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Cut-off wall slurry material and wall building technique

A technology for anti-seepage walls and walls, applied in artificial islands, sheet pile walls, water conservancy projects, etc., can solve the problems of poor impermeability of wall materials, self-setting mortar anti-seepage walls are not convenient for on-site construction, etc., and achieve good shear Cut dilution, strong controllability of setting time, appropriate compressive strength and elastic modulus

Inactive Publication Date: 2008-02-27
CHANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the self-setting mortar cut-off wall is not convenient for on-site construction, and the impermeability of the wall material is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The composition and content of non-dispersible low-solid high-quality bentonite mud for wall protection are (unit: kg / m 3 ): Bentonite 70, Soda Ash 2.5, Hydrolyzed Polyacrylamide 0.16, Hydrolyzed Polyacrylonitrile 1.5, Water 940.

[0018] The components and content of the original mortar for curing are (according to the production of 1m 3 Calculation of cut-off wall volume, unit kg / m 3 ): No. 425 ordinary Portland cement 240, sand 120, fly ash 35, water glass 20, naphthalene sulfonate condensation polymer 1.2, aluminum sulfate 0.3, water 108.

[0019] Use 0.6m 3 The retaining wall with mud and 1m 3 1m 3 anti-seepage wall. The specific manufacturing steps are as follows: during the excavation process of the unit groove section of the cut-off wall, inject mud for wall protection into the groove; at the end of the construction of the unit groove section, gradually add the original mortar for curing to the mud in the groove The initial mixing of the original mortar fo...

Embodiment 2

[0023] The components and consumption of the mud for retaining wall and the original mortar for curing are shown in Table 1. The wall-building process is basically the same as in Example 1, except that 10 kg of water glass is included when mixing for the first time, and the remaining 10 kg of water glass is mixed for the second time. join in. The parameters of the mixture are listed in Table 2.

Embodiment 3

[0025] The components and consumptions of mud for wall protection and original mortar for curing are shown in Table 1. The wall building process is basically the same as in Example 1, except that 10 kg of water glass is included when mixing for the first time, and the remaining 15 kg of water glass is mixed for the second time. join in. The parameters of the mixture are listed in Table 2.

[0026] The wall thickness of the solidified mortar anti-seepage wall of the present invention is generally 15-150 cm, the bottom of which should be embedded in the bedrock or impermeable layer for 0.5-1.0 m, and the depth of the wall can be as deep as 60 m.

[0027] Table 1

[0028] Example 1

Example 2

Example 3

Mud for retaining wall

(kg / m 3 )

Bentonite 70

Pulping Clay 110

Bentonite 50

Soda Ash 2.5

Soda Ash 5.5

Soda Ash 2.0

Hydrolyzed polyacrylamide 0.16

Hydrolyzed polyacrylamide 0.18

Hydrolyzed polyacrylamide 0.15...

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PUM

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Abstract

The present invention discloses one kind of water tight wall grout material and the wall building process therewith. The wall grout material includes wall protecting slurry comprising bentonite or clay, sodium carbonate, selective flocculant, water loss lowering assistant and water; and curing original mortar comprising Portland cement, sand, fly ash, water glass, water reducing agent, cross-linking agent and water. The water tight wall building process includes the following steps: pouring wall protecting slurry into dug water tight wall slot, adding curing original mortar gradually into the slurry for mixing with wall protecting slurry during digging operation, and adding more water glass in the last stage for curing to form water tight wall. The water tight wall has excellent water tight performance, controllable solidification time, low cost and no pollution.

Description

technical field [0001] The invention belongs to the field of underground anti-seepage engineering, and in particular relates to a wall slurry material for an anti-seepage wall and a wall-building process. Background technique [0002] From the 1960s to the 1980s, the wall materials of my country's anti-seepage walls mainly used rigid materials such as ordinary concrete (or reinforced concrete), clay concrete and fly ash concrete. These concrete materials have high compressive strength (5-35MPa), elastic mold Large amount (15000 ~ 32000MPa), suitable for underground walls with joint functions of anti-seepage, soil retaining and load bearing. If it is only used for anti-seepage, the engineering cost of using rigid materials as the wall is too high (600-1200 yuan / m 2 ), and the rigid concrete is prone to local cracking under the action of the horizontal force of the foundation soil, resulting in a decrease in the anti-seepage capacity. [0003] By the 1980s, my country's anti-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/02E02D19/18E02D5/18
CPCC04B2111/00293C04B28/26C04B40/0039Y02W30/91C04B7/02C04B14/06C04B14/104C04B18/08C04B22/106C04B24/383C04B38/0022C04B40/0028C04B2103/008C04B2103/302C04B14/10C04B24/226C04B24/2652C04B24/18C04B12/04
Inventor 代国忠史贵才代璐王兆林周泓鲁良辉靖向党齐永胜
Owner CHANGZHOU INST OF TECH
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