Grouting method of nontoxic low-viscosity high-strength epoxy chemical grouting material

A chemical grouting, epoxy-based technology, used in infrastructure engineering, water conservancy engineering, artificial islands, etc., can solve the problem that the initial viscosity is difficult to reach the ideal state, and achieve excellent grouting, small shrinkage, and simple ratio. Effect

Active Publication Date: 2017-01-04
POWERCHINA XIBEI ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glycidyl ether is used as a diluent at the expense of the mechanical properties of grouting materials. Although it solves the

Method used

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  • Grouting method of nontoxic low-viscosity high-strength epoxy chemical grouting material
  • Grouting method of nontoxic low-viscosity high-strength epoxy chemical grouting material

Examples

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Example Embodiment

[0045] Example 1:

[0046] A grouting method for a non-toxic, low-viscosity and high-strength epoxy-based chemical grouting material according to the present invention comprises the following steps:

[0047] 1) Clean up the dirt on the crack surface to make the crack penetrate;

[0048] 2) Arrange grouting holes along the direction of cracks, and embed one-way water-stop grouting needles in the grouting holes;

[0049] 3) Seal the crack surface. For non-penetrating concrete surface cracks, it is necessary to leave vent holes at the highest point of crack extension;

[0050] 4) Preparation of non-toxic, low-viscosity and high-strength epoxy-based chemical grouting slurry;

[0051] 5) Connect the piston type grouting pump to grouting the grouting slurry prepared in step 4, starting from the bottom grouting hole, and grouting at low pressure from bottom to top one by one hole by hole. If the inside has been filled, the grouting can be finished, or the grout flowing out of the ...

Example Embodiment

[0054] Example 2:

[0055] On the basis of Example 1, when laying the grouting holes described in step 2, the concrete cracks should be drilled across the joints as much as possible. For the structural joints that can accurately grasp the direction of the joints, the drilled holes should be drilled. The spacing of the grouting holes depends on the width of the joints. Generally, 30cm±10cm is used, and a one-way water-stop grouting needle is embedded in the grouting hole.

[0056] Cross-fracture drilling is arranged on the principle of the shallowest hole depth and the most favorable for the diffusion of slurry. It can be arranged on the same side or both sides of the fracture according to the occurrence of the fracture, and the hole spacing should be encrypted at the bottom, regardless of the same side or both sides. , The hole position intersecting with the joint surface must be in a plum-shaped distribution hole row spacing on the crack surface, the hole spacing across the j...

Example Embodiment

[0058] Example 3:

[0059] On the basis of Example 1, the sealing treatment of the crack surface described in step 3 can be performed by the filling method of slotted epoxy cement, or the method of surface sticking and sealing.

[0060] The operation steps of the slotted epoxy cement filling method are as follows:

[0061] 1) Digging a U-shaped groove along the crack direction, the groove width is 5cm, the groove depth is 3cm, and extends to each end of the crack by more than 10cm;

[0062] 2) Use high-pressure clean air to clean the grooved part, and use a wire brush to remove loose particles;

[0063] 3) Apply epoxy-based interface agent on the inner surface of the clean tank to ensure the bonding force between the filling material and the concrete;

[0064] 4) After the interface agent reaches the initial setting state (touch the surface with fingers and leave marks without drawing), evenly fill the prepared epoxy cement material into the groove, and do a good job of comp...

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Abstract

The invention discloses a grouting method of a nontoxic low-viscosity high-strength epoxy chemical grouting material. The grouting method comprises the following steps: (1) clearing the crack surface dirt to obtain a communicated crack; (2) arranging grouting holes; (3) closing the crack surface; (4) preparing a nontoxic low-viscosity high-strength epoxy chemical grouting slurry; (5) sequentially performing low-pressure grouting in holes one by one from bottom to top until all grouting holes are full; and (6) cleaning the grouting instrument by acetone. The method disclosed by the invention has good applicability to the stressed cracks of structural concrete, temperature cracks of mass concrete and differential settlement cracks of cavity lining concrete; and moreover, the components of the grouting material are nontoxic, the initial viscosity is low, the strength of the cured product is high, and the curing time is adjustable.

Description

[0001] Technical field: [0002] The invention relates to a grouting method for a grouting material, in particular to a non-toxic, low-viscosity, high-strength epoxy-based chemical grouting material. [0003] Background technique: [0004] Grouting is a project that reduces leakage or strengthens strata, foundations or buildings by plugging open geological defects. Generally, the slurry pressure is sent to the cracks in the stratum or building foundation, the fault fracture zone or the joints and cracks of the building itself, so as to improve the impermeability and integrity of the irrigated stratum or building. There are two types of materials currently used in grouting plugging and reinforcement technology: one is chemical grouting materials based on organic polymer materials; the other is inorganic grouting materials based on cement. Because cement grouting has the advantages of high solid strength, wide source of materials, low price, convenient storage and transportation...

Claims

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Application Information

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IPC IPC(8): E02D29/16
CPCE02D29/16E02D2250/003E02D2300/0045
Inventor 胡炜韩练练毕亚丽张勇王奇峰孙宇飞
Owner POWERCHINA XIBEI ENG
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