CN116675465A - Foam stabilizing and carbonization resisting reinforcing agent for full solid waste foam concrete and preparation method and application thereof - Google Patents
Foam stabilizing and carbonization resisting reinforcing agent for full solid waste foam concrete and preparation method and application thereof Download PDFInfo
- Publication number
- CN116675465A CN116675465A CN202310598508.5A CN202310598508A CN116675465A CN 116675465 A CN116675465 A CN 116675465A CN 202310598508 A CN202310598508 A CN 202310598508A CN 116675465 A CN116675465 A CN 116675465A
- Authority
- CN
- China
- Prior art keywords
- carbonization
- foam concrete
- foam
- reinforcing agent
- ettringite
- 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
- 239000011381 foam concrete Substances 0.000 title claims abstract description 75
- 239000006260 foam Substances 0.000 title claims abstract description 58
- 239000002910 solid waste Substances 0.000 title claims abstract description 54
- 238000003763 carbonization Methods 0.000 title claims abstract description 46
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 38
- 239000012744 reinforcing agent Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910001653 ettringite Inorganic materials 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002562 thickening agent Substances 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 15
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 238000000227 grinding Methods 0.000 claims description 22
- 239000002002 slurry Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 19
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 16
- 229910052708 sodium Inorganic materials 0.000 claims description 16
- 239000011734 sodium Substances 0.000 claims description 16
- -1 alkenyl sulfonate Chemical compound 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000740 bleeding effect Effects 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000001238 wet grinding Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- 238000001354 calcination Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 235000021120 animal protein Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005303 weighing 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a foam stabilizing and carbonization resisting reinforcing agent for full solid waste foam concrete, and a preparation method and application thereof. According to the invention, ettringite, a polycarboxylate water reducer, a thickener and water are used as raw materials, nano ettringite is obtained through wet grinding, and then the nano ettringite is uniformly mixed with the thickener to obtain the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete. When the mixing amount of the foam stabilizing and carbonization resisting reinforcing agent is 2.8-8.8%, the bleeding rate of the foam is less than or equal to 10% in 1 hour, the 7-day strength of the fully solid waste foam concrete is improved by more than 30%, the 28-day strength is improved by more than 20%, and the carbonization resisting capability in 28 days is improved by more than 20%.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a foam stabilizing and carbonization resisting reinforcing agent for full solid waste foam concrete, and a preparation method and application thereof.
Background
Along with the acceleration of modern construction in China, energy conservation of buildings and green construction materials are the necessary trend of development. The foam concrete is used as a porous cement-based material, has the characteristics of energy conservation, light weight, fire resistance and the like, and is a representative green building material. However, the current foam concrete preparation consumes a large amount of cement, has high carbon emission and low green degree. And the slurry stability is poor in the preparation process of the foam concrete, so that the performance of the foam concrete is seriously damaged. Therefore, the industrial solid waste is used for partially or completely replacing cement in the foam concrete to prepare the full solid waste foam concrete, and the method has important significance for improving the green degree of the foam concrete.
In addition, the stability of the foam is critical to the performance of the foam concrete. The voids in the foam concrete are mostly introduced by the addition of foam, and the prefabricated foam plays a decisive role in improving the voids of the foam concrete. In general, the higher the stability of the foam added, the more uniform the size distribution, the better the performance of the foam concrete. And the foam concrete has high porosity, and compared with common concrete, the foam concrete has more internal communication holes and more serious carbonization, and has great influence on the performance of the foam concrete. Therefore, the preparation of the high-steady-state foam improves the carbonization resistance of the foam concrete and is important to the improvement of the performance of the foam concrete.
Disclosure of Invention
In view of the above, the invention aims to provide a preparation method of a foam stabilizing and carbonization resisting reinforcing agent for full solid waste foam concrete, so as to solve the problem of poor foam concrete performance caused by unstable foam in the existing foam concrete preparation.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the preparation method of the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete comprises the following steps:
1) C is C 3 A and CaSO 4 ·2H 2 O is uniformly mixed in a molar ratio of 1:3, and a certain amount of deionized water is added, and is uniformly stirred, and reacts for 5-7 days under the condition of nitrogen protection and room temperature to obtain ettringite;
2) Adding ettringite, deionized water and a polycarboxylate water reducer into a wet mill according to the mass ratio of 1:1.3-1.6:0.01-0.04, grinding for 90-120min under the protection of nitrogen at the rotating speed of 350-400rpm, and filtering the grinding body to obtain nano ettringite slurry;
3) And (3) adding a thickening agent into the nano ettringite slurry according to the mass ratio of (2-8) to (0.4-0.8), and stirring until the mixture is uniform to obtain the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete.
Optionally, the grinding body in step 2) is a zirconia grinding body, and the grading of the zirconia grinding body is 2.4mm:1.4mm:0.8 mm=1:1:2.
Optionally, the total mass of the abrasive body in step 2) is 5-7 times the mass of the ettringite.
Optionally, the solid content of the polycarboxylate water reducer in the step 2) is 39-41%, and the water reducing rate is 30-32%.
Optionally, the median particle size of the nano ettringite in the nano ettringite slurry in step 2) is 100-250nm.
Optionally, in the step 3), the thickener is a mixture of the temperature-roller rubber and the alpha-sodium alkenyl sulfonate, and the mass ratio of the temperature-roller rubber to the alpha-sodium alkenyl sulfonate is (1-4) to 6.
The second object of the present invention is to provide a foam stabilizing and anti-carbonization reinforcing agent for all-solid waste foam concrete, which is prepared by the above method.
The third object of the invention is to provide an application of the foam stabilizing and carbonization resisting reinforcing agent for the all-solid waste foam concrete in the all-solid waste foam concrete, wherein in the application, the cementing material of the all-solid waste foam concrete is a ternary cementing material system consisting of slag, phosphogypsum and steel slag, and the mixing amount of the foam stabilizing and carbonization resisting reinforcing agent for the all-solid waste foam concrete is 2.8-8.8% of the mass of water used for preparing the foam for the all-solid waste foam concrete.
The preparation mechanism of the invention:
according to the invention, ettringite, a polycarboxylate water reducer, a thickener and water are taken as raw materials, firstly, nano ettringite is obtained through wet grinding, and then the nano ettringite is uniformly mixed with the thickener to obtain the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete, wherein the nano ettringite prepared through wet grinding can increase the flow resistance of foam liquid film liquid so as to limit the discharge of the film liquid, and on the other hand, the nano ettringite can absorb a large amount of free energy of the liquid film, so that the shrinkage force of bubbles is reduced, and moreover, the nano ettringite can improve the strength of the liquid film, inhibit the cracking and gas diffusion of the liquid film, and realize the effect of stabilizing the foam under the combined action of the nano ettringite and the thickener. In addition, ettringite is used as one of main hydration products of all-solid waste foam concrete (ternary cementing material system composed of slag, phosphogypsum and steel slag), and due to the crystal nucleus induction effect, the added nano ettringite becomes ettringite nucleation points, so that the formation of hydration products is promoted, the compactness of the wall of the foam concrete hole is improved, the number of closed holes is increased, and the carbonization resistance of the foam concrete is remarkably improved.
Compared with the prior art, the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete has the following advantages:
1. according to the invention, by adopting a nano particle stable foam principle, high-stability foam is prepared, and meanwhile, the generation of ettringite is promoted by adopting the crystal nucleus induction effect of nano ettringite, so that a more compact pore wall structure is obtained, and the carbonization resistance is improved. The foam stabilizing and carbonization resisting reinforcing agent for the fully solid waste foam concrete prepared by the invention has the advantages that when the mixing amount of the foam is 2.8-8.8%, the bleeding rate of the foam is less than or equal to 10% in 1 hour, the 7-day strength of the foam concrete is improved by more than 30%, the 28-day strength is improved by more than 20%, and the carbonization resisting capability of the 28d is improved by more than 20%.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions and effects of the present invention, several embodiments will be provided below, and it should be apparent that the following description is merely an embodiment, which does not limit the scope of protection of the present invention.
Example 1
The preparation method of the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete comprises the following steps:
1) C is C 3 A and CaSO 4 ·2H 2 O is uniformly mixed in a molar ratio of 1:3, the same asAdding deionized water, stirring, and reacting at room temperature under nitrogen protection for 5-7 days to obtain ettringite, wherein C is used 3 A analytically pure Ca (OH) produced by the national drug group Co., ltd 2 And Al (OH) 3 Calcining and preparing the mixture; caSO used 4 ·2H 2 O is a commercially available analytically pure product;
2) Adding the ettringite, deionized water and a polycarboxylate water reducer in the step 1) into a wet mill according to the mass ratio of 1:1.3:0.01, then adding a zirconia grinding body with the mass of 5 times of the ettringite and the grading of 2.4mm:1.4mm:0.8 mm=1:1:2, grinding for 90min under the protection of nitrogen at the speed of 350rpm, and filtering the grinding body to obtain nano ettringite slurry with the median particle diameter of 250nm, wherein the solid content of the polycarboxylate water reducer is 39 percent and the water reducing rate is 30 percent;
3) And (2) adding a thickening agent into the nano ettringite slurry in the step (2) according to the mass ratio of 2:0.4, and stirring uniformly to obtain the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete, wherein the thickening agent is a mixture of the temperature roller rubber and the alpha-sodium alkenyl sulfonate, and the mass ratio of the temperature roller rubber to the alpha-sodium alkenyl sulfonate is 4:6.
Example 2
This embodiment differs from embodiment 1 in that: in step 3) of this example, the mass ratio of nano ettringite slurry to thickener was 3:0.5, and the mass ratio of the hotplate gum to sodium alpha-alkenyl sulfonate was 2:6.
Example 3
This embodiment differs from embodiment 1 in that: the preparation method of the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete comprises the following steps:
1) C is C 3 A and CaSO 4 ·2H 2 O is uniformly mixed in a molar ratio of 1:3, a certain amount of deionized water is added, the mixture is uniformly stirred, and the mixture reacts for 5 to 7 days under the condition of nitrogen protection and room temperature to obtain ettringite, wherein C is used 3 A analytically pure Ca (OH) produced by the national drug group Co., ltd 2 And Al (OH) 3 Calcining and preparing the mixture; caSO used 4 ·2H 2 O is a commercially available analytically pure product;
2) Adding the ettringite, deionized water and a polycarboxylate water reducer in the step 1) into a wet mill according to the mass ratio of 1:1.6:0.02, then adding zirconia grinding bodies with the mass of 7 times of the ettringite and the grading of 2.4mm:1.4mm:0.8 mm=1:1:2, grinding for 100min at 365rpm under the protection of nitrogen, and filtering the grinding bodies to obtain nano ettringite slurry with the median particle diameter of 165nm, wherein the solid content of the polycarboxylate water reducer is 40% and the water reducing rate is 31%;
3) And (2) adding a thickening agent into the nano ettringite slurry in the step (2) according to the mass ratio of 4:0.4, and stirring uniformly to obtain the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete, wherein the thickening agent is a mixture of the temperature roller rubber and the alpha-sodium alkenyl sulfonate, and the mass ratio of the temperature roller rubber to the alpha-sodium alkenyl sulfonate is 1:6.
Example 4
This embodiment differs from embodiment 3 in that: in step 3) of this example, the mass ratio of nano ettringite slurry to thickener was 5:0.6, and the mass ratio of the hotplate gum to sodium alpha-alkenyl sulfonate was 3:6.
Example 5
This embodiment differs from embodiment 1 in that: the preparation method of the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete comprises the following steps:
1) C is C 3 A and CaSO 4 ·2H 2 O is uniformly mixed in a molar ratio of 1:3, a certain amount of deionized water is added, the mixture is uniformly stirred, and the mixture reacts for 5 to 7 days under the condition of nitrogen protection and room temperature to obtain ettringite, wherein C is used 3 A analytically pure Ca (OH) produced by the national drug group Co., ltd 2 And Al (OH) 3 Calcining and preparing the mixture; caSO used 4 ·2H 2 O is a commercially available analytically pure product;
2) Adding the ettringite, deionized water and a polycarboxylate water reducer in the step 1) into a wet mill according to the mass ratio of 1:1.4:0.02, then adding a zirconia grinding body with the mass of 5 times of the ettringite and the grading of 2.4mm:1.4mm:0.8 mm=1:1:2, grinding for 110min under the protection of nitrogen at 385rpm, and filtering the grinding body to obtain nano ettringite slurry with the median particle diameter of 220nm, wherein the solid content of the polycarboxylate water reducer is 40% and the water reducing rate is 31%;
3) And (2) adding a thickening agent into the nano ettringite slurry in the step (2) according to the mass ratio of 6:0.4, and stirring uniformly to obtain the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete, wherein the thickening agent is a mixture of the temperature roller rubber and the alpha-sodium alkenyl sulfonate, and the mass ratio of the temperature roller rubber to the alpha-sodium alkenyl sulfonate is 2:6.
Example 6
This embodiment differs from embodiment 5 in that: in step 3) of this example, the mass ratio of nano ettringite slurry to thickener was 7:0.7, and the mass ratio of the hotplate gum to sodium alpha-alkenyl sulfonate was 3:6.
Example 7
This embodiment differs from embodiment 1 in that: the preparation method of the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete comprises the following steps:
1) C is C 3 A and CaSO 4 ·2H 2 O is uniformly mixed in a molar ratio of 1:3, a certain amount of deionized water is added, the mixture is uniformly stirred, and the mixture reacts for 5 to 7 days under the condition of nitrogen protection and room temperature to obtain ettringite, wherein C is used 3 A analytically pure Ca (OH) produced by the national drug group Co., ltd 2 And Al (OH) 3 Calcining and preparing the mixture; caSO used 4 ·2H 2 O is a commercially available analytically pure product;
2) Adding the ettringite, deionized water and a polycarboxylate water reducer in the step 1) into a wet mill according to the mass ratio of 1:1.6:0.04, then adding a zirconia grinding body with the mass of 6 times of the ettringite and the grading of 2.4mm:1.4mm:0.8 mm=1:1:2, grinding for 120min at 400rpm under the protection of nitrogen, and filtering the grinding body to obtain nano ettringite slurry with the median particle diameter of 100nm, wherein the solid content of the polycarboxylate water reducer is 41 percent and the water reducing rate is 32 percent;
3) And (2) adding a thickening agent into the nano ettringite slurry in the step (2) according to the mass ratio of 8:0.5, and stirring uniformly to obtain the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete, wherein the thickening agent is a mixture of the temperature roller rubber and the alpha-sodium alkenyl sulfonate, and the mass ratio of the temperature roller rubber to the alpha-sodium alkenyl sulfonate is 1:6.
Example 8
This embodiment differs from embodiment 7 in that: in step 3) of this example, the mass ratio of nano ettringite slurry to thickener was 4:0.8, and the mass ratio of the hotplate gum to sodium alpha-alkenyl sulfonate was 2:6.
The foam stabilizing and carbonization resisting reinforcing agent for the all-solid-waste foam concrete of the embodiments 1-8 is used for preparing the all-solid-waste foam concrete, and specifically comprises the following steps:
1) Weighing the foam stabilizing and carbonization resisting reinforcing agents, animal protein foaming agents and water for the full solid waste foam concrete of the embodiments 1-8 according to the proportion of the raw materials in the table 1, and mixing to obtain foaming agent solutions;
2) Stirring the prepared foaming agent solution at a high speed to obtain a preformed foam, wherein the test result of the bleeding rate of the prepared foam for 1 hour is shown in table 1;
3) According to the weight parts, 148 parts of phosphogypsum, 385 parts of slag, 59 parts of steel slag, 207.2 parts of water and 1.8 parts of water reducer are uniformly mixed to prepare the full solid waste foam concrete net slurry ((ternary cementing material system consisting of slag, phosphogypsum and steel slag));
4) According to 800kg/m 3 Adding the prefabricated foam of the step 2) into the clean slurry of the all-solid waste foam concrete of the step 3), forming, removing the mould, curing to obtain the all-solid waste foam concrete, curing the all-solid waste foam concrete for 24 hours after forming, demolding, curing under standard conditions (20+/-1 ℃ and RH is more than or equal to 90%), and measuring the compressive strength according to the standard JG/T266-2011 foam concrete; the carbonization performance was measured by reference to the standard GB/T11969-2020 autoclaved aerated concrete Experimental method, and the test results are shown in Table 2.
As can be seen from the foam performance evaluation in Table 2, the compressive strength and carbonization depth data of the full solid waste foam concrete in Table 2, when the mixing amount of the foam stabilizing and carbonization resisting reinforcing agent is 2.8-8.8%, the bleeding rate of the foam for 1 hour is less than or equal to 10%, the compressive strength of the foam concrete for 7 days is improved by 30%, the compressive strength for 28 days is improved by 20%, and the carbonization coefficient is improved by 20%, which indicates that the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete not only contributes to the strength development of the full solid waste foam concrete, but also improves the carbonization resisting capability of the full solid waste foam concrete.
TABLE 1 blowing agent solution formulation and Pre-foam Performance evaluation
Table 2 compressive strength and depth of carbonization of all solid waste foam concrete
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The preparation method of the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete is characterized by comprising the following steps of:
1) C is C 3 A and CaSO 4 ·2H 2 O is uniformly mixed in a molar ratio of 1:3, and a certain amount of deionized water is added, and is uniformly stirred, and reacts for 5-7 days under the condition of nitrogen protection and room temperature to obtain ettringite;
2) Adding ettringite, deionized water and a polycarboxylate water reducer into a wet mill according to the mass ratio of 1:1.3-1.6:0.01-0.04, grinding for 90-120min under the protection of nitrogen at the rotating speed of 350-400rpm, and filtering the grinding body to obtain nano ettringite slurry;
3) And (3) adding a thickening agent into the nano ettringite slurry according to the mass ratio of (2-8) to (0.4-0.8), and stirring until the mixture is uniform to obtain the foam stabilizing and carbonization resisting reinforcing agent for the full solid waste foam concrete.
2. The method for preparing a foam stabilizing and carbonization-resistant reinforcing agent for fully solid waste foam concrete according to claim 1, wherein in the step 2), the grinding body is a zirconia grinding body, and the grading of the zirconia grinding body is 2.4mm:1.4mm:0.8 mm=1:1:2.
3. The method for preparing a foam stabilizing and carbonization-resistant reinforcing agent for wholly solid waste foam concrete according to claim 1, wherein the total mass of the abrasive body in step 2) is 5 to 7 times the mass of ettringite.
4. The method for preparing a foam stabilizing and carbonization-resisting reinforcing agent for fully solid waste foam concrete according to claim 1, wherein the solid content of the polycarboxylate water reducing agent in step 2) is 39-41%, and the water reducing rate is 30-32%.
5. The method for preparing a foam stabilizing and carbonization-resistant reinforcing agent for fully solid waste foam concrete according to claim 1, wherein the median particle size of nano ettringite in the nano ettringite slurry in step 2) is 100-250nm.
6. The method for preparing a foam stabilizing and carbonization-resisting reinforcing agent for fully solid waste foam concrete according to claim 1, wherein in the step 3), the thickening agent is a mixture of a temperature-roller rubber and alpha-sodium alkenyl sulfonate, and the mass ratio of the temperature-roller rubber to the alpha-sodium alkenyl sulfonate is (1-4) to 6.
7. The foam stabilizing and carbonization-resistant reinforcing agent for solid waste foam concrete according to any one of claims 1 to 6.
8. The application of the foam stabilizing and carbonization resisting reinforcing agent for the all-solid-waste foam concrete in the all-solid-waste foam concrete, which is disclosed in claim 7, is characterized in that the cementing material of the all-solid-waste foam concrete is a ternary cementing material system consisting of slag, phosphogypsum and steel slag, and the mixing amount of the foam stabilizing and carbonization resisting reinforcing agent for the all-solid-waste foam concrete is 2.8-8.8% of the mass of water used for preparing the foam for the all-solid-waste foam concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310598508.5A CN116675465A (en) | 2023-05-25 | 2023-05-25 | Foam stabilizing and carbonization resisting reinforcing agent for full solid waste foam concrete and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310598508.5A CN116675465A (en) | 2023-05-25 | 2023-05-25 | Foam stabilizing and carbonization resisting reinforcing agent for full solid waste foam concrete and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116675465A true CN116675465A (en) | 2023-09-01 |
Family
ID=87788241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310598508.5A Pending CN116675465A (en) | 2023-05-25 | 2023-05-25 | Foam stabilizing and carbonization resisting reinforcing agent for full solid waste foam concrete and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116675465A (en) |
-
2023
- 2023-05-25 CN CN202310598508.5A patent/CN116675465A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109369097B (en) | Low-shrinkage low-creep anti-cracking high-performance mass concrete | |
| WO2021012937A1 (en) | High-strength coral concrete and preparation method therefor | |
| CN108892450B (en) | Low-shrinkage high-strength concrete material mainly prepared from aeolian sand and gobi gravel and preparation method thereof | |
| CN103771817A (en) | Desulfurized gypsum foam concrete and preparation method thereof | |
| CN105541384A (en) | Ultralight foam concrete and preparing method thereof | |
| CN115073116B (en) | Grouting material containing steel slag solid waste base cementing material | |
| CN111620624B (en) | Self-compacting concrete and preparation method thereof | |
| CN113354342A (en) | Regenerated micropowder concrete and preparation method thereof | |
| CN108585925A (en) | A kind of self heat-preserving concrete building block | |
| CN110218055B (en) | Low-sulfur-content negative-temperature sleeve grouting material and preparation method thereof | |
| CN108328977B (en) | Concrete repairing material | |
| CN112919864A (en) | Recycled aggregate fiber reinforced shotcrete and preparation method thereof | |
| CN109665743B (en) | Marble stone powder-based concrete admixture capable of reducing water bleeding and preparation method thereof | |
| CN113636767A (en) | Low-carbon cement and preparation method thereof | |
| CN110981369A (en) | High-performance expansive prestressed concrete and preparation method thereof | |
| CN109095802B (en) | Expansive agent for concrete, concrete and preparation method thereof | |
| CN110577382B (en) | C25 super slump retaining concrete | |
| CN110451840B (en) | Composite type compacting agent | |
| CN114085055B (en) | Secondary lining concrete suitable for high-ground-temperature tunnel in high-temperature and low-humidity environment and preparation method thereof | |
| CN115849811A (en) | High-stability self-compacting concrete and preparation method thereof | |
| CN116102314A (en) | Concrete with red mud and limestone powder as auxiliary cementing materials and preparation method thereof | |
| CN116675465A (en) | Foam stabilizing and carbonization resisting reinforcing agent for full solid waste foam concrete and preparation method and application thereof | |
| CN115594469A (en) | Low-drying-shrinkage 3D printing concrete and preparation method thereof | |
| CN115490474A (en) | Nano-modified high-fluidity vitrified micro-bead thermal insulation mortar | |
| CN110885204B (en) | Anti-cracking reinforcing material for long-life concrete product and preparation method and application thereof |
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 |