Prior to start of construction of a building or road or embankment, it is important to check the condition of soil and study the behavior of soil under expected loading patterns. Soil has a direct relation to geography and this explains the variety of soil behaviors. The load bearing capacity of the location enables an idea of the weight a cross-sectional unit area of soil can support. Based on this, designers can decide the depth to be dug for foundation elements. Soil containing a higher portion of clay shall expand or shrink depending on the amount of moisture present..
Soil testing is primarily divided into residual, physical, and chemical tests. Typical prominent physical tests performed are Shear strength, Elasticity, and porosity. There are more tests like grain size analysis, density, moisture levels, permeability, load bearing capacity, penetration strength, etc. In material testing, it is common practice to specify in standards, the process to be adopted for sample preparations as the test results will depend on the way the samples were prepared. Hence each laboratory must have sample preparation devices. HEICO manufactures the entire range of testing instruments like the soil testing machine required for each of the purposes.
The most extensively used test method for load bearing ability is the shear strength test. This test is carried out in a special transparent container called triaxial cell The sample preparation involves special devices and the dimensions of the sample (generally cylindrical) depend on the end use or the type and detailed design of building or road.
The Triaxial test involves not only the test-cell that houses the test-sample, but also a loading system along with soil testing lab equipment that has the provisions and features to carry out the steps, process and pattern of loading. With the loading system comes the measurement, control, and the display and analytical systems required to present the results. The precise needs of this test are made possible with the use of advanced hydraulics including hydraulic power pack that is well controlled by hydraulic valves driven by complex computer algorithms. HEICO uses its own special software to enable control of the process to match the requirements of standards. HEICO have expertise in offering standard products, as well as customized equipment depending on customer requirements.
Most common standards used are ASTM, ISO, EN, DIN, JIS, and BIS.
The extensive spread of construction activity demands onsite tests. Hence more and more organizations prefer to have testing labs with soil testing equipment for agriculture closer to their sites of construction or road building. HEICO is able to deliver onsite and provide local onsite service thanks to its network of teams. Service is rendered onsite as well as offsite/remotely using computer based communication programs.