geotechnical Articles
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Uniformity Tests in Calibration Chamber Samples by the Thermal Probe Method
The calibration of geotechnical instruments for in-situ tests, performed on sand samples reconstituted in huge calibration chambers (CC), requires the reproduction of large specimens at given relative densities with good repeatability and satisfactory homogeneity. A test method has been developed with the purpose of evaluating the relative density, DR, in different locations of the CC samples ...
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What is a three-dimensional geotechnical drainage net?
A three-dimensional geotechnical drainage net is made of high-density polyethylene. It is a material used in geotechnical engineering for drainage, filtration, and soil reinforcement. It is made from high-strength polymer materials that offer tensile strength, chemical resistance, and excellent drainage ...
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A New Approach to Measuring Dilatancy in Saturated Sands
The determination of in situ properties of sand has proven to be a difficult objective, especially when it includes assessing volume change characteristics like dilatancy. Difficulty in obtaining representative undisturbed specimens as well as problems with extrapolating laboratory test results to the field has caused many to place increased reliance on in situ testing. One such test that is ...
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Interview with Ronald Ebelhar, 2015 Chairman of the ASTM Board
Ron Ebelhar has provided leadership in civil engineering projects and ASTM technical committee work since the 1970s. This year, he brings his experience to his elected position as chairman of the ASTM board of directors. You have worked on dozens of engineering projects since getting your degrees in civil engineering. What are some of the most interesting and challenging jobs you have been ...
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National Grid, Croydon case study
Morgan Est Contractors for National Grid Supply and installation of telemetred groundwater monitoring network, May 2006 - ongoing Hydro-Logic recently completed the supply and installation of borehole instrumentation and a telemetry monitoring system to monitor groundwater conditions in 28 observation wells located at 19 sites in the vicinity of Croydon. The project was required to ensure ...
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National Grid, Croydon case study
National Grid, Croydon Morgan Est Contractors for National Grid Supply and installation of telemetred groundwater monitoring network, May 2006 - ongoing Hydro-Logic recently completed the supply and installation of borehole instrumentation and a telemetry monitoring system to monitor groundwater conditions in 28 observation wells located at 19 sites in the vicinity of Croydon. The project was ...
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Filament Geotextile Fabric for Gravel Driveway Construction Project in Malaysia - Case study
Filament geotextile fabric for gravel driveway is made from high-quality continuous polypropylene fibers by the method of forming and consolidating polyester filaments. Its fibers are arranged into a three-dimensional structure. The continuous filament geotextile fabric for gravel driveway is a new type of building material for geotechnical and civil engineering applications, it is also widely ...
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Standard Chlorine of Delaware Remediation
By designing a 70-foot deep barrier wall, Black & Veatch was able to cut off contaminant source areas from a creek near New Castle, Delaware. The groundwater treatment system that Black & Veatch designed prevents site contamination from reaching the underlying drinking water aquifer. The Standard Chlorine of Delaware Site is a 65 acre area including an abandoned chlorobenzene ...
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Helios Field-portable Core & Soil Analyzer Uses Advanced NMR for Sample Analysis
Vista Clara’s Helios Core and Soil Analyzer (formerly named Corona) brings an unprecedented level of accuracy, flexibility and portability for robust measurements of hydrologic properties across a wide range of core sizes and lithology. By combining advanced NMR technology with low-field, high-bandwidth operation, Helios delivers laboratory precision in a field portable lightweight rugged ...
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