Test system and method for determining seepage deformation of cement soil

A technology of penetration deformation and test system, which is applied in the field of rock and soil test equipment, can solve the problems of test devices that have not perfected the penetration deformation characteristics of cement soil, poor sealing and water-stop effect, and influence on the flow area, etc., to achieve perfect test functions, Good sealing effect

Pending Publication Date: 2020-06-19
WATER RESOURCES RES INST OF SHANDONG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The inventor found that the conventional osmotic deformation instrument cannot meet the above-mentioned test requirements, and the structure of the device affects the flow area, and the sealing and water-stopping effect is poor
At present, there is no perfect test device suitable for testing the seepage deformation characteristics of cement soil.

Method used

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  • Test system and method for determining seepage deformation of cement soil
  • Test system and method for determining seepage deformation of cement soil
  • Test system and method for determining seepage deformation of cement soil

Examples

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Embodiment 2

[0049] This embodiment discloses a method of the test system for measuring the penetration deformation of cement described in Embodiment 1, which includes the following steps:

[0050] Step 1: Pretreating the sample; the specific method is as follows: apply sealant evenly on the side surface of the sample, and soak the sample coated with sealant in clean water for at least 24 hours or use a saturation tank for vacuum saturation.

[0051] Step 2: Put one end of the latex film into the sample holder, and bind and fix it with the sample holder through the first groove. Place the first water permeable plate, the sample and the second water permeable plate on the sample holder in sequence. The other end is bound and fixed with the water collecting cylinder through the second groove. At this time, the outer peripheral surface of the sample is covered with latex film, the outer cover is placed from top to bottom, the bottom surface is placed on the base, the connecting ring is rotated...

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Abstract

The invention relates to a test system and method for determining seepage deformation of cement soil. The system comprises a base, the base is fixedly connected with the transparent cover through a fixing piece; an outer cover is detachably connected between the base and the transparent cover; the base, the transparent cover and the outer cover form a pressure chamber; a sample holder is fixed onthe upper surface of the base; a first permeable plate can be placed on the upper surface of the sample holder; a sample can be placed on the upper surface of the first permeable plate; an annular second water permeable plate can also be placed in the pressure chamber; the second water permeable plate can be placed on the upper surface of the sample; a water collecting cylinder is fixed on the lower surface of the transparent cover; the bottom end surface of the water collecting cylinder can be contacted with the upper surface of the second permeable plate; the transparent cover is provided with a water outlet pipe communicated with the internal space of the water collecting cylinder, the water outlet pipe is connected with a flow meter, the sample seat is provided with a water inlet pipe,the water inlet pipe is connected with a water supply mechanism, the base is further provided with an inflation pipeline, and the inflation pipeline is connected with an air supply mechanism.

Description

technical field [0001] The invention relates to the technical field of geotechnical testing equipment, in particular to a testing system and method for measuring the seepage deformation of cement and soil. Background technique [0002] The statements herein merely provide background related to the present invention and do not necessarily constitute prior art. [0003] Cement-soil is a hydraulic composite building material formed by mixing soil particles, cement and water in proportion. With the continuous progress of anti-seepage technology, cement-soil has been used in foundation pit support and foundation reinforcement in the past 30 years. , roadbed cushion, anti-seepage of landfill, curtain of deep foundation pit and river embankment and other anti-seepage projects. As a flexible impermeable material, cement-soil has a small permeability coefficient and a high seepage gradient. Laboratory testing of cement-soil seepage deformation requires a high infiltration water pres...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01B21/32
CPCG01B21/32G01N15/0826
Inventor 张禾朱传磊楚冬梅
Owner WATER RESOURCES RES INST OF SHANDONG PROVINCE
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