CN113429167B - High-strength pervious concrete suitable for sponge city construction and preparation method thereof - Google Patents
High-strength pervious concrete suitable for sponge city construction and preparation method thereof Download PDFInfo
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- CN113429167B CN113429167B CN202110788009.3A CN202110788009A CN113429167B CN 113429167 B CN113429167 B CN 113429167B CN 202110788009 A CN202110788009 A CN 202110788009A CN 113429167 B CN113429167 B CN 113429167B
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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
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses high-strength pervious concrete suitable for sponge city construction and a preparation method thereof, and particularly relates to the technical field of concrete materials, which comprises the following steps: cement, composite fiber, composite reinforcing agent, water reducing agent, quick-setting early strength agent and aggregate. The composite fiber and the composite reinforcing agent in the formula are used in a matching way, so that the strength and the water permeability of the concrete can be effectively enhanced; glass fiber, basalt fiber and polypropylene fiber cooperate and use, can further strengthen the inside structural strength of concrete, and composite fiber forms the fibre network in that the concrete is inside simultaneously, can effectively strengthen the high water permeability of concrete, and nanometer silica, nanometer zirconium diboride powder and the cooperation of nanometer silicon nitride in the compound reinforcing agent are used and are carried out modified treatment to composite fiber, can effectively strengthen composite fiber's structural strength and self performance, and then improve the structural strength and the water permeability of concrete.
Description
Technical Field
The invention relates to the technical field of concrete materials, in particular to high-strength pervious concrete suitable for sponge city construction and a preparation method thereof.
Background
The sponge city is a new generation city rainfall flood management concept, means that the city can be like a sponge, has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters caused by rainwater and the like, and can be called as a water elasticity city. Sponge city construction should follow ecological priority principle etc. combines together natural way and artificial measures, under the prerequisite of guaranteeing urban drainage waterlogging prevention safety, furthest realizes that rainwater stores up, permeates and purifies in the urban area, promotes the utilization of rainwater resource and ecological environment protection. In the sponge city construction process, the systematicness of natural rainfall, surface water and underground water is planned, water recycling links such as water supply and drainage are coordinated, and the complexity and the long-term property of the links are considered. The pervious concrete meets the strength requirement and simultaneously needs to keep a certain through hole to meet the requirement of water permeability, so that the aim of ensuring the strength and the porosity is fulfilled by selecting proper raw materials, and also by a mixing proportion design, a preparation process and additives during preparation.
The existing concrete has low structural strength, low water permeability, easy water accumulation, easy damage and short service life.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides high-strength pervious concrete suitable for sponge city construction and a preparation method thereof.
In order to achieve the purpose, the invention provides the following technical scheme: the high-strength pervious concrete suitable for sponge city construction comprises the following components in percentage by weight: 12.24-12.86% of cement, 4.56-5.14% of composite fiber, 3.26-3.84% of composite reinforcing agent, 5.45-5.95% of water, 0.224-0.246% of water reducing agent, 0.214-0.236% of quick-setting early strength agent and the balance aggregate.
Further, the composite fiber comprises the following components in percentage by weight: 25.40-26.60% of glass fiber, 28.30-28.90% of basalt fiber and the balance of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 35.40-36.60% of nano silicon dioxide, 27.50-28.10% of nano zirconium diboride powder and the balance of nano silicon nitride.
Further, the composite material comprises the following components in percentage by weight: 12.24% of cement, 4.56% of composite fiber, 3.26% of composite reinforcing agent, 5.45% of water, 0.224% of water reducing agent, 0.214% of quick-setting early strength agent and 74.052% of aggregate; the composite fiber comprises the following components in percentage by weight: 25.40% of glass fiber, 28.30% of basalt fiber and 46.30% of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 35.40 percent of nano silicon dioxide, 27.50 percent of nano zirconium diboride powder and 37.10 percent of nano silicon nitride.
Further, the paint comprises the following components in percentage by weight: 12.86% of cement, 5.14% of composite fiber, 3.84% of composite reinforcing agent, 5.95% of water, 0.246% of water reducing agent, 0.236% of quick-setting early strength agent and 71.728% of aggregate; the composite fiber comprises the following components in percentage by weight: 26.60 percent of glass fiber, 28.90 percent of basalt fiber and 44.50 percent of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 36.60 percent of nano silicon dioxide, 28.10 percent of nano zirconium diboride powder and 35.30 percent of nano silicon nitride.
Further, the paint comprises the following components in percentage by weight: 12.55% of cement, 4.85% of composite fiber, 3.55% of composite reinforcing agent, 5.70% of water, 0.235% of water reducing agent, 0.225% of quick-setting early strength agent and 72.89% of aggregate; the composite fiber comprises the following components in percentage by weight: 26.00 percent of glass fiber, 28.60 percent of basalt fiber and 45.40 percent of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 36.00 percent of nano silicon dioxide, 27.80 percent of nano zirconium diboride powder and 36.20 percent of nano silicon nitride.
Further, the water reducing agent is a polycarboxylic acid water reducing agent; the quick-setting early strength agent consists of triethanolamine, sodium silicate and lithium carbonate, and the mass ratio of the triethanolamine to the sodium silicate to the lithium carbonate is 3:4: 3.
The invention also provides a preparation method of the high-strength pervious concrete suitable for sponge city construction, which comprises the following specific preparation steps:
the method comprises the following steps: weighing cement, composite fiber, composite reinforcing agent, water reducing agent, quick-setting early strength agent and aggregate according to the weight percentage;
step two: heating, mixing, stirring and ultrasonically vibrating half of the composite fiber, the composite reinforcing agent and water in the first step to obtain a modified composite material;
step three: pretreating and stirring the aggregate and the residual water in the step one for 2-3 min, then adding the residual composite fiber and the composite reinforcing agent in the step one, and continuously stirring for 2-3 min to obtain a pretreated mixture A;
step four: adding the cement, the water reducing agent and the quick-setting early strength agent in the first step into the pretreated mixture prepared in the third step, and continuously stirring for 4-5 min to obtain a pretreated mixture B;
step five: adding the modified composite material prepared in the step two into the pretreated mixture B prepared in the step four, and continuously stirring for 7-8 min to obtain concrete slurry;
step six: pouring the concrete slurry prepared in the fifth step into a mould, and then carrying out flat pressing vibration forming treatment;
step seven: and (4) continuing curing with the mold after molding, removing the mold after 2 days, and curing to the corresponding age under standard conditions to obtain the high-strength pervious concrete.
Further, in the second step, firstly, the glass fiber in the composite fiber, the nano silicon dioxide in the composite reinforcing agent and one sixth of water by weight are heated, mixed, stirred and ultrasonically vibrated to obtain modified glass fiber; then carrying out heating, mixing, stirring and ultrasonic oscillation treatment on the basalt fiber in the composite fiber, the nano zirconium diboride powder in the composite reinforcing agent and one sixth of water by weight to obtain modified basalt fiber; and finally, carrying out heating, mixing, stirring and ultrasonic vibration treatment on the polypropylene fiber in the composite fiber, the nano silicon nitride in the composite reinforcing agent and one sixth of water by weight to obtain the modified polypropylene fiber.
Further, in the fifth step, the modified glass fiber, the modified basalt fiber and the modified polypropylene fiber are sequentially added into the pretreated mixture B prepared in the fourth step.
Further, in the sixth step, pressure forming is carried out by adopting the pressure of 0.5-0.9 MPa.
The invention has the technical effects and advantages that:
1. the high-strength pervious concrete prepared by the raw material formula is suitable for sponge city construction, and the composite fibers and the composite reinforcing agent in the formula are matched for use, so that the strength and the water permeability of the concrete can be effectively enhanced; the glass fiber in the composite fiber has good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, can effectively support the concrete, and improves the compressive strength and the safety of the concrete; the basalt fibers in the composite fibers and the basalt continuous fibers have high strength, and also have various excellent performances of electrical insulation, corrosion resistance, high temperature resistance and the like, so that the structural strength and the safety performance of concrete can be effectively enhanced; the polypropylene fiber in the composite fiber has the advantages of high strength, good toughness, good chemical resistance and antimicrobial property, low price and the like, and can be used as a filling material of concrete, plaster and the like to improve the impact resistance, water resistance and heat insulation of the concrete; meanwhile, the glass fiber, the basalt fiber and the polypropylene fiber are used in a matching manner, so that the structural strength in the concrete can be further enhanced, and meanwhile, the composite fiber forms a fiber network in the concrete, so that the high water permeability of the concrete can be effectively enhanced;
2. in the process of preparing the high-strength pervious concrete suitable for sponge city construction, the nano silicon dioxide in the composite reinforcing agent has the optical performance of resisting ultraviolet rays, and can improve the ageing resistance, the strength and the chemical resistance of the composite fiber and the concrete; the nanometer zirconium diboride powder in the composite reinforcing agent has high purity, small grain size, uniform distribution, large specific surface area, high surface activity, high temperature resistance, oxidation resistance and high hardness, and can effectively reinforce the structural strength and stability of concrete; the nano silicon nitride in the composite reinforcing agent has small particle size, uniform distribution, large specific surface area, high surface activity, high mechanical strength and good chemical corrosion resistance, can effectively reinforce the structural strength of concrete and effectively prolong the service life of the concrete, and in addition, the nano silicon dioxide, the nano zirconium diboride powder and the nano silicon nitride are matched to modify the composite fibers, so that the structural strength and the self performance of the composite fibers can be effectively enhanced, and the structural strength and the water permeability of the concrete are further improved.
Detailed Description
The following will clearly and completely describe the technical solutions in 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 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.
Example 1:
the invention provides high-strength pervious concrete suitable for sponge city construction, which comprises the following components in percentage by weight: 12.24% of cement, 4.56% of composite fiber, 3.26% of composite reinforcing agent, 5.45% of water, 0.224% of water reducing agent, 0.214% of quick-setting early strength agent and 74.052% of aggregate; the composite fiber comprises the following components in percentage by weight: 25.40% of glass fiber, 28.30% of basalt fiber and 46.30% of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 35.40 percent of nano silicon dioxide, 27.50 percent of nano zirconium diboride powder and 37.10 percent of nano silicon nitride;
the water reducing agent is a polycarboxylic acid water reducing agent; the quick-setting early strength agent consists of triethanolamine, sodium silicate and lithium carbonate, wherein the mass ratio of the triethanolamine to the sodium silicate to the lithium carbonate is 3:4: 3;
the invention also provides a preparation method of the high-strength pervious concrete suitable for sponge city construction, which comprises the following specific preparation steps:
the method comprises the following steps: weighing cement, composite fiber, composite reinforcing agent, water reducing agent, quick-setting early strength agent and aggregate according to the weight percentage;
step two: heating, mixing, stirring and ultrasonically vibrating half of the composite fiber, the composite reinforcing agent and water in the first step to obtain a modified composite material;
step three: pretreating and stirring the aggregate and the residual water in the step one for 3min, then adding the residual composite fiber and the composite reinforcing agent in the step one, and continuously stirring for 3min to obtain a pretreated mixture A;
step four: adding the cement, the water reducing agent and the quick-setting early strength agent in the step one into the pretreated mixture prepared in the step three, and continuously stirring for 5min to obtain a pretreated mixture B;
step five: adding the modified composite material prepared in the step two into the pretreated mixture B prepared in the step four, and continuously stirring for 8min to obtain concrete slurry;
step six: pouring the concrete slurry prepared in the fifth step into a mould, and then carrying out flat pressing vibration forming treatment;
step seven: and (4) continuing curing with the mold after molding, removing the mold after 2 days, and curing to the corresponding age under standard conditions to obtain the high-strength pervious concrete.
In the second step, firstly, the glass fiber in the composite fiber, the nano silicon dioxide in the composite reinforcing agent and one sixth of water by weight are heated, mixed, stirred and ultrasonically vibrated to obtain modified glass fiber; then carrying out heating, mixing, stirring and ultrasonic oscillation treatment on the basalt fiber in the composite fiber, the nano zirconium diboride powder in the composite reinforcing agent and one sixth of water by weight to obtain modified basalt fiber; finally, heating, mixing, stirring and ultrasonically vibrating the polypropylene fiber in the composite fiber, the nano silicon nitride in the composite reinforcing agent and one sixth of water by weight to obtain modified polypropylene fiber; and step five, adding the modified glass fiber, the modified basalt fiber and the modified polypropylene fiber into the pretreated mixture B prepared in the step four in sequence.
And in the sixth step, pressure forming is carried out by adopting the pressure of 0.7 MPa.
Example 2:
different from the embodiment 1, the material comprises the following components in percentage by weight: 12.86% of cement, 5.14% of composite fiber, 3.84% of composite reinforcing agent, 5.95% of water, 0.246% of water reducing agent, 0.236% of quick-setting early strength agent and 71.728% of aggregate; the composite fiber comprises the following components in percentage by weight: 26.60% of glass fiber, 28.90% of basalt fiber and 44.50% of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 36.60 percent of nano silicon dioxide, 28.10 percent of nano zirconium diboride powder and 35.30 percent of nano silicon nitride.
Example 3:
different from the examples 1-2, the material comprises the following components in percentage by weight: 12.55% of cement, 4.85% of composite fiber, 3.55% of composite reinforcing agent, 5.70% of water, 0.235% of water reducing agent, 0.225% of quick-setting early strength agent and 72.89% of aggregate; the composite fiber comprises the following components in percentage by weight: 26.00 percent of glass fiber, 28.60 percent of basalt fiber and 45.40 percent of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 36.00 percent of nano silicon dioxide, 27.80 percent of nano zirconium diboride powder and 36.20 percent of nano silicon nitride.
Taking the high-strength pervious concrete prepared in the above examples 1-3, the high-strength pervious concrete of the first control group, the high-strength pervious concrete of the second control group, the high-strength pervious concrete of the third control group, the high-strength pervious concrete of the fourth control group, the high-strength pervious concrete of the fifth control group and the high-strength pervious concrete of the sixth control group respectively, the high-strength pervious concrete of the first control group has no glass fiber compared with the examples, the high-strength pervious concrete of the second control group has no basalt fiber compared with the examples, the high-strength pervious concrete of the third control group has no polypropylene fiber compared with the examples, the high-strength pervious concrete of the fourth control group has no nano silicon dioxide compared with the examples, the high-strength pervious concrete of the fifth control group has no nano zirconium diboride powder compared with the examples, and the high-strength pervious concrete of the sixth control group has no nano silicon nitride compared with the examples, the high-strength pervious concrete prepared in the three examples and the high-strength pervious concrete suitable for sponge city construction of the six control groups were tested in nine groups, each 30 samples were taken as one group, and the test results are shown in the table:
as can be seen from the table, the raw material ratio of the high-strength pervious concrete suitable for sponge city construction is as follows: comprises the following components in percentage by weight: 12.55% of cement, 4.85% of composite fiber, 3.55% of composite reinforcing agent, 5.70% of water, 0.235% of water reducing agent, 0.225% of quick-setting early strength agent and 72.89% of aggregate; the composite fiber comprises the following components in percentage by weight: 26.00 percent of glass fiber, 28.60 percent of basalt fiber and 45.40 percent of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 36.00 percent of nano silicon dioxide, 27.80 percent of nano zirconium diboride powder and 36.20 percent of nano silicon nitride, the compressive strength and the water permeability of the high-strength permeable concrete suitable for sponge city construction can be effectively improved, the high strength and the high water permeability of a concrete pavement are ensured, and the service life is longer; therefore, the embodiment 3 is a better implementation mode of the invention, and the composite fiber and the composite reinforcing agent in the formula are used together, so that the strength and the water permeability of the concrete can be effectively enhanced; the glass fiber in the composite fiber has good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, can effectively support the concrete and improve the compressive strength and the safety of the concrete; the basalt fibers in the composite fibers and the basalt continuous fibers have high strength, and also have various excellent performances of electrical insulation, corrosion resistance, high temperature resistance and the like, so that the structural strength and the safety performance of concrete can be effectively enhanced; the polypropylene fiber in the composite fiber has the advantages of high strength, good toughness, good chemical resistance and antimicrobial property, low price and the like, and can be used as a filling material of concrete, plaster and the like to improve the impact resistance, water resistance and heat insulation of the concrete; meanwhile, the glass fiber, the basalt fiber and the polypropylene fiber are used in a matched mode, so that the structural strength in the concrete can be further enhanced, and meanwhile, the composite fiber forms a fiber network in the concrete, so that the high water permeability of the concrete can be effectively enhanced; the nano silicon dioxide in the composite reinforcing agent has the optical performance of resisting ultraviolet rays, and can improve the ageing resistance, the strength and the chemical resistance of the composite fiber and the concrete; the nanometer zirconium diboride powder in the composite reinforcing agent has high purity, small grain size, uniform distribution, large specific surface area, high surface activity, high temperature resistance, oxidation resistance and high hardness, and can effectively reinforce the structural strength and stability of concrete; the nano silicon nitride in the composite reinforcing agent has small particle size, uniform distribution, large specific surface area, high surface activity, high mechanical strength and good chemical corrosion resistance, can effectively enhance the structural strength of concrete and can effectively prolong the service life of the concrete; in addition, the nano silicon dioxide, the nano zirconium diboride powder and the nano silicon nitride are matched for use to modify the composite fiber, so that the structural strength and the self performance of the composite fiber can be effectively enhanced, and the structural strength and the water permeability of the concrete are further improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a high strength concrete that permeates water suitable for sponge city construction which characterized in that: comprises the following components in percentage by weight: 12.24-12.86% of cement, 4.56-5.14% of composite fiber, 3.26-3.84% of composite reinforcing agent, 5.45-5.95% of water, 0.224-0.246% of water reducing agent, 0.214-0.236% of quick-setting early strength agent and the balance aggregate; the composite fiber comprises the following components in percentage by weight: 25.40-26.60% of glass fiber, 28.30-28.90% of basalt fiber and the balance of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 35.40-36.60% of nano silicon dioxide, 27.50-28.10% of nano zirconium diboride powder and the balance of nano silicon nitride.
2. The high-strength pervious concrete suitable for sponge city construction according to claim 1, characterized in that: comprises the following components in percentage by weight: 12.24% of cement, 4.56% of composite fiber, 3.26% of composite reinforcing agent, 5.45% of water, 0.224% of water reducing agent, 0.214% of quick-setting early strength agent and 74.052% of aggregate; the composite fiber comprises the following components in percentage by weight: 25.40% of glass fiber, 28.30% of basalt fiber and 46.30% of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 35.40 percent of nano silicon dioxide, 27.50 percent of nano zirconium diboride powder and 37.10 percent of nano silicon nitride.
3. The high-strength pervious concrete suitable for sponge city construction according to claim 1, characterized in that: comprises the following components in percentage by weight: 12.86% of cement, 5.14% of composite fiber, 3.84% of composite reinforcing agent, 5.95% of water, 0.246% of water reducing agent, 0.236% of quick-setting early strength agent and 71.728% of aggregate; the composite fiber comprises the following components in percentage by weight: 26.60 percent of glass fiber, 28.90 percent of basalt fiber and 44.50 percent of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 36.60 percent of nano silicon dioxide, 28.10 percent of nano zirconium diboride powder and 35.30 percent of nano silicon nitride.
4. The high-strength pervious concrete suitable for sponge city construction according to claim 1, characterized in that: comprises the following components in percentage by weight: 12.55% of cement, 4.85% of composite fiber, 3.55% of composite reinforcing agent, 5.70% of water, 0.235% of water reducing agent, 0.225% of quick-setting early strength agent and 72.89% of aggregate; the composite fiber comprises the following components in percentage by weight: 26.00% of glass fiber, 28.60% of basalt fiber and 45.40% of polypropylene fiber; the composite reinforcing agent comprises the following components in percentage by weight: 36.00 percent of nano silicon dioxide, 27.80 percent of nano zirconium diboride powder and 36.20 percent of nano silicon nitride.
5. The high-strength pervious concrete suitable for sponge city construction according to claim 1, characterized in that: the water reducing agent is a polycarboxylic acid water reducing agent; the quick-setting early strength agent consists of triethanolamine, sodium silicate and lithium carbonate, and the mass ratio of the triethanolamine to the sodium silicate to the lithium carbonate is 3:4: 3.
6. The method for preparing high-strength pervious concrete suitable for sponge city construction according to any one of claims 2 to 5, characterized in that: the preparation method comprises the following specific steps:
the method comprises the following steps: weighing cement, composite fiber, composite reinforcing agent, water reducing agent, quick-setting early strength agent and aggregate according to the weight percentage;
step two: heating, mixing, stirring and ultrasonically vibrating half weight of the composite fiber, the composite reinforcing agent and water in the first step to obtain a modified composite material;
step three: pretreating and stirring the aggregate and the residual water in the step one for 2-3 min, then adding the residual composite fiber and the composite reinforcing agent in the step one, and continuously stirring for 2-3 min to obtain a pretreated mixture A;
step four: adding the cement, the water reducing agent and the quick-setting early strength agent in the first step into the pretreated mixture A prepared in the third step, and continuously stirring for 4-5 min to obtain a pretreated mixture B;
step five: adding the modified composite material prepared in the step two into the pretreated mixture B prepared in the step four, and continuously stirring for 7-8 min to obtain concrete slurry;
step six: pouring the concrete slurry prepared in the fifth step into a mould, and then carrying out flat pressing vibration forming treatment;
step seven: and (4) continuing curing with the mold after molding, removing the mold after 2 days, and curing to the corresponding age under standard conditions to obtain the high-strength pervious concrete.
7. The preparation method of the high-strength pervious concrete suitable for sponge city construction according to claim 6, characterized in that: in the second step, firstly, heating, mixing, stirring and ultrasonic vibrating the glass fiber in the composite fiber, the nano-silica in the composite reinforcing agent and one sixth of water to obtain modified glass fiber; then carrying out heating, mixing, stirring and ultrasonic oscillation treatment on basalt fibers in the composite fibers, nano zirconium diboride powder in the composite reinforcing agent and water with one sixth weight to obtain modified basalt fibers; and finally, carrying out heating, mixing, stirring and ultrasonic oscillation treatment on the polypropylene fiber in the composite fiber, the nano silicon nitride in the composite reinforcing agent and one sixth of water by weight to obtain the modified polypropylene fiber.
8. The preparation method of the high-strength pervious concrete suitable for sponge city construction according to claim 7, characterized in that: and step five, adding the modified glass fiber, the modified basalt fiber and the modified polypropylene fiber into the pretreated mixture B prepared in the step four in sequence.
9. The preparation method of the high-strength pervious concrete suitable for sponge city construction according to claim 6, characterized in that: and in the sixth step, pressure forming is carried out by adopting the pressure of 0.5-0.9 MPa.
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Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349035A (en) * | 2008-09-09 | 2009-01-21 | 天津市欧陆建材有限公司 | High-strength fiber pervious concrete road pavement brick and preparation method thereof |
| CN105198304B (en) * | 2015-08-12 | 2018-01-09 | 大连理工大学 | Multiple carbon dope fiber and the composite mortar and its preparation technology of nano silicon and application |
| CN107098637B (en) * | 2017-04-07 | 2018-10-12 | 山东大学 | A kind of ecological permeable concrete material and preparation method thereof |
| CN106977126B (en) * | 2017-04-10 | 2020-05-05 | 哈尔滨工业大学 | Preparation method of modified fiber with high interface bonding strength with cement-based material |
| CN107098632A (en) * | 2017-06-06 | 2017-08-29 | 湖南三恒建设园林工程有限公司 | High-performance environment-friendly ecotype pervious concrete |
| CN108147725B (en) * | 2017-12-29 | 2020-12-11 | 成都精准混凝土有限公司 | High-strength pervious concrete |
| CN108191341A (en) * | 2018-02-09 | 2018-06-22 | 珠海市昂科装饰工程有限公司岳阳分公司 | A kind of pervious concrete and preparation method thereof |
| CN108409250A (en) * | 2018-04-25 | 2018-08-17 | 广西理工职业技术学院 | The method for preparing green pervious concrete using tailing |
| CN109534744A (en) * | 2018-10-23 | 2019-03-29 | 华北水利水电大学 | The preparation method of regeneration aggregate pervious concrete |
| CN109369104B (en) * | 2018-11-22 | 2021-05-18 | 中南大学 | Preparation method of high-strength and high-permeability concrete |
| CN109553343A (en) * | 2018-11-27 | 2019-04-02 | 长江大学 | A kind of refractory concrete material and preparation method thereof |
| CN109704662B (en) * | 2019-03-08 | 2020-11-03 | 河南理工大学 | Nano silicon nitride reinforced cement-based material and preparation method thereof |
| CN110482936B (en) * | 2019-09-21 | 2021-08-31 | 浙江越达交通工程有限公司 | Pervious concrete prepared from recycled aggregate and preparation process thereof |
| CN111848041A (en) * | 2020-07-23 | 2020-10-30 | 广州市广丰混凝土有限公司 | High-strength concrete |
| CN111825383A (en) * | 2020-07-27 | 2020-10-27 | 哈尔滨工业大学 | Nano-modified carbon fiber reinforced and toughened high-performance cement-based composite material and preparation method thereof |
| CN112028557B (en) * | 2020-09-15 | 2022-05-10 | 仁寿县陵州预拌商品混凝土有限公司 | Anti-crack concrete and preparation method thereof |
| CN112321264B (en) * | 2020-10-21 | 2022-07-15 | 江苏新路德建设有限公司 | Pervious concrete and preparation method and application thereof |
| CN112279617B (en) * | 2020-10-31 | 2022-01-04 | 永清县汇都混凝土有限公司 | High-strength high-water-permeability concrete and preparation method thereof |
| CN112408880A (en) * | 2020-11-18 | 2021-02-26 | 西京学院 | Basalt fiber water-permeable concrete and preparation method thereof |
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2021
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