Sediment resource delineation is an important aspect of any construction project. Cone Penetration Testing (CPT) has become an essential tool in delineating sediment resources because of its ability to penetrate deeply into the subsurface and collect data that can be used to identify sand and gravel.
Sediment resource delineation identifies and maps the distribution of sediment resources, such as sand and gravel. This process is vital for a number of reasons. First, it can help to identify potential areas for reclamation or restoration projects. This is important because it can help ensure these projects are conducted to minimize the impact on the environment. Second, engineers require accurate data to ensure they recommend appropriate mitigation strategies. Third, aggregates are an essential part of roadway construction and finding them close to construction sites increases efficiency and lowers cost.
The Need for CPT with Sand and Gravel
CPT has become an essential tool in sediment resource delineation because of its efficiency and accuracy. CPT is a geotechnical investigation method that involves statically advancing a sensored probe with a conical tip up to hundreds of feet below the ground subsurface to collect in-situ readings of three main measurements: tip resistance, sleeve friction, and pore pressure.
Based on internationally accepted methods for measuring sediment density, the data is translated by geotechnical engineers to understand the layers of earth at a given investigation site. With Vertek’s software, CPT data is collected every couple of millimeters, helping engineers delineate between sediment properties at a very granular level. This “picture” is a significant resource for engineers tasked with designing foundations.
Benefits over other Methods
CPT has several benefits over other methods of sediment resource delineation, such as drilling or trenching. CPT’s unmatched efficiency means more sites can be tested in a shorter amount of time with less manpower. With only a 1.44-inch or 1.75-inch probe being pushed into the ground, CPT disturbs less earth than many other methods of geotechnical testing. CPT is also safer because there is no heavy equipment constantly moving earth or heavy augers to deal with. Relying on sensors and software, there is little room for interpretation, making CPT a very accurate geotechnical testing method.
When precision is required, there is no better method than CPT.
When you need the best, trust Vertek CPT to complete the job with our various CPT products. Contact us today to learn more about how we can help you with your investigation needs.