CN107021703B - Composite high-efficiency superfine powder grouting material - Google Patents
Composite high-efficiency superfine powder grouting material Download PDFInfo
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- CN107021703B CN107021703B CN201710316024.1A CN201710316024A CN107021703B CN 107021703 B CN107021703 B CN 107021703B CN 201710316024 A CN201710316024 A CN 201710316024A CN 107021703 B CN107021703 B CN 107021703B
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- superfine
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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
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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
Abstract
The invention relates to a composite high-efficiency ultrafine powder grouting material which is prepared by fully and uniformly stirring the following raw materials in parts by weight: 2500-2700 parts of superfine cement, 241-443 parts of superfine composite mineral powder, 18-24 parts of polycarboxylic acid water reducer, 13-20 parts of inorganic silicon sub-nano bead powder, 14-24 parts of superfine composite expanding agent, 0.5-3.5 parts of methyl silicate and 0-1 part of high-efficiency coagulation regulator. The invention has the advantages of reasonable formula, low production cost, good working performance, easy processing, environmental protection, energy saving, no pollution and wide application range.
Description
Technical Field
The invention relates to the technical field of crack fracture treatment, in particular to a composite efficient ultrafine powder grouting material.
Background
The cement as grouting material has the advantages of high strength, good durability, no toxicity, no odor, wide and convenient material source, low price and the like, and common cement is mostly adopted for general grouting. However, the common cement has larger grain diameter, more coarse grains and poor stability of slurry when the water ash is larger, is easy to separate water and return to concentration, cannot be effectively poured into fine cracks, and is particularly suitable for grouting of the fine cracks; in addition, the strength development is slow, the impermeability and the corrosion resistance are poor, the durability is poor, the structural stability and the service life are influenced, and the common cement meets the engineering requirements. Therefore, the development of novel high-efficiency high-performance superfine cement grouting material is imperative.
Since the successful development of MC-500 type superfine cement in Japan in the early 80 s, the slurry has good stability, remarkably improved fluidity compared with common cement, good anti-seepage consolidation effect, capability of pouring similar to chemical slurry, high strength compared with chemical slurry, no pollution, no aging and low cost, thus being widely applied in many countries.
In recent years, some domestic enterprises produce a batch of high-quality superfine cement grouting material successively under the technical support of colleges and universities and research institutes, and the superfine cement grouting material is successfully applied to seepage-proofing reinforcement construction of hydropower, subways, tunnels, mines and the like, so that good social and economic benefits are obtained. However, at present, the materials are mainly formed by grinding and processing silicate series superfine cement or modified materials prepared by adding high-efficiency water reducing agent, expanding agent and the like into the superfine cement, so that the defects are directly caused: firstly, if the produced product has defects, the product is not easy to be twisted in time, even the defects can not be corrected at all, and the product can only be scrapped. As is known, the novel high-performance superfine cement-based grouting material is expensive and will cause certain economic loss. Secondly, due to the wear resistance, heat resistance (the temperature in the mill is generally more than 200 ℃), different volatility in a hot and humid environment and the like of all the materials, the fineness of part of the variety materials with good grindability can reach the technical requirement early, the materials difficult to grind are still very thick and far cannot reach the technical requirement, and the quality and performance of the processed product are greatly reduced if the effectiveness is changed due to poor heat resistance.
At present, the grinding industry consistently considers that the grinding industry respectively grinds, processes and stores the materials with higher requirements on material technical index performance, the materials with higher comprehensive cost, the materials with larger differences of easy grinding performance of various materials and the like, and then designs trial-mix small samples and detection performance according to the engineering technical requirements, so that the adjustment is easy, the materials are hardly wasted, zero emission, zero pollution and zero waste are achieved, and the environment-friendly industrial policy advocated by the state is met.
Disclosure of Invention
The invention aims to solve the technical problem of providing a composite efficient ultrafine powder grouting material which has the advantages of reasonable formula, easily obtained raw materials, low cost and good working performance.
In order to solve the problems, the composite efficient ultrafine powder grouting material is characterized in that: the material is prepared by fully and uniformly stirring the following raw materials in parts by weight: 2500-2700 parts of superfine cement, 241-443 parts of superfine composite mineral powder, 18-24 parts of polycarboxylic acid water reducer, 13-20 parts of inorganic silicon sub-nano bead powder, 14-24 parts of superfine composite expanding agent, 0.5-3.5 parts of methyl silicate and 0-1 part of high-efficiency coagulation regulator.
The superfine cement is common Portland cement with alkali content less than or equal to 0.6%, calcium aluminate content less than or equal to 7%, tricalcium silicate content less than or equal to 57% and fineness greater than or equal to 1200 meshes.
The superfine composite mineral powder is prepared from limestone with calcium oxide content of more than or equal to 48%, granulated blast furnace slag with activity of more than or equal to 75%, and steel slag mud with iron content of less than or equal to 20% according to the weight ratio of 1: 2: 1 weight ratio of the powder to be ground into mineral powder with the fineness of more than or equal to 1200 meshes.
The water reducing rate of the polycarboxylate superplasticizer is more than or equal to 35 percent.
The inorganic silicon-grade nano bead powder is superfine powder with fineness not less than 1500 meshes, which is prepared by grinding waste glass slag and scraps by an airflow superfine grinding machine.
The superfine composite expanding agent is sodium hydrosulfite, Ninell and UEA type expanding agents, and the weight ratio of the superfine composite expanding agent to the total weight of the powder is 2: 1: 20 weight percent of fine powder with the fineness of more than or equal to 1200 meshes.
The methyl silicate is sodium methyl silicate, potassium methyl silicate and lithium methyl silicate, and the weight ratio of the methyl silicate to the lithium methyl silicate is 1: 1: 1 by weight ratio.
The high-efficiency coagulation regulator is prepared from sodium gluconate, tricalcium phosphate and sodium heptonate according to the weight ratio of 1: 1: 3 by weight ratio.
Compared with the prior art, the invention has the following advantages:
1. the invention effectively introduces industrial waste, has easily obtained raw materials, reasonable design formula, easy processing, environmental protection, energy saving, no pollution and low cost.
2. The inorganic silicon sub-nanometer bead powder is added, and is glass beads, so that the size is stable, the strength is high, the heat conductivity coefficient is small, the ageing resistance and the weather resistance are good, the air permeability and the air absorption are good, the water rate is small, the fireproof performance is good, and the water-cement ratio is reduced due to the fact that the shape of the glass beads is similar to a sphere, and therefore the flowing permeability of slurry can be effectively improved.
3. The invention is added with the superfine expanding agent to realize the micro-expansion and effective supplementary shrinkage.
4. The addition of the superfine composite mineral powder can effectively increase the compactness, the impermeability and the corrosion resistance and the later strength.
5. The invention adds micro methyl composite silicate, which improves the construction performance and the waterproof and anti-seepage performance.
6. Compared with the similar products in the prior art, the invention has simple preparation process, and can prepare suitable grouting materials at any time and any place according to different engineering technical requirements.
7. The invention can be used for grouting and reinforcing concrete pavement cracks and road foundations, grouting and reinforcing concrete dams and dam foundation cracks, and reinforcing foundations of large or high-rise buildings; water-proof leakage-stopping grouting for pool and basement; underground soil layer filling and curing treatment during underground engineering such as subway, tunnel, mine and the like is performed, so that the excavation difficulty is reduced, the engineering progress is accelerated, and the working efficiency is improved; secondary grouting of foundation bolts and the base of the large-scale equipment; the mechanical properties of the soft soil and the rock are reinforced and improved; the method comprises the following steps of (1) filling and reinforcing sunken foundations of roads, bridges, airport runways and the like; sand fixation of a quicksand layer of a complex stratum, solidification of a sludge texture layer and the like.
Detailed Description
Example 1 composite high-efficiency ultrafine powder grouting material is prepared by fully and uniformly stirring the following raw materials in parts by weight (kg): 2500 parts of superfine cement, 443 parts of superfine composite mineral powder, 18 parts of polycarboxylic acid water reducing agent, 13 parts of inorganic silicon submicron nano bead powder, 24 parts of superfine composite expanding agent and 2 parts of methyl silicate.
Example 2 composite high-efficiency ultrafine powder grouting material, which is prepared by fully and uniformly stirring the following raw materials in parts by weight (kg): 2680 parts of superfine cement, 259 parts of superfine composite mineral powder, 23 parts of polycarboxylic acid water reducing agent, 18 parts of inorganic silica nano bead powder, 18 parts of superfine composite expanding agent, 1.2 parts of methyl silicate and 0.8 part of high-efficiency setting regulator.
Example 3 composite high-efficiency ultrafine powder grouting material, which is prepared by fully and uniformly stirring the following raw materials in parts by weight (kg): 2700 parts of superfine cement, 241 parts of superfine composite mineral powder, 24 parts of polycarboxylic acid water reducing agent, 20 parts of inorganic silicon submicron nano bead powder, 14 parts of superfine composite expanding agent, 0.5 part of methyl silicate and 1 part of high-efficiency coagulation regulator.
Example 4 composite high-efficiency ultrafine powder grouting material, which is prepared by fully and uniformly stirring the following raw materials in parts by weight (kg): 2600 parts of superfine cement, 341 parts of superfine composite mineral powder, 23.5 parts of polycarboxylic acid water reducing agent, 15.5 parts of inorganic silicon subnano bead powder, 19 parts of superfine composite expanding agent, 0.8 part of methyl silicate and 0.2 part of high-efficiency coagulation regulator.
Example 5 composite high-efficiency ultrafine powder grouting material, which is prepared by fully and uniformly stirring the following raw materials in parts by weight (kg): 2500 parts of superfine cement, 296 parts of superfine composite mineral powder, 22 parts of polycarboxylic acid water reducing agent, 16 parts of inorganic silicon submicron nano bead powder, 15 parts of superfine composite expanding agent, 3.5 parts of methyl silicate and 0.5 part of high-efficiency setting regulator.
Example 6 composite high-efficiency ultrafine powder grouting material, which is prepared by fully and uniformly stirring the following raw materials in parts by weight (kg): 2530 parts of superfine cement, 411 parts of superfine composite mineral powder, 20 parts of polycarboxylic acid water reducing agent, 15 parts of inorganic silica nano bead powder, 22 parts of superfine composite expanding agent, 1.6 parts of methyl silicate and 0.4 part of high-efficiency setting regulator.
Example 7 composite high-efficiency ultrafine powder grouting material, which is prepared by fully and uniformly stirring the following raw materials in parts by weight (kg): 2580 parts of superfine cement, 366 parts of superfine composite mineral powder, 19 parts of polycarboxylic acid water reducing agent, 14 parts of inorganic silicon subnano bead powder, 20 parts of superfine composite expanding agent, 0.7 part of methyl silicate and 0.3 part of high-efficiency setting regulator.
In the above examples 1 to 7, the ultra-fine cement is ordinary portland cement having an alkali content of not more than 0.6%, a calcium aluminate content of not more than 7%, a tricalcium silicate content of not more than 57%, and a fineness of not less than 1200 mesh.
The superfine composite mineral powder is prepared from limestone with calcium oxide content of more than or equal to 48%, granulated blast furnace slag with activity of more than or equal to 75%, and steel slag mud with iron content of less than or equal to 20% according to the weight ratio of 1: 2: 1 (kg/kg) and the fineness is more than or equal to 1200 meshes.
The water reducing rate of the polycarboxylic acid water reducing agent is more than or equal to 35 percent.
The inorganic silicon secondary nano bead powder is superfine powder with fineness not less than 1500 meshes prepared by grinding waste glass slag and scraps by an airflow superfine grinding machine.
The superfine composite expanding agent is sodium hydrosulfite, Ninell and UEA type expanding agents, and the weight ratio of the superfine composite expanding agent to the total weight of the powder is 2: 1: 20 (kg/kg) of fine powder with the fineness of more than or equal to 1200 meshes.
The methyl silicate refers to sodium methyl silicate, potassium methyl silicate and lithium methyl silicate, and the weight ratio of the methyl silicate to the lithium methyl silicate is 1: 1: 1 (kg/kg) in a weight ratio of 1.
The high-efficiency setting regulator is sodium gluconate, tricalcium phosphate and sodium heptonate, and the weight ratio of the components is 1: 1: 3 (kg/kg) in a weight ratio of 3.
Claims (4)
1. The composite high-efficiency ultrafine powder grouting material is characterized in that: the material is prepared by fully and uniformly stirring the following raw materials in parts by weight: 2500-2700 parts of superfine cement, 241-443 parts of superfine composite mineral powder, 18-24 parts of polycarboxylic acid water reducer, 13-20 parts of inorganic silicon sub-nano bead powder, 14-24 parts of superfine composite expanding agent, 0.5-3.5 parts of methyl silicate and 0-1 part of high-efficiency coagulation regulator; the superfine cement is ordinary portland cement with alkali content of less than or equal to 0.6%, calcium aluminate content of less than or equal to 7%, tricalcium silicate content of less than or equal to 57% and fineness of more than or equal to 1200 meshes; the superfine composite mineral powder is prepared from limestone with calcium oxide content of more than or equal to 48%, granulated blast furnace slag with activity of more than or equal to 75%, and steel slag mud with iron content of less than or equal to 20% according to the weight ratio of 1: 2: 1, the fineness of the ore powder is more than or equal to 1200 meshes; the superfine composite expanding agent is sodium hydrosulfite, Ninell and UEA type expanding agents, and the weight ratio of the superfine composite expanding agent to the total weight of the powder is 2: 1: 20 weight percent of fine powder with the fineness more than or equal to 1200 meshes; the inorganic silicon-grade nano bead powder is superfine powder with fineness not less than 1500 meshes, which is prepared by grinding waste glass slag and scraps by an airflow superfine grinding machine.
2. The composite high efficiency superfine powder grouting material as claimed in claim 1, wherein: the water reducing rate of the polycarboxylate superplasticizer is more than or equal to 35 percent.
3. The composite high efficiency superfine powder grouting material as claimed in claim 1, wherein: the methyl silicate is sodium methyl silicate, potassium methyl silicate and lithium methyl silicate, and the weight ratio of the methyl silicate to the lithium methyl silicate is 1: 1: 1 by weight ratio.
4. The composite high efficiency superfine powder grouting material as claimed in claim 1, wherein: the high-efficiency coagulation regulator is prepared from sodium gluconate, tricalcium phosphate and sodium heptonate according to the weight ratio of 1: 1: 3 by weight ratio.
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| CN201710316024.1A CN107021703B (en) | 2017-05-08 | 2017-05-08 | Composite high-efficiency superfine powder grouting material |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110304872B (en) * | 2019-08-16 | 2021-09-21 | 陈晓星 | Nano modified cement-based underwater non-dispersible material and preparation method thereof |
| CN114685083B (en) * | 2019-12-24 | 2023-04-18 | 科之杰新材料集团福建有限公司 | Polycarboxylate superplasticizer for sleeve grouting material for prefabricated part, grouting material thereof and use method of polycarboxylate superplasticizer |
| CN111072366B (en) * | 2019-12-30 | 2022-03-04 | 苏州佳固士新材料科技有限公司 | Inorganic grouting material capable of stopping open water and reinforcing structure and preparation method and application thereof |
| CN115286314B (en) * | 2022-07-21 | 2023-04-28 | 北京安科兴业科技股份有限公司 | Water-resistant and self-repairing environment-friendly grouting material matched with MJS construction method and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104529338A (en) * | 2015-01-12 | 2015-04-22 | 杭州绿怡新型建材有限公司 | Ultrahigh-strength cement-based grouting material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104529338A (en) * | 2015-01-12 | 2015-04-22 | 杭州绿怡新型建材有限公司 | Ultrahigh-strength cement-based grouting material |
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