CN112830751A - High-molecular plugging grouting material, and preparation method and construction method thereof - Google Patents
High-molecular plugging grouting material, and preparation method and construction method thereof Download PDFInfo
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- CN112830751A CN112830751A CN202110294585.2A CN202110294585A CN112830751A CN 112830751 A CN112830751 A CN 112830751A CN 202110294585 A CN202110294585 A CN 202110294585A CN 112830751 A CN112830751 A CN 112830751A
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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
- C04B28/06—Aluminous cements
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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
- 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
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Abstract
The invention discloses a high-molecular plugging grouting material, a preparation method and a construction method thereof, belonging to the field of building materials. Comprises 35 to 45 percent of Portland cement, 30 to 40 percent of quick-hardening sulphoaluminate cement, 10 to 20 percent of quartz sand, 0.5 to 2 percent of decomposed latex powder, 1 to 5 percent of infiltration crystallization master batch, 0.5 to 5 percent of micro-expanding agent, 0.1 to 1 percent of defoaming agent and 0.5 to 2 percent of high-efficiency water reducing agent. The high molecular plugging grouting material has small shrinkage after curing and good bonding property with concrete. The plugging agent can be suitable for plugging cement bases and sand bases and also for plugging concrete, has the effects of reverse osmosis crystallization repair, compaction and reinforcement on concrete structure cracks, sand holes and other diseases, and has good tensile strength, durability and stability. The raw material source is rich, the usage amount is small, the environmental pollution is less, the operation is safe and convenient, the pressure injection equipment is simple, and the grouting investment is greatly saved.
Description
Technical Field
The invention relates to the field of building materials, in particular to a high-molecular plugging grouting material, a preparation method and a construction method thereof.
Background
In the solidification waterproof capital construction of roads, tunnels, protective riverways and the like, the plugging problems of tunnel water burst, foundation pit water leakage and the like are often encountered in the construction stage. In the using process, due to the erosion of natural disasters and the rolling of road surfaces, leaks and foundation pits are easy to appear, so the plugging grouting technology is more and more emphasized by the civil engineering field. The plugging grouting is mainly to fill the waterproof material with adhesive property into the foundation pit or the seam, and the effect of leak repairing can be achieved after drying.
For example, publication No. CN104261749A discloses a cement-based material with high expansion performance and its application, wherein the high molecular polymer with expansion function is mixed with fillers such as water reducing agent and sand, and then filled. The high-strength micro-expansion grouting material disclosed in publication No. CN102924019A is prepared by adding defoamer, water reducing agent and methyl cellulose (thickening effect) into sulphoaluminate cement or high-alumina cement and calcium sulphoaluminate as an expanding agent. The grouting binding material and the performance parameter detection method thereof disclosed in the publication No. CN108439905A are characterized in that cement, aggregate, admixture, rubber powder, a high-efficiency water reducing agent, an anti-cracking capsule, a defoaming agent, a plastic expanding agent, a hardening expanding agent, an early strength agent, a slump retaining agent and fiber are added and mixed. Wherein the rubber powder is re-dispersible latex powder composed of vinyl acetate ethylene copolymer and vinyl acrylate ethylene copolymer. Wherein the plastic expanding agent is aluminum powder, urea or EEA plastic expanding agent. The hardening expanding agent is UEA, AEA, CEA, HCSA or magnesia expanding agent, and the grouting binding material has both expanding and adhering functions. Most of the materials have good leak repairing effect on base materials such as cement, mortar and the like, but most of expansion materials have different expansion coefficients and different bonding effects of adhesives, so that the selection of different components and the addition of different contents have different adaptability to concrete bases and different flowability, and most of the solidification effect is fixed.
Disclosure of Invention
In order to solve the problems, the invention provides the high-molecular plugging grouting material which has good adaptability to a concrete base layer, high adhesive force, micro-expansion, solidification adjustment and cracking resistance.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the high-molecular plugging grouting material comprises the following components in percentage by weight: 35-45% of Portland cement, 30-40% of quick-hardening sulphoaluminate cement, 10-20% of quartz sand, 0.5-2% of resolvent latex powder, 1-5% of infiltration crystallization master batch, 0.5-5% of micro-expanding agent, 0.1-1% of defoaming agent and 0.5-2% of high-efficiency water reducing agent.
Further, the high-molecular plugging grouting material comprises the following components in percentage by weight: 38-40% of silicate cement, 35-40% of quick-hardening sulphoaluminate cement, 12-18% of quartz sand, 0.8-1.5% of resolvent latex powder, 1-3% of infiltration crystallization master batch, 1-3% of micro-expanding agent, 0.2-0.5% of defoaming agent and 0.8-1.5% of high-efficiency water reducing agent.
Further, the high-molecular plugging grouting material comprises the following components in percentage by weight: 40% of Portland cement, 39% of quick-hardening sulphoaluminate cement, 15% of quartz sand, 1% of resolvent latex powder, 2% of infiltration crystallization master batch, 1.5% of micro-expanding agent, 0.5% of defoaming agent and 1% of high-efficiency water reducing agent.
Further, the resol latex powder is a polymer formed by vinyl acetate and vinyl versatate and/or ethylene and/or acrylate.
Further, the polymer is a binary or ternary polymer.
Further, the micro-expanding agent is an ettringite-lime composite expanding agent.
Further, the defoaming agent is a cement mortar defoaming agent obtained by the reaction of polyether and fatty alcohol; the high-efficiency water reducing agent is a melamine water reducing agent.
The invention also provides a preparation method of the high-molecular plugging grouting material, which comprises the following steps:
(1) fully mixing the re-decomposed latex powder, the defoaming agent, the high-efficiency water reducing agent, the micro-expanding agent and the infiltration crystallization master batch to obtain a primary mixed material;
(2) then adding fast-hardening sulphoaluminate cement and quartz sand into the primary mixed material and mixing to obtain a secondary mixed material;
(3) and adding portland cement into the second mixed material and mixing to obtain the high-molecular plugging grouting material.
Further, the mixing time in the step (1), the step (2) and the step (3) is 10-60 min.
The invention also provides a construction method for plugging grouting material by utilizing the polymer, which comprises the following steps:
mixing the high-molecular plugging grouting material with water to obtain a slurry, grouting (injecting) the slurry into the cavity through a grouting (injecting) pump, and starting grouting under a low-pressure condition;
secondly, after grouting, the grouting pressure is slowly increased after the grout begins to flow;
injecting a sufficient amount of slurry to form a curtain; and (5) plugging the cavity part, and drying.
The invention relates to a high-molecular plugging grouting material, a preparation method and a construction method thereof, which have the beneficial effects that:
(1) the ettringite-lime composite micro-expanding agent and the redissolved latex powder are added, and the plugging grouting material has higher expansion coefficient and good bonding performance through scientific compatibility. After being mixed and proportioned with the infiltration crystallization master batch, the silicate cement, the fast hardening sulphoaluminate cement and the quartz sand, the plugging agent is not only suitable for plugging cement bases and sand bases, but also suitable for plugging concrete, and has the effects of infiltration crystallization repair, compaction and reinforcement on diseases such as concrete structure cracks, sand holes and the like.
(2) The invention has the characteristics of good water resistance, micro-expansibility and quick solidification, has good adaptability with the base layer after solidification, can resist a certain amount of deformation of the base layer, has good anti-cracking performance and high adhesive force with the base layer. The water-cement ratio is adjusted, so that the irrigation performance and the solidification time can be regulated and controlled.
(3) The high molecular plugging grouting material has small shrinkage after curing and good bonding property with concrete. The consolidation body has certain compressive and tensile strength and good durability and stability.
(4) The high-molecular plugging grouting material has the advantages of rich raw material sources, small usage amount, less environmental pollution, safe and convenient operation, simple pressure grouting equipment and great saving of grouting investment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a plot of a constant current, potential versus time curve analysis in accordance with the present invention;
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings.
Example 1
The high molecular plugging grouting material consists of Portland cement 45 wt%, fast hardening sulphoaluminate cement 30 wt%, quartz sand 20 wt%, decomposed latex powder 0.5 wt%, permeating and crystallizing mother material 1 wt%, micro expanding agent 0.5 wt%, defoaming agent 1 wt% and high efficiency water reducing agent 2 wt%.
In this embodiment, the resoluble latex powder is modified emulsion powder obtained by performing a binary polymerization reaction on vinyl acetate and vinyl versatate and performing spray drying.
In this embodiment, the micro-expanding agent is an ettringite-lime composite expanding agent. The high-performance expanding agent can achieve the same effect as the conventional expanding agent only by adding a small amount of the expanding agent, thereby reducing the cost and reducing cracks, drying shrinkage cracks and self-shrinkage cracks caused by the volume change of the general building and civil engineering structure.
In this example, the infiltration crystallization master batch is an inorganic silica cement-based infiltration crystallization type active master batch. The master batch is used for producing a core material of a cement-based permeable crystallization type waterproof coating. The active master batch is mixed into base materials such as cement and the like to form a powdery inorganic permeable waterproof material, and the powdery inorganic permeable waterproof material can be mixed into concrete through a coating or directly used as a waterproof agent to enhance the impermeability of the concrete. The action mechanism is that a plurality of active chemical substances contained in the waterproof material permeate into the concrete by taking water as a carrier, and the active chemical substances in the concrete generate chemical reaction to form crystals to fill capillary channels, so that the effects of continuous impermeability and water resistance are achieved.
In the embodiment, the defoaming agent is a cement mortar defoaming agent obtained by reacting polyether with fatty alcohol; the high-efficiency water reducing agent is a melamine water reducing agent.
A preparation method of a high-molecular plugging grouting material comprises the following steps:
(1) fully mixing the resoluble latex powder, the defoaming agent, the high-efficiency water reducing agent, the micro-expanding agent and the infiltration crystallization master batch for 20-30min to obtain a primary mixed material;
(2) then adding the fast hardening sulphoaluminate cement and the quartz sand into the primary mixed material and mixing for about 30min to obtain a secondary mixed material;
(3) and adding portland cement into the second mixed material, and mixing for 20-30 minutes to obtain the high-molecular plugging grouting material.
Example 2
The high molecular plugging grouting material consists of Portland cement 35 wt%, fast hardening sulphoaluminate cement 40 wt%, quartz sand 10 wt%, decomposed latex powder 2 wt%, permeating and crystallizing mother material 5 wt%, micro swelling agent 5 wt%, defoaming agent 1 wt% and high efficiency water reducing agent 2 wt%.
In this embodiment, the resoluble latex powder is modified emulsion powder obtained by subjecting vinyl acetate, vinyl versatate and ethylene to a ternary polymerization reaction and spray drying.
In this embodiment, the micro-expanding agent is an ettringite-lime composite expanding agent. The high-performance expanding agent can achieve the same effect as the conventional expanding agent only by adding a small amount of the expanding agent, thereby reducing the cost and reducing cracks, drying shrinkage cracks and self-shrinkage cracks caused by the volume change of the general building and civil engineering structure.
In this example, the infiltration crystallization master batch is an inorganic silica cement-based infiltration crystallization type active master batch. The master batch is used for producing a core material of a cement-based permeable crystallization type waterproof coating. The active master batch is mixed into base materials such as cement and the like to form a powdery inorganic permeable waterproof material, and the powdery inorganic permeable waterproof material can be mixed into concrete through a coating or directly used as a waterproof agent to enhance the impermeability of the concrete. The action mechanism is that a plurality of active chemical substances contained in the waterproof material permeate into the concrete by taking water as a carrier, and the active chemical substances in the concrete generate chemical reaction to form crystals to fill capillary channels, so that the effects of continuous impermeability and water resistance are achieved.
In the embodiment, the defoaming agent is a cement mortar defoaming agent obtained by reacting polyether with fatty alcohol; the high-efficiency water reducing agent is a melamine water reducing agent.
A preparation method of a high-molecular plugging grouting material comprises the following steps:
(1) fully mixing the resoluble latex powder, the defoaming agent, the high-efficiency water reducing agent, the micro-expanding agent and the infiltration crystallization master batch for 20-30min to obtain a primary mixed material;
(2) then adding the fast hardening sulphoaluminate cement and the quartz sand into the primary mixed material and mixing for about 30min to obtain a secondary mixed material;
(3) and adding portland cement into the second mixed material, and mixing for 20-30 minutes to obtain the high-molecular plugging grouting material.
Example 3
The high molecular plugging grouting material consists of Portland cement 38 wt%, fast hardening sulphoaluminate cement 36 wt%, quartz sand 18 wt%, decomposed emulsion powder 0.8 wt%, permeating and crystallizing mother material 3 wt%, micro swelling agent 3 wt%, defoaming agent 0.4 wt% and high efficiency water reducing agent 0.8 wt%.
In this embodiment, the resoluble latex powder is modified emulsion powder obtained by subjecting vinyl acetate, vinyl versatate and acrylate to a ternary polymerization reaction and spray drying.
In this embodiment, the micro-expanding agent is an ettringite-lime composite expanding agent. The high-performance expanding agent can achieve the same effect as the conventional expanding agent only by adding a small amount of the expanding agent, thereby reducing the cost and reducing cracks, drying shrinkage cracks and self-shrinkage cracks caused by the volume change of the general building and civil engineering structure.
In this example, the infiltration crystallization master batch is an inorganic silica cement-based infiltration crystallization type active master batch. The master batch is used for producing a core material of a cement-based permeable crystallization type waterproof coating. The active master batch is mixed into base materials such as cement and the like to form a powdery inorganic permeable waterproof material, and the powdery inorganic permeable waterproof material can be mixed into concrete through a coating or directly used as a waterproof agent to enhance the impermeability of the concrete. The action mechanism is that a plurality of active chemical substances contained in the waterproof material permeate into the concrete by taking water as a carrier, and the active chemical substances in the concrete generate chemical reaction to form crystals to fill capillary channels, so that the effects of continuous impermeability and water resistance are achieved.
In the embodiment, the defoaming agent is a cement mortar defoaming agent obtained by reacting polyether with fatty alcohol; the high-efficiency water reducing agent is a melamine water reducing agent.
A preparation method of a high-molecular plugging grouting material comprises the following steps:
(1) fully mixing the resoluble latex powder, the defoaming agent, the high-efficiency water reducing agent, the micro-expanding agent and the infiltration crystallization master batch for 20-30min to obtain a primary mixed material;
(2) then adding the fast hardening sulphoaluminate cement and the quartz sand into the primary mixed material and mixing for about 30min to obtain a secondary mixed material;
(3) and adding portland cement into the second mixed material, and mixing for 20-30 minutes to obtain the high-molecular plugging grouting material.
Example 4
The high molecular plugging grouting material consists of Portland cement 40 wt%, fast hardening sulphoaluminate cement 35 wt%, quartz sand 18 wt%, decomposed latex powder 1.5 wt%, permeating and crystallizing mother material 2 wt%, micro expanding agent 2 wt%, defoaming agent 0.5 wt% and high efficiency water reducing agent 1 wt%.
In this embodiment, the resoluble latex powder is modified emulsion powder obtained by subjecting vinyl acetate and vinyl versatate to a binary polymerization reaction and spray drying.
In this embodiment, the micro-expanding agent is an ettringite-lime composite expanding agent. The high-performance expanding agent can achieve the same effect as the conventional expanding agent only by adding a small amount of the expanding agent, thereby reducing the cost and reducing cracks, drying shrinkage cracks and self-shrinkage cracks caused by the volume change of the general building and civil engineering structure.
In this example, the infiltration crystallization master batch is an inorganic silica cement-based infiltration crystallization type active master batch. The master batch is used for producing a core material of a cement-based permeable crystallization type waterproof coating. The active master batch is mixed into base materials such as cement and the like to form a powdery inorganic permeable waterproof material, and the powdery inorganic permeable waterproof material can be mixed into concrete through a coating or directly used as a waterproof agent to enhance the impermeability of the concrete. The action mechanism is that a plurality of active chemical substances contained in the waterproof material permeate into the concrete by taking water as a carrier, and the active chemical substances in the concrete generate chemical reaction to form crystals to fill capillary channels, so that the effects of continuous impermeability and water resistance are achieved.
In the embodiment, the defoaming agent is a cement mortar defoaming agent obtained by reacting polyether with fatty alcohol; the high-efficiency water reducing agent is a melamine water reducing agent.
A preparation method of a high-molecular plugging grouting material comprises the following steps:
(1) fully mixing the resoluble latex powder, the defoaming agent, the high-efficiency water reducing agent, the micro-expanding agent and the infiltration crystallization master batch for 20-30min to obtain a primary mixed material;
(2) then adding the fast hardening sulphoaluminate cement and the quartz sand into the primary mixed material and mixing for about 30min to obtain a secondary mixed material;
(3) and adding portland cement into the second mixed material, and mixing for 20-30 minutes to obtain the high-molecular plugging grouting material.
Example 5
The high molecular plugging grouting material consists of Portland cement 40 wt%, fast hardening sulphoaluminate cement 39 wt%, quartz sand 15 wt%, decomposed latex powder 1 wt%, permeating and crystallizing mother material 2 wt%, micro swelling agent 1.5 wt%, defoaming agent 0.5 wt% and high efficiency water reducing agent 1 wt%.
In this embodiment, the resoluble latex powder is modified emulsion powder obtained by subjecting vinyl acetate and vinyl versatate to a binary polymerization reaction and spray drying.
In this embodiment, the micro-expanding agent is an ettringite-lime composite expanding agent. The high-performance expanding agent can achieve the same effect as the conventional expanding agent only by adding a small amount of the expanding agent, thereby reducing the cost and reducing cracks, drying shrinkage cracks and self-shrinkage cracks caused by the volume change of the general building and civil engineering structure.
In this example, the infiltration crystallization master batch is an inorganic silica cement-based infiltration crystallization type active master batch. The master batch is used for producing a core material of a cement-based permeable crystallization type waterproof coating. The active master batch is mixed into base materials such as cement and the like to form a powdery inorganic permeable waterproof material, and the powdery inorganic permeable waterproof material can be mixed into concrete through a coating or directly used as a waterproof agent to enhance the impermeability of the concrete. The action mechanism is that a plurality of active chemical substances contained in the waterproof material permeate into the concrete by taking water as a carrier, and the active chemical substances in the concrete generate chemical reaction to form crystals to fill capillary channels, so that the effects of continuous impermeability and water resistance are achieved.
In the embodiment, the defoaming agent is a cement mortar defoaming agent obtained by reacting polyether with fatty alcohol; the high-efficiency water reducing agent is a melamine water reducing agent.
A preparation method of a high-molecular plugging grouting material comprises the following steps:
(1) fully mixing the resoluble latex powder, the defoaming agent, the high-efficiency water reducing agent, the micro-expanding agent and the infiltration crystallization master batch for 20-30min to obtain a primary mixed material;
(2) then adding the fast hardening sulphoaluminate cement and the quartz sand into the primary mixed material and mixing for about 30min to obtain a secondary mixed material;
(3) and adding portland cement into the second mixed material, and mixing for 20-30 minutes to obtain the high-molecular plugging grouting material.
Performance testing
The performance of the TF polymer leaking stoppage grouting material is detected.
Flow properties
The TF polymer leaking stoppage grouting material can fill the water leaking part of the cavity by means of a grouting material device through a perforation method during construction to achieve a self-compaction state, so that the TF polymer leaking stoppage grouting material is required to have good fluidity, the fluidity is required to be more than 260mm, meanwhile, the fluidity loss is required to be reduced as much as possible, and sufficient construction time is guaranteed. The properties of the grouting material mixture prepared with a water cement ratio of 0.14 are shown in Table 1.
TABLE 1 grouting flow Properties
As can be seen from Table 1, good fluidity can be achieved before 30min, and sufficient construction time is ensured. And the initial setting time and the final setting time interval are short, and the flow loss is less.
Strength properties
The compressive strength was tested according to the requirements of "Cement-based grouting Material" (JC/T986-2018) 6.6, and the obtained data are shown in Table 2.
TABLE 2 grouting Strength Properties
As can be seen from Table 2, the strength of the grouting material reaches more than 30MPa at 1d and exceeds 70MPa at 28d at normal temperature, and the material is high in early strength and good in later strength development, so that the material is very beneficial to underground space leakage treatment. The water-cement ratio is adjusted through a large number of tests, the developed strength of 1d can reach 25-30 MPa, and meanwhile, the later strength is also increased remarkably.
Vertical expansion rate
As a plugging grouting material, it is required to have a micro-expansibility after hardening. The vertical expansion rate test is carried out according to a method of Cement-based grouting materials (JC/T986-2018). The obtained detection result shows that the ld expansion rate reaches 0.025 percent and the 3d expansion rate is 0.042 percent, and the expansion rate is basically in a stable state later. The requirement of micro-expansion of the grouting material for leakage treatment is met.
Grip strength test of reinforcing bar
The bond strength test of the reinforcing steel bars is carried out according to the requirements of 6.8 of Cement-based grouting materials (JC/T986-2018), smooth reinforcing steel bars with the diameter of 20mm are molded under the standard conditions (20 ℃, 85 percent RH), prismatic bodies with the size of 100 x 200mm are cured in water to the age, and the bond strength of 28 days is measured.
Experiments show that the 28d bond stress of the grouting material can reach 43MPa, and exceeds 4.0MPa required by the standard of Cement-based grouting materials (JC/T986-2018).
Steel bar corrosion effect experiment
Preparing grouting material according to the water-cement ratio of 0.14, measuring the corrosion capacity of the grouting material to the steel bar by using a fresh mortar mixing method according to the method required by cement-based grouting material (JC/T986-2018), recording the relation between potential and time under the constant current condition, and drawing a curve chart. The resulting graph is shown in FIG. 1.
The curve of figure 1 can be analyzed to show that the grouting material has no corrosion effect on the steel bars and meets the standard requirements.
Product other Performance testing
The TF polymer leaking stoppage grouting material is subjected to other performance detection, and the obtained detection results are shown in the table 3:
TABLE 3 Polymer plugging grouting Properties
As can be seen from Table 3, the performance index of the F polymeric plugging grouting material reaches or exceeds the building material industry standard of Cement-based grouting Material (JC/T986-2018), and part of the index far exceeds the standard requirement.
Example 6
A construction method for plugging grouting material by utilizing high polymer comprises the following steps:
preparation of slurry:
and adding water into the TF polymer leaking stoppage grouting material, mixing, adding water according to the water consumption recommended by a product qualification certificate provided along with goods, and uniformly stirring for use. The water consumption can be properly reduced according to the actual engineering situation. The mixing water is drinking water, and when other water sources are used, the mixing water meets the regulations of the existing concrete mixing water standard (JGJ 63).
The TF polymer leaking stoppage grouting material can be stirred mechanically or manually. Mechanical stirring is recommended, and the stirring time is generally 3 to 5 minutes. When manual stirring is adopted, 2/3 water is added firstly, stirring is carried out for 2 minutes, and then the rest water is added and stirring is carried out until the mixture is uniform.
(3) The stirring place should be as close as possible to the grouting material construction place, and the distance should not be too long.
(4) The stirring amount of each time is determined according to the using amount so as to ensure that the materials are used up within 40 minutes.
(5) During winter construction, the grouting material and the mixing water meet the relevant regulations of the current concrete engineering construction and acceptance standard (GB 50204).
(6) When the grouting material is used on site, any additive and admixture are strictly prohibited to be mixed in the grouting material.
Construction method
Process for reproducing waterproof layer by cavity plugging method
The purpose is as follows: the curtain on the back of the structure is grouted (injected) to achieve the purpose of stopping water, stopping leakage and reinforcing.
The operation process of TF polymer plugging grouting material by a cavity plugging method comprises the following steps:
pouring (injecting) TF polymer plugging grouting material into a curtain cavity by using a GSL100 grouting pump;
② from the first nozzle/plug;
grouting is started from the grouting pressure as low as possible;
starting to slowly increase the grouting pressure after the slurry begins to flow;
injecting enough slurry to form curtain; blocking the cavity part;
sixthly, grouting is carried out until the grout flows out of the next drilling hole;
seventhly, stopping grouting after the grout reaches the next grouting nozzle/plug;
moving to the next drill hole, installing a grouting nozzle/plug, and repeating the above procedures to continue grouting.
The radius of the drill hole is 1-1.5m, the pitch of the holes is 1.5-2.5m, the drill hole is drilled vertical to the ground, the diameter of the drill hole is phi 32mm, and the depth of the hole passes through the thickness of the concrete structure.
Construction attention:
every 30 minutes the gel time and the gel quality were checked; if the grouting interval time exceeds the gel time, remember to flush the grouting head. The flushing pump runs for two strokes during flushing, so that the grouting head is kept clean, and a grouting nozzle/plug is smooth. Repeating for 2-3 times to form curtain shape. And (4) removing the grouting nozzle/plug, removing the grouting nozzle/plug after all grout begins to react, removing the grouting nozzle/plug according to a standard procedure, sealing the drilling hole by using the plugging agent, and easily removing excessive grout.
The slurry filling (injection) pump is emptied, thoroughly cleaned with water, and the seal of the pump body and the condition of the injection head are periodically checked.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the present description should not be construed as a limitation to the present invention.
Claims (10)
1. The polymer plugging grouting material is characterized in that: comprises the following components in percentage by weight: 35-45% of Portland cement, 30-40% of quick-hardening sulphoaluminate cement, 10-20% of quartz sand, 0.5-2% of resolvent latex powder, 1-5% of infiltration crystallization master batch, 0.5-5% of micro-expanding agent, 0.1-1% of defoaming agent and 0.5-2% of high-efficiency water reducing agent.
2. The polymer plugging grouting material of claim 1, which is characterized in that: comprises the following components in percentage by weight: 38-40% of silicate cement, 35-40% of quick-hardening sulphoaluminate cement, 12-18% of quartz sand, 0.8-1.5% of resolvent latex powder, 1-3% of infiltration crystallization master batch, 1-3% of micro-expanding agent, 0.2-0.5% of defoaming agent and 0.8-1.5% of high-efficiency water reducing agent.
3. The polymer plugging grouting material of claim 1, which is characterized in that: comprises the following components in percentage by weight: 40% of Portland cement, 39% of quick-hardening sulphoaluminate cement, 15% of quartz sand, 1% of resolvent latex powder, 2% of infiltration crystallization master batch, 1.5% of micro-expanding agent, 0.5% of defoaming agent and 1% of high-efficiency water reducing agent.
4. The polymer plugging grouting material of claim 1, which is characterized in that: the resol latex powder is a polymer formed by vinyl acetate and vinyl versatate and/or ethylene and/or acrylic ester.
5. The polymer plugging grouting material of claim 4, which is characterized in that: the polymer is a binary or ternary polymer.
6. The polymer plugging grouting material of claim 1, which is characterized in that: the micro-expanding agent is an ettringite-lime composite expanding agent.
7. The polymer plugging grouting material of claim 1, which is characterized in that: the defoaming agent is a cement mortar defoaming agent obtained by the reaction of polyether and fatty alcohol; the high-efficiency water reducing agent is a melamine water reducing agent.
8. The preparation method of the polymer plugging grouting material according to claim 1 is characterized by comprising the following steps: the method comprises the following steps:
(1) fully mixing the re-decomposed latex powder, the defoaming agent, the high-efficiency water reducing agent, the micro-expanding agent and the infiltration crystallization master batch to obtain a primary mixed material;
(2) then adding fast-hardening sulphoaluminate cement and quartz sand into the primary mixed material and mixing to obtain a secondary mixed material;
(3) and adding portland cement into the second mixed material and mixing to obtain the high-molecular plugging grouting material.
9. The preparation method of the polymer plugging grouting material according to claim 8, characterized in that: the mixing time in the step (1), the step (2) and the step (3) is 10-60 min.
10. The construction method for the polymer plugging grouting material according to claim 1 is characterized by comprising the following steps: the method comprises the following steps:
mixing the high-molecular plugging grouting material with water to obtain a slurry, grouting (injecting) the slurry into the cavity through a grouting (injecting) pump, and starting grouting under a low-pressure condition;
secondly, after grouting, the grouting pressure is slowly increased after the grout begins to flow;
injecting a sufficient amount of slurry to form a curtain; and (5) plugging the cavity part, and drying.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213090A (en) * | 2022-01-04 | 2022-03-22 | 山东京建防水防腐工程有限公司 | Cement-based waterproof leaking stoppage reinforcing agent, preparation method and construction process thereof |
| CN115304944A (en) * | 2022-07-21 | 2022-11-08 | 江苏海能电力设计咨询有限责任公司 | Steel bar coating material with anti-corrosion effect |
| CN115521103A (en) * | 2022-09-29 | 2022-12-27 | 成都工业学院 | Underwater grouting plugging material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4769077A (en) * | 1987-06-30 | 1988-09-06 | Texas Industries, Inc. | Cementitious grout patching formulations and processes |
| CN1356285A (en) * | 2000-12-06 | 2002-07-03 | 高京林 | Fast-hardening expendable grout for emergency construction |
| CN102765916A (en) * | 2012-07-06 | 2012-11-07 | 南京京能恒基技术研发有限公司 | Polymer cement-based self-leveling grouting material |
| CN103951365A (en) * | 2014-04-15 | 2014-07-30 | 华南理工大学 | Portland cement-sulphate aluminum cement-gypsum-polymer composite waterproof mortar and preparation method thereof |
| CN109734393A (en) * | 2019-03-27 | 2019-05-10 | 山西佳维新材料股份有限公司 | A kind of early strength micro expansion strength cement-based grouting material |
-
2021
- 2021-03-19 CN CN202110294585.2A patent/CN112830751A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4769077A (en) * | 1987-06-30 | 1988-09-06 | Texas Industries, Inc. | Cementitious grout patching formulations and processes |
| CN1356285A (en) * | 2000-12-06 | 2002-07-03 | 高京林 | Fast-hardening expendable grout for emergency construction |
| CN102765916A (en) * | 2012-07-06 | 2012-11-07 | 南京京能恒基技术研发有限公司 | Polymer cement-based self-leveling grouting material |
| CN103951365A (en) * | 2014-04-15 | 2014-07-30 | 华南理工大学 | Portland cement-sulphate aluminum cement-gypsum-polymer composite waterproof mortar and preparation method thereof |
| CN109734393A (en) * | 2019-03-27 | 2019-05-10 | 山西佳维新材料股份有限公司 | A kind of early strength micro expansion strength cement-based grouting material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213090A (en) * | 2022-01-04 | 2022-03-22 | 山东京建防水防腐工程有限公司 | Cement-based waterproof leaking stoppage reinforcing agent, preparation method and construction process thereof |
| CN115304944A (en) * | 2022-07-21 | 2022-11-08 | 江苏海能电力设计咨询有限责任公司 | Steel bar coating material with anti-corrosion effect |
| CN115521103A (en) * | 2022-09-29 | 2022-12-27 | 成都工业学院 | Underwater grouting plugging material and preparation method thereof |
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