Project Name: I-44, Adair County, Oklahoma
Project #: Will Rogers Turnpike Pavement Rehabilitation Project
Client: RED ROCK Consulting
Project Owner: Oklahoma Turnpike Authority (OTA)
Date: June 4-5, 2019
Description: EINCK, Corp was tasked to perform Falling Weight Defloctometer (FWD) testing on I-44 in Adair County, Oklahoma. The testing section extends approximately 5 miles, in Adair County, between STA. 4+22 and STA. 269+97.61. The purpose of the study was to perform FWD survey and estimate pavement section moduli using backcalculation technique.
EINCK, Corp performed FWD testing every 500-ft, with test locations in alternating travel lanes. There were a total of 217 FWD test locations performed for this project. The FWD testing was performed using JILS-20 equipment. The target load for analysis was 15,000-lbs and deflections were measured at eight points located radially from the center of the load plate ranging from 0 to to 60-inches. Flexible pavement backcalculation analysis was performed using the AASHTOWare BCTpavement design procedure and the composite pavement backcalculation analysis.
We prepared an engineering report containing project description, FWD procedure and field testing operation, pavement structure, back-calculation analyses, and results. FWD combined with pavement coring resulted in a better characterization of the subgrade material and identification of weaker pavement areas. EINCK, Corp performed all falling weigh deflectometer services on time and budget.
EINCK, Corp, also performed laboratory resilient modulus testing on pedological and composite samples. Tests were performed in accordance with the AASHTO T 307. A Lab data report was prepared summarizing the results including moisture content of compacted samples (before and after testing), sample dimensions, stress levels, recoverable strains, resilient moduli, permanent deformation and a mathematical model correlating resilient modulus with stress strain, as recommended by ODOT.
Project Name: SH 99, Grady County, Oklahoma
Project #: JP 30426(04) SH-19 Reconstruction
Client: RED ROCK Consulting, LLC
Project Owner : Oklahoma DOT (ODOT)
Date: March 30, 2018
Description: EINCK, Corp was tasked to perform FWD testing on SH 19 in Grady County, Oklahoma. The testing section extends approximately 2.02 miles, through Bradley, in Grady County, between STA. 806+05.95 and STA. 913+00. The purpose of the study was to perform FWD survey and estimate pavement section moduli using backcalculation technique.
EINCK, Corp performed FWD testing every 500-ft, with test locations in alternating travel lanes. There were a total of 44 FWD test locations performed for this project. Preliminary results of the FWD testing aided in determining the most strategic locations to perform the core location and soil test borings.
The FWD testing was performed using JILS-20 equipment. The target load for analysis was 15,000-lbs and deflections were measured at eight points located radially from the center of the load plate ranging from 0 to to 60-inches. Flexible pavement backcalculation analysis was performed using the AASHTOWare BCT pavement design procedure and the composite pavement backcalculation analysis.
We prepared an engineering report containing project description, FWD procedure and field testing operation, pavement structure, analyses, and results. FWD combined with pavement coring resulted in a better characterization of the subgrade material and identification of weaker pavement areas. EINCK, Corp performed all falling weight deflectometer services on time and budget.
EINCK, Corp, also performed the laboratory resilient modulus on pedological and composite samples for resilient modulus. Tests were performed in accordance with the AASHTO T 307. A Lab data report was prepared summarizing the results including moisture content of compacted samples (before and after testing), sample dimensions, stress levels, recoverable strains, resilient moduli, permanent deformation and a mathematical model correlating resilient modulus with stress strain, as recommended by ODOT.
Project Name: Wiley Post Airport, Oklahoma City, OK
Project #: Wiley Post Airport (WPA) project
Client: Terracon Consulting Engineers and Scientists
Project Owner: WPA
Date: August 30 – 31, 2018
Description: EINCK, Corp, conducted falling weight deflectometer (FWD) testing on Wiley Post Airport in Oklahoma City, Oklahoma. The testing sections consist of main runways (i.e., RW 17L-35R, RW 17R-35L), crosswind runway (RW 13-31), taxiways and aprons. The purpose of the study was to perform FWD survey and estimate pavement section moduli using back-calculation technique, load transfer efficiency (LTE), modulus of subgrade reaction using the AREA methods, among others.
EINCK, Corp used JILS-20 FWD equipment for this project. We performed FWD testing in accordance with the ASTM standards (D4694 - 09 and D4695 – 03), FAA Advisor Circular (FAA Specs.), and instruction from the pavement engineer with Terracon. The airport pavement consisted of both asphalt and concrete. For concrete pavement, we developed a test a matrix in accordance with FAA requirements including testing at the center of, edges, corners as well as joints of the concrete slabs. The deflection tests consisted of four seating drops and eight recording drops per test location. Below is the used drop sequence:
1. Two seating drops of a load of approximately 20,000 lbs
2. Four recording drops at 20,000 lbs
3. Two seating drops of a load of approximately 27, 000 lbs
4. Four recoding drops at 27, 000 lbs
We prepared an egnineering report containing project description, FWD procedure and field testing operation, pavement structure, back-calculation analyses, FWD testing locations and results.
Project Name: Advanced Testing and Modeling of Ultra-Lightweight Foamed Glass Aggregate
Project #: AERO Aggregate
Client/Owner: AERO Aggregate
Date: January - April, 2018
Description: EINCK, Corp was tasked to perform Resilient Modulus (Mr) testing in accordance with AASHTO T 307-99 Ultra-Lightweight Foamed Glass Aggregates (ULW-FGA). Samples were compacted in layers to 20% compression (i.e., 20% deformation of each layer height).
EINCK,Corp also completed Permanent Behavior Testing for the provided Foamed Glass Aggregates. We performed fatigue testing in accordance with EN 13286-7 ‶Unbound and hydraulically bound mixtures. Part 7: cyclic load triaxial test for unbound mixtures″. Samples were tested under one confining pressure (2 psi) and five various stress ratios using the multi-stage loading. ULW-FGA materials were ranked based on the basis of their plastic deformations. The standard recommends three behaviors:
1- Plastic shakedown – range A (stable deformation behavior)
2- Plastic creep – range B (failure at high number of cycles)
3- Incremental collapse – range C (failure at low number of cycles)
We prepared and submitted reports summarized our Mr and Fatigue test findings including sample information, compaction density, stress levels, statistical analyses and permanent deformation at the end of testing.
In addition, EINCK, Corp. performed modeling of two pavement sections (S. Capitol Street - East Oval to Ramp C); S. Capitol Street - P. Street SW to West Oval, and Ramp B) in Washington DC, to assess/evaluate the use of Foam Glass Aggregate under pavement. Project scope included the following:
• Stress analysis of the provided section using KENLAYER, a program based on elastic multilayer system under a loaded area.
• Structural Design of Pavement using AASHTOWare Pavement ME design.
Project Name: Multichannel Analysis of Surface Waves (MASW) – 2-D Vs Profiles
Project #: MASW Chalmers Mill Lofts, Amsterdam, NY, USA
Client: C.T. Male, NY
Date: January - April, 2018
Description: EINCK, Corp., performed MASW survey lines to map the area proposed for new development in Amsterdam, New York. The site is approximately located at 42°56'5.74"N, 74°11'46.76"W. The anticipated depth of exploration ranged between 60 and 80 feet below existing ground surface. Survey was conducted using the Geode seismograph from Geometrics. This MASW system consists of 24 vertical geophones with a 4.5 Hz sensitivity for data acquisition. The sampling rate for this test was of 0.125 msec leading to a frequency of 8 kHz. The duration of the signal storage was 2 sec. We used a 2.5 kg sledge hammer as active source impact on a 10” × 10” Ultra High Molecular Weight (UHMW) Polyethylene. Five repetitive shots are made at each location to improve the signal to noise ratio. Passive data was also acquired at a sampling frequency of 500 Hz. Data were processed and interpreted using Seisimager Software.
We prepared an MASW report containing project and site description, site geology, active MASW field method, data processign and results. Our MASW results helped the client obtain more accurate data for seismic site classification (e.g., via shear wave velocity) versus traditional SPT N-values correlations.