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Humidity and osmotic suction-controlled box

A comprehensive test and suction technology, used in soil material testing, permeability/surface area analysis, instrumentation, etc., to solve problems such as inability to obtain consistent results and parameters, unreliability, and uneconomical

Active Publication Date: 2012-05-09
THE HONG KONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to natural variability and sample preparation variability among different soil samples, it is not reliable to use four different samples to obtain consistent results and parameters
Furthermore, using four different specimens and four test steps is time consuming and uneconomical

Method used

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  • Humidity and osmotic suction-controlled box
  • Humidity and osmotic suction-controlled box
  • Humidity and osmotic suction-controlled box

Examples

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Embodiment Construction

[0028] The following descriptions provide numerous specific details to provide a thorough understanding of the embodiments. One skilled in the relevant art will recognize, however, that the techniques described herein may depart from one or more of the specific details, or be practiced in other methods, components, or the like. In other instances, well-known structures, materials, and steps are not shown or described in detail to avoid obfuscation.

[0029] Various embodiments of the suction-controlled unsaturated soil tester described herein can be used in the fields of geotechnical and environmental geotechnical engineering. Various embodiments of the suction controlled unsaturated soil tester may include an integrated moisture and osmotic suction controlled unsaturated soil tester (or HosmoBox). Various embodiments of the Suction Controlled Unsaturated Soil Tester can test or measure a variety of mechanical and soil-water properties of unsaturated soils, including shear st...

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Abstract

Described herein are systems, apparatuses and methods for the design and use of a suction-controlled box for the measurement of stress-dependent soil and water characteristics, shear strength, volume changes and consolidation characteristics from a single unsaturated soil specimen. The suction-controlled box can include a suction control part and a mechanical loading part, which can apply various suctions and mechanical loadings to test a specimen for a full range of suctions. The suction-controlled box can also include a helical water compartment that can flush diffused air bubbles.

Description

[0001] related application [0002] This patent application claims priority from the US Provisional Patent Application. The application number of this US provisional patent application is 61 / 381645, the application date is September 10, 2010, and the title of the invention is "unsaturated soil comprehensive tester for humidity and osmotic suction control". The entire disclosure of this US Provisional Patent Application is incorporated by reference into this document. technical field [0003] This invention relates generally to the measurement of mechanical and soil-water properties of saturated and unsaturated soils, and more particularly to the design and use of an unsaturated soil tester for suction control to aid in these measurements. Background technique [0004] Accurate testing and measurement of the mechanical and soil-water properties of saturated and unsaturated soils is important in a variety of projects, which can include various geotechnical and environmental g...

Claims

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Application Information

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IPC IPC(8): G01N33/24G01N3/24G01N15/08
CPCG01N2203/0025G01N13/04G01N3/24G01N15/08G01N33/24
Inventor 吴宏伟
Owner THE HONG KONG UNIV OF SCI & TECH
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