Soil consolidation detector of using weight and air pressure combined loading and detection method

A technology of combined loading and detectors, which is applied in the direction of soil material testing, material inspection products, etc., can solve the problems that are rare, the consolidation loading control and detection methods have not formed a unified standard, and the consolidation drainage is large.

Inactive Publication Date: 2017-05-31
CHINA UNIV OF MINING & TECH
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Problems solved by technology

However, until now, it has been difficult to test the consolidation process of soils with high water content due to the large amount of consolidation drainage and lon

Method used

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  • Soil consolidation detector of using weight and air pressure combined loading and detection method
  • Soil consolidation detector of using weight and air pressure combined loading and detection method
  • Soil consolidation detector of using weight and air pressure combined loading and detection method

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Embodiment 1

[0059] The soil samples were taken from Xuchang, Henan. The undisturbed soil samples were chopped, mixed evenly, dried in an oven, and their moisture content was measured. Crush the dried soil samples, filter them with a sieve according to the required particle size distribution, and obtain a sufficient amount of soil samples for use.

[0060] Prepare the soil sample to be tested into a thin slurry with a water content close to the liquid limit and place it for more than 48 hours, apply a layer of vaseline evenly on the inner wall of the sample cylinder 25, and successively put the lower permeable stone 29 and clean and moist filter paper on the solidified surface. On the base 30 of the container, install the sample cylinder 25 and the fixed rod 26 on the base 30, and finally pour the evenly mixed mud into the sample cylinder 25 slowly, vibrate and stir gently to discharge air bubbles, and use the screw to test A gland 32 is installed on the sample cylinder 25 .

[0061] Put ...

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Abstract

The invention provides a soil consolidation detector of using weight and air pressure combined loading and a detection method. The soil consolidation detector is suitable for the technical field of property detection of soil and especially suitable for remolded soil consolidation process testing and consolidation process testing of natural soil with relatively high moisture content. The soil consolidation detector comprises a reaction frame, a weight loading device, a weight and air pressure loading conversion device, a sensing measurement device, a consolidation container and an air source pressure controller; after weight loading and forming of a certain settlement amount, upper counter-force is formed through an adjusting nut and a conversion accessory; an air pressure loading device is started to push the consolidation container to ascend to gradually replace a weight load; air pressure is applied to pre-determined consolidation pressure; and the deformations of soil samples in the weight loading process and the air pressure loading process are automatically switched and observed and the soil consolidation quality is recorded and controlled through two groups of sensors on the sensing measurement device. The soil consolidation detector is relatively high in accuracy and convenient to operate; and soil which is uniform in property and high in strength and has different soil consolidation degrees can consolidated under a high load condition.

Description

technical field [0001] The invention relates to a soil consolidation detector and a detection method using combined loading of weights and air pressure, especially suitable for the technical field of soil property detection, especially for the over-consolidation process control and content-containing process of remolding soil consolidated by mud. Detection of the degree of drainage and compaction of natural soil with a large amount of water. Background technique [0002] The method of analyzing the properties of the undisturbed soil by means of the remolded soil with the same particle gradation and the same degree of consolidation is one of the methods of soil property testing and analysis. Consolidation methods for remolded soil include compaction method, mud consolidation method, etc. The compaction method is the most common method for preparing remolded soil samples in geotechnical laboratories. The compaction instrument can quickly complete the sample preparation, but i...

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 董青红焦培培
Owner CHINA UNIV OF MINING & TECH
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