Most engineering firms offer a mix of services from foundations to roofs and everything in between. GRR Engineering focuses on pavement. Our engineering services include:

• On-site observation and monitoring
• Pavement construction quality control and quality assurance programs
• Field and laboratory testing analysis
• Design and review of hot mix or cold mix asphalt mixtures
• Consulting for construction material selection, compatability, and acceptability
• Pavement condition evaluation and recommendations for rehabilitation (PPS patented program with UMD and Army Corps of Engineers)
• Plasticity index
• Gradation, moisture content and classification
• pH testing

We are familiar with specifications from various agencies such as state and federal highway departments, ASTM, FAA, FHWA, AASHTO and the U.S. Army Corps of Engineers.

Proper performance of the roadway or parking lot requires a comprehensive evaluation of soil subgrades including sampling of soil for laboratory testing plus inspection of asphalt thickness and daily traffic loading on pavements. This data helps the engineer develop a cost-effective mis design to guarantee pavement performance for a specific design period. When pavements are constructed or rehabilitated properly, it’s important to have an inspector on-site to supervise the proper installation and compaction of materials by testing them using nuclear density gauge. If required, further testing can be accomplished at Global Resource Recyclers, Inc. (GRR).

GRR’s pavement engineer will work with you in the evaluation, design, and construction phases to avoid potential premature pavement failures. We will respond quickly to ever-changing pavement construction needs with the combination of local knowledge of materials and technical expertise. We respond with innovative solutions and alternatives that target your long-term performance objectives while considering cost. Our services are delivered on a timely basis with consistently high value attention to client needs.

GRR Engineering provides

• FSB Mix designs
• Forensic evaluations of existing pavement

Our laboratory, which was completed in 2011, has state-of-the-art equipment for testing foamed asphalt mixes, soils and aggregate. We have qualifoed and MARTCP certified lab technician and follow strict quality assurance guidelines for equipment usage and calibration. Unlike hot mix asphalt projects, large FSB projects must be custom tailored to the site where the paving is to be done. This ensures that a “one size fits all” approach is NOT applied to your project. GRR is the only laboratory in Mid-Atlantic region equipped with WLB-10 foaming machine to test foamed asphalt binders and mixes. We have capabilities of developing cost-effective cold-in-place recycling (CIR) and full depth recycling (FDR) mix designs by using recycled materials.

Stockpile Solutions

Do you need a solution to your Growing RAP Stockpiles? Download our white paper:

• Solution to your Growing RAP Stockpiles (PDF)

FSB Testing

Our foam asphalt testing includes:

• Optimum water content and temperature requirements of foam asphalt binders to produce required half-life and expansion ratios
• Optimum foam asphalt binder content to produce design strength of FSB mix

Soils and Aggregate

Laboratory tests are performed to define soil properties and identify those soils that do not conform to project specifications. For moisture content, strength, and stability, the early identification of issues helps avoid future problems and allows for correction of problems during construction.