JPS60102406A - Cut-off work for concrete structure - Google Patents

Abstract

PURPOSE:To ensure cut-off of a leak passage by a method that an insert plate for leak cut-off having a check valve functional piece is filled in the crack of a joint of a concrete structure in a bridged manner and a water stop agent is injected therein. CONSTITUTION:Openings for draining 10 are made between a groove 9 and outflow holes 7 and 8 situated in enlarged sections 5a and 5b of a bendable belt- shaped insert plate for leak cut-off 5, and a check valve functional piece 11 is fitted on the outside of the openings 10. The plate 5 is filled in the crack of a concrete structure joint in a bridged manner. In case of leaking, a water stop agent is injected into the holes 7 and 8 by pressure. The agent pushes open the piece 11 and penetrates into the space where the agent is not yet sufficiently injected, and hardens there which results in the leak prevention.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a system for preventing water leakage by using a flexible water-stop injection plate that is buried in 11 parts of joints of concrete structures such as dams, tunnels, reservoirs, and other offshore structures. This relates to a method for water-stopping concrete structures that easily and reliably seals the roof.

Conventionally, concrete structures have been provided with seam cracks at certain intervals in order to relieve stress caused by thermal expansion, contraction, tectonic movement, or vibration.

Therefore, even if the concrete 4R31 materials on both sides of the crevice change relative to each other, they will not affect each other.

However, part of this seam C1 becomes a water path.

Therefore, various types of water stop plates are buried in order to block this water path (see Figure '1).

However, Figures 1-a and b are 1. A crack in the seam where a band-shaped water stop plate was buried at the end of η is shown as an example of a part of the llii surface.
However, for example, this J will carry out construction work on 11 eels in 10 places. i [t
It is normal for this to occur.

Next, referring to FIGS. 1-a, I+ and FIG. 2 (explanatory diagrams showing water leakage conditions), the causes of water leakage in the conventional example will be explained.

In the conventional example shown in Fig. 1-a, l), J3 is different from the conventional example (, 1 is 21 increments 1-(allergic movement, 2 is the crack 11 part of the seam, 3 is the strip-shaped 11 water board made of plus book or rubber, A circular cross section ζ3r+ is formed on both sides for fixation, and in FIG. is formed.

In FIG. 1-b, a bending part 3G is formed in the crack part 2 for expansion and contraction 1'l.

Fig. 2 is an explanatory diagram of a water leakage state, and shows an example of a faulty buried condition of the band-shaped water stop plate β- as shown in the cross section. A sword installed horizontally at the crack 2 of the seam, on both sides of the strip-shaped well plate, is shown in Figure 2-
The sag is as shown in a.

Therefore, the curved lower part 4 is a floater-)! Moisture tends to accumulate, concrete 1 to clogging after solidifying, poor sealing, and is hollow or unfinished.

At this time, on the upper surface side of the band-shaped water stop plate 3-
- If the clogging is bad, water leakage will occur as shown by the arrow in the cross section of Fig. 2-b of the mold C[1).

In short, water spots will occur around the band-shaped water stop plate unless concrete is poured very carefully and deeply.

In addition, the reaction heat C1 when the concrete 1- hardens and covers the band-shaped waterstop plate, Ω-, solidifies in a state of thermal expansion, or after that, 1
; When the temperature drops to 1 temperature, a gap is formed between the contraction jy C band-shaped water plate support and the concrete 1~, which may become a water channel.

Therefore, conventionalization 41'? There are 11 methods that can be easily implemented in field work and that can reliably achieve prevention 1. .

Captured, the inventors, as a result of their exploration, find themselves on the water road! ] There is a need to inject water to avoid filling and assimilation, but as a means of doing so, 11. : It is possible to set an outlet for the water liquid, but since the strip + l water plate is buried when pouring the 21st concrete, it is especially important to
) Even if the water outflow [] is made smaller, it will easily infiltrate, harden, and cause 110 "1.5 filtration".
-ca-)ta.

It became necessary to solve this problem, and as a result of 11 trials and 111 errors, I came up with a SA method that was extremely effective in preventing IMf.

Next, reference will be made to the method of this invention.

Figure 3-a shows a cross section of a band-shaped water-stop injection plate used in the F method for water-stopping of structures 21 to 11 of this invention. It is made of aluminum, and its appropriate properties are determined depending on the location where it is used. Figure 3-1) is a side view of the same part.

In the figure, 5 is a band-shaped water stop injection plate with a length necessary for the buried part of the concrete 1 to the structure, and 55a and 5b are expanded shaped parts (pulled in the center) on both sides. Liquid flow passage holes 7.8 are set. 5 (1 is a band-shaped part).

A buffer section JG is provided in the center of this 6-tatami water stop injection plate, and this buffer section 5C, in this example, is a portion that corresponds to the crack 2 of the seam, so it has no elasticity. 1, a hollow part 6 is provided. This buffer section is set in various shapes, such as a flexed state, depending on the application. Reference numeral 9 indicates a groove portion formed at a position on the outside of the enlarged portion a, 51), reference numeral 10 indicates an outlet for the water stop liquid, and reference numeral 11 indicates a check valve-like functional body.

In this figure, the shape of the ttlj part that receives this check valve-like function body is formed into four rectangular parts because a plate-shaped check valve-like function body is used for the check valve-like function body 11 in this figure. However, depending on the type and shape of the check valve-like function body used, each jl (for receiving the check valve-like function body of Φ)
There is a chance that l will be formed. For example, a string made of various fibers 411 and 44 diagonally treated with water repellent, or a tubular string,
Square, round, etc. ladder-shaped vortices are formed on the sponge string. This ringing does not require any adhesive, so it is recommended that the insertion opening of the vortex be slightly lowered to prevent it from coming out.

In the above d5, this groove (also used as a reversal valve)
The geometric body uses a string-like check valve-like functional body.

This silk-like check valve-like structure is easily deformed to form an outflow hole by preventing liquid from entering the hole 1 or by pressure from the flow channel hole. The C' of 0, which is formed by a water-repellent treatment that prevents intrusion but retains the permeability of the water-stopping liquid, can easily function as a check valve. (b) In the case of a tubular string, it is also possible to adjust the air in the hollow part.

The check valve-like functional body 1'1 shown in FIG. Apply a pressure-sensitive adhesive to the groove 9, or
A strippable coating is applied to the groove 9 to form a strippable film to prevent the infiltration of cement liquid, but a water stop coating (stripping coating) is applied to the groove 9 to form a strippable film, but a water stop coating (stripping coating) is applied to the groove 9 to form a strippable coating. It's something to be considered.

[Above]L water perspiration board i is made of rubber or plastic book, etc. and has appropriate flexibility.As shown in the figure The channel hole 7.8 (Jl) is formed into a penetrating body over the required length, and one of the flow channel holes 7.8 is provided with a plug 4J, which can be removed and closed during injection. A valve is provided (1) for injecting water from the other side, and a groove 9 provided on the outside of the flow path hole 7.8 has an outlet 10 that communicates with the flow path hole 7.8 to inject water stop liquid. is set over the length of the J-power range,
The above-mentioned check valve-like function body 11 is provided in the groove portion outside the outflow II 10. The exemplary outlet '10 of FIG.
Although we have shown an example of an oval hole, it is not limited to a circular hole.
'c' of t) limited to the outward facing side of part 9
I: “No.

J3, like a check valve (accepts a number of stop bodies (115 parts are enlarged part E), can be installed at the designated location on the 91 side of 51.', but 0: water When installing the pouring plate base, the 1 branch opening, 1 and
C+I Riri, +L, enlarged part 5") a, 511
It is preferable that the side and bottom parts are 1.1iQ 1. The above-mentioned anti-reverse acid function 41'+ is cement (~liquid (]1'
) or water stop solution outflow IT, l 10 hII+ It is.

-C1] After the 6 things have been solidified,
Stop lJ < Knee J input Temporary i is empty due to lack of filling
I) 11 Water leakage due to voids, etc. l) Water leakage caused by cow J,
q () / When this happens, when the water stop liquid is injected under pressure into the passage hole 7.8, the pressure of water and oil from the passage hole 7.8 will fill the gaps and other parts that are insufficiently filled. When the check valve-like functional body 11 is pressed and the naturally hardening water stop liquid is filled into the insufficient skin area and solidified, the water leakage is stopped and water leakage disappears.

Note that the outflow port 10 installed in the h section 9 is the fM section 9.
It is installed at appropriate intervals over the injection length of the water stop solution), but in the condition of the point of use i, j,), and t, there is a cavity A') between the outflow ports. J6 is irritating, and in the unlikely event that the water stop solution is not injected sufficiently, d-3 it is necessary to take into account the possibility of this happening. The measures installed as an example of this are shown in Fig. 4. Fig. 4-a shows an enlargement of one side of the 11-person area on both sides of the waterproof sweat-filled board box. The state of the outlet 10 of the shaped part E5+) (the enlarged shaped part 5a on the warped/1 side is omitted as it is the same) is shown in Figure 4-1. FIG.

Of course, the flow passage holes 7 are installed at appropriate intervals.
8 and a hole-shaped outlet 10 connected to each other are connected at ff/j12.

FIG. 5 shows an enlarged shaped portion 5 in place of the connecting groove 12 in FIG. 4.
11 (enlarged shaped part on the opposite side; 5z! is omitted as well) - This is an example of setting a T-shaped outlet along the length of the water injection area 1゜ Fig. 55 - a(J, 1ifL exit['') to form a cut at +1 is shown in cross section. Therefore, Fig. 5-b is a partial side view of the same side. , - thing C'' is shown in the figure, J-3 (1-(, 13 is the outlet, LI
Because it is formed in a continuous state, no matter what condition the LIJ is used in, there will be two voids and the water stop solution will be completely absorbed. This is preferable because it can be filled into one bottle. As shown in the figure, the geometrical body 11 has a check valve type (the geometrical body 11 has an outflow D 13 , , l-
to form (\reru).

Figure 6 shows outflow [I] 14, 15! 1 water injection plate 5? ? ! shaped part 5 (J enlarged shaped part 51) (Ii in・I
Ill! The enlarged part 58 of l is the same and is omitted).
4, 43, a non-return check installed at the outlet 14.15. The valve-like function body 11 may be provided continuously or partially for each outlet.

In addition, the one with the outlet in the corner of Figure 6 and the one with the outlet in the corner of Figure 3-
Injection may also be carried out by simultaneously using enlarged portions 5a and 5b with outflow ports provided in other portions as shown in FIG.

7th part, the outflow in Figure 6 [2114.15 There is a groove 9 on the outside of Figure 3-4, but
In this case, it is necessary to determine 'Cυ in consideration of corner reinforcement. Considering reinforcement, various types of outlets such as the outlet [1] shown in FIGS. 4 and 5 are provided.

Figure 8 shows an example of the case where a string-shaped check valve-like functional body is used.As mentioned above, various types and shapes of one-shaped check valve-like functional bodies are used. It is the one that can be done.

Figure (Yo, one enlarged shaped part 5b of the stopper injection area on both sides of the water stop injection plate-5-<enlarged shaped part 5 on the opposite side XIl,
8 is a flow passage hole, 17 is an outlet, and is a cross section of an enlarged shaped part showing the state in the direction of the outlet of J. (similarly omitted). The structure shown in FIG. Function 1 Ho 19 is an example of a case where a round string is used, and Ho 19 has a substantially round shape +tp, and the insert 11 has a slightly fluffed shape.

13, the water stop liquid injected into the channel holes 7 and B is composed of organic υ7 type and inorganic hardening liquid (J
Well water fluid is selected depending on the condition of the various structures in which it will be used.

Due to the eddy currents at that time, the viscosity (11) of these liquids increased as time passed, making it easier to inject (+17).
It is necessary to inject C to the pressure.

No J and λba, first J! Approximating the IJ viscosity as llo, the fly distance as 1, and the upper back velocity of viscosity 1α per hour as α,
Viscosity 1μ−μo (1−1−U ()+′,: ＜+:
Ru.

Assuming that the free flow time suitable for use is 1111, t
Injection completed within m ++5 minutes! Then, the injection pressure JP corresponding to VQ is given by the following equation.

'luo Q' Lo (7Cr2 1.o)-2V
)P″= πI” (ls log, (il,, LX jll
l) In the formula, AO is the length of the channel hole, is the volume of the injection cavity, r is the radius of the channel hole, (Is is the acceleration of gravity, i.e., the diameter of the channel hole where the cavity is filled with water stop liquid) Even if it is farthest from the injection side, if the injection IJ force is 1) or more,
The injection can be completed within 11 hours of injection time.

Viscosity-hn ratio per unit second α...0,001, tm =
GOOsec, , V = 2000 cm3, L o =
2000 Cl1l What if I go back? r p t1725--1,725 kg, / cn12
becomes.

nff1 1 rope, in this case, one ≧ 1, 725 J,,
' As cm2, it can be fully incorporated at tnl≧10m1+1.

Therefore, if we lower the pressure ( ), we can shorten Lo and μ
It is sufficient to use a water stop liquid with α of 0 or less.

As explained above, Bimei's water stop 2l method is a method in which a very small scale practical check valve-like functional body is set on the enlarged portions on both sides of the water stop injection plate. The production of the water injection plate is also extremely easy.
Therefore, the faulty J3 (= structure with no fault, only -
Is there any possibility that the liquid solution may have entered the b1 outlet?
F4 composition effectively prevents water leakage by one person and makes it possible to easily seal only water leaks! Characteristics of Mi body
With this, I pressed the check valve-like function body at the Ejin pressure horn, and used 11-Water) 1 buttock easy flow was possible. l-JfI: J of structure]
- There is water construction method C.

[Brief explanation of the drawing]

Figure 1 (a, 1) is a water-stop sectional view of a concrete 1/4 old structure using conventional strip-shaped 11-plate plates, and Figure 2-a, 1] is a water-stop cross-sectional view of a conventional concrete 1/4-plate concrete structure. The pouring cross section t (3) is an explanatory diagram of the state where water cracking has occurred, Figure 3-a is
3-1) is a side view of the same part, and FIG. Outflow [1 of 111! Fig. 4-b is a side view of the same part, and Fig. 5-a is a cross-sectional view of an enlarged shaped part of the water-stop plate showing an example of the state of the water-stop plate. i-plane view of the enlarged shaped part showing an example of the formed part, Fig. 5-1)
is a side view of the same part, Fig. 6 is a sectional view of the enlarged part in an example in which an outlet is provided in the corner near the intersection of the band-like part of the water stop injection plate and the enlarged part, and Fig. 7 Figure 8 is a cross-sectional view of an enlarged shaped part showing an example in which a part is provided outside the outlet in Figure 6. It is a sectional view of an enlarged shaped part showing an example. 1... Concrete structure 2... Cracks in joints 1
Part 11 - Water stop injection plate 5 az 5”...
・Enlarged shaped portion 5d...Striped portion 7.8...Flow path hole 9
．． 1B... Groove 10.13.14.15.17... Outlet 12...
Connecting groove 11.19...Check valve-like 1 geometric body 16...
Corner agent Patent attorney Person l; 15 Yasuyama Figure 3 Figure 6 Indication of voluntary procedure amendment 1, fact A 11 1982 Patent application No. 211 /l/1 B bow 2, name of the invention 21 1~(t4 Water stoppage of structures 1i'7.3, person making amendments 1!1 What relationship Patent applicant 7111Esashi-cho, Artificial District, Osaka City, Osaka Prefecture O"y Co., Ltd. Representative of Osaka Suizuken flR Co., Ltd. Uga Teruo Tokyo Parts Hamesu Oi 7-chome [13o L3 Kai Co., Ltd. 2-A Representative Keiji Nishiyama Department 4, Agent U550 1-J Edobori, Nishi-ku, Osaka 1., l 2mi 5-3o Tomita Pill Shi Osaka (06) 441-
1100 (generation) 7.7. . , 1151.1. -1-1
%0, Specification to be amended: Detailed description of Buddha's invention, brief description of drawings, and drawings. 6. Contents of amendment (1) Ming, III! 1!134JPJ4 line FA To'
Insert the following sentence into 45 b h Ill (D 17j). [In addition, in the example of Fig. 8, it is easy to insert one check valve-like functional body into the U, if/i section 1B. Therefore, an example of the shape that facilitates the insertion operation is shown in Fig. 9 as an enlarged cross section of the enlarged shaped portion 5b. I
) is the expanded shape part, 8 is the channel hole, 17 is the outflow D, '1
8 k; At the end of the eye j, the groove-shaped opening 20 is as shown in FIG.
The circular i^°1 part 18 is formed slightly smaller than the inner part 8 to make it difficult for one function body in the back-eye valve to come off. A wedge anti-opening portion 21 is provided on the outside as a guide for inserting the check valve-like functional body 19. By installing this guide, there is an advantage that the insertion operation of the long circular string-like body can be performed very easily. As the check valve-like functional body 19 inserted in this example, a string-like body having a circular cross section or a hollow cross section other than the above-mentioned throat J3 and 2L lastomers is used. ] (2) 1iiJ page 14, 10th item 1'I',
o = 2000 cm and η. 1! , o=20000In, r=O,b C1
If the difference is 1l, correct it by 1. (3) ll1) Page 16, No. 11 (jth and 12th (-
i1. Add the following sentence between 'l'. I-Figure 9 is an enlarged cross-sectional view of the small/j enlarged shape part of another embodiment of Figure 8. .. Above is Figure 9.

Claims (1)

[Claims] fil 'iiJ Band-shaped still water injection that improves IQ properties 11
1, there are flow passage holes for the eggplant water liquid in the enlarged shaped portions on both sides of the flow sheet 8.
Outflow of pores [1, outer groove of enlarged shape part: J:
/, : are set at the corner near the intersection of the strip part and the enlarged shape part (
J, a check valve-like functional body is buried in the groove or 7" J3 and the corner [water stop injection plate in the boo,]] in the crevice of the citron 1~ structure in a bridging manner, and this Using the water stop injection plate, inject the water stop liquid into each part where it can easily flow. Using the pressure horn, inject the water stop liquid into the flow path hole. Concrete 4i4 water-stopping construction method characterized by press-fitting IJZ water into the water leakage path around the 11 Mizuejin board to seal it like a check valve. f21 Water stop liquid leakage 11 from the 1fii part or corner is
Water stop work for concrete structures 1 to 3'11 according to claim 1, filed in May at appropriate intervals, υ, 0 (3)
Outlets for the water stop liquid in the grooves or corners are provided at appropriate intervals, and a connecting groove is provided at the outlet of the outlet at each interval to connect each outlet.Claim 1 Concrete 1 - Water stop construction method for structures described. (4) A small water construction method for a concrete structure according to claim 1, wherein the outlet of the water stop liquid in the groove or corner is formed in the shape of a continuous cut. (5) The water stop construction method for a concrete structure according to claim 1, wherein the check valve-like functional body is plate-shaped or string-shaped.