 asphalt HMA layer ...

Debonding in Airfield Pavement Hot Mix Asphalt Layers

Asphalt strain gages were installed at the top of milled HMA surface and bottom of HMA overlay at Runway 4R-22L at Newark Liberty International airport (EWR) to study the debonding and slippage ...

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ATM-025/ATM-100 Asphhalt Mix Performance Tester

Asphhalt Mix Performance Tester Advanced testing for Hot Mix Asphalt (HMA) Dynamic c omplex mod ulus, flow n umber, flow ... LVDTs, strain gages, thermocouples, etc. The user is free to connect sensors to any universal input channel from any ...

Evaluation of a Hot Mix Asphalt Perpetual Pavement

The HMA pavement layers consisted of a 1.5-in upper layer and a 2.5-in middle layer (both with PG 70-28 asphalt binder), and four different lower layers with thicknesses varying from 6 to 12 inches and PG 64-22 or 70-28 binders. Strain sensors were installed at the bottom of the lower HMA layers in all test sections.

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DENSITY OF ASPHALT CONCRETE - HOW MUCH IS NEEDED? by E. Ray Brown National Center for Asphalt Technology NCAT Report No. 90-3 “The contents of this report reflect the views of the authors who are solely responsible for the

HMA Pavement Mix Type Selection Guide

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 and

Pavement Sensors

High Temperature, Dynamic Asphalt Strain Gage Jewell Instruments offers a Dynamic Asphalt Strain Gage (ASG), an embeddable strain gage designed for use in high frequency (dynamic) environments. This rugged gage is built to withstand high temperature and vibratory roller compaction, making it ideal for infrastructure and construction type projects.