CN108585660B - Formula and preparation method of polypropylene fiber concrete - Google Patents
Formula and preparation method of polypropylene fiber concrete Download PDFInfo
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- CN108585660B CN108585660B CN201810521385.4A CN201810521385A CN108585660B CN 108585660 B CN108585660 B CN 108585660B CN 201810521385 A CN201810521385 A CN 201810521385A CN 108585660 B CN108585660 B CN 108585660B
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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
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Abstract
The invention belongs to the technical field of concrete, and provides a formula of polypropylene fiber concrete and a preparation method thereof, wherein the formula of the polypropylene fiber concrete comprises the following components in parts by weight: 310-340 parts of cement, 50-60 parts of mineral powder, 90-110 parts of fly ash, 800-840 parts of sand, 670-710 parts of broken stone, 200-240 parts of pebble, 50-70 parts of silicon powder, 20-30 parts of polypropylene fiber, 9-11 parts of organic synergist, 57-59 parts of reinforcing agent, 5-7 parts of retarder, 20-25 parts of polymer emulsion, 3-5 parts of flatting agent and 300-310 parts of water, and the technical problems that the existing polypropylene fiber concrete is poor in workability, the initial setting time is advanced and the like are solved.
Description
Technical Field
The invention belongs to the technical field of concrete, and relates to a formula of polypropylene fiber concrete and a preparation method thereof.
Background
The polypropylene fiber concrete has the advantages of preventing or reducing cracks, improving the deformation characteristic and the toughness of the concrete, improving the strength performance and the durability of the concrete and the like, thereby being widely applied to the engineering of military affairs, traffic, airports, building construction, water conservancy and the like, but the addition amount, the compound ingredients and the preparation process of the polyacrylamide are not properly controlled, not only the enhancement effect is not achieved, but also the local strength weakening effect is achieved, and because the relative surface area of the polypropylene fiber is larger, the polypropylene fiber is directly added into the common concrete, the whole workability of the concrete is poor due to the adsorption of a part of free water, in addition, the polypropylene fiber concrete is advanced by 1 to 1.5 hours compared with the common concrete, the final setting is also advanced slightly, however, no regular change is found between the setting time and the doping amount of the fiber, so that the formulation and the preparation process of the polypropylene fiber concrete are necessary to be studied deeply.
Disclosure of Invention
The invention provides a formula of polypropylene fiber concrete and a preparation method thereof, and solves the technical problems.
The technical scheme of the invention is realized as follows:
the formula of the polypropylene fiber concrete comprises the following components in parts by weight:
310-340 parts of cement, 50-60 parts of mineral powder, 90-110 parts of fly ash, 800-840 parts of sand, 670-710 parts of broken stone, 200-240 parts of pebble, 50-70 parts of silicon powder, 20-30 parts of polypropylene fiber, 9-11 parts of organic synergist, 57-59 parts of reinforcing agent, 5-7 parts of retarder, 20-25 parts of polymer emulsion, 3-5 parts of flatting agent and 300-310 parts of water.
Further, the macadam is 5-10 mm continuous graded macadam.
Further, the organic synergist comprises the following components in parts by weight:
5 parts of silane coupling agent, 40 parts of epoxy resin powder, 5 parts of polyether type organic silicon, 2 parts of dispersing agent, 5 parts of diethylene glycol diglycidyl ether, 20 parts of polycarboxylic acid water reducing agent, 13 parts of polyacrylamide, 3 parts of triethanolamine and 7 parts of sodium lignosulfonate.
Further, the retarder consists of the following components in parts by weight:
20 parts of 2-phosphate-1, 2, 4-butane tricarboxylate, 15 parts of sodium gluconate, 20 parts of phosphate, 25 parts of lignocellulose, 5 parts of zinc 4-hydroxybenzenesulfonate, 5 parts of polysuccinimide and 10 parts of acetic acid.
Further, the reinforcing agent consists of the following components in parts by weight:
50 parts of carbon black, 35 parts of boron sludge and 15 parts of glass fiber.
Further, the polymer emulsion comprises the following components in parts by weight:
35 parts of organic silicon emulsion, 13 parts of cationic neoprene latex, 22 parts of ethylene-polyvinyl acetate copolymer emulsion, 15 parts of styrene-butadiene rubber latex and 15 parts of vinyl chloride-vinylidene chloride copolymer emulsion.
Furthermore, the particle sizes of the mineral powder, the fly ash and the silicon powder are all 400-300 meshes.
A preparation method of polypropylene fiber concrete comprises the following steps:
s1, weighing each component according to the formula of claim 1 for later use;
s2, spreading sand, broken stones and pebbles on a conveyor belt, and uniformly dispersing polypropylene fibers on the gravel;
and S3, starting a conveyor belt to add sand, broken stone, pebble and polypropylene fiber into the cement, continuously stirring, sequentially adding the organic synergist and the reinforcing agent after the sand, the broken stone, the pebble and the polypropylene fiber are all added, stirring for 1min, sequentially adding the mineral powder, the fly ash, the silicon powder and the water while stirring, and adding the polymer emulsion, the retarder and the leveling agent after stirring for 1 min.
Compared with the prior art, the invention has the working principle and the beneficial effects that:
the concrete prepared by the invention has good workability, strength and easy leveling property, the initial setting time is not advanced, except that the seventh embodiment is applied to the actual production, the polypropylene fibers are uniformly dispersed in the actual pouring process, no agglomeration phenomenon exists, the concrete workability is good, the construction performance requirement is completely met, after the pouring is finished and the formwork is removed, the concrete rebounds for 28 days, the compressive strength completely meets the design standard requirement, the surface is smooth and clean, the polypropylene fibers are not exposed, the clear water concrete standard requirement is met, the tensile strength, the bending strength, the crack resistance, the wear resistance, the durability and the like of the entity polypropylene fiber concrete completely meet the standard requirement, the comprehensive performance is good, the tensile, the crack resistance, the fatigue resistance, the shock resistance, the violence resistance and the like of the concrete are obviously improved, in addition, the service life is prolonged by 10%, the maintenance period is prolonged by 35%, the total cost is reduced by 50 percent, and the concrete has contingent cases for the production of concrete with special requirements in the future.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: the composition comprises the following components in parts by weight: 310 parts of cement, 50 parts of mineral powder, 90 parts of fly ash, 800 parts of sand, 670 parts of broken stone, 200 parts of pebbles, 50 parts of silica powder, 20 parts of polypropylene fiber, 9 parts of an organic synergist, 57 parts of a reinforcing agent, 5 parts of a retarder, 20 parts of a polymer emulsion, 3 parts of a leveling agent and 300 parts of water, and the preparation method is a mixing method commonly used in the industry.
Example two: the composition comprises the following components in parts by weight: 325 parts of cement, 55 parts of mineral powder, 100 parts of fly ash, 820 parts of sand, 690 parts of crushed stone, 220 parts of pebble, 60 parts of silicon powder, 25 parts of polypropylene fiber, 10 parts of organic synergist, 58 parts of reinforcing agent, 6 parts of retarder, 22 parts of polymer emulsion, 4 parts of leveling agent, 305 parts of water, and 5-10 mm of continuously graded crushed stone, namely the crushed stone is continuously increased from 5mm to 10mm, the amount of the crushed stone in each gradient range is equal, and the particle sizes of the mineral powder, the fly ash and the silicon powder are all 400-300 meshes.
Example three: the composition comprises the following components in parts by weight: 340 parts of cement, 60 parts of mineral powder, 110 parts of fly ash, 840 parts of sand, 710 parts of broken stone, 240 parts of pebbles, 70 parts of silica powder, 30 parts of polypropylene fiber, 11 parts of organic synergist, 59 parts of reinforcing agent, 7 parts of retarder, 25 parts of polymer emulsion, 5 parts of leveling agent and 310 parts of water, and the preparation method is a mixing method commonly used in the industry.
Example four: the composition comprises the following components in parts by weight: 325 parts of cement, 55 parts of mineral powder, 100 parts of fly ash, 820 parts of sand, 690 parts of broken stone, 220 parts of pebbles, 60 parts of silicon powder, 25 parts of polypropylene fiber, 10 parts of organic synergist, 58 parts of reinforcing agent, 6 parts of retarder, 22 parts of polymer emulsion, 4 parts of leveling agent, 305 parts of water, 400-300 meshes of mineral powder, fly ash and silicon powder, and 5-10 mm of broken stone in continuous gradation.
The organic synergist comprises the following components in parts by weight: 5 parts of silane coupling agent, 40 parts of epoxy resin powder, 5 parts of polyether type organic silicon, 2 parts of dispersing agent, 5 parts of diethylene glycol diglycidyl ether, 20 parts of polycarboxylic acid water reducing agent, 13 parts of polyacrylamide, 3 parts of triethanolamine and 7 parts of sodium lignosulfonate.
The retarder consists of the following components in parts by weight: 20 parts of 2-phosphate-1, 2, 4-butane tricarboxylate, 15 parts of sodium gluconate, 20 parts of phosphate, 25 parts of lignocellulose, 5 parts of zinc 4-hydroxybenzenesulfonate, 5 parts of polysuccinimide and 10 parts of acetic acid.
Example five: the composition comprises the following components in parts by weight: 325 parts of cement, 55 parts of mineral powder, 100 parts of fly ash, 820 parts of sand, 690 parts of crushed stone, 220 parts of pebble, 60 parts of silica powder, 25 parts of polypropylene fiber, 10 parts of organic synergist, 58 parts of reinforcing agent, 6 parts of retarder, 22 parts of polymer emulsion, 4 parts of leveling agent, 305 parts of water, 400-300 meshes of mineral powder, fly ash and silica powder, 5-10 mm of crushed stone in continuous gradation,
wherein the reinforcing agent consists of the following components in parts by weight:
50 parts of carbon black, 35 parts of boron sludge and 15 parts of glass fiber.
The polymer emulsion comprises the following components in parts by weight:
35 parts of organic silicon emulsion, 13 parts of cationic neoprene latex, 22 parts of ethylene-polyvinyl acetate copolymer emulsion, 15 parts of styrene-butadiene rubber latex and 15 parts of vinyl chloride-vinylidene chloride copolymer emulsion.
Example six: the composition comprises the following components in parts by weight: 325 parts of cement, 55 parts of mineral powder, 100 parts of fly ash, 820 parts of sand, 690 parts of broken stone, 220 parts of pebbles, 60 parts of silicon powder, 25 parts of polypropylene fiber, 10 parts of organic synergist, 58 parts of reinforcing agent, 6 parts of retarder, 22 parts of polymer emulsion, 4 parts of leveling agent, 305 parts of water, 400-300 meshes of mineral powder, fly ash and silicon powder, and 5-10 mm of broken stone in continuous gradation.
The organic synergist comprises the following components in parts by weight: 5 parts of silane coupling agent, 40 parts of epoxy resin powder, 5 parts of polyether type organic silicon, 2 parts of dispersing agent, 5 parts of diethylene glycol diglycidyl ether, 20 parts of polycarboxylic acid water reducing agent, 13 parts of polyacrylamide, 3 parts of triethanolamine and 7 parts of sodium lignosulfonate.
The retarder consists of the following components in parts by weight: 20 parts of 2-phosphate-1, 2, 4-butane tricarboxylate, 15 parts of sodium gluconate, 20 parts of phosphate, 25 parts of lignocellulose, 5 parts of zinc 4-hydroxybenzenesulfonate, 5 parts of polysuccinimide and 10 parts of acetic acid,
the reinforcing agent comprises the following components in parts by weight:
50 parts of carbon black, 35 parts of boron sludge and 15 parts of glass fiber.
The polymer emulsion comprises the following components in parts by weight:
35 parts of organic silicon emulsion, 13 parts of cationic neoprene latex, 22 parts of ethylene-polyvinyl acetate copolymer emulsion, 15 parts of styrene-butadiene rubber latex and 15 parts of vinyl chloride-vinylidene chloride copolymer emulsion.
Example seven: the formula is the same as that of the sixth embodiment, and the preparation method comprises the following steps:
s1, weighing each component according to the formula of the sixth embodiment for later use;
s2, spreading sand, broken stones and pebbles on a conveyor belt, and uniformly dispersing polypropylene fibers on the gravel;
s3, starting a conveyor belt to add sand, broken stone, pebble and polypropylene fiber into cement, continuously stirring, adding an organic synergist and a reinforcing agent in sequence after the sand, broken stone, pebble and polypropylene fiber are all added, stirring for 1min, then adding mineral powder, fly ash, silicon powder and water in sequence while stirring, adding a polymer emulsion, a retarder and a leveling agent in sequence after stirring for 1min, and reducing the stirring amount in the stirring process from 4 sides of stirring in each time to 2-2.5 sides of stirring in each time.
Examples one-seven the workability, strength, surface smoothness, setting time test results for the concretes prepared in examples 1-4 are shown in tables 1-4:
TABLE 1 results of the workability test of the various examples
As can be seen from Table 1, the workability of each example is better than that of the ordinary polypropylene fiber concrete commonly used on the market, and the workability is the best in comparison with the seventh and fifth examples because
The reinforcing agent and the polymer emulsion in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment are common and currently universal formulas, and the reinforcing agent and the polymer emulsion in the seventh embodiment, the sixth embodiment and the fifth embodiment are prepared by compounding special components and proportions of the reinforcing agent and the polymer emulsion, so that the reinforcing agent and the polymer emulsion have a good reinforcing effect on the workability of concrete.
Table 2 concrete strength test results of each example
As can be seen from Table 2, the strength of each example is slightly better than that of common polypropylene fiber concrete on the market, and the sum of the strength of the seventh example, the sixth example and the fifth example is the best, which shows that the addition of the special reinforcing agent and the polymer emulsion in the seventh example, the sixth example and the fifth example enhances the strength of the concrete, and the organic synergist, the retarder, the reinforcing agent and the polymer emulsion can play a synergistic role, and the combination effect is larger than that of the respective reinforcing agent and the polymer emulsion.
Table 3 test results of smoothness after plastering concrete of each example
As can be seen from Table 3, for the same degree of technicians, the polypropylene fiber concrete has high rendering difficulty and the surface is not easy to be smooth, but the fiber is not exposed in the embodiments of the invention, and the fiber is not exposed in the embodiments of the invention
The surface smoothness and smoothness of the fifth, sixth and seventh examples are better, and especially the smoothness of the seventh example is optimal, so that the surface leveling performance of the polypropylene fiber concrete is better through the change of the formula and the process.
TABLE 4 test results of setting time in summer for concrete of each example
As can be seen from Table 4, the initial setting of the polypropylene fiber concrete is advanced by 1-1.5h compared with the ordinary concrete, and the final setting is slightly advanced, but the invention achieves the consistent initial setting time of the ordinary concrete through the adjustment of the formula and the process.
After tests, the seventh embodiment is applied to actual production, and the polypropylene fibers are found to be uniformly dispersed, have no agglomeration phenomenon and good concrete workability in the actual pouring process, completely meet the construction performance requirements, after the pouring is finished and the formwork is removed, the concrete has the advantages of resilience in 28 days, smooth surface and no exposure of polypropylene fiber, and can completely meet the design standard requirement, the tensile strength, bending strength, crack resistance, wear resistance, durability and the like of the solid polypropylene fiber concrete can completely meet the standard requirement, the comprehensive performance is excellent, and obviously improves the tensile, rupture, crack, fatigue, earthquake and storm resistance of the concrete, in addition, the service life is prolonged by 10%, the maintenance period is prolonged by 35%, the total cost is reduced by 50%, and a case is provided for the future production of various concrete with special requirements.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. The formula of the polypropylene fiber concrete is characterized by comprising the following components in parts by weight:
310-340 parts of cement, 50-60 parts of mineral powder, 90-110 parts of fly ash, 800-840 parts of sand, 670-710 parts of broken stone, 200-240 parts of pebble, 50-70 parts of silicon powder, 20-30 parts of polypropylene fiber, 9-11 parts of organic synergist, 57-59 parts of reinforcing agent, 5-7 parts of retarder, 20-25 parts of polymer emulsion, 3-5 parts of flatting agent and 300-310 parts of water,
the retarder consists of the following components in parts by weight:
20 parts of 2-phosphate-1, 2, 4-butane tricarboxylate, 15 parts of sodium gluconate, 20 parts of phosphate, 25 parts of lignocellulose, 5 parts of zinc 4-hydroxybenzenesulfonate, 5 parts of polysuccinimide and 10 parts of acetic acid;
the reinforcing agent comprises the following components in parts by weight:
50 parts of carbon black, 35 parts of boron sludge, 15 parts of glass fiber,
the polymer emulsion comprises the following components in parts by weight:
35 parts of organic silicon emulsion, 13 parts of cationic neoprene latex, 22 parts of ethylene-polyvinyl acetate copolymer emulsion, 15 parts of styrene-butadiene rubber latex, 15 parts of vinyl chloride-vinylidene chloride copolymer emulsion,
the organic synergist comprises the following components in parts by weight:
5 parts of silane coupling agent, 40 parts of epoxy resin powder, 5 parts of polyether type organic silicon, 2 parts of dispersing agent, 5 parts of diethylene glycol diglycidyl ether, 20 parts of polycarboxylic acid water reducing agent, 13 parts of polyacrylamide, 3 parts of triethanolamine and 7 parts of sodium lignosulfonate.
2. The formulation of polypropylene fiber concrete according to claim 1, wherein the crushed stone is 5-10 mm continuous graded crushed stone.
3. The formula of polypropylene fiber concrete according to claim 1, wherein the particle sizes of the mineral powder, the fly ash and the silica powder are all 400-300 meshes.
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| CN110194618B (en) * | 2019-06-17 | 2021-09-14 | 佛冈锦华混凝土有限公司 | Construction waste recycled concrete and preparation method thereof |
| CN113845318B (en) * | 2021-09-10 | 2022-06-28 | 桐乡市羔羊水泥有限公司 | High-fracture-resistance composite portland cement, concrete part prepared from cement and preparation process of concrete part |
| CN116332601A (en) * | 2023-03-25 | 2023-06-27 | 苏州南方混凝土有限公司 | Composite high-strength concrete and preparation process thereof |
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| CN1093520C (en) * | 1995-12-29 | 2002-10-30 | 王家君 | Conducting concrete usable as electric heat-generating material |
| CN101508593A (en) * | 2009-02-25 | 2009-08-19 | 中国建筑材料科学研究总院 | Ultra-light heat insulation foam concrete and uses thereof |
| CN104986996B (en) * | 2015-06-25 | 2017-12-26 | 中铁第四勘察设计院集团有限公司 | A kind of composite fibre macromolecule enhancing concrete acoustical barrier and preparation method thereof |
| CN105152587A (en) * | 2015-09-29 | 2015-12-16 | 浙江瑞高绿建科技有限公司 | Building stone and preparation method thereof |
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Address after: 050000 douyu Industrial Zone, Luancheng District, Shijiazhuang City, Hebei Province Patentee after: Shijiazhuang Jinyu Concrete Co., Ltd Address before: 050000 douyu Industrial Zone, Luancheng District, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG JINYU XUCHENG CONCRETE Co.,Ltd. |
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