CN109384432A - A kind of automatic grouting technique of reinforced concrete sewer pipe - Google Patents
A kind of automatic grouting technique of reinforced concrete sewer pipe Download PDFInfo
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- CN109384432A CN109384432A CN201811394019.3A CN201811394019A CN109384432A CN 109384432 A CN109384432 A CN 109384432A CN 201811394019 A CN201811394019 A CN 201811394019A CN 109384432 A CN109384432 A CN 109384432A
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- drainage pipeline
- reinforced concrete
- sewer pipe
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/56—Compositions suited for fabrication of pipes, e.g. by centrifugal casting, or for coating concrete pipes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
Abstract
The present invention relates to a kind of automatic grouting technique of reinforced concrete sewer pipe, include the following steps: that step (1) sets up the die for drainage pipeline being made of inner ring and outer ring, surface cleaning is carried out to die for drainage pipeline；Steel ring is put into the middle part of the inner ring and outer ring of die for drainage pipeline by step (2), and inner ring and outer ring side wall offer at least one drainage hole；Step (3) is respectively put into filter in steel ring two sides, and die for drainage pipeline forms shellring coil structures；Step (4), respectively to carrying out rotating uniform filling concrete in the shellring circle of die for drainage pipeline, corresponds to shellring circle by three nozzles respectively using automatic grouting machine；Step (5) carries out vibration and claps；Mold is removed after step (6) concrete initial set；Step (7) maintenance.The present invention provides the automatic grouting techniques of the good reinforced concrete sewer pipe of a kind of efficiently production, impermeable effect.
Description
Technical field
The present invention relates to reinforced concrete sewer pipe field, the automatic grouting work of especially a kind of reinforced concrete sewer pipe
Skill.
Background technique
Drainpipe mainly undertakes the task of the drainings such as rainwater, sewage, farmland discharging-irrigating.Drainpipe be respectively plastic drain-pipe,
Concrete and reinforced concrete pipe.Pipe of concrete is since its structure is simple, at low cost, to be widely used.
Concrete drain tile can cause volume to be received in pouring hardening process due to chemical shrinkage, shrinkage, drying shrinkage etc.
Contracting, shrinkage value are about the 0.04%~0.06% of own vol, and phenomenon has concrete cracking to destroy, concrete permeability resistance is bad
Cause seepage failure.
Concrete drain tile technical requirements than normal concrete require it is higher, it is desirable that high permeability resistant, resistance to pressure, frost resistance,
Durability, and Large Diameter Pipeline requires the requirement of early stage moisture-keeping maintaining higher, the armored concrete drainage technology of current technique production, work
Skill is complicated, and production efficiency is not high, and impervious bad, be easy to cause seepage failure.
Summary of the invention
The present invention is above-mentioned in order to solve the problems, such as, provides a kind of efficiently good reinforcing bar of production, impermeable effect
The automatic grouting technique of concrete drain tile.
The technical solution adopted by the present invention to solve the technical problems is: a kind of automatic grouting of reinforced concrete sewer pipe
Technique, includes the following steps: that step (1) sets up the die for drainage pipeline being made of inner ring and outer ring, carries out table to die for drainage pipeline
Face cleaning；
Steel ring is put into the middle part of the inner ring and outer ring of die for drainage pipeline by step (2), and inner ring and outer ring side wall offer at least one
A drainage hole；
Step (3) is respectively put into filter in steel ring two sides, and die for drainage pipeline forms shellring coil structures；
Step (4) using automatic grouting machine respectively to carrying out rotating uniform filling concrete in the shellring circle of die for drainage pipeline,
Shellring circle is corresponded to by three nozzles respectively；
Step (5) carries out vibration and claps；
Mold is removed after step (6) concrete initial set；
Step (7) maintenance.
Preferably, the automatic grouting machine in the step (4) includes grouting platform；The grouting platform is set to row
Above water pipe mold, there are three grout outlets, grout outlet to connect with the inlet of automatic grouting machine for setting on the platform that is in the milk；Described
Die for drainage pipeline bottom is provided with rotating platform, and die for drainage pipeline is at the uniform velocity rotated by rotating platform, guarantees uniformly grouting.
Preferably, the rotating platform carries out at the uniform velocity spinning movement by driving motor.
Preferably, the bottom of the die for drainage pipeline is provided with pedestal, at least one annular slot is provided on pedestal.
Preferably, impermeable coating, middle layer concrete perfusion is perfused in the ectonexine of the die for drainage pipeline shellring circle.
Preferably, the maintenance of the step (7) is sprinkling maintenance.
Preferably, the impermeable coating is prepared by the raw material of following parts by weight: 5-10 parts of white cement, poly-vinegar acid
40-50 parts of vac emulsion, 5-10 parts of glue, 6-12 parts of powdered whiting, 2-7 parts of air-entrainment, 5-10 parts of swelling agent, additive 5-
10 parts；The additive is prepared by the raw material of following parts by weight: 3-4 parts of hexamethyl cyclotrisiloxane, methacrylic acid three
2-3 parts of fluorine ethyl ester, 1-2 parts of hexadecyltrimethylammonium chloride, 80-90 parts of high density poly propylene, 2-5 parts of naphthalene sulfonate, aggregate
35-45 parts；The swelling agent is prepared by the raw material of following parts by weight: the mixture 25- of ca aluminosilicate and calcium sulphoaluminate
30 parts, 10-20 parts of red mud, 10-15 parts of lithium slag, 4-8 parts of calcium oxide, 3-6 parts of magnesia, 5-8 parts of sodium methyl silicate, dodecyl
2-4 parts of sodium sulphate, 0.2-0.5 parts of ethylene-acrylic acid copolymer, 0.7-1 parts of polycarboxylate water-reducer, 1-3 parts of polypropylene fibre,
8-10 parts of flyash, 5-10 parts of carboxymethyl cellulose.
Further, the impermeable coating is prepared by the raw material of following parts by weight: 9 parts of white cement, poly-vinegar acid second
50 parts of alkene lotion, 6 parts of glue, 7 parts of powdered whiting, 4 parts of air-entrainment, 7 parts of swelling agent, 8 parts of additive.
Further, the additive is prepared by the raw material of following parts by weight: 3 parts of hexamethyl cyclotrisiloxane, first
2 parts of base acrylic acid trifluoro ethyl ester, 2 parts of hexadecyltrimethylammonium chloride, 85 parts of high density poly propylene, 3 parts of naphthalene sulfonate, aggregate
35 parts.
Further, the swelling agent is prepared by the raw material of following parts by weight: ca aluminosilicate and calcium sulphoaluminate
26 parts of mixture, 12 parts of red mud, 11 parts of lithium slag, 6 parts of calcium oxide, 5 parts of magnesia, 6 parts of sodium methyl silicate, lauryl sodium sulfate
3 parts, 0.3 part of ethylene-acrylic acid copolymer, 1 part of polycarboxylate water-reducer, 2 parts by weight of polypropylene fibre, 9 parts by weight of flyash,
9 parts by weight of carboxymethyl cellulose.
The beneficial effects of the present invention are: a kind of automatic grouting technique of reinforced concrete sewer pipe, simple process, production
High-efficient, the reinforced concrete sewer pipe intensity of production is high, and impervious good, prevents the case where causing seepage failure；
Its good penetrant crystalline and micro-expansibility, can not only improve the intensity of concrete, moreover it is possible to improve the compensation performance of swelling agent.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of overall structure diagram of the automatic grouting technique of reinforced concrete sewer pipe of the present invention.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
Embodiment 1
A kind of automatic grouting technique of reinforced concrete sewer pipe includes the following steps: that step (1) is set up by inner ring and outer ring group
At die for drainage pipeline 1, to die for drainage pipeline carry out surface cleaning；
Steel ring 2 is put into 12 middle part of inner ring 11 and outer ring of die for drainage pipeline 1 by step (2), and inner ring 11 is opened with 12 side wall of outer ring
Equipped at least one drainage hole；
Step (3) is respectively put into filter 21 in 2 two sides of steel ring, and die for drainage pipeline 1 forms shellring coil structures；Its filter 21 makes
The material of two sides is spaced from each other, and is interpenetrated；Middle layer of the shellring coil structures therein between two filters 21, respectively every
The la m and outer layer in outside in net 21；
Step (4) using automatic grouting machine respectively to carrying out rotating uniform filling concrete in the shellring circle of die for drainage pipeline 1,
Shellring circle is corresponded to by three nozzles respectively；
Step (5) carries out vibration and claps；It is made firm by ramming using vibrator, combines concrete compaction, eliminate the honeycomb of concrete
Phenomena such as pitted skin, guarantees the quality of concrete component to improve its intensity；
Mold is removed after step (6) concrete initial set；
Step (7) maintenance.
As shown in Figure 1, the automatic grouting machine in the step (4) includes grouting platform 3；The grouting platform 3 is arranged
Above die for drainage pipeline 1, there are three grout outlet 31, the inlets of grout outlet 31 and automatic grouting machine for setting on the platform 3 that is in the milk
Connection；1 bottom of die for drainage pipeline is provided with rotating platform 4, and die for drainage pipeline 1 is at the uniform velocity revolved by rotating platform 4
Turn, guarantees uniformly grouting.
The rotating platform 4 carries out at the uniform velocity spinning movement by driving motor.
Preferably, the bottom of the die for drainage pipeline 1 is provided with pedestal (not shown), it is provided on pedestal (not shown)
At least one annular slot.The engaging corresponding with inner ring 11, outer ring 12, steel ring 2 and filter 21 respectively of its annular slot.
Impermeable coating, middle layer concrete perfusion is perfused in the ectonexine of the 1 shellring circle of die for drainage pipeline.
The maintenance of the step (7) is sprinkling maintenance.
The automatic grouting technique of one of the present embodiment reinforced concrete sewer pipe, simple process, high production efficiency,
The reinforced concrete sewer pipe intensity of production is high, and impervious good, prevents the case where causing seepage failure.
Embodiment 2
A kind of impermeable coating for reinforced concrete sewer pipe, the impermeable coating by following parts by weight raw material preparation and
At: 5 parts of white cement, 40 parts of polyvinyl acetate emulsion, 7 parts of glue, 12 parts of powdered whiting, 6 parts of air-entrainment, 10 parts of swelling agent,
6 parts of additive；Polyvinyl acetate emulsion is with gluing intensity is higher, curing rate is very fast, easy to use, cheap, nontoxic
The features such as safety, non-environmental-pollution；Powdered whiting has that chemical purity is high, inertia is big, is not easy to chemically react, thermal stability
It is good, will not be decomposed at 400 DEG C or less, whiteness is high, oil absorbency is low, index of refraction is low, matter is soft, it is dry, be free of the crystallization water, the low mill of hardness
The advantages that consumption value small, nontoxic, tasteless, odorless, good dispersion；
The additive is prepared by the raw material of following parts by weight: 4 parts of hexamethyl cyclotrisiloxane, methacrylic acid trifluoro second
3 parts of ester, 1 part of hexadecyltrimethylammonium chloride, 80 parts of high density poly propylene, 5 parts of naphthalene sulfonate, 45 parts of aggregate；It joined poly-
Carboxylic acid water reducer hexamethyl cyclotrisiloxane, trifluoroethyl methacrylate, hexadecyltrimethylammonium chloride can be effective
The hydrophobic properties of the surface for improving finished product coating, enhance the quality of coating；
The swelling agent is prepared by the raw material of following parts by weight: 30 parts of the mixture of ca aluminosilicate and calcium sulphoaluminate, red
17 parts of mud, 14 parts of lithium slag, 7 parts of calcium oxide, 4 parts of magnesia, 8 parts of sodium methyl silicate, 4 parts of lauryl sodium sulfate, ethylene-the third
0.5 part of olefin(e) acid copolymer, 0.7 part of polycarboxylate water-reducer, 1 part of polypropylene fibre, 8 parts of flyash, 5 parts of magnesia.
Ca aluminosilicate is mixed with calcium sulphoaluminate, enhances expansion effect, meanwhile, have also combined calcium oxide and oxidation
Magnesium expansion sources, act synergistically, and improve compensation ability.Gu sulphur waste residue mainly contain SiO2, Al2O3, Fe2O3, CaO, SO3,
F-CaO, and containing a certain amount of anhydrous CaSO4 and a small amount of MgO etc., in concrete hydration reaction generate a large amount of entringite and
Cause Behavior of Hardened Cement Paste to expand, further increases compensation ability.Red mud has that cementing hole rack-like structure, hole be more, large specific surface area
Etc. features containing SiO2, Al2O3 etc. in lithium slag, compensation ability can be improved and containing Al2O3, Fe2O3, CaO etc. in its ingredient
With early strength, later strength.By calcium oxide, so that calcium oxide surface is formed composite membrane, efficiently controlled hydration rate, subtracted
Speed of expansion is delayed, has made most of plastic stage for expanding and occurring after concrete generates intensity, improve expansion.Methyl
Sodium metasilicate has water retention, as aquation carries out slow release moisture, provides water source for calcium oxide, promotes expansion hair
It is raw.Furthermore it is compounded with magnesia, the expansion time can be extended, effective compensation concrete early-age shrinkage and later period shrink, effectively
The pre- cracking-proof in ground generates.In addition, sodium tripolyphosphate plays deferred action, calcium oxide expansion in solid sulphur waste residue and red mud can be slowed down and made
With making the expansion effect of swelling agent more preferably.Sodium methyl silicate has good penetrant crystalline and micro-expansibility, can not only improve
The intensity of concrete, moreover it is possible to improve the compensation performance of swelling agent.
Its additive plays foaming effect, can be formed in concrete tiny, equally distributed and remained to after curing
The defects of keeping microbubble, can compensate for the sedimentation contraction of raw material components, greatly reduce crackle, extends the service life, polycarboxylic acids diminishing
The effect of agent, raising water-reducing agent, and excellent expansion character.
The test of 3 anti-permeability performance of embodiment
According to the regulation of GB50164 " Standard for quality control of concrete ", the anti-permeability performance of test group 1- group 2, comparative example 1-4.
Test method is to prepare reinforced concrete sewer pipe using different process, maintenance tested armored concrete after 28 days
The anti-permeability performance of drainpipe.
Wherein, group 1 is experimental group, and steel is made using the method in embodiment 1 in the impermeable coating obtained in embodiment 2
Reinforced concrete drainage pipe；Comparative example 1 is used to be only to fill draining outer tube layer with 1 identical impermeable coating of group and method, difference
Infuse impermeable coating；Comparative example 2 is used to be only to prevent draining inner tube layer perfusion with 1 identical impermeable coating of group and method, difference
Seep coating；It is identical as group 1 that the additive, other compositions and method are not added in 3 impermeable coating of comparative example；4 antiseepage of comparative example
It is identical as group 1 that the swelling agent, other compositions and method are not added in coating；It is not added in 5 impermeable coating of comparative example described outer
Add agent and swelling agent, other compositions and method are identical as group 1；Impermeable coating is not perfused for 6 ectonexine of comparative example.
Test result is as follows table:
| Group | Impermeability pressure/MPa | Permeated height ratio |
| Group 1 | 1.44 | 13.9% |
| Comparative example 1 | 0.55 | 34.1% |
| Comparative example 2 | 0.49 | 35.7% |
| Comparative example 3 | 1.02 | 20.4% |
| Comparative example 4 | 0.89 | 21.8% |
| Comparative example 5 | 0.62 | 29.1% |
| Comparative example 6 | 0.38 | 40.2% |
It can be seen that having the anti-permeability performance significantly improved using reinforced concrete sewer pipe made from the method for the invention.
Present invention uses concrete special additives, control water-cement ratio, improve drainpipe quality, manage greatly for consideration
The influence that diameter concrete drain tile conserves after forming to product early stage, to reach and reduce the thermal energy of aquation early period generation.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of automatic grouting technique of reinforced concrete sewer pipe, which comprises the steps of: step (1) is set up
The die for drainage pipeline being made of inner ring and outer ring carries out surface cleaning to die for drainage pipeline；
Steel ring is put into the middle part of the inner ring and outer ring of die for drainage pipeline by step (2), and inner ring and outer ring side wall offer at least one
A drainage hole；
Step (3) is respectively put into filter in steel ring two sides, and die for drainage pipeline forms shellring coil structures；
Step (4) using automatic grouting machine respectively to carrying out rotating uniform filling concrete in the shellring circle of die for drainage pipeline,
Shellring circle is corresponded to by three nozzles respectively；
Step (5) carries out vibration and claps；
Die for drainage pipeline is removed after step (6) concrete initial set；
Step (7) maintenance.
2. a kind of automatic grouting technique of reinforced concrete sewer pipe according to claim 1, which is characterized in that the step
Suddenly the automatic grouting machine in (4) includes grouting platform；The grouting platform is set to above die for drainage pipeline, is in the milk on platform
There are three grout outlet, grout outlets to connect with the inlet of automatic grouting machine for setting；The die for drainage pipeline bottom is provided with rotation
Turn platform, die for drainage pipeline is at the uniform velocity rotated by rotating platform, guarantees uniformly grouting.
3. a kind of automatic grouting technique of reinforced concrete sewer pipe according to claim 2, which is characterized in that described
Rotating platform carries out at the uniform velocity spinning movement by driving motor.
4. a kind of automatic grouting technique of reinforced concrete sewer pipe according to claim 1, which is characterized in that the row
The bottom of water pipe mold is provided with pedestal, at least one annular slot is provided on pedestal.
5. a kind of automatic grouting technique of reinforced concrete sewer pipe according to claim 1, which is characterized in that the row
Impermeable coating, middle layer concrete perfusion is perfused in the ectonexine of water pipe mold shellring circle.
6. a kind of automatic grouting technique of reinforced concrete sewer pipe according to claim 1, which is characterized in that described
The maintenance of step (7) is sprinkling maintenance.
7. a kind of automatic grouting technique of reinforced concrete sewer pipe according to claim 5, which is characterized in that described
Impermeable coating is prepared by the raw material of following parts by weight: 5-10 parts of white cement, 40-50 parts of polyvinyl acetate emulsion, glue 5-
10 parts, 6-12 parts of powdered whiting, 2-7 parts of air-entrainment, 5-10 parts of swelling agent, 5-10 parts of additive；
The additive is prepared by the raw material of following parts by weight: 3-4 parts of hexamethyl cyclotrisiloxane, methacrylic acid trifluoro
2-3 parts of ethyl ester, 1-2 parts of hexadecyltrimethylammonium chloride, 80-90 parts of high density poly propylene, 2-5 parts of naphthalene sulfonate, aggregate 35-
45 parts；
The swelling agent is prepared by the raw material of following parts by weight: 25-30 parts of the mixture of ca aluminosilicate and calcium sulphoaluminate,
10-20 parts of red mud, 10-15 parts of lithium slag, 4-8 parts of calcium oxide, 3-6 parts of magnesia, 5-8 parts of sodium methyl silicate, dodecyl sulphate
2-4 parts of sodium, 0.2-0.5 parts of ethylene-acrylic acid copolymer, 0.7-1 parts of polycarboxylate water-reducer, 1-3 parts of polypropylene fibre, fine coal
It is 8-10 parts grey, 5-10 parts of carboxymethyl cellulose.
8. a kind of automatic grouting technique of reinforced concrete sewer pipe according to claim 7, which is characterized in that described
Coating is prepared by the raw material of following parts by weight: 9 parts of white cement, 50 parts of polyvinyl acetate emulsion, 6 parts of glue, heavy carbonic acid
7 parts of calcium, 4 parts of air-entrainment, 7 parts of swelling agent, 8 parts of additive.
9. a kind of automatic grouting technique of reinforced concrete sewer pipe according to claim 7, which is characterized in that described outer
Agent is added to be prepared by the raw material of following parts by weight: 3 parts of hexamethyl cyclotrisiloxane, 2 parts of trifluoroethyl methacrylate, 16
2 parts of alkyl trimethyl ammonium chloride, 85 parts of high density poly propylene, 3 parts of naphthalene sulfonate, 35 parts of aggregate.
10. a kind of automatic grouting technique of reinforced concrete sewer pipe according to claim 7, which is characterized in that described
Swelling agent be prepared by the raw material of following parts by weight: 12 parts of 26 parts of mixture, red mud, the lithium of ca aluminosilicate and calcium sulphoaluminate
11 parts of slag, 6 parts of calcium oxide, 5 parts of magnesia, 6 parts of sodium methyl silicate, 3 parts of lauryl sodium sulfate, ethylene-acrylic acid copolymer
0.3 part, 1 part of polycarboxylate water-reducer, 2 parts by weight of polypropylene fibre, 9 parts by weight of flyash, 9 parts by weight of carboxymethyl cellulose.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394019.3A CN109384432A (en) | 2018-11-21 | 2018-11-21 | A kind of automatic grouting technique of reinforced concrete sewer pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811394019.3A CN109384432A (en) | 2018-11-21 | 2018-11-21 | A kind of automatic grouting technique of reinforced concrete sewer pipe |
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| CN108424690A (en) * | 2018-04-02 | 2018-08-21 | 张庆 | A kind of hydrophobic anti-leakage powdery paints and preparation method thereof |
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|---|---|---|---|---|
| CN101992500A (en) * | 2009-08-31 | 2011-03-30 | 朝阳市天龙大型水泥管道（集团）有限公司 | Concrete pipe platform vibration moulding process and device thereof |
| CN101664961A (en) * | 2009-10-01 | 2010-03-10 | 瑞安市杭瑞管业有限公司 | Manufacturing technique of reinforced concrete drain pipe |
| CN202742516U (en) * | 2012-09-25 | 2013-02-20 | 湖南交泰建材有限公司 | Mortar stirring and grouting system |
| CN105670421A (en) * | 2016-04-05 | 2016-06-15 | 刘高志 | Architectural water-impermeable pollution-resistant paint and preparation method thereof |
| CN106348644A (en) * | 2016-08-19 | 2017-01-25 | 桂林华越环保科技有限公司 | Compound concrete expanding agent |
| CN106759782A (en) * | 2016-11-26 | 2017-05-31 | 浙江宏泰构件有限公司 | Concrete drain tile |
| CN108189214A (en) * | 2018-03-10 | 2018-06-22 | 浙江巨通管业有限公司 | A kind of reinforced concrete sewer pipe production line and its production method |
| CN108424690A (en) * | 2018-04-02 | 2018-08-21 | 张庆 | A kind of hydrophobic anti-leakage powdery paints and preparation method thereof |
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