CN115477497A - Concrete curing agent capable of reducing water and improving strength and preparation method thereof - Google Patents
Concrete curing agent capable of reducing water and improving strength and preparation method thereof Download PDFInfo
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- CN115477497A CN115477497A CN202211180004.3A CN202211180004A CN115477497A CN 115477497 A CN115477497 A CN 115477497A CN 202211180004 A CN202211180004 A CN 202211180004A CN 115477497 A CN115477497 A CN 115477497A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000004567 concrete Substances 0.000 title claims abstract description 65
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 44
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims abstract description 34
- WJRBRSLFGCUECM-UHFFFAOYSA-N hydantoin Chemical compound O=C1CNC(=O)N1 WJRBRSLFGCUECM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229940091173 hydantoin Drugs 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 22
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 17
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 17
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 17
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011777 magnesium Substances 0.000 claims abstract description 17
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 17
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 17
- 239000011775 sodium fluoride Substances 0.000 claims abstract description 17
- 235000013024 sodium fluoride Nutrition 0.000 claims abstract description 17
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 17
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 13
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical group CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 claims abstract description 8
- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical compound CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 25
- 239000008213 purified water Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 19
- 239000004568 cement Substances 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000055006 Calcitonin Human genes 0.000 description 1
- 108060001064 Calcitonin Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- BBBFJLBPOGFECG-VJVYQDLKSA-N calcitonin Chemical compound N([C@H](C(=O)N[C@@H](CC(C)C)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC=1NC=NC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC=1C=CC(O)=CC=1)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)NCC(=O)N[C@@H](CO)C(=O)NCC(=O)N[C@@H]([C@@H](C)O)C(=O)N1[C@@H](CCC1)C(N)=O)C(C)C)C(=O)[C@@H]1CSSC[C@H](N)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CO)C(=O)N[C@@H]([C@@H](C)O)C(=O)N1 BBBFJLBPOGFECG-VJVYQDLKSA-N 0.000 description 1
- 229960004015 calcitonin Drugs 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a concrete curing agent capable of reducing water and improving strength and a preparation method thereof, and relates to the technical field of soil curing agents, wherein the concrete curing agent capable of reducing water and improving strength comprises the following raw material components in parts by weight: 2.5-3.5 parts of magnesium fluosilicate, 0.8-1.2 parts of sodium carbonate, 0.4-0.6 part of sodium fluoride, 18-22 parts of calcium aluminate, 9-11 parts of sodium aluminate, 0.4-0.6 part of sodium sulfate, 14-16 parts of hydantoin resin and 3-5 parts of impregnant; the impregnant is n-octyl triethoxysilane and isobutyl triethoxysilane. The concrete curing agent capable of reducing water and improving strength provided by the invention can reduce water and improve strength, can shorten the construction period and save the cost, and can obviously improve the compressive strength and the water stability and reduce the dry shrinkage deformation by using the concrete curing agent provided by the invention. Thereby prolonging the service life and reducing the later maintenance cost.
Description
Technical Field
The invention relates to the technical field of soil curing agents, in particular to a concrete curing agent capable of reducing water and improving strength and a preparation method thereof.
Background
The water reducing agent has a dispersing effect on the mixed cement particles, reduces the unit water consumption, improves the fluidity of concrete mixtures, or reduces the unit cement consumption, thereby saving the cement. Most of them are polycarboxylic anionic surfactants, such as lignosulfonate and naphthalene sulfonate formaldehyde polymer.
The reinforcing agent can accelerate the hydration speed of cement, can improve the early strength of concrete and has certain water reducing and reinforcing functions. It includes inorganic substances such as chloride, sulfate, nitrite, chromate, etc., organic substances such as urea, triethanolamine, calcitonin, etc., and their complexes.
The concrete spraying refers to a concrete construction technology that concrete or a mixture is conveyed to a nozzle of a spraying machine through a pipeline under the action of high pressure, mixed with water, sprayed to a specified position at high speed and quickly set and hardened to form a support form. The method has the characteristics of simple construction, strong adaptability, high structural compactness and the like, and is widely applied to the fields of civil engineering, tunnels, bridges and the like. However, in practical application projects, sprayed concrete often faces the problems of strong corrosivity of an accelerator, reduced later strength, easy generation of shrinkage cracks, high rebound resilience, poor corrosion resistance and the like, and further leads to the problems of safety, economy and the like caused by construction by the method. The existing concrete admixture only has single water reducing or single enhancing function, and does not have the concrete admixture with both water reducing and enhancing functions.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a concrete curing agent capable of reducing water and improving strength and a preparation method thereof. The concrete curing agent capable of reducing water and improving strength provided by the invention can reduce water and improve strength, can shorten the construction period and save the cost, and can obviously improve the compressive strength and the water stability and reduce the dry shrinkage deformation by using the concrete curing agent provided by the invention. Thereby prolonging the service life and reducing the later maintenance cost.
The invention aims to protect a concrete curing agent capable of reducing water and improving strength, which comprises the following raw material components in parts by weight: 2.5-3.5 parts of magnesium fluosilicate, 0.8-1.2 parts of sodium carbonate, 0.4-0.6 part of sodium fluoride, 18-22 parts of calcium aluminate, 9-11 parts of sodium aluminate, 0.4-0.6 part of sodium sulfate, 14-16 parts of hydantoin resin and 3-5 parts of impregnant;
the impregnant is n-octyl triethoxysilane and isobutyl triethoxysilane.
Preferably, the weight part ratio of the n-octyl triethoxysilane to the isobutyl triethoxysilane is 1:1.
further preferably, the concrete curing agent capable of reducing water and improving strength comprises the following raw material components in parts by weight: 3 parts of magnesium fluosilicate, 1 part of sodium carbonate, 0.5 part of sodium fluoride, 20 parts of calcium aluminate, 10 parts of sodium aluminate, 0.5 part of sodium sulfate, 15 parts of hydantoin resin and 4 parts of impregnant.
Further preferably, the concrete curing agent capable of reducing water and improving strength comprises the following raw material components in parts by weight: 2.5 parts of magnesium fluosilicate, 0.8 part of sodium carbonate, 0.4 part of sodium fluoride, 18 parts of calcium aluminate, 9 parts of sodium aluminate, 0.4 part of sodium sulfate, 14 parts of hydantoin resin and 3 parts of impregnant.
Further preferably, the concrete curing agent capable of reducing water and improving strength comprises the following raw material components in parts by weight: 3.5 parts of magnesium fluosilicate, 1.2 parts of sodium carbonate, 0.6 part of sodium fluoride, 22 parts of calcium aluminate, 11 parts of sodium aluminate, 0.6 part of sodium sulfate, 16 parts of hydantoin resin and 5 parts of impregnant.
The invention also aims to protect the preparation method of the concrete curing agent capable of reducing water and improving strength, which comprises the following steps:
s1, mixing magnesium fluosilicate, sodium carbonate, sodium fluoride, calcium aluminate, sodium aluminate and sodium sulfate to obtain a mixture, injecting purified water into the mixture, heating, stirring, cooling, preserving heat and filtering to obtain a mixture solution;
s2, injecting the hydantoin resin into a stirrer, injecting purified water, heating, stirring, standing, adding the mixture solution and the impregnant prepared in the step S1, heating again, stirring again, and cooling to obtain the concrete curing agent capable of reducing water and improving strength.
Preferably, in step S1, the temperature is raised to 85 ℃, and the stirring is performed at a speed of 600rpm for 1-2 hours; the weight part ratio of the sodium carbonate to the purified water is 1:20.
preferably, in step S1, the temperature is reduced to 20 to 25 ℃, and the temperature is maintained for 4 to 6 hours.
Preferably, in step S2, the temperature is raised to 65 ℃, the stirring is performed at a speed of 450rpm for 1-2 hours, and the standing is performed for 1-2 hours; the weight part ratio of the hydantoin resin to the purified water is 3:20.
preferably, in step S2, the temperature is raised to 70 ℃ again, and the re-stirring is performed at 450rpm for 1-2 hours.
The invention has the beneficial effects that:
(1) The concrete curing agent capable of reducing water and improving strength provided by the invention can reduce water and improve strength, can shorten the construction period and save the cost, and can obviously improve the compressive strength and the water stability and reduce the dry shrinkage deformation by using the concrete curing agent provided by the invention. Thereby prolonging the service life and reducing the later maintenance cost.
(2) The preparation method of the concrete curing agent capable of reducing water and improving strength provided by the invention is simple to operate, stable in technology, easy to obtain raw materials, excellent in prepared product effect and extremely high in popularization value.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
Example 1
The embodiment provides a concrete curing agent capable of reducing water and improving strength, which comprises the following raw material components in parts by weight: 3 parts of magnesium fluosilicate, 1 part of sodium carbonate, 0.5 part of sodium fluoride, 20 parts of calcium aluminate, 10 parts of sodium aluminate, 0.5 part of sodium sulfate, 15 parts of hydantoin resin and 4 parts of impregnant.
Wherein the impregnant is prepared from the following components in parts by weight of 1:1 n-octyltriethoxysilane and isobutyltriethoxysilane.
The preparation method of the concrete curing agent capable of reducing water and improving strength comprises the following steps:
s1, mixing magnesium fluosilicate, sodium carbonate, sodium fluoride, calcium aluminate, sodium aluminate and sodium sulfate to obtain a mixture, injecting purified water into the mixture, heating, stirring, cooling, preserving heat and filtering to obtain a mixture solution;
s2, injecting the hydantoin resin into a stirrer, injecting purified water, heating, stirring, standing, adding the mixture solution and the impregnant prepared in the step S1, heating again, stirring again, and cooling to obtain the concrete curing agent capable of reducing water and improving strength.
In the step S1, the temperature is raised to 85 ℃, and the stirring is carried out for 1.5 hours at the speed of 600 rpm; the weight portion ratio of sodium carbonate to purified water is 1:20.
in the step S1, the temperature is reduced to 20 ℃, and the temperature is kept for 5 hours.
In the step S2, the temperature is raised to 65 ℃, the stirring is carried out for 1.5 hours at the speed of 450rpm, and the standing is carried out for 1.5 hours; the weight part ratio of the hydantoin resin to the purified water is 3:20.
in step S2, the temperature was again raised to 70 ℃ and the mixture was again stirred at 450rpm for 1.5 hours.
Example 2
The embodiment provides a concrete curing agent capable of reducing water and improving strength, which comprises the following raw material components in parts by weight: 2.5 parts of magnesium fluosilicate, 0.8 part of sodium carbonate, 0.4 part of sodium fluoride, 18 parts of calcium aluminate, 9 parts of sodium aluminate, 0.4 part of sodium sulfate, 14 parts of hydantoin resin and 3 parts of impregnant.
Wherein the impregnant is prepared from the following components in parts by weight of 1:1 n-octyltriethoxysilane and isobutyltriethoxysilane.
The preparation method of the concrete curing agent capable of reducing water and improving strength comprises the following steps:
s1, mixing magnesium fluosilicate, sodium carbonate, sodium fluoride, calcium aluminate, sodium aluminate and sodium sulfate to obtain a mixture, injecting purified water into the mixture, heating, stirring, cooling, preserving heat and filtering to obtain a mixture solution;
s2, injecting the hydantoin resin into a stirrer, injecting purified water, heating, stirring, standing, adding the mixture solution and the impregnant prepared in the step S1, heating again, stirring again, and cooling to obtain the concrete curing agent capable of reducing water and improving strength.
In the step S1, the temperature is raised to 85 ℃, and the stirring is carried out for 1.5 hours at the speed of 600 rpm; the weight portion ratio of the sodium carbonate to the purified water is 1:20.
in the step S1, the temperature is reduced to 20 ℃, and the temperature is kept for 5 hours.
In the step S2, the temperature is raised to 65 ℃, the stirring is carried out for 1.5 hours at the speed of 450rpm, and the standing is carried out for 1.5 hours; the weight part ratio of the hydantoin resin to the purified water is 3:20.
in step S2, the temperature was again raised to 70 ℃ and the mixture was again stirred at 450rpm for 1.5 hours.
Example 3
The embodiment provides a concrete curing agent capable of reducing water and improving strength, which comprises the following raw material components in parts by weight: 3.5 parts of magnesium fluosilicate, 1.2 parts of sodium carbonate, 0.6 part of sodium fluoride, 22 parts of calcium aluminate, 11 parts of sodium aluminate, 0.6 part of sodium sulfate, 16 parts of hydantoin resin and 5 parts of impregnant.
Wherein the impregnant is prepared from the following components in parts by weight of 1:1 n-octyltriethoxysilane and isobutyltriethoxysilane.
The preparation method of the concrete curing agent capable of reducing water and improving strength comprises the following steps:
s1, mixing magnesium fluosilicate, sodium carbonate, sodium fluoride, calcium aluminate, sodium aluminate and sodium sulfate to obtain a mixture, injecting purified water into the mixture, heating, stirring, cooling, preserving heat and filtering to obtain a mixture solution;
s2, injecting the hydantoin resin into a stirrer, injecting purified water, heating, stirring, standing, adding the mixture solution and the impregnant prepared in the step S1, heating again, stirring again, and cooling to obtain the concrete curing agent capable of reducing water and improving strength.
In the step S1, the temperature is raised to 85 ℃, and the stirring is carried out for 1.5 hours at the speed of 600 rpm; the weight portion ratio of the sodium carbonate to the purified water is 1:20.
in the step S1, the temperature is reduced to 20 ℃, and the temperature is kept for 5 hours.
In the step S2, the temperature is raised to 65 ℃, the stirring is carried out for 1.5 hours at the speed of 450rpm, and the standing is carried out for 1.5 hours; the weight part ratio of the hydantoin resin to the purified water is 3:20.
in step S2, the temperature was again raised to 70 ℃ and the mixture was again stirred at 450rpm for 1.5 hours.
Test examples
Test of the effects of the concrete curing agents prepared in examples 1 to 3 for reducing water and improving strength
The concrete curing agents capable of reducing water and improving strength prepared in examples 1 to 3 were used to spray concrete as test groups 1 to 3, and the control group is sprayed with concrete without adding a concrete curing agent.
(1) Compressive strength without limit of measurement
The test method comprises the following steps: JTG E51-2009 test Specification for inorganic Binder stabilizing Material for road engineering
Testing an instrument: universal press
And (3) testing results: see table 1.
TABLE 1
As can be seen from Table 1, the concrete curing agent provided by the invention can reduce water and improve strength, and can obviously improve the compressive strength of concrete.
(2) Drying shrinkage test
The test method comprises the following steps: JC/T603-2004 cement mortar dry shrinkage test method
Testing an instrument: dry shrinkage tester
And (3) testing results: see table 2.
TABLE 2
| Group of | 28 days of shrinkage strain |
| Test group 1 | 3.99×10 -3 |
| Test group 2 | 4.03×10 -3 |
| Test group 3 | 4.01×10 -3 |
| Control group | 4.98×10 -3 |
As is apparent from Table 2, the use of the concrete curing agent of the present invention for reducing water and improving strength can significantly reduce the dry shrinkage distortion of concrete.
(3) Water stability test
The test method comprises the following steps: curing for 7 days under standard curing conditions, and dividing the test pieces into two groups, wherein one group is cured for 1 day, 3 days and 7 days by soaking in water; the other group is maintained under the standard condition, and the water stability coefficient calculation method comprises the following steps: strength of the soaked and cured test piece/strength of the standard cured test piece.
And (3) testing results: see table 3.
| Group of | 1 day | 3 days | 7 days |
| Test group 1 | 0.98 | 0.94 | 0.89 |
| Test group 2 | 0.96 | 0.91 | 0.86 |
| Test group 3 | 0.97 | 0.93 | 0.88 |
| Control group | 0.81 | 0.76 | 0.70 |
As can be seen from Table 3, the water stability of concrete can be remarkably enhanced by using the concrete curing agent capable of reducing water and improving strength, provided by the invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being covered by the appended claims and their equivalents.
Claims (10)
1. A concrete curing agent capable of reducing water and improving strength is characterized in that: the concrete curing agent capable of reducing water and improving strength comprises the following raw material components in parts by weight: 2.5-3.5 parts of magnesium fluosilicate, 0.8-1.2 parts of sodium carbonate, 0.4-0.6 part of sodium fluoride, 18-22 parts of calcium aluminate, 9-11 parts of sodium aluminate, 0.4-0.6 part of sodium sulfate, 14-16 parts of hydantoin resin and 3-5 parts of impregnant; the impregnant is n-octyl triethoxysilane and isobutyl triethoxysilane.
2. The concrete curing agent capable of reducing water and improving strength according to claim 1, wherein: the weight part ratio of the n-octyl triethoxysilane to the isobutyl triethoxysilane is 1:1.
3. the concrete curing agent capable of reducing water and improving strength according to claim 2, wherein: the concrete curing agent capable of reducing water and improving strength comprises the following raw material components in parts by weight: 3 parts of magnesium fluosilicate, 1 part of sodium carbonate, 0.5 part of sodium fluoride, 20 parts of calcium aluminate, 10 parts of sodium aluminate, 0.5 part of sodium sulfate, 15 parts of hydantoin resin and 4 parts of impregnant.
4. The concrete curing agent capable of reducing water and improving strength according to claim 2, wherein: the concrete curing agent capable of reducing water and improving strength comprises the following raw material components in parts by weight: 2.5 parts of magnesium fluosilicate, 0.8 part of sodium carbonate, 0.4 part of sodium fluoride, 18 parts of calcium aluminate, 9 parts of sodium aluminate, 0.4 part of sodium sulfate, 14 parts of hydantoin resin and 3 parts of impregnant.
5. The concrete curing agent capable of reducing water and improving strength according to claim 2, wherein: the concrete curing agent capable of reducing water and improving strength comprises the following raw material components in parts by weight: 3.5 parts of magnesium fluosilicate, 1.2 parts of sodium carbonate, 0.6 part of sodium fluoride, 22 parts of calcium aluminate, 11 parts of sodium aluminate, 0.6 part of sodium sulfate, 16 parts of hydantoin resin and 5 parts of impregnant.
6. The method for preparing the concrete curing agent capable of reducing water and improving strength as claimed in any one of claims 1 to 5, wherein: the preparation method of the concrete curing agent capable of reducing water and improving strength comprises the following steps:
s1, mixing magnesium fluosilicate, sodium carbonate, sodium fluoride, calcium aluminate, sodium aluminate and sodium sulfate to obtain a mixture, injecting purified water into the mixture, heating, stirring, cooling, preserving heat and filtering to obtain a mixture solution;
s2, injecting the hydantoin resin into a stirrer, injecting purified water, heating, stirring, standing, adding the mixture solution and the impregnant prepared in the step S1, heating again, stirring again, and cooling to obtain the concrete curing agent capable of reducing water and improving strength.
7. The method for preparing the concrete curing agent capable of reducing water and improving strength according to claim 6, wherein the concrete curing agent comprises the following components in percentage by weight: in the step S1, the temperature is raised to 85 ℃, and the stirring is carried out at the speed of 600rpm for 1-2 hours; the weight portion ratio of the sodium carbonate to the purified water is 1:20.
8. the method for preparing the concrete curing agent capable of reducing water and improving strength according to claim 6, wherein the concrete curing agent comprises the following components in percentage by weight: in the step S1, the temperature is reduced to 20-25 ℃, and the heat preservation is carried out for 4-6 hours.
9. The method for preparing the concrete curing agent capable of reducing water and improving strength according to claim 6, wherein the method comprises the following steps: in the step S2, the temperature is raised to 65 ℃, the stirring is carried out for 1-2 hours at the speed of 450rpm, and the standing is carried out for 1-2 hours; the weight part ratio of the hydantoin resin to the purified water is 3:20.
10. the method for preparing the concrete curing agent capable of reducing water and improving strength according to claim 6, wherein the concrete curing agent comprises the following components in percentage by weight: in the step S2, the temperature is raised to 70 ℃ again, and the re-stirring is carried out for 1 to 2 hours at the speed of 450 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211180004.3A CN115477497A (en) | 2022-09-27 | 2022-09-27 | Concrete curing agent capable of reducing water and improving strength and preparation method thereof |
Applications Claiming Priority (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445504A (en) * | 2017-09-11 | 2017-12-08 | 贵州凯襄新材料有限公司 | A kind of accelerator and preparation method thereof |
| CN109369061A (en) * | 2018-10-22 | 2019-02-22 | 东莞理工学院 | A kind of pervious concrete additive and pervious concrete |
| CN114671707A (en) * | 2022-04-22 | 2022-06-28 | 江苏路强智慧交通科技有限公司 | Weather-resistant luminous protective paint for concrete traffic guardrail and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445504A (en) * | 2017-09-11 | 2017-12-08 | 贵州凯襄新材料有限公司 | A kind of accelerator and preparation method thereof |
| CN109369061A (en) * | 2018-10-22 | 2019-02-22 | 东莞理工学院 | A kind of pervious concrete additive and pervious concrete |
| CN114671707A (en) * | 2022-04-22 | 2022-06-28 | 江苏路强智慧交通科技有限公司 | Weather-resistant luminous protective paint for concrete traffic guardrail and preparation method thereof |
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Application publication date: 20221216 |