Calculation method for concrete crack chemical grouting grout diffusion radius
A technology of diffusion radius and chemical grouting, applied in the direction of diffusion analysis, scientific instruments, measuring devices, etc., can solve the problems of large randomness, unreasonable arrangement of grouting nozzle spacing, waste, etc., and achieve the effect of improving the technical level
Active Publication Date: 2016-06-29
HUBEI GEZHOUBA TESTING
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Problems solved by technology
Most of them are mainly based on the accumulation of engineering experience, and are determined by estimation and experience. The randomness brings about the technical problem that the grouting nozzle spacing is not reasonable, that is, too small will cause waste, and the grout filling will not be full when it is too large. The quality is affected
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[0023] Principle analysis:
[0024] The flow and diffusion radius of chemical grouting grout in cracks is the most basic parameter for chemical grouting repair of concrete cracks, and it is the basic basis for formulating grouting construction plans when chemical grouting repairs for concrete cracks. The diffusion radius of chemical grouting fluid in concrete cracks is affected by many factors. Generally speaking, it mainly includes the technical properties of chemical grouting fluid itself, the morphological characteristics of concrete cracks, and related grouting techniques. The crack shape of concrete itself is the most complicated among them. Even for a single crack, because the wall surface of the crack inside the concrete is uneven and rough, and the width of each position inside the crack is also different. The width of the crack near the tip of the crack will continue to decrease. At the same time, there may also be some fillers inside the concrete cracks, which will b...
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Abstract
Disclosed is a calculation method for a concrete crack chemical grouting grout diffusion radius. The diffusion radius of grouting grout is calculated under the effect of different grouting pressures according to the formula specified in the description; the influence of the crack width on the diffusion radius of grouting grout is calculated; the influence of crack chemical grouting duration time on the grout diffusion distance is calculated; the influence of the grouting grout viscosity on the grout diffusion radius is calculated. According to the calculation method for the concrete crack chemical grouting grout diffusion radius, calculation is easy, the technology is reliable, application is convenient, the requirement for engineering is met, and good economic benefits are reflected.
Description
technical field [0001] The invention discloses a method for calculating the diffusion radius of chemical grouting grout in concrete cracks, belonging to the technical field of hydraulic concrete defect repair. Background technique [0002] It is the method specified in the current industry standard DL / T5406-2010 "Construction Specifications for Chemical Grouting of Hydraulic Structures" to use different types of chemical grout such as epoxy and polyurethane to repair concrete cracks. However, the size of the grout diffusion radius is an important factor affecting the quality of grouting, and it is also a key process for chemical grouting of cracks. How to calculate the size of the slurry diffusion radius has been lacking a systematic and complete theoretical basis and scientific basis for a long time. Most of them are mainly based on the accumulation of engineering experience, and are determined by estimation and experience. The randomness brings about the technical problem...
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IPC IPC(8): G01N13/00
CPCG01N13/00G01N2013/003
Inventor 李焰吴建华邓少桢陈卫烈孟达李开熹宋润英邵红勇张金杰
Owner HUBEI GEZHOUBA TESTING