VJ Tech Company History VJ Tech Limited - Blog - peter@vjtech.co.uk Dec 20 2021 50 0 Company News 30 years Asphalt Testing Company History Concrete Testing Rock Testing Soil Testing VJ Tech VJ Tech has been successfully operating for over 30 years, manufacturing and supplying high quality, advanced and innovative equipment to the construction and geotechnical industry. The company now has 24 employees and 5 specialist contractors, with Headquarters in Reading in the UK near London, and is one of the top 5 manufacturers globally, with sales in over 90 countries. Read more ...
Saturation Procedure for HAE Ceramic Discs in SWCC Systems VJ Tech Limited - Blog - Irina@vjtech.co.uk Aug 26 2021 70 0 Company News Unsaturated Testing Geotechnical Engineering HAE disc saturation procedure SD-SWCC Testing Soil Testing Stress Dependent Soil Water Characteristic Curve Unsaturated testing Adequate saturation of the High Air Entry (HAE) ceramic disc is important in order to perform a Soil Water Characteristic Curve (SWCC) test as it provides higher accuracy to the determination of the water volume changes. Saturation of the HAE disc allows a direct contact between the water in the soil pores and the water underneath the disc. In this way, water can move freely, under differential pressure, through the disc. In contrast, air cannot pass the HAE disc if it has a pressure lower than the Air Entry Value of the disc. Read more ...
Introduction to Direct Simple Shear (DSS) Testing VJ Tech Limited - Blog - adrian@vjtech.co.uk Jan 26 2021 3162 0 Company News Support Documents Technical White Papers Dynamic Testing Shear Testing Clisp Studio Active height control Constant normal stiffness Constant normal stress Creep tests Cyclic strain controlled tests Cyclic stress controlled tests Direct Simple Shear DSS Embankment testing Internal angle of friction Offshore platform design Shear strength cohesion An Introduction to Direct Simple Shear (DSS) Testing Read more ...
CLISP Studio Release 2.10.1.0 VJ Tech Limited - Blog - adrian@vjtech.co.uk Dec 16 2020 78 0 Company News Software Updates Triaxial Testing Consolidation Testing Dynamic Testing Shear Testing Bender Element Testing Marshall Testing Clisp Studio Clisp Studio version 2.10.1.0 is the final revision released to the public in 2020. This update to Clisp Studio includes the introduction of new testing standards, bug fixes and some feature upgrades. Read more ...
Introduction to Permeability Testing VJ Tech Limited - Blog - Irina@vjtech.co.uk Sep 11 2020 10378 0 Company News Permeability Testing Constant Head Dam Drainage Falling Head Geotechnical Engineering LandFillSites Permiability SoilTestings There are several laboratory and in situ tests that can be done to estimate the permeability of the soil and every test has its own advantages and disadvantages. The two most common are “the constant head permeability method” and “the falling head permeability method”. Read more ...
Introduction to unsaturated triaxial testing VJ Tech Limited - Blog - vasileios@vjtech.co.uk Jul 03 2020 2082 0 Company News Unsaturated Testing axis translation suction Triaxial Testing unsaturated Unsaturated Shear Testing unsaturated soils Unsaturated Triaxial Testing Read more ...
Introduction to Bender Element testing VJ Tech Limited - Blog - vasileios@vjtech.co.uk Jul 03 2020 2835 0 Company News Bender Element Testing Bender Element Testing Elastic Deformation GMax Non-destructive soil testing Shear Modulus small shear strain Bender Element is a non-destructive test performed in soil specimens to determine the small-strain shear modulus (Gmax) of the soil. Gmax is an important soil property which helps us to understand the elastic behaviour of the soil and to evaluate its response to dynamic loading, such as earthquakes, passing vehicles and vibrations. Figure 1 presents the various tests available to determine the shear modulus, G, of a soil. Shear modulus gets its maximum value (Gmax) at very small values of strain (within the elastic deformation field and usually at shear strains less than 10-3 %) which can be achieved only with a bender element test. This makes them very popular tests in soil mechanics. Moreover, due to its nature, a Bender Element test can be combined with another, main soil test on the same specimen (e.g. Triaxial or Consolidation) and can give estimations of the shear modulus at various stages of the main test. The Bender Element test can be performed multiple times on the same spec ... Read more ...
Sample Assembly for the DSS with Confining Pressure VJ Tech Limited - Blog - peter@vjtech.co.uk Feb 10 2020 100 0 Company News Dynamic Testing Shear Testing Confining Pressure Confining Rings Consolidation Dynamic Shear Dynamic Simple Shear Dynamic Testing Liquefaction Remoulded Specimens Sample Assembly Saturation Undisturbed Specimens This Blog covers sample assembly for the Dynamic Simple Shear with Confining Pressure System. This includes undisturbed and remoulded specimens for both confining pressure tests, and confining ring tests. This system is used for repetitive situations such as offshore wind turbines, where the structure has to withstand the varying strength of wave motion. Read more ...
Introduction to Cyclic (Dynamic) Triaxial Testing VJ Tech Limited - Blog - Maxwell@vjtech.co.uk Nov 28 2019 4569 0 Company News Support Documents Triaxial Testing Dynamic Testing bender elements cyclic loading data acquisition system dynamic actuator Dynamic Testing electromechanical frequency hydraulic ko consolidation load on sample secant modulus servo controller stress path three phase Triaxial Testing unsaturated Dynamic Triaxial testing is performed on soils when it is necessary to evaluate their strength and deformation properties under cyclic loading conditions. These conditions might include dynamic loading coming from earthquakes, passing vehicles and trains, sea waves, wind, vibration machines etc. There are many variations of Dynamic Triaxial tests and the user should select the one that is most accurately simulating the conditions in the field. Read more ...
Sample Preparation - Rowe Cell VJ Tech Limited - Blog - peter@vjtech.co.uk Oct 08 2019 73 0 Company News Support Documents Consolidation Testing Consolidation Consolidation Testing Rowe Cell Testing Sample Preparation Soil Testing Read more ...