Triaxial Test - Know About the Properties of Construction Material

Triaxial test systems are designed to help you determine the mechanical properties of soils when you need to design embankments, foundations, and other structures. Excavations, building constructions, tunnelling, and other similar applications can affect subsoil structures in many different ways, and these effects can be simulated successfully with a triaxial test. In this test, a specially designed device is used to determine the relationship between stress and strain in undisturbed or recompacted soil samples, which are investigated by subjecting them to different drainage conditions and stress levels.

A triaxial test will help make sure that the soil on your construction site can support the structure, which you want to build on it. It lets you identify soil properties on your site and measure the shear stress the soil can support and if it can support your structure. That way, you can make informed decisions and engineering predictions using valuable soil data, like dilatancy angle, apparent cohesion, and shearing resistance. Advanced triaxial test systems are capable of performing automated triaxial compression tests on remoulded and cylindrical undisturbed soil samples. CU (consolidated undrained), CD (consolidated drained), and UU (unconsolidated undrained) compression tests can run automatically, be controlled and reported using the device.

Some triaxial test systems are designed as universal electro mechanic test machines, which are servo-controlled multiplex machines with a load cell, data acquisition, and control unit, and linear potentiometric transducer. The digital loading system comes with a microprocessor controlled drive system and an advanced servo motor to let you set any test speed through the membrane keyboard. Testing speeds can be set between 0,00001mm/min and 51mm/min. Testing automatically stops when the displacement and load reach a 99 percent value of the measuring range you have set.


Construction material or the soil sample is loaded into specially designed vessels or cells. The cell capacity can tolerate confined pressures that can range up to 1700 kPA, which is suitable for simulating most conditions. Advanced triaxial test systems come with a PC software and data acquisition system for an easier way to retrieve and interpret data. You can manually set the channel gains for higher reading accuracy. 

Comments

Post a Comment

Popular posts from this blog

Advantages of Universal Testing Machine

The main advantage of investing in a universal testing machine is that the device can be used to test the strength, durability, and suitability for most any material. A universal testing machine has the capability to pull, compress, bend, or stretch material to its breaking point. It is primarily used by laboratories that manufacture and or mould different types of plastics. A universal testing device features one or two vertical columns mounted on a base. A second horizontal plate contains attachments that are used to hold the sample and slides up and down during stress testing samples. Dual vertical column machines are preferred by most laboratories as they can handle larger samples in terms of size and weight. Determining tensile strength is the most common test performed in a universal testing machine. This is done by holding one end of a sample in place while the other is pulled away until two sides are torn apart. The same process is used for testing flexural str...
Read more

Uses for Universal Testing Machine

Universal testing machine or UTM is aptly named as it can perform various types of tensile and compression tests on different materials. There are also many different terms used to refer to a UTM that you will commonly hear in the industry, among the most popular of which are a tensile tester, bend tester, and compression tester. Some types of UTMs are stripped of some capabilities and/or are marketed to specific sectors, like texture analyzers for food, peel tester for adhesives, labels, and tapes, and top load compression tester for pipes and packaging. True UTMs can perform all of these and more. They are great multi-purpose instruments for any QC or R&D laboratory. The following are only a few common uses for UTMs: Tensile testing – One of the most common applications for UTM, a tensile test measure how strong a material is, how long it can stretch, and how stiff it is as the material is pulled apart until breaking point. Compression testing – Compr...
Read more

Importance of Ultrasonic Pulse Velocity Test in The Construction Industry

Image
In the construction industry, it is important to ensure that structures are built properly using the highest-quality materials and construction methods. Hence, certain tests must be conducted to ensure the quality of certain materials. The ultrasonic pulse velocity test is one of the most essential tests designed to determine the quality of natural rock and concrete. This testing method is preferred because it is non-destructive and it is conducted on site, saving builders a lot of time and money. In an ultrasonic pulse velocity test, the quality and strength of rock or concrete is determined by measuring the velocity of the ultrasonic pulse, which passes through the natural rock formation or concrete structure. The test is conducted using specialised equipment that generates a pulse of ultrasonic wave and measuring the time it takes for that pulse to go through the concrete. A high velocity indicates that the material is continuous and high-quality, and a slower velocity may ...
Read more