Testing mould system and its operating method for triaxial experimental disturbed soil testing piece

A triaxial test and test piece technology, which is applied in the direction of basic structure test, material inspection product, construction, etc., can solve the problems of uncontrollable dry density, low preparation efficiency, narrow application range, etc., to reduce manual workload, prepare High efficiency and wide application range

Active Publication Date: 2010-04-21
CCCC FIRST HIGHWAY CONSULTANTS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention overcomes the problems of uncontrollable predicted dry density, low preparation efficiency, narrow application range and relatively complex structure existing in the prior art

Method used

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  • Testing mould system and its operating method for triaxial experimental disturbed soil testing piece
  • Testing mould system and its operating method for triaxial experimental disturbed soil testing piece
  • Testing mould system and its operating method for triaxial experimental disturbed soil testing piece

Examples

Experimental program
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Embodiment 2

[0039] Example 2, the test mold is composed of a cylinder and a compacting block, wherein the inner diameter of the cylinder is 61.8mm, and the height is 205mm, and there are six compacting blocks, all of which are 61.8mm in diameter, of which there are four The height is 25mm (the same as the height of each layer of the formed sample), and the other two are 40mm, one of which is used as the bottom plate. The total height of the six compacted blocks plus the height of the single-layer soil sample is just equal to the height of the cylinder . The specific operation method of sample preparation is as follows:

[0040] 1. Select the test soil sample, air-dry, crush, and sieve (pass through a 5mm sieve), measure the air-dried moisture content, and calculate the required water amount according to the optimal moisture content of the soil sample.

[0041]2. Spray the amount of water to be added on the soil and mix well, put it in a plastic bag after standing still for a while, and t...

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Abstract

A test mould system of disturbed soil test piece for three-shaft test comprises sleeve, bottom plate, five compaction blocks coordinating with sleeve in slide way, fixing frame for fixed-demoulding ofsleeve, pressure unit for compacting and pressure unit for demoulding. It is featured as making height of four compaction blocks be identical to height of single soil layer, setting bottom plate to beround form and setting its slide coordination unit at bottom of sleeve, applying static pressure to prepare test piece.

Description

Technical field: [0001] The invention relates to the technical field of road foundation treatment equipment, in particular to a mold testing system for triaxial test disturbed soil specimens and an operating method thereof. Background technique: [0002] According to the current "Highway Soil Test Regulations" (JTJ051-93), when preparing the disturbed soil specimens for the triaxial test, the method of layered compaction with a compactor is adopted. The so-called compactor mainly includes a sleeve, a bottom plate at the lower part of the sleeve and a hammer for compacting the soil sample. When in use, put the loose soil sample into the sleeve, compact it with the hammer, and then Add loose soil samples to the compacted soil samples, compact again, and repeat five times to complete the preparation of disturbed soil samples, and the finished product is five-layer soil samples. The problems existing in the existing equipment are: 1. Unable to control the estimated dry density:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/42E02D33/00
Inventor 张留俊张梅玲尹利华张发如
Owner CCCC FIRST HIGHWAY CONSULTANTS
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