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Method for compensation and anti-permeation of temperature difference cracks of ground concrete high-temperature pool

A temperature difference compensation, concrete technology, applied in swimming pools, buildings, building maintenance and other directions, can solve the temperature difference cracks without providing effective and reliable control and solution technology, the pool wall temperature difference has not been treated and improved, the temperature stress can not be effectively It can reduce the temperature stress of the pool wall, improve the physical properties of the surface, and reduce the maintenance cost.

Inactive Publication Date: 2009-09-30
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The root of this problem is that the temperature difference of the pool wall has not been dealt with and improved, and the temperature stress cannot be effectively controlled
Judging from the actual project results at present, the leakage problem will occur within a week after the crack is repaired, and the crack cannot heal by itself
Therefore, the traditional treatment method does not provide effective and reliable control and solution technology for the temperature difference cracks that are repeatedly generated due to problems such as technology and use.

Method used

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  • Method for compensation and anti-permeation of temperature difference cracks of ground concrete high-temperature pool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: clean up the calcium compound around the leaking crack of the concrete structure, for the crack of the small flow infiltration, adopt the stone cutting knife to cut out the process groove that the depth is 8mm and the width is 5mm along the crack, and the fast leak-stopping agent is used to seal the crack, Then configure polymer cement with a glue content of about 15%. The glue is made of acrylic emulsion and painted on the surface of the repaired cracks; Use a stone cutting knife to cut out a process groove with a width of 10mm and a depth of 10mm along the crack, pre-embed the grouting pipe for drainage, and seal the crack with a quick plugging agent, and then configure polymer cement with a glue content of 15%. Select acrylic emulsion, paint on the surface of the repaired cracks, and then use polyurethane grouting liquid for grouting repair, and pull out the grouting pipe after reaching the strength.

[0046] After the plugging is completed and the oute...

Embodiment 2

[0048] Embodiment 2: The plugging process The process is the same as that in Embodiment 1. After the plugging is completed and the outer surface of the concrete structure is cleaned, a concrete interface agent is used for primer treatment with a thickness of 0.5mm. Then prepare self-healing mortar, make mortar according to the proportioning of Table 1 embodiment 2, carry out uniform stirring, prolong 3 minutes than common mortar stirring time. Then paint according to the thickness of 15mm, and finish it at one time. Within three days, carry out water spray curing to maintain hydration reaction time and humidity.

[0049] After the self-healing mortar anti-seepage treatment is completed, the floating ash on the surface of the structure is removed, and the concrete interface agent is used as a primer with a thickness of 0.5mm. Prepare temperature difference compensation mortar: make mortar according to the ratio of Example 2 in Table 2, and stir evenly. The stirring time should...

Embodiment 3

[0050] Embodiment 3: The plugging process The process is the same as that in Embodiment 1. After the plugging is completed and the outer surface of the concrete structure is cleaned, a concrete interface agent is used for primer treatment with a thickness of 0.5mm. Prepare self-healing mortar then, make mortar by the proportioning of table 2 embodiment 3, carry out uniform stirring, prolong 3 minutes than common mortar stirring time. Then paint according to the thickness of 20mm, and finish it at one time. Within three days, carry out water spray curing to maintain hydration reaction time and humidity.

[0051] After the self-healing mortar anti-seepage treatment is completed, the floating ash on the surface of the structure is removed, and the concrete interface agent is used as a primer with a thickness of 0.5mm. Prepare temperature difference compensation mortar: make mortar according to the ratio of Example 3 in Table 2, and stir evenly. The stirring time should be 5 minu...

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Abstract

The invention discloses a method for compensation and anti-permeation of temperature difference cracks of a ground concrete high-temperature pool. The method comprises the following steps of: reliably sealing the place having the crack permeation firstly, and then (1) preparing self-healing mortar and using the self-healing mortar to plaster the surface of the pool; and (2) preparing temperature difference compensation mortar and using the temperature difference compensation mortar to plaster the surface of the pool. The self-healing mortar comprises the following compositions by weight portion: 100 portions of ordinary Portland cement, 200 to 400 portions of medium coarse sand, 6 to 10 portions of D-type adjusting agent, 0.1 to 1 portion of water reducing agent, 1 to 3 portions of silicon ash and 30 to 40 portions of water. The temperature difference compensation mortar comprises the following compositions by weight portion: 100 portions of ordinary Portland cement, 200 to 400 portions of medium coarse sand, 2 to 4 portions of F type adjusting agent, 0.1 to 0.2 portion of air-entraining agent and 30 to 50 portions of water. The method reduces the pool wall temperature stress, effectively controls temperature difference cracks and reduces the maintenance cost.

Description

technical field [0001] The invention relates to a non-stop external treatment method for temperature difference crack leakage of above-ground concrete structures storing hot water. Background technique [0002] The existing industrial water recycling at home and abroad is quite common. Most of the large-volume circulating water storage pool structures are concrete structures, and the pools are usually built at a certain height above the ground. Under conventional process conditions, the average temperature of industrial cooling circulating water is generally around 70°C. When the temperature is low, the temperature difference between the inner and outer surfaces of the pool is as high as 50°C. The outer surface of the pool produces a large number of fine temperature stress cracks, and continuous water seepage occurs. The leakage of water through the concrete structure layer will cause the precipitation of calcium ions in the concrete material, reduce the structural strength,...

Claims

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Application Information

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IPC IPC(8): E04G23/02E04H4/00C04B28/04C04B14/06C04B14/04C04B24/18C04B24/16
Inventor 罗国权张跃杨细中蒋月明
Owner BAOSHAN IRON & STEEL CO LTD
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