Mechanical properties of loessial soils are the functions of their in-situ physical conditions, geological history, as well as actual load distribution at the site of interest. It is well known that the bearing capacity of loesses and loessial soils decreases with an increase in their porosity and water content. Physical and mechanical properties of soils can be determined by different laboratory and field methods. Technical and economic advantages and/or disadvantages of utilizing these methods are discussed. Field and laboratory test results are presented in tabulated form and analyzed. The paper describes the technique of plate load tests performed at three construction sites located near the city of Odessa (Soviet Union). Information obtained during the field tests was compared with results of soil tests carried out in the laboratory on hand-carved (undisturbed!) specimens.
Field sensor quickly, accurately identifies soil issues
Producers sometimes face challenges that go deep into the soil. They need answers to help the soil, on site. A portable field sensor can accurately measure minerals in soils more easily and efficiently than existing methods. And a research team, including a middle school student and her scientist father, can confirm it.
Calcium, like other minerals, is necessary for healthy plant growth. However, an excess of calcium — particularly in the form of...
Abstract: This paper examines the advantages and limitations of CPTu and SCPTu as an exploration method for geotechnical engineering of Presumpscot Formation. Discussion will include typical results of CPTu and SCPTu data for Presumpscot Formation, application and use for settlement prediction, bearing capacity analysis, slope stability evaluation, and seismic design considerations. Intent is to provide an overview of the Use and Application of Piezocone Penetration Testing for the Presumpscot Formation in...
A soil test should be one of the first steps you take in your landscape plan. Many of us never take this important first step, which contributes, to wasted resources and wasted time. The U.S. Department of Agriculture says soil testing is an “essential” tool that provides information on fertility and pH. Testing also indicates what amendments you should add to increase productivity of your soil. Without a soil test you may be spending money and time on adding the wrong or too much of a specific...
These case studies show the performance using Sitelab’s UVF-3100 analyzer testing gasoline range organic hydrocarbons. This includes benzene, xylene, BTEX and other volatile petroleum compounds in the GRO or VPH C6 to C10 hydrocarbon range. When calibrated using Sitelab`s GRO calibration kit (CAL-025), the UVF analyzer produces test results that correlate well to laboratory regulatory methods using GC instrumation. Both the UVF-3100A and UVF-3100D models are fitted with special optical filters sensitive...
These case studies highlight Sitelab’s accuracy from customers who have used the UVF-3100D for testing Target PAHs. This test correlates well to U.S. EPA Method 8270 or similar GC methods, which includes a list of 16 or more compounds. The analyzer is fitted with special optical filters sensitive to this same group of hydrocarbons.Examples of UVF-3100D testing Polycyclic Aromatic Hydrocarbons in Soils vs. Certified Laboratories. Concentrations in ppm (mg/Kg)Manufactured Gas Plant, Coal Tar SiteA contractor...
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