CN113387613A - Polymer-based sea sand concrete and preparation method thereof - Google Patents
Polymer-based sea sand concrete and preparation method thereof Download PDFInfo
- Publication number
- CN113387613A CN113387613A CN202110766228.1A CN202110766228A CN113387613A CN 113387613 A CN113387613 A CN 113387613A CN 202110766228 A CN202110766228 A CN 202110766228A CN 113387613 A CN113387613 A CN 113387613A
- Authority
- CN
- China
- Prior art keywords
- sea sand
- concrete
- parts
- polymer
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 124
- 239000004567 concrete Substances 0.000 title claims abstract description 117
- 229920000642 polymer Polymers 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 52
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 238000002156 mixing Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 239000002952 polymeric resin Substances 0.000 claims abstract description 20
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims description 62
- 238000003756 stirring Methods 0.000 claims description 27
- 239000003085 diluting agent Substances 0.000 claims description 19
- 239000003822 epoxy resin Substances 0.000 claims description 13
- 229920000647 polyepoxide Polymers 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 5
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 claims description 3
- QXONIHMUSQFKJU-UHFFFAOYSA-N 2-(prop-1-enoxymethyl)oxirane Chemical compound CC=COCC1CO1 QXONIHMUSQFKJU-UHFFFAOYSA-N 0.000 claims description 3
- UUODQIKUTGWMPT-UHFFFAOYSA-N 2-fluoro-5-(trifluoromethyl)pyridine Chemical compound FC1=CC=C(C(F)(F)F)C=N1 UUODQIKUTGWMPT-UHFFFAOYSA-N 0.000 claims description 3
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 150000008064 anhydrides Chemical class 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 150000002978 peroxides Chemical class 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920002050 silicone resin Polymers 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 10
- 241000370738 Chlorion Species 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 238000011033 desalting Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 98
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 26
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000011374 ultra-high-performance concrete Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/12—Condensation polymers of aldehydes or ketones
- C04B26/122—Phenol-formaldehyde condensation polymers
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/18—Polyesters; Polycarbonates
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
- C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/26—Corrosion of reinforcement resistance
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses polymer-based sea sand concrete and a preparation method thereof, and relates to the technical field of building materials. The polymer-based sea sand concrete comprises the following raw materials in parts by weight: 1000 parts of sea sand, 30-130 parts of polymer resin, 10-50 parts of chopped fiber and 1-50 parts of curing agent. The preparation method comprises the step of mixing the raw materials of the polymer-based sea sand concrete. Adopt specific proportion's polymer resin and sea sand to cooperate in this application, polymer resin can form the coating film on the surface of sea sand to with the chlorion solidification in the sea sand on the sea sand surface, and then do not worry the problem that the reinforcing bar corrodes the reinforcing bar at polymer base sea sand concrete chlorion the reinforcing bar. The addition of the chopped fibers can enhance the strength of concrete, so that the prepared concrete has more excellent performance. Since the sea sand can be directly used in the application without desalting, the preparation process is simpler than the prior art.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to polymer-based sea sand concrete and a preparation method thereof.
Background
In the modern society, the development of the building field of China is fierce day by day, the building industry is continuously developing towards the direction of high-rise, large-scale and modernization, and the ultra-high performance concrete is used as a novel concrete material and begins to appear in the building construction field. The ultra-high performance concrete generally refers to concrete with strength grade higher than C100, the prior art generally adopts an extremely low water-cement ratio, adds ultra-fine active powder (such as silica fume, ground mineral powder, limestone powder and the like), is doped with fiber, and prepares the ultra-high performance concrete by a method combining high-temperature/steam/high-pressure curing, the process is complex, the extremely low water-cement ratio necessarily causes the situation that the viscosity of the concrete is large and the construction is difficult, and the high-temperature/steam/high-pressure curing is not suitable for large-scale engineering application.
With the implementation of the national strategy for ocean development, a large number of coastal and offshore projects are started and constructed, but because sea sand contains higher chloride ions and can erode steel bars in concrete, inland river sand and mountain sand have to be transported far away to produce concrete, so that the construction period is seriously influenced and the construction cost is increased. Meanwhile, as the environmental protection improvement in China is increased, resources such as inland river sand, mountain sand and the like are increasingly tense. Therefore, the demand for processing and utilizing sea sand is more and more urgent, and the traditional technology generally removes chloride ions in the sea sand by a fresh water cleaning mode, but most of sea sand resources are lack of fresh water, especially fresh water on islands is precious, and fresh water sand cleaning generates a large amount of salt-containing wastewater, so the technology has high process cost and is not environment-friendly. Some recent new technologies can cure chloride ions in sea sand, such as mesoporous silica materials, layered double hydroxides and the like, can absorb and cure the chloride ions, and have high absorption efficiency on the chloride ions in the sea sand, so that the cost is very high, and the technology has no large-scale popularization value.
In view of this, the invention is particularly proposed.
Disclosure of Invention
The invention aims to provide polymer-based sea sand concrete which is high in compressive strength and excellent in performance, can be used for solidifying chloride ions and relieves the problem that the chloride ions in the polymer-based sea sand concrete erode steel bars.
The invention aims to provide a preparation method of polymer-based sea sand concrete, which does not need desalination treatment on sea sand and has simpler preparation process compared with the prior art.
The invention is realized by the following steps:
in a first aspect, the invention provides a polymer-based sea sand concrete, which comprises the following raw materials in parts by weight: 1000 parts of sea sand, 30-130 parts of polymer resin, 10-50 parts of chopped fiber and 1-50 parts of curing agent.
In an optional embodiment, the raw materials further include, in parts by weight: 10-100 parts of reactive diluent;
preferably, the raw materials comprise the following components in parts by weight: 1000 parts of sea sand, 100 parts of high polymer resin, 130 parts of chopped fiber, 10-20 parts of reactive diluent and 5-35 parts of curing agent.
In an alternative embodiment, the reactive diluent is at least one of ethylene glycol diglycidyl ether, resorcinol diglycidyl ether, and propenyl glycidyl ether.
In an alternative embodiment, the polymer resin is at least one of an epoxy resin, a phenolic resin, a silicone resin, and an unsaturated polyester resin.
In an alternative embodiment, the chopped fibers are at least one of basalt fibers, glass fibers, steel fibers, polyethylene fibers, and polypropylene fibers;
preferably, the chopped fibers have a length of 5 to 30 mm.
In an alternative embodiment, the curing agent is at least one of an amine curing agent, an anhydride curing agent, and a peroxide curing agent.
In a second aspect, the present invention provides a method for preparing polymer-based sea sand concrete according to any one of the preceding embodiments, comprising: mixing the raw materials of the polymer-based sea sand concrete;
preferably, the raw materials for mixing the polymer-based sea sand concrete include: mixing the sea sand and the chopped fibers to obtain a first mixture; mixing the polymer resin and the curing agent to obtain a second mixture; mixing the first mixture and the second mixture to obtain a concrete mixture; and then carrying out die filling, curing and demoulding on the concrete mixture.
In an alternative embodiment, the chopped fibers are mixed with the sea sand by means of broadcasting;
preferably, the sea sand is dried naturally or manually before being used.
In an alternative embodiment, mixing the first mixture and the second mixture comprises mixing for 2-5min at a stirring speed of 30-60 rpm.
In an alternative embodiment, the molding the concrete mixture comprises: putting the concrete mixture into a mould, and vibrating for 2-5min until the surface of the concrete mixture is discharged, wherein the vibration frequency is 30-100 Hz;
preferably, curing the concrete mixture after being molded comprises: curing at 40-80 ℃ for 4-24 h;
preferably, the concrete mixture filled with the mold is subjected to vacuum defoaming for 5-60min before being cured.
The invention has the following beneficial effects: adopt specific proportion's polymer resin and sea sand to cooperate in this application, polymer resin can form the coating film on the surface of sea sand to with the chlorion solidification in the sea sand on the sea sand surface, and then do not worry the problem that the reinforcing bar corrodes the reinforcing bar at polymer base sea sand concrete chlorion the reinforcing bar. The addition of the chopped fibers can enhance the strength of concrete, so that the prepared polymer-based sea sand concrete has more excellent performance. Because the sea sand can be directly used in the application, and the sea sand does not need to be desalted, the preparation process of the concrete is simpler than the prior art.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The application provides polymer-based sea sand concrete, which comprises the following raw materials in parts by weight: 1000 parts of sea sand, 30-130 parts of polymer resin, 10-50 parts of chopped fiber and 1-50 parts of curing agent.
In the prior art, sea sand is usually required to be desalted when being used, the whole process is complex, and the application range of the sea sand is limited. And in this application, utilize sea sand and macromolecular resin to mix in order to prepare the concrete, macromolecular resin can form the coating film on the surface of sea sand to the chlorion solidification in the sea sand surface, and then do not worry the problem that the reinforcing bar corrodes the reinforcing bar at polymer base sea sand concrete chlorion the surface of sea sand, consequently can directly use the sea sand in this application, and need not to desalt the sea sand, operate more simply.
The effect of the polymer resin on the curing of chloride ions in sea sand was evaluated by the chloride ion curing efficiency:
chloride ion curing efficiency (sea sand chloride ion content-concrete chloride ion content)/sea sand chloride ion content × 100%.
Preferably, the raw materials further comprise, in parts by weight: 10-100 parts of reactive diluent.
Further, the raw materials comprise the following components in parts by weight: 1000 parts of sea sand, 100 parts of high polymer resin, 130 parts of chopped fiber, 10-20 parts of reactive diluent and 5-35 parts of curing agent.
In the application, the concrete with high compressive strength and high chloride ion curing efficiency can be obtained by regulating and controlling the matching proportion of the sea sand, the polymer resin, the chopped fiber, the reactive diluent and the curing agent.
Wherein the polymer resin is one of epoxy resin, phenolic resin, organic silicon resin and unsaturated polyester resin. The chopped fibers are at least one of basalt fibers, glass fibers, steel fibers, polyethylene fibers and polypropylene fibers; preferably, the chopped fibres have a length of from 5 to 30 mm. The reactive diluent is at least one of ethylene glycol diglycidyl ether, resorcinol diglycidyl ether and propenyl glycidyl ether. The curing agent is at least one of amine curing agent, anhydride curing agent and peroxide curing agent.
In addition, the application also provides a preparation method of the polymer-based sea sand concrete, which comprises the following steps:
mixing the raw materials of the polymer-based sea sand concrete.
Specifically, mixing sea sand and chopped fibers to obtain a first mixture; wherein the chopped fibers are mixed with the sea sand in a broadcasting mode; preferably, the sea sand is dried naturally or manually before use.
Mixing the polymer resin, the reactive diluent and the curing agent to obtain a second mixture;
mixing the first mixture and the second mixture for 2-5min under the condition that the stirring speed is 30-60rpm to obtain a concrete mixture;
and then carrying out die filling, curing and demoulding on the concrete mixture.
The step of molding the concrete mixture comprises: putting the concrete mixture into a mould, and vibrating for 2-5min until the surface of the concrete mixture is discharged, wherein the vibration frequency is 30-100 Hz;
curing the concrete mixture after being molded comprises: curing at 40-80 ℃ for 4-24 h;
and before curing the concrete mixture after the mold is filled, carrying out vacuum defoaming on the concrete mixture for 5-60 min.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The raw materials and the weight portions thereof in the embodiment are as follows: 1000 parts of sea sand, 20 parts of 10mm basalt chopped fiber, 100 parts of epoxy resin, 10 parts of reactive diluent and 35 parts of curing agent.
The preparation process of the polymer-based sea sand concrete of the embodiment comprises the following steps:
1. putting the dried sea sand into a stirrer, scattering the basalt chopped fibers while stirring, and uniformly stirring;
2. uniformly mixing epoxy resin, an active diluent and a curing agent in a separate container, adding the mixture into the stirrer, and stirring the mixture with sea sand and chopped fibers for 5min at a stirring speed of 40rpm to obtain a concrete mixture;
3. the concrete mixture is once filled into a mould and vibrated on a vibration table until the surface of the concrete is discharged with slurry, wherein the vibration frequency is 50 Hz;
4. and curing the concrete after the mold filling for 6 hours at the temperature of 70 ℃, and demolding to obtain the polymer-based sea sand concrete.
The compressive strength of the concrete is 152.2MPa, and the curing efficiency of the chloride ions is 86.6 percent.
Example 2
The raw materials and the weight portions thereof in the embodiment are as follows: 1000 parts of sea sand, 10 parts of 30mm steel fiber, 120 parts of epoxy resin, 15 parts of reactive diluent and 40 parts of curing agent.
The preparation process of the polymer-based sea sand concrete of the embodiment comprises the following steps:
1. putting the dried sea sand into a stirrer, spreading the steel fiber while stirring, and uniformly stirring;
2. uniformly mixing epoxy resin, an active diluent and a curing agent in a separate container, adding the mixture into the stirrer, and stirring the mixture with sea sand and chopped fibers for 5min at a stirring speed of 40rpm to obtain a concrete mixture;
3. the concrete mixture is once filled into a mould and vibrated on a vibration table until the surface of the concrete is discharged with slurry, wherein the vibration frequency is 50 Hz;
4. and curing the concrete after the mold filling for 6 hours at the temperature of 70 ℃, and demolding to obtain the polymer-based sea sand concrete.
The compressive strength of the concrete is measured to be 168.5MPa, and the curing efficiency of the chloride ions is 88.3 percent.
Example 3
The raw materials and the weight portions thereof in the embodiment are as follows: 1000 parts of sea sand, 10 parts of 20mm polypropylene chopped fiber, 100 parts of phenolic resin and 8 parts of curing agent.
The preparation process of the polymer-based sea sand concrete of the embodiment comprises the following steps:
1. putting the dried sea sand into a stirrer, broadcasting the polypropylene chopped fibers while stirring, and uniformly stirring;
2. uniformly mixing phenolic resin and a curing agent in a separate container, adding the mixture into the stirrer, and stirring the mixture with sea sand and chopped fibers for 5min at a stirring speed of 40rpm to obtain a concrete mixture;
3. the concrete mixture is once filled into a mould and vibrated on a vibration table until the surface of the concrete is discharged with slurry, wherein the vibration frequency is 50 Hz;
4. and curing the concrete after the mold filling for 5 hours at the temperature of 110 ℃, and demolding to obtain the polymer-based sea sand concrete.
The compressive strength of the concrete is measured to be 135.8MPa, and the curing efficiency of the chloride ions is 83.1 percent.
Example 4
The raw materials and the weight portions thereof in the embodiment are as follows: 1000 parts of sea sand, 20 parts of 10mm basalt chopped fiber, 100 parts of organic silicon resin and 20 parts of curing agent.
The preparation process of the polymer-based sea sand concrete of the embodiment comprises the following steps:
1. putting the dried sea sand into a stirrer, scattering the basalt chopped fibers while stirring, and uniformly stirring;
2. uniformly mixing the organic silicon resin and the curing agent in a separate container, adding the mixture into the stirrer, and stirring the mixture with the sea sand and the chopped fibers for 5min at the stirring speed of 40rpm to obtain a concrete mixture;
3. the concrete mixture is once filled into a mould and vibrated on a vibration table until the surface of the concrete is discharged with slurry, wherein the vibration frequency is 50 Hz;
4. and curing the concrete after the mold filling for 1 hour at the temperature of 200 ℃, and demolding to obtain the polymer-based sea sand concrete.
The compressive strength of the concrete was measured to be 151.5MPa, and the curing efficiency of chloride ions was measured to be 82.4%.
Example 5
The raw materials and the weight portions thereof in the embodiment are as follows: 1000 parts of sea sand, 20 parts of 10mm basalt chopped fiber, 130 parts of unsaturated polyester resin and 25 parts of curing agent.
The preparation process of the polymer-based sea sand concrete of the embodiment comprises the following steps:
1. putting the dried sea sand into a stirrer, scattering the basalt chopped fibers while stirring, and uniformly stirring;
2. uniformly mixing unsaturated polyester resin and a curing agent in a separate container, adding the mixture into the stirrer, and stirring the mixture with sea sand and chopped fibers for 5min at the stirring speed of 40rpm to obtain a concrete mixture;
3. the concrete mixture is once filled into a mould and vibrated on a vibration table until the surface of the concrete is discharged with slurry, wherein the vibration frequency is 50 Hz;
4. and curing the concrete after the mold filling for 2 hours at the temperature of 150 ℃, and demolding to obtain the polymer-based sea sand concrete.
The compressive strength of the concrete was measured to be 130.1MPa, and the curing efficiency of chloride ions was 80.6%.
Example 6
The raw materials and the weight portions thereof in the embodiment are as follows: 1000 parts of sea sand, 20 parts of 10mm basalt chopped fiber, 100 parts of epoxy resin, 10 parts of reactive diluent and 35 parts of curing agent.
The preparation process of the polymer-based sea sand concrete of the embodiment comprises the following steps:
1. putting the dried sea sand into a stirrer, scattering the basalt chopped fibers while stirring, and uniformly stirring;
2. uniformly mixing epoxy resin, an active diluent and a curing agent in a separate container, adding the mixture into the stirrer, and stirring the mixture with sea sand and chopped fibers for 5min at a stirring speed of 40rpm to obtain a concrete mixture;
3. the concrete mixture is once filled into a mould and vibrated on a vibration table until the surface of the concrete is discharged with slurry, wherein the vibration frequency is 50 Hz;
4. and (3) defoaming the mould filled with the premixed concrete in vacuum for 30min, curing for 6h at 70 ℃, and demoulding to obtain the polymer-based sea sand concrete.
The compressive strength of the concrete was measured to be 254.8MPa, and the curing efficiency of chloride ions was 86.9%.
Example 7
The raw materials and the weight portions thereof in the embodiment are as follows: 1000 parts of sea sand, 20 parts of 10mm basalt chopped fiber, 70 parts of epoxy resin, 10 parts of reactive diluent and 35 parts of curing agent.
The compressive strength of the concrete is measured to be 120MPa, and the curing efficiency of chloride ions is 85.2 percent.
Example 8
The raw materials and the weight portions thereof in the embodiment are as follows: 1000 parts of sea sand, 10 parts of 10mm basalt chopped fiber, 30 parts of epoxy resin, 10 parts of reactive diluent and 3 parts of curing agent.
The compressive strength of the concrete was measured to be 136MPa, and the curing efficiency of chloride ions was 83.1%.
Comparative example 1
This comparative example is essentially the same as example 1 except that the part by weight of the epoxy resin in example 1 was changed from 100 parts to 150 parts.
The compressive strength of the concrete was 169MPa and the curing efficiency of chloride ions was 89.2%.
Comparative example 2
This comparative example is essentially the same as example 1 except that the weight part of the epoxy resin in example 1 was changed from 100 parts to 20 parts.
The compressive strength of the concrete is measured to be 70MPa, and the curing efficiency of the chloride ions is measured to be 64.8%.
It can be seen from the compressive strength and the chloride ion curing efficiency of the concrete measured in the above examples 1-8 and comparative examples 1-2 that the compressive strength and the chloride ion curing effect can be effectively improved by using the polymer resin and the sea sand in a specific ratio.
To sum up, adopt specific proportion's macromolecular resin and sea sand to cooperate in this application, macromolecular resin can form the coating film on the surface of sea sand to the chlorion solidification in the sea sand is on the sea sand surface, and then does not worry the problem that the reinforcing bar is corroded the reinforcing bar to chlorion in polymer base sea sand concrete. The addition of the chopped fibers can enhance the strength of concrete, so that the prepared polymer-based sea sand concrete has more excellent performance. Because the sea sand can be directly used in the application, and the sea sand does not need to be desalted, the preparation process of the concrete is simpler than the prior art.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (10)
1. The polymer-based sea sand concrete is characterized by comprising the following raw materials in parts by weight: 1000 parts of sea sand, 30-130 parts of polymer resin, 10-50 parts of chopped fiber and 1-50 parts of curing agent.
2. The polymer-based sea sand concrete according to claim 1, further comprising the following raw materials in parts by weight: 10-100 parts of reactive diluent;
preferably, the raw materials comprise the following components in parts by weight: 1000 parts of sea sand, 100 parts of high polymer resin, 130 parts of chopped fiber, 10-20 parts of reactive diluent and 5-35 parts of curing agent.
3. The polymer-based sea sand concrete of claim 2, wherein the reactive diluent is at least one of ethylene glycol diglycidyl ether, resorcinol diglycidyl ether, and propenyl glycidyl ether.
4. The polymer-based sea sand concrete according to claim 1, wherein the polymer resin is at least one of epoxy resin, phenolic resin, silicone resin and unsaturated polyester resin.
5. The polymer-based sea sand concrete of claim 1, wherein said chopped fibers are at least one of basalt fibers, glass fibers, steel fibers, polyethylene fibers, and polypropylene fibers;
preferably, the chopped fibers have a length of 5 to 30 mm.
6. The polymer-based sea sand concrete of claim 1, wherein the curing agent is at least one of an amine curing agent, an anhydride curing agent, and a peroxide curing agent.
7. A method for the preparation of polymer-based sea sand concrete according to any one of claims 1 to 6, characterized in that it comprises: mixing the raw materials of the polymer-based sea sand concrete;
preferably, the raw materials for mixing the polymer-based sea sand concrete include: mixing the sea sand and the chopped fibers to obtain a first mixture; mixing the polymer resin and the curing agent to obtain a second mixture; mixing the first mixture and the second mixture to obtain a concrete mixture; and then carrying out die filling, curing and demoulding on the concrete mixture.
8. The method for preparing polymer-based sea sand concrete according to claim 7, wherein the chopped fibers are mixed with the sea sand by means of broadcasting;
preferably, the sea sand is dried naturally or manually before being used.
9. The method of preparing a polymer-based sea sand concrete according to claim 7, wherein mixing the first mixture and the second mixture comprises mixing at a stirring speed of 30-60rpm for 2-5 min.
10. The method of preparing polymer-based sea sand concrete according to claim 7, wherein the molding the concrete mixture comprises: putting the concrete mixture into a mould, and vibrating for 2-5min until the surface of the concrete mixture is discharged, wherein the vibration frequency is 30-100 Hz;
preferably, curing the concrete mixture after being molded comprises: curing at 40-80 ℃ for 4-24 h;
preferably, the concrete mixture filled with the mold is subjected to vacuum defoaming for 5-60min before being cured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110766228.1A CN113387613A (en) | 2021-07-07 | 2021-07-07 | Polymer-based sea sand concrete and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110766228.1A CN113387613A (en) | 2021-07-07 | 2021-07-07 | Polymer-based sea sand concrete and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113387613A true CN113387613A (en) | 2021-09-14 |
Family
ID=77625381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110766228.1A Pending CN113387613A (en) | 2021-07-07 | 2021-07-07 | Polymer-based sea sand concrete and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113387613A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104276777A (en) * | 2014-09-12 | 2015-01-14 | 河海大学 | Chloride ion immobilizing agent |
| JP2016179912A (en) * | 2015-03-23 | 2016-10-13 | 住友ベークライト株式会社 | Polymer cement composition, polymer cement mortar composition and polymer cement concrete structure |
| CN107572969A (en) * | 2017-10-19 | 2018-01-12 | 中国建筑科学研究院 | Sea sand ultrahigh-performance concrete and preparation method thereof |
| CN108178609A (en) * | 2018-02-09 | 2018-06-19 | 济南大学 | The sea sand cladding slurries and intensifying method of a kind of curable chlorion |
| CN108529917A (en) * | 2018-04-25 | 2018-09-14 | 同济大学 | A kind of sea sand chlorion curing materials and its application method |
| CN110318495A (en) * | 2019-07-10 | 2019-10-11 | 中国矿业大学 | One kind can assembled permanent formwork overlapping FRP tendons seawater sea sand Recycled Concrete Beams and preparation method thereof |
| CN110746140A (en) * | 2019-11-18 | 2020-02-04 | 哈尔滨工程大学 | Low-shrinkage high-corrosion-resistance high-strength resin concrete and preparation method thereof |
| CN110776337A (en) * | 2019-11-18 | 2020-02-11 | 哈尔滨工程大学 | Zero-constraint-shrinkage high-corrosion-resistance light resin concrete and preparation method thereof |
-
2021
- 2021-07-07 CN CN202110766228.1A patent/CN113387613A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104276777A (en) * | 2014-09-12 | 2015-01-14 | 河海大学 | Chloride ion immobilizing agent |
| JP2016179912A (en) * | 2015-03-23 | 2016-10-13 | 住友ベークライト株式会社 | Polymer cement composition, polymer cement mortar composition and polymer cement concrete structure |
| CN107572969A (en) * | 2017-10-19 | 2018-01-12 | 中国建筑科学研究院 | Sea sand ultrahigh-performance concrete and preparation method thereof |
| CN108178609A (en) * | 2018-02-09 | 2018-06-19 | 济南大学 | The sea sand cladding slurries and intensifying method of a kind of curable chlorion |
| CN108529917A (en) * | 2018-04-25 | 2018-09-14 | 同济大学 | A kind of sea sand chlorion curing materials and its application method |
| CN110318495A (en) * | 2019-07-10 | 2019-10-11 | 中国矿业大学 | One kind can assembled permanent formwork overlapping FRP tendons seawater sea sand Recycled Concrete Beams and preparation method thereof |
| CN110746140A (en) * | 2019-11-18 | 2020-02-04 | 哈尔滨工程大学 | Low-shrinkage high-corrosion-resistance high-strength resin concrete and preparation method thereof |
| CN110776337A (en) * | 2019-11-18 | 2020-02-11 | 哈尔滨工程大学 | Zero-constraint-shrinkage high-corrosion-resistance light resin concrete and preparation method thereof |
Non-Patent Citations (7)
| Title |
|---|
| 何建新: "《新型纤维材料学》", 31 July 2014, 东华大学出版社 * |
| 冯鹏等: "FRP与海砂混凝土组合应用的发展与创新", 《玻璃钢/复合材料》 * |
| 刘尚乐等: "《环氧胶粘剂》", 30 November 1978, 山西人民出版社 * |
| 王晓敏: "海砂混凝土中氯离子的作用机理及其固化研究", 《山西建筑》 * |
| 白文峰: "纤维增强聚合物混凝土及其界面与阻尼机理研究", 《中国博士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 马清浩: "《混凝土外加剂及建筑防水材料应用指南》", 30 June 1998, 中国建材工业出版社 * |
| 黄华县: "海砂混凝土氯离子的固化", 《腐蚀与防护》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110423081A (en) | More solid waste coordinate systems are for Stainless-steel fibre ultra-high performance concrete and preparation method thereof | |
| CN113968686B (en) | Regeneration method of waste concrete and modified regenerated concrete | |
| CN109574582B (en) | Pervious concrete with heavy metal ion adsorption capacity and preparation method thereof | |
| CN104016636A (en) | Underwater pipeline ballasting anti-floating material and preparing method thereof | |
| CN107651907A (en) | The environmental high ductility cement-base composite material and method prepared with organic waste | |
| CN113816690A (en) | Concrete repairing material and preparation method thereof | |
| CN102976667B (en) | Plant-growing concrete material | |
| CN110642577A (en) | Preparation process of corrosion-resistant concrete pipe pile | |
| CN108672648A (en) | A kind of casting sand type binder, preparation method and application | |
| CN113387613A (en) | Polymer-based sea sand concrete and preparation method thereof | |
| CN101012127A (en) | Method of manufacturing foam concrete by sludge protein hydrolysate | |
| CN106892613A (en) | It is co-doped with concrete segment of waste stone dust and shoddy and preparation method thereof | |
| CN109336462A (en) | A kind of high resistance to compression long-life porous disc and preparation method thereof | |
| CN115368058A (en) | Preparation method and application of artificial stone | |
| CN115124317A (en) | Composite activated and regenerated micro-powder concrete based on slurry wrapping process and preparation method thereof | |
| CN113501694A (en) | Anti-cracking environment-friendly concrete | |
| CN113773001A (en) | Geopolymer material containing iron ore tailings powder and granite stone powder and preparation method thereof | |
| CN112979340A (en) | Method for maintaining reinforced concrete | |
| CN112573865A (en) | High-strength high-impermeability few-layer graphene concrete and preparation method thereof | |
| JP6646908B2 (en) | Concrete member for high-speed traffic system structure and method of manufacturing the same | |
| CN107382143A (en) | A kind of granolith | |
| JP2011168471A (en) | Waste gypsum regenerated concrete | |
| CN115626800B (en) | Boron mud harmless building material and preparation method and application thereof | |
| CN112592115A (en) | Polypropylene modified concrete and preparation method thereof | |
| CN115572135B (en) | Preparation method of high-strength corrosion-resistant recycled concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210914 |