Method and device for repairing concrete gap with chemical grout

A technology of chemical grouting and concrete, applied in packaging, building maintenance, transportation and packaging, etc.

Active Publication Date: 2008-01-23
SINOHYDRO BUREAU 7 CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In view of the above difficulties, the present invention provides a method for chemical grouting to repair concrete cracks and the equipment used, which can effectively solve the above problems, making the construction of chemical grouting to repair concrete cracks more refined, more concise, more effective, and easier to operate. more accurate and faster

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  • Method and device for repairing concrete gap with chemical grout

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Embodiment Construction

[0023] 1. Drilling: Before chemical grouting, according to the condition of the crack, the grouting hole must be drilled within 10cm to 15cm of the side of the crack or through the seam. The diameter of the drill hole is φ18mm; the depth of the drill hole is 10cm to 150cm. Due to the small diameter of the drilled hole, the secondary damage to the concrete caused by the drilled hole is effectively solved. The drilling spacing is: side holes of cracks: 10cm to 15cm away from the sides of cracks, hole spacing of 20cm to 35cm, drilling obliquely through cracks, according to the depth of cracks, more than two rows of drilling holes can be arranged, and each row of drilling holes is single The range of the cracks controlled by the hole is generally φ50cm~φ100cm in diameter; drilling through cracks: the spacing is 20cm~35cm. When the drilling depth exceeds 40cm, a threaded steel bar with a length of 60% to 80% of the drilling depth and a diameter of φ14mm to φ16mm is added in the dri...

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Abstract

The invention relates to concrete, in particular to a mending method for concrete fissures of buildings and the devices used in the mending. The devices used comprises a grouting plug and a mortar-storage tank. The grouting plug is in such a form that an ejecting & pressing pipe is looped on the pipe wall at upper end of a mortar intaking pipe, a rubber plug is looped on the pipe wall at the lower end of the mortar intaking pipe, and the two ends of the mortar intaking pipe are looped with a press-tight nut respectively. The mortar-storage tank comprises a tank body and a tank cover. In the center at bottom of the tank body, a mortar-out opening is provided. The mortar-out opening is connected with a diverter through a mortar-out pipe. At the bottom of the tank body, a base is provided. The tank cover is in such a form that an end cover is fixed at top of the tank body, a cover plate is fastened on the end cover, an air inlet and a feed opening are provided on the tank cover. The grouting way comprises drilling hole, clamping the plug or burying the pipe, and configuring grouting devices, and grouting by a plurality of holes connected in parallel. The invention makes the construction for mending concrete fissures by chemical grouting more fine, simple, efficient, easier to operate, more accurate and faster.

Description

(1) Technical field: [0001] The present invention relates to a method for repairing cracks in concrete, especially building concrete, and a device therefor. (two) background technology: [0002] Due to temperature control, concrete ratio, pouring speed, concrete mixing and other problems in the concrete of buildings, cracks of different depths and openings often appear. The appearance of cracks in concrete is often accompanied by water seepage in cracks. Concrete cracks not only affect the safety of concrete structures, water seepage can also cause corrosion of structural steel bars. Concrete cracks are common and harmful diseases of concrete buildings, and must be dealt with effectively. [0003] Concrete cracks generally have small openings, and are usually treated by pouring chemical grout, which is difficult to construct. Its difficulty is mainly manifested in: [0004] 1. The distribution of cracks is complex, including high-altitude parts, underground corridors, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02B65D88/02B65D90/00B65D90/54
Inventor 党玉辉殷国权杨建王正瑶
Owner SINOHYDRO BUREAU 7 CO LTD
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