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grouting method

A technology for grouting holes and mortar, which is applied in the fields of soil protection, construction, and infrastructure engineering, etc. It can solve the problems of not being able to adjust the viscosity of materials, control the diffusion distance, and unfavorable cost control at the same time, so as to be suitable for large-scale applications and simplify grouting The effect of process and low cost

Active Publication Date: 2016-03-23
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the following problems still exist in the prior art: in order to ensure the performance of cement-based grouting materials, the mortar-sand ratio should generally not exceed 1:1.5, and the amount of cement and other cementitious materials is still relatively high, which is not conducive to cost control; and this grouting material is only It can adjust the flow performance to meet different grouting requirements, but cannot adjust the viscosity of the material and control the diffusion distance at the same time to save the consumption of grout

Method used

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] Such as Figure 1 to Figure 5 Shown is a specific embodiment of the grouting method according to the present invention. It includes the following steps:

[0034] 1) Determine the grouting area 1, and complete the layout of the grouting holes 3, such as figure 1 shown.

[0035] 2) Determine the flow performance and viscosity of the grouting mortar based on the hole spacing between the grouting holes 3 and the width of the crack 2 . In this embodiment, the viscosity of the mortar is measured by evaluating the passing time of the mortar passing through the V-shaped funnel, and the fluidity performance of the mortar is evaluated by the test result of the degree of expansion of the mortar.

[0036] in, figure 2A schematic diagram of the structure of a V-shaped funnel is shown. The upper opening of the V-shaped funnel is 270mm×30mm, the...

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Abstract

The invention discloses a grouting method. The grouting method includes the following steps that firstly, a grouting area is determined, and grouting holes and grouting channels are laid out according to a design scheme; secondly, the flowing property and viscosity of grouting mortar are determined according to the hole pitch of the grouting holes and the width of seams; thirdly, the design of mix proportion of the grouting mortar is carried out to obtain the mix proportion of a grouting mortar series of which the performance meets requirements; fourthly, the grouting mortar which meets various index requirements and is stable in performance is produced through mixing according to the obtained mix proportion; fifthly, the grouting mortar is poured through a certain grouting hole till the grouting hole is full to complete single-hole grouting; sixthly, according to the designed grouting sequence and hole sequence, pouring is completed hole by hole till grouting of all the grouting holes in the grouting area is completed. According to the grouting method, the flowing property and viscosity of the grouting mortar can be adjusted; the grouting method can meet the requirement for grouting under the condition of different seam widths (millimeter-sized or lager) and different diffusion distances.

Description

technical field [0001] The invention relates to a grouting method, in particular to a grouting method for filling cracks with a width of millimeter level or above. Background technique [0002] 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. At present, there are two types of materials used in the grouting plugging and reinforcement technology in the world: one is chemical grouting materials based on organic polymer materials; the other is inorganic grouting materials based on cement. Compared with the former, the latter inorganic grouting material has achieved rapid development in recent years due to its non-pollution and environmental protection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12
Inventor 安雪晖陈长久周虎金峰
Owner TSINGHUA UNIV
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