Construction method of concrete diaphragm wall in mucky soil body with high water content

A technology for concrete cut-off walls and muddy soil, applied in the field of concrete, can solve the problems of easy sinking of concrete cut-off walls, influence of concrete cut-off wall bearing capacity, and long concrete setting time, so as to shorten the final setting time and achieve final The effect of shortening the setting time and reducing the elastic modulus

Pending Publication Date: 2022-04-05
乐昌市恒源水电建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing construction method of pouring plastic concrete cut-off walls in silty soil with high moisture content, due to the long solidification time of the concrete

Method used

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  • Construction method of concrete diaphragm wall in mucky soil body with high water content
  • Construction method of concrete diaphragm wall in mucky soil body with high water content
  • Construction method of concrete diaphragm wall in mucky soil body with high water content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0064] A method for constructing a concrete cutoff wall in muddy soil with high water content, comprising the following steps:

[0065] (1) Build guide wall: Use surface grouting to reinforce the foundation and prevent seepage in the loose layer, and then use a small excavator to excavate the guide wall in the loose layer. The width of the guide wall is 95cm, and the top of the guide wall The surface is 10cm above the ground;

[0066] (2) Preparation of wall-fixing mud: Use rotary drill to make holes, then add Neptune polymer mud to stir, mix well, and set aside;

[0067] (3) Hole forming and slotting: the rotary drill rides directly on the guide wall to drill holes, the stress point on the upstream side is 1.2m away from the notch, and the construction is continuous for 24 hours. The hole forming time of each hole is controlled within 3 hours, and the hole forming time is certain Finally, the impact drill should follow up in time to drill the small wall and clear the hole to r...

Embodiment 5

[0077] The difference from Example 4 is that 12kg of polypropylene fibers and 15kg of nano-silicon dioxide are uniformly mixed in advance, and then added to step (7) to mix uniformly with other components.

Embodiment 6

[0079] The difference from Example 4 is that 20kg of polypropylene fibers and 8kg of nano-silica are uniformly mixed in advance, and then added to step (7) to mix uniformly with other components.

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Abstract

The invention relates to the field of concrete, and particularly discloses a construction method of a concrete diaphragm wall in a high-water-content mucky soil body, which comprises the following steps: (1) constructing a guide wall; (2) preparing wall-fixing slurry; (3) forming holes and grooves; (4) cleaning the bottom and changing pulp; (5) joint construction; (6) manufacturing and installing a reinforcement cage; (7) pouring concrete, wherein the plastic concrete in the step (7) comprises the following components in parts by weight: 160-320 parts of cement; 220 to 420 parts of clay; 125 to 250 parts of bentonite; 1250 to 1580 parts of sand; 1270 to 1505 parts of broken stone; 15 to 30 parts of aminocyclopropane carboxylic acid; 25 to 40 parts of sodium aluminate; 35 to 55 parts of polyvinyl alcohol; 4-15 parts of an expanding agent; 2-8 parts of a water reducing agent; and 650 to 825 parts of water. The concrete anti-seepage wall has the effect that the bearing capacity of the concrete anti-seepage wall is not prone to being affected.

Description

technical field [0001] The application relates to the technical field of concrete, more specifically, it relates to a method for constructing a concrete anti-seepage wall in muddy soil with high water content. Background technique [0002] The concrete cut-off wall is an underground continuous wall that is built by pouring concrete or backfilling other anti-seepage materials under the mud with mud-solid walls in loose permeable foundations or earth-rock dam dams. [0003] However, in the existing construction method of pouring plastic concrete cut-off walls in silty soil with high moisture content, due to the long solidification time of the concrete, the concrete has not yet solidified after the concrete is poured, making the concrete cut-off walls easy to sink , so that the bearing capacity of the concrete cut-off wall is affected. Therefore, there is still room for improvement. Contents of the invention [0004] In order to make the bearing capacity of the concrete cut...

Claims

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Application Information

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IPC IPC(8): E02D5/18E02D19/18E02B3/16C04B28/00C04B24/12C04B22/08C04B24/26C04B16/06C04B14/06C04B24/28
Inventor 周非罗峰磷王娟华朱相明
Owner 乐昌市恒源水电建筑工程有限公司
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