CN105214895A - A kind of low-pressure injection method of reinforcing steel bar corrosion inhibitor - Google Patents
A kind of low-pressure injection method of reinforcing steel bar corrosion inhibitor Download PDFInfo
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- CN105214895A CN105214895A CN201510527456.8A CN201510527456A CN105214895A CN 105214895 A CN105214895 A CN 105214895A CN 201510527456 A CN201510527456 A CN 201510527456A CN 105214895 A CN105214895 A CN 105214895A
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- corrosion inhibitor
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Abstract
The invention discloses a kind of low-pressure injection method of reinforcing steel bar corrosion inhibitor, feature is that it adopts low-pressure injection device to carry out low-pressure injection, concrete steps are: first test reinforced concrete structure with steel bar corrosion instrument, find out rusty part, frosted process is carried out to the surface of the rusty part of reinforced concrete structure, reinforcing steel bar corrosion inhibitor is deployed into reinforcing steel bar corrosion inhibitor saturated aqueous solution, to be fixed on the surface of the rusty part after frosted process in low-pressure injection device, by low-pressure injection device, reinforcing steel bar corrosion inhibitor saturated aqueous solution is filled in the reinforced concrete structure of rusty part gradually, advantage adopts this low-pressure injection method can accelerate the seepage velocity of reinforcing steel bar corrosion inhibitor saturated aqueous solution in reinforced concrete structure and deepen length of penetration, and it is easy to operate, safe, simple, in addition, it is little by weather effect, even if run into rainy day, reinforcing steel bar corrosion inhibitor saturated aqueous solution also by rain drop erosion, can not ensure that resistance rust effect, nor can pollute surrounding enviroment, be conducive to environmental protection.
Description
Technical field
The present invention relates to the antirusting treating method of reinforced concrete structure in building field, particularly relate to a kind of low-pressure injection method of reinforcing steel bar corrosion inhibitor.
Background technology
Reinforcement corrosion causes the premature failure of xoncrete structure, is the hot issue of countries in the world common concern always.Cause the reason of steel bar corrosion to be many-sided, except construction quality, mainly reinforced concrete structure suffers in process spontaneous corrosion environment and people to be the impact of the corrosive environment caused under arms.At present, for the existing concrete structure corroding or be in corrosive environment, main restorative procedure has electrochemical rehabilitation, painted concrete corrosion-inhibiting coating and brushing reinforcing steel bar corrosion inhibitor three kinds:
(1) although, electrochemical rehabilitation has available protecting, cost is higher;
(2), painted concrete corrosion-inhibiting coating: can prevent moisture, chlorion, oxygen from invading inside concrete further for newly-built reinforced concrete structure, attractive in appearance and can extending structure service life, but for by the reinforced concrete structure that harmful ion corrodes, then the corrosive ions having infiltrated inside concrete cannot be suppressed the corrosion of reinforcing bar;
(3), brushing reinforcing steel bar corrosion inhibitor: it can postpone the initial time that reinforcing bar gets rusty on the one hand, the reinforcement corrosion speed of development can be slowed down on the other hand, the method is simple to operate, convenient economical again, existing structure can be protected well, and structure is not damaged, it is the very promising safeguard measure of one, but owing to being at present substantially all surface reinforcing steel bar corrosion inhibitor directly being spread upon reinforced concrete structure, allow its naturally osmotic, its seepage velocity slowly and depth as shallow, and it is large by weather effect, if meet the rainy day, the reinforcing steel bar corrosion inhibitor spreading upon bold concrete structural surface is easily diluted by rain drop erosion, greatly affect its resistance rust effect, and certain environmental pollution can be caused.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of seepage velocity, the intensification length of penetration of accelerating reinforcing steel bar corrosion inhibitor, and the low-pressure injection method of little by weather effect, to be beneficial to environmental protection reinforcing steel bar corrosion inhibitor.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of low-pressure injection method of reinforcing steel bar corrosion inhibitor, it adopts low-pressure injection device to carry out low-pressure injection, described low-pressure injection device comprises base, needle tubing, push rod and gland, the lower end of described needle tubing is provided with injection head, perfusion channel is provided with in described base, described injection head and described perfusion channel bolt, the lower end of described push rod is stretched in described needle tubing and lower end is connected with piston, make can relatively rotate but axial restraint between described piston and described push rod, described piston and described needle tubing seal and are slidably matched, the upper end of described push rod is bolted with handle, described gland is screwed onto the upper end of described needle tubing, press mechanism is provided with and for carrying out volume to the liquid in described needle tubing between described push rod and described gland, pressure controlled tune amasss pressure regulating device,
The low-pressure injection method of above-mentioned low-pressure injection device is utilized to comprise following concrete steps:
(1), first with steel bar corrosion instrument, reinforced concrete structure is tested, find out rusty part;
(2), frosted process is carried out to the surface of the rusty part of reinforced concrete structure;
(3), reinforcing steel bar corrosion inhibitor is deployed into reinforcing steel bar corrosion inhibitor saturated aqueous solution;
(4), be fixed on the surface of the rusty part after frosted process by the base in low-pressure injection device by sealing AB glue, and with hold-down screw, base reinforced on the surface of rusty part;
(5) push rod in the needle tubing in low-pressure injection device, is pulled, and amass by the tune between push rod and gland the reinforcing steel bar corrosion inhibitor saturated aqueous solution that required groundwater increment drawn by pressure regulating device, simultaneously press mechanism to the reinforcing steel bar corrosion inhibitor saturated aqueous solution in needle tubing with corresponding pressure;
(6), the injection head of needle tubing lower end to be screwed in the perfusion channel of base and to tighten, then push rod is discharged, under the effect of press mechanism, piston promote gradually reinforcing steel bar corrosion inhibitor saturated aqueous solution by its by perfusion channel low-pressure injection in the reinforced concrete structure of rusty part;
(7), when the reinforcing steel bar corrosion inhibitor saturated aqueous solution in needle tubing has been injected, pull down base from the surface of rusty part, whole low-pressure injection process terminates.
Described tune amasss pressure regulating device and comprises multiple regulating block be set in successively up and down on described push rod, interference fits between described regulating block and described push rod, under external force, described regulating block can rotate or move up and down on described push rod, the outer circumference surface of described regulating block is wholely set location convex tendon, location convex tendon being staggeredly located out at circumferencial direction on upper and lower two adjacent regulating blocks, described push rod is wholely set limited location block, described positive stop is positioned at the below of the regulating block of bottom, positioning table has been wholely set in described gland, described positioning table is arranged in described needle tubing, described positioning table is provided with centre bore, described push rod is axially across described centre bore, the aperture of described centre bore equals or slightly larger than the external diameter of described regulating block, make described regulating block can not pass described centre bore by described location convex tendon through described centre bore, described positioning table is provided with location groove, the upper surface of described positioning table is provided with detent, described detent and described location groove being staggeredly located out and being all connected with described centre bore at circumferencial direction, described location convex tendon axially across described location groove or can withstand in described detent.
Described press mechanism comprises spring, and described spring housing is connected on described push rod, and the lower end of described push rod has been wholely set platform, and described spring top is connected between the lower surface of described positioning table and the upper surface of described platform.
The lower surface of described positioning table is provided with spring groove, and the upper end apical grafting of described spring is in described spring groove.
Many the first reinforcements have been wholely set between the outer circumference surface of the bottom of described push rod and described platform.
Changeover portion has been wholely set between the lower end of described needle tubing and described injection head, the upper surface of described base has been wholely set perfusion section, described perfusion channel to be arranged in described perfusion section and to penetrate described base, the external diameter of described changeover portion is equal with the external diameter of described perfusion section, and the interface of described changeover portion and described perfusion section is arranged with rubber seal ring; Ensure that seal when injection head is connected with perfusion section, prevent reinforcing steel bar corrosion inhibitor saturated aqueous solution from low head injection process, from injection head and perfusion section junction, seepage occurring.
Many the second reinforcements have been wholely set between described perfusion section and the upper surface of described base.
The bottom of described base is provided with the filling cavity be connected with described perfusion channel, the lower ending opening of described filling cavity, the contact area on reinforcing steel bar corrosion inhibitor saturated aqueous solution and rusty part surface when adding perfusion, accelerates the seepage velocity of reinforcing steel bar corrosion inhibitor saturated aqueous solution.
Described base is provided with Lou glue groove on the edge of the surface contact with rusty part, when with sealing AB glue base being fixed on rusty part surperficial, unnecessary sealing AB glue can be extruded from the leakage glue groove at edge, prevents fluid sealant to be squeezed in filling cavity.
Compared with prior art, the invention has the advantages that:
(1) this low-pressure injection method, is adopted can to accelerate the seepage velocity of reinforcing steel bar corrosion inhibitor saturated aqueous solution in reinforced concrete structure and deepen length of penetration, and easy to operate, safe, simple, be particularly suitable for the repairing to certain concrete corrosion point in reinforced concrete structure;
(2), little by weather effect, even if run into rainy day, reinforcing steel bar corrosion inhibitor saturated aqueous solution also can not by rain drop erosion, ensure that resistance rust effect, nor can pollute surrounding enviroment, be conducive to environmental protection;
(3), owing to being provided with press mechanism in the low-pressure injection device that uses in this method and adjusting long-pending pressure regulating device, adjustable groundwater increment and the injection pressure needing the reinforcing steel bar corrosion inhibitor saturated aqueous solution of perfusion, to meet different xoncrete structures or the different local different use amount requirements to reinforcing steel bar corrosion inhibitor saturated aqueous solution, avoid the waste causing reinforcing steel bar corrosion inhibitor saturated aqueous solution, also avoid repeatedly pouring into, easy to use;
(4), the low-pressure injection device structure that uses is simple, and cost is low, and dismounting is safeguarded all more convenient.
Accompanying drawing explanation
Fig. 1 is the sectional view of low-pressure injection device used in the present invention;
Fig. 2 is the top view of the gland in low-pressure injection device of the present invention;
Fig. 3 is the sectional view of A-A in Fig. 2;
Fig. 4 is the perspective view of the base in low-pressure injection device of the present invention;
Fig. 5 is the structural representation of the push rod in low-pressure injection device of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in the figure, a kind of low-pressure injection method of reinforcing steel bar corrosion inhibitor, it adopts low-pressure injection device to carry out low-pressure injection, low-pressure injection device comprises base 1, needle tubing 2, push rod 3 and gland 4, the lower end of needle tubing 2 is provided with injection head 21, changeover portion 22 has been wholely set between the lower end of injection head 21 and needle tubing 2, the upper surface of base 1 has been wholely set perfusion section 11, perfusion channel 12 is provided with in perfusion section 11, perfusion channel 12 penetrates base 1, injection head 21 and perfusion channel 12 bolt, the external diameter of changeover portion 22 is equal with the external diameter of perfusion section 11, changeover portion 22 is arranged with rubber seal ring 5 with the interface of perfusion section 11, many the second reinforcements 13 have been wholely set between perfusion section 11 and the upper surface of base 1, the bottom of base 1 is provided with the filling cavity 14 be connected with perfusion channel 12, the lower ending opening of filling cavity 14, for the edge 15 of the surface contact with rusty part is provided with Lou glue groove 16 on base 1, the lower end of push rod 3 is stretched in needle tubing 2 and lower end is connected with piston 6, make can relatively rotate but axial restraint between piston 6 and push rod 3, piston 6 and needle tubing 2 seal and are slidably matched, the upper end of push rod 3 is bolted with handle 7, gland 4 is screwed onto the upper end of needle tubing 2, press mechanism is provided with and for carrying out volume to the liquid in needle tubing 2 between push rod 3 and gland 4, pressure controlled tune amasss pressure regulating device, long-pending pressure regulating device is adjusted to comprise multiple regulating block 8 be set in successively up and down on push rod 3, interference fits between regulating block 8 and push rod 3, under external force, regulating block 8 can rotate or move up and down on push rod 3, the outer circumference surface of regulating block 8 is wholely set location convex tendon 81, location convex tendon 81 being staggeredly located out at circumferencial direction on upper and lower two adjacent regulating blocks 8, push rod 3 is wholely set limited location block 31, positive stop 31 is positioned at the below of the regulating block 8 of bottom, positioning table 41 has been wholely set in gland 4, positioning table 41 is arranged in needle tubing 2, positioning table 41 is provided with centre bore 42, push rod 3 is axially across centre bore 42, the aperture of centre bore 42 equals or slightly larger than the external diameter of regulating block 8, make regulating block 8 can locate convex tendon 81 through centre bore 42 and can not pass centre bore 42, positioning table 41 is provided with location groove 43, the upper surface of positioning table 41 is provided with detent 44, detent 44 and location groove 43 being staggeredly located out and being all connected with centre bore 42 at circumferencial direction, location convex tendon 81 or can withstand in detent 44 axially across location groove 43, press mechanism comprises spring 9, spring 9 is socketed on push rod 3, the lower end of push rod 3 has been wholely set platform 32, the lower surface of positioning table 41 is provided with spring groove 45, the lower end apical grafting of spring 9 is on the upper surface of platform 32, the upper end apical grafting of spring 9 is in spring groove 45, many the first reinforcements 33 have been wholely set between the outer circumference surface of the bottom of push rod 3 and platform 32,
The low-pressure injection method of above-mentioned low-pressure injection device is utilized to comprise following concrete steps:
(1), first with steel bar corrosion instrument, reinforced concrete structure is tested, find out rusty part;
(2), frosted process is carried out to the surface of the rusty part of reinforced concrete structure;
(3), reinforcing steel bar corrosion inhibitor is deployed into reinforcing steel bar corrosion inhibitor saturated aqueous solution;
(4), be fixed on the surface of the rusty part after frosted process by the base 1 in low-pressure injection device by sealing AB glue, and with hold-down screw, base 1 reinforced on the surface of rusty part;
(5) push rod 3 in the needle tubing 2 in low-pressure injection device, is pulled, and amass by the tune between push rod 3 and gland 4 the reinforcing steel bar corrosion inhibitor saturated aqueous solution that required groundwater increment drawn by pressure regulating device, simultaneously press mechanism to the reinforcing steel bar corrosion inhibitor saturated aqueous solution in needle tubing 2 with corresponding pressure;
(6), the injection head 21 of needle tubing 2 lower end to be screwed in the perfusion channel 12 of base 1 and to tighten, then push rod 3 is discharged, under the effect of press mechanism, piston 6 promotes reinforcing steel bar corrosion inhibitor saturated aqueous solution gradually and is passed through perfusion channel 12 low-pressure injection in the reinforced concrete structure of rusty part;
(7), when the reinforcing steel bar corrosion inhibitor saturated aqueous solution in needle tubing 2 has been injected, pull down base 1 from the surface of rusty part, whole low-pressure injection process terminates.
In above-described embodiment, the low-pressure injection device used carries out volume to the reinforcing steel bar corrosion inhibitor saturated aqueous solution in needle tubing 2, pressure controlled detailed process is: backed out from base 1 by needle tubing 2, then upwards pull push rod 3 to extract reinforcing steel bar corrosion inhibitor saturated aqueous solution, then according to required groundwater increment, when moving the regulating block 8 of relevant position to, rotating push-rod 3 drives regulating block 8 to rotate to make the location convex tendon 81 on this regulating block 8 withstand in the detent 44 of positioning table 41 simultaneously, now, reinforcing steel bar corrosion inhibitor saturated aqueous solution extracts complete, spring 9 is compressed, and corresponding pressure is produced to the reinforcing steel bar corrosion inhibitor saturated aqueous solution in needle tubing 2, then the injection head 21 of needle tubing 2 to be screwed in perfusion channel 12 and to tighten, regulating block 8 is rotated with hand, the location convex tendon 81 on all regulating blocks 8 be positioned at above positioning table 41 is made all to be positioned at the same position of circumferencial direction, then rotating push-rod 3 drives regulating block 8 to rotate, the location convex tendon 81 withstood in detent 44 is made to forward in the groove 43 of location, now, under the elastic force effect of spring 9, reinforcing steel bar corrosion inhibitor saturated aqueous solution in needle tubing 2 penetrates in reinforced concrete structure gradually.
Claims (9)
1. the low-pressure injection method of a reinforcing steel bar corrosion inhibitor, it is characterized in that it adopts low-pressure injection device to carry out low-pressure injection, described low-pressure injection device comprises base, needle tubing, push rod and gland, the lower end of described needle tubing is provided with injection head, perfusion channel is provided with in described base, described injection head and described perfusion channel bolt, the lower end of described push rod is stretched in described needle tubing and lower end is connected with piston, make can relatively rotate but axial restraint between described piston and described push rod, described piston and described needle tubing seal and are slidably matched, the upper end of described push rod is bolted with handle, described gland is screwed onto the upper end of described needle tubing, press mechanism is provided with and for carrying out volume to the liquid in described needle tubing between described push rod and described gland, pressure controlled tune amasss pressure regulating device,
The low-pressure injection method of above-mentioned low-pressure injection device is utilized to comprise following concrete steps:
(1), first with steel bar corrosion instrument, reinforced concrete structure is tested, find out rusty part;
(2), frosted process is carried out to the surface of the rusty part of reinforced concrete structure;
(3), reinforcing steel bar corrosion inhibitor is deployed into reinforcing steel bar corrosion inhibitor saturated aqueous solution;
(4), be fixed on the surface of the rusty part after frosted process by the base in low-pressure injection device by sealing AB glue, and with hold-down screw, base reinforced on the surface of rusty part;
(5) push rod in the needle tubing in low-pressure injection device, is pulled, and amass by the tune between push rod and gland the reinforcing steel bar corrosion inhibitor saturated aqueous solution that required groundwater increment drawn by pressure regulating device, simultaneously press mechanism to the reinforcing steel bar corrosion inhibitor saturated aqueous solution in needle tubing with corresponding pressure;
(6), the injection head of needle tubing lower end to be screwed in the perfusion channel of base and to tighten, then push rod is discharged, under the effect of press mechanism, piston promote gradually reinforcing steel bar corrosion inhibitor saturated aqueous solution by its by perfusion channel low-pressure injection in the reinforced concrete structure of rusty part;
(7), when the reinforcing steel bar corrosion inhibitor saturated aqueous solution in needle tubing has been injected, pull down base from the surface of rusty part, whole low-pressure injection process terminates.
2. the low-pressure injection method of a kind of reinforcing steel bar corrosion inhibitor as claimed in claim 1, it is characterized in that described tune amasss pressure regulating device and comprises multiple regulating block be set in successively up and down on described push rod, interference fits between described regulating block and described push rod, under external force, described regulating block can rotate or move up and down on described push rod, the outer circumference surface of described regulating block is wholely set location convex tendon, location convex tendon being staggeredly located out at circumferencial direction on upper and lower two adjacent regulating blocks, described push rod is wholely set limited location block, described positive stop is positioned at the below of the regulating block of bottom, positioning table has been wholely set in described gland, described positioning table is arranged in described needle tubing, described positioning table is provided with centre bore, described push rod is axially across described centre bore, the aperture of described centre bore equals or slightly larger than the external diameter of described regulating block, make described regulating block can not pass described centre bore by described location convex tendon through described centre bore, described positioning table is provided with location groove, the upper surface of described positioning table is provided with detent, described detent and described location groove being staggeredly located out and being all connected with described centre bore at circumferencial direction, described location convex tendon axially across described location groove or can withstand in described detent.
3. the low-pressure injection method of a kind of reinforcing steel bar corrosion inhibitor as claimed in claim 2, it is characterized in that described press mechanism comprises spring, described spring housing is connected on described push rod, the lower end of described push rod has been wholely set platform, and described spring top is connected between the lower surface of described positioning table and the upper surface of described platform.
4. the low-pressure injection method of a kind of reinforcing steel bar corrosion inhibitor as claimed in claim 3, is characterized in that the lower surface of described positioning table is provided with spring groove, and the upper end apical grafting of described spring is in described spring groove.
5. the low-pressure injection method of a kind of reinforcing steel bar corrosion inhibitor as claimed in claim 3, is characterized in that being wholely set many first reinforcements between the outer circumference surface of the bottom of described push rod and described platform.
6. the low-pressure injection method of a kind of reinforcing steel bar corrosion inhibitor as claimed in claim 1, it is characterized in that being wholely set changeover portion between the lower end of described needle tubing and described injection head, the upper surface of described base has been wholely set perfusion section, described perfusion channel to be arranged in described perfusion section and to penetrate described base, the external diameter of described changeover portion is equal with the external diameter of described perfusion section, and the interface of described changeover portion and described perfusion section is arranged with rubber seal ring.
7. the low-pressure injection method of a kind of reinforcing steel bar corrosion inhibitor as claimed in claim 6, is characterized in that being wholely set many second reinforcements between described perfusion section and the upper surface of described base.
8. the low-pressure injection method of a kind of reinforcing steel bar corrosion inhibitor as claimed in claim 1, is characterized in that the bottom of described base is provided with the filling cavity be connected with described perfusion channel, the lower ending opening of described filling cavity.
9. the low-pressure injection method of a kind of reinforcing steel bar corrosion inhibitor as claimed in claim 1, is characterized in that described base is provided with Lou glue groove on the edge of the surface contact with rusty part.
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| CN201510527456.8A CN105214895B (en) | 2015-08-25 | 2015-08-25 | A kind of low-pressure injection method of reinforcing steel bar corrosion inhibitor |
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| CN201510527456.8A CN105214895B (en) | 2015-08-25 | 2015-08-25 | A kind of low-pressure injection method of reinforcing steel bar corrosion inhibitor |
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Cited By (1)
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