Introduction
Infrastructure, environmental, and civil engineering projects depend on reliable laboratory testing to validate material performance, ensure design compliance, and support quality assurance decisions. RSA Geolab LLC provides standards-based laboratory testing for geosynthetics and soils, helping engineering teams, contractors, manufacturers, and regulatory agencies make informed decisions backed by accurate data.
As an AASHTO-accredited testing facility, we combine documented quality procedures with responsive communication and dependable turnaround times. Whether you’re testing geomembrane conformance, evaluating interface shear behavior, or analyzing soil properties, our laboratory delivers the precision and reliability your project requires.
What Standards-Based Testing Means
Standards-based testing follows established protocols developed by recognized industry organizations such as ASTM International, AASHTO, and others. These protocols specify:
- Sample preparation procedures to ensure consistency
- Testing equipment calibration for accuracy
- Step-by-step test methods that produce repeatable results
- Data reporting formats that meet engineering and regulatory requirements
By adhering to these standards, laboratories ensure that test results are comparable, defensible, and appropriate for use in design validation, quality control, and regulatory compliance.
Why AASHTO Accreditation Matters
The AASHTO Accreditation Program (AAP) formally recognizes a laboratory’s competency to perform specific tests on construction materials. AASHTO accreditation requires:
- Demonstrated proficiency in test method execution
- Regular third-party audits and oversight
- Documented quality management systems
- Ongoing participation in proficiency testing programs
RSA Geolab’s AASHTO accreditation provides assurance that our testing processes meet the highest standards in the construction materials testing industry.
Our Core Testing Capabilities
1. Geomembrane & Geotextile Conformance Testing
Geosynthetic materials must meet project specifications before installation. Our conformance testing services verify that geomembranes, geotextiles, and related products meet manufacturer specifications and project requirements.
Common conformance tests include:
- Thickness measurement
- Mass per unit area (weight)
- Grab tensile strength
- Wide-width tensile strength
- Tear resistance
- Puncture resistance
- Permittivity and permeability
- Carbon black content and dispersion
These tests ensure that delivered materials match approved submittals and provide the engineered properties required for project success.
2. Interface Shear Testing
Interface shear strength governs the stability of layered geosynthetic systems in slopes, caps, and containment applications. RSA Geolab performs direct shear testing to measure friction angles and adhesion between:
- Geomembrane-to-geotextile interfaces
- Geomembrane-to-soil interfaces
- Geosynthetic clay liner (GCL)-to-geomembrane interfaces
- Geotextile-to-soil interfaces
Interface shear testing provides critical design parameters for slope stability analysis, helping engineers evaluate factor-of-safety margins and select appropriate materials for site-specific conditions.
3. Seam Performance Evaluation
Field-constructed geomembrane seams are a common point of vulnerability in containment systems. Our seam testing services evaluate the quality and strength of field seams through:
- Seam peel testing – Measures bond strength between overlapped geomembrane panels
- Seam shear testing – Evaluates tensile strength of the seam under shear loading
Both destructive and non-destructive seam testing support construction quality assurance (CQA) programs, ensuring that installed geomembrane liners perform as designed throughout the project lifecycle.
4. Hydraulic Conductivity Testing
Hydraulic conductivity (permeability) testing measures the rate at which water flows through geosynthetic or soil materials under controlled conditions. RSA Geolab performs:
- Geosynthetic clay liner (GCL) permeability testing using flexible-wall permeameters
- Geomembrane transmissivity testing to evaluate drainage layer performance
- Soil permeability testing for compacted clay liners and engineered fill materials
Hydraulic conductivity data informs containment system design, drainage system performance, and regulatory compliance for environmental projects.
5. Comprehensive Soil Analysis
Geotechnical projects require accurate characterization of soil properties for foundation design, earthwork quality control, and site suitability evaluation. Our soil testing services include:
Index Property Testing:
- Moisture content
- Grain size distribution (sieve analysis)
- Atterberg limits (liquid limit, plastic limit, plasticity index)
- Specific gravity
- Organic content
Engineering Property Testing:
- Standard Proctor and Modified Proctor compaction
- California Bearing Ratio (CBR)
- Unconfined compressive strength
- Consolidated undrained (CU) triaxial testing
- Direct shear testing
These tests provide the foundational data engineers need to evaluate soil behavior, design earthworks, and specify construction requirements.
Who We Serve
Engineering Firms
Consulting engineers rely on RSA Geolab for design-phase testing, construction quality assurance support, and forensic investigations. Our clear reporting and responsive communication integrate seamlessly into project workflows.
Contractors & Installers
Construction teams use our testing services to verify material deliveries, validate installation quality, and document compliance with project specifications and CQA plans.
Manufacturers
Geosynthetic manufacturers trust RSA Geolab for product certification testing, quality control verification, and third-party validation that supports product approvals and market confidence.
Regulatory Agencies
Environmental agencies and departments of transportation require accredited laboratory testing for permit compliance, design review, and ongoing monitoring programs. Our AASHTO accreditation and documented procedures meet regulatory expectations.
Why Teams Choose RSA Geolab
Documented Quality Procedures
Our laboratory operates under documented quality management systems that align with AASHTO accreditation requirements. Every test follows established protocols, and every result undergoes technical review before release.
Responsive Communication
We understand that project schedules and engineering decisions depend on timely test results. Our team provides:
- Clear communication on sample receipt and testing timelines
- Proactive updates if questions or issues arise
- Direct access to technical staff for result interpretation
Reliable Turnaround Times
Laboratory testing shouldn’t be the bottleneck in your project schedule. RSA Geolab prioritizes efficient workflows that deliver accurate results without unnecessary delays.
Standards-Based Reporting
Our test reports include all data required for engineering analysis, regulatory submissions, and construction documentation. Reports reference applicable test methods, present results in standard formats, and include clear sample identification for traceability.
Getting Started with RSA Geolab
Contact RSA Geolab
For questions about testing capabilities, turnaround times, or project-specific requirements, contact our team directly: https://www.rsageolab.com/contact/