Reliable and Accurate Road Construction CBR Testing Across the UK
Soil stability and strength is key to any road construction project. At Site Testing Services Nationwide we specialise in road construction California bearing ratio tests (CBR) to measure the load bearing capacity and mechanical strength of soil.
Our nationwide testing services help geotechnical engineers and construction professionals design safe and durable pavements.
What is a Road Construction CBR Test?
The California Bearing Ratio (CBR) test is a well established method of testing soil strength and load bearing capacity. Developed by the California State Highway Department, this penetration test determines how well subgrade soil can support road construction materials such as asphalt or a high quality sub-base.
Components of the CBR test:
- Penetration Piston: A standard piston penetrates the soil to measure resistance.
- Measured Pressure: The penetration resistance is compared to a standard crushed rock material.
- CBR Values: Results help determine suitable materials for pavement design.
Why CBR Testing is important for Road Construction
A CBR test provides important data for any road construction project:
- Subgrade Strength: Can the soil take heavy loads?
- Pavement Design: How thick do the materials need to be?
- Compaction Related Tests: Checks soil compaction methods.
- Foundation Design: Helps design stable foundations for roads.
- Seasonal Moisture Variations: Accounts for soil strength changes due to weather.
Nationwide CBR Testing Services
At Site Testing Services Nationwide we provide CBR testing services to suit your project needs. Whether you need on-site field testing or laboratory analysis, our team will provide the results for civil all engineering purposes.
What We Offer:
On-Site Testing
- Testing at the proposed construction centreline.
- Fast provisional results to meet project deadlines.
Laboratory Tests
- In-depth analysis of soil samples to determine maximum particle size and bearing capacity.
- Data for geotechnical engineers and construction planners.
Field Tests
- Advanced tools like the Light Weight Deflectometer (LWD) and Dynamic Cone Penetrometer (DCP) for soil strength.
- Results for specific depths and soil types.
Detailed Reporting
- Reports include CBR values, provisional results and recommended materials.
How the CBR Test Works
The road construction CBR test involves:
- Sample Preparation: Soil is compacted and tested.
- Penetration Testing: A standard piston applies load to the sample to measure resistance.
- Load Values Analysis: The pressure required to achieve equal penetration is recorded.
- Results Interpretation: CBR values are calculated and compared to standard material.
CBR Testing in Road Construction
Our CBR tests are used for:
- Site Investigation: Finding weak soil areas that need to be improved.
- Pavement Design: Choosing materials for a high quality sub-base.
- Surface Stiffness: Data for road surface level adjustments.
- Foundation Design: Design robust and durable road structures.
Why STS Nationwide?
- Nationwide: We cover the whole of the UK for all types of construction projects.
- Accurate: Our CBR test procedures meet industry standards for results.
- Experienced: Our geotechnical engineers have road construction testing experience.
- Modern Equipment: We use plate bearing tests, sliding hammers and standard reference materials.
- Bespoke: We tailor our services to your project needs for cost effective testing.
Seasonal Moisture Variations in CBR Testing
Soil strength changes with seasonal moisture. Our CBR tests account for these changes so you can design roads that perform all year round. We test soil at specific depths and conditions to give you a full picture of its behaviour over time.
Other Road Construction Testing
In addition to CBR testing we offer multiple other tests:
- DCP Tests: Field strength assessments.
- LWD Tests: Lightweight, single operator surface stiffness.
- Plate Load Test: Determines the bearing capacity of the soil. Helps in assessing how the soil will respond under different pressure levels and is often used in the design of foundations.
Work with Us for Site Testing
Invest in site testing services and your road construction project will succeed. Our CBR tests, soil strength and pavement design expertise gives you the data to meet industry standards and build safe roads.
Get in Touch
Call Site Testing Services Nationwide on 07301 592141 for a free consultation. We’ll help you build roads that last!