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Structure repairing method
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A technology for structures and repair layers, applied in chemical instruments and methods, building maintenance, bridge maintenance, etc., to achieve the effect of short construction period
Inactive Publication Date: 2021-05-11
RESONAC HOLDINGS CORPORATION
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MMA resin and VE resin can be cured by radical polymerization. Compared with epoxy resin, the curing speed is faster, which contributes to shortening the construction period. However, even with these resins, the conventional repair methods still cannot fully meet the modern demand for further shortening the construction period. Require
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no. 1 Embodiment approach ＞
[0062]
[0063] figure 1 It is a flow chart showing an example of the method of repairing a structure according to the first embodiment of the present invention. The repair method according to this embodiment includes a first repair layer forming step S1, a second repair layer forming step S2, a repair layer curing step S3, a first reinforcing layer forming step S4, a reinforcing fiber layer forming step S5, a second reinforcing layer Forming step S6 and reinforcing layer curing step S7. Here, the first reinforcing layer forming step S4, the reinforcing fiber layer forming step S5, the second reinforcing layer forming step S6, and the reinforcing layer curing step S7 are collectively referred to as a reinforcing step. Hereinafter, each of these steps will be described. Furthermore, regarding the radically polymerizable resin composition (A), radically polymerizable resin composition (Ax), filler (B), restoration material (X), and curable resin composition used in this embo...
no. 2 Embodiment approach ＞
[0185] figure 2 It is a flowchart of an example of a repairing method of a structure according to the second embodiment of the present invention. The repair method according to this embodiment includes a first repair layer forming step S1, a second repair layer forming step S2, a repair layer curing step S3, a reinforcing layer forming step S8, and a reinforcing layer curing step S9. Here, the reinforcing layer forming step S8 and the reinforcing layer curing step S9 are collectively referred to as a reinforcing step. The first repair layer forming step S1 , the second repair layer forming step S2 , and the repair layer curing step S3 are the same as those in the first embodiment, so descriptions thereof are omitted here. The details of the radically polymerizable resin composition (A), filler (B), and restoration material (X) are the same as those described in the first embodiment.
[0186] In the reinforcing layer forming step S8, a reinforcing sheet is pasted on the cure...
no. 3 Embodiment approach ＞
[0189] image 3 It is a flow chart of an example of the method of repairing a structure according to the third embodiment of the present invention. The repair method according to this embodiment includes a first repair layer forming step S1, a second repair layer forming step S2, and a repair layer curing step S3. The first repair layer forming step S1, the second repair layer forming step S2, and the repair layer curing step S3 are the same as those in the first and second embodiments.
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Abstract
Provided is a structure repairing method capable of ensuring, when being used for a concrete structure, a short construction period and high reliability in a wide temperature range. The structure repairing method comprises: a first restorative layer forming step for forming a first restorative layer by applying a radical-polymerizable resin composition (A) on a structure; a second restorative layer forming step for forming a second restorative layer by, before curing the first restorative layer, applying a restorative material (X) containing a radical-polymerizable resin composition (Ax) and a filler (B) on the first restorative layer; a restorative layer curing step for curing the radical-polymerizable resin composition (A) and the radical-polymerizable resin composition (Ax), wherein, said (A) and (Ax) each contain a radical-polymerizable resin (a1), a radical-polymerizable unsaturated monomer (a2), a hydroxyl group-containing aromatic tertiary amine (a3), and an organic peroxide (a4), and the percentage content of the total of said (a1) and (a2) in each of the (A) and (Ax) is not less than 75 mass%.
Description
technical field [0001] The present invention relates to methods of repairing structures. Background technique [0002] As methods for repairing and reinforcing damaged or deteriorated parts of buildings or civil engineering structures, methods such as reinforced concretecurling, steel plate curling and overlapping, concrete filling, and carbon fiber methods (for example, Patent Document 1 and Patent Document 2) are widely known. [0003] In recent years, in the field of civil engineering, the aging of social infrastructure required for a period of high economic growth has been regarded as a problem. In particular, in 2032, 65% of road bridges and 47% of tunnels over 2m will be built 50 years after construction. Above, the problem of aging due to annual aging is considered to be more serious than it is now. Furthermore, almost all such aged items are repair items requiring repairs such as seismic reinforcement. In the future, there is a concern that conventional repair met...
Claims
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