geotechnical test Articles
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Piezo Film Technology and Applications in Geotechnical Testing
Piezo films are thin, piezoelectric membranes that can be used both as source or as receiver. They may be adapted to a variety of in situ and laboratory geotechnical testing needs. This paper summarizes fundamental concepts in piezo film technology and the physical properties of this material. The principles behind common utilizations are reviewed, and three geotechnical applications are ...
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The Preparation of Hollow Cylinder Specimens from Undisturbed Tube Samples of Soft Clay
The use of torsional-hollow cylinder testing apparatus for research into soil stress-strain behavior has grown over the past decade. Most studies have focused on sands or on cohesive materials reconstituted in the laboratory. Studies involving undisturbed soft clay have been neglected, in part due to the difficulties involved in specimen preparation.The present paper describes a procedure for the ...
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Testing of Geotechnical Fabric for Use as Reinforcement
Twenty-seven commercially available petrochemical-based geotechnical fabrics, both woven and nonwoven, and one fiberglass fabric were evaluated for suitability as reinforcement in an embankment test section to be constructed on soft foundation at Pinto Pass in Mobile Harbor, Ala. by the U.S. Army Corps of Engineers Mobile District. All fabrics were subjected to initial testing in uniaxial tension ...
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Sinkhole investigation case study
Proposed Landfill Site - Sumter County, Florida A geophysical site characterization study was performed by GeoView to assist in the placement of a planned Class 2 Landfill in Florida. The survey area was approximately 160 acres. GeoView performed a ground penetrating radar (GPR) study map the lateral boundaries and determine apparent severity of karst (sinkhole) features. Electrical resistivity ...
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Model Size Effects in Centrifuge Models of Granular Slope Instability
Two assumptions behind geotechnical laboratory testing are: first, that soil with grains small enough to behave as a continuum in a full-scale field situation will also behave as a continuum in a small laboratory test; and, second, that side boundary effects in a laboratory test are either negligible or, if not negligible, do not dominate behavior but are quantifiable so that a correction can be ...
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Geotechnical Properties of Municipal Solid Waste
A geotechnical testing program was conducted to evaluate the engineering properties of aged solid waste samples retrieved from a landfill that began accepting waste as early as 1940. The conducted tests included water content, specific gravity, Atterberg limits, grain-size distribution, compaction, permeability, consolidation, triaxial, and direct shear. Maximum dry unit weight achieved using the ...
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Helical Probe Tests: Initial Test Calibration
Helical test probes of different sizes suitable for shallow (1.8-m) in-situ soil exploration and compaction control were developed and tested in different soils alongside traditional in-situ tests, including Standard Penetration tests (SPT), cone penetration tests (CPT), dilatometer tests (DMT), and in-situ density tests. The helical probe test (HPT) is a quick and economical test, which can be ...
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Geotechnical, Geophysical, Topography, Water Well Drilling and Water Supply Company in Afghanistan
Water Well Drilling, Geophysical, Geotechnical, Construction Materials Testing, Topography, Mapping and Water Supply Company in Afghanistan. Established and registered at Ministry of Commerce and Industries in July 28, 2004. Pyramid started its services as the first professional engineering company in the fields of water well drilling, geophysical surveys and geotechnical investigations in ...
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Modeling Pinch-Outs and Steep Topography in RockWorks - Case Study
Summary Areas with complex stratigraphy (i.e. pinch-outs, folding, faults, etc) are not easily modeled in the borehole manager. One will often have to take the grids originally created with the borehole manager and manipulate them in the Utilities or in other programs. There are several tools available is the Utilities for manipulating your grids. Once you have edited your grids, you can manually ...
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ASTM’s Technical Information Resource
All of ASTM International’s standards, papers and chapters, and books can be found, searched and subscribed to in one resource, ASTM Compass. A researcher investigates a new asphalt additive and tests with a standard from Committee C09 on Concrete and Concrete Aggregates. An engineering librarian recommends a group of standards for mechanical engineering students designing a protective ...
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Can I Use Landscape Fabric Geotextile for Erosion Control?
The performance of geotextile landscape fabric and its common function in civil engineering. The performance of geotextile landscape fabric. The geotextile has a melting point of 260 degrees and a specific gravity of 1.38 at a temperature of 20C. It has high physical properties of aging resistance and cracks resistance. When the humidity changes, the size of the geotextile does not change much, ...
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GEOBLOCK Grass Pavers: Fire Lane Access System
Geoblock Porous Pavement System Environmental regulations that control and limit storm water runoff, reduce impervious surfaces, and increase green space have resulted in the growth of permeable pavements for traffic areas. The GEOBLOCK Porous Pavement System offers support for all vehicular loadings and protects the grass from the damaging effects of traffic while allowing natural groundwater ...
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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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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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