CN114853430A - High-performance polymer mortar and preparation method thereof - Google Patents
High-performance polymer mortar and preparation method thereof Download PDFInfo
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- CN114853430A CN114853430A CN202210566774.5A CN202210566774A CN114853430A CN 114853430 A CN114853430 A CN 114853430A CN 202210566774 A CN202210566774 A CN 202210566774A CN 114853430 A CN114853430 A CN 114853430A
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 61
- 229920000642 polymer Polymers 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000004576 sand Substances 0.000 claims abstract description 30
- 239000000839 emulsion Substances 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 239000004568 cement Substances 0.000 claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- 239000003381 stabilizer Substances 0.000 claims abstract description 18
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 16
- 239000011325 microbead Substances 0.000 claims abstract description 14
- 230000008961 swelling Effects 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002174 Styrene-butadiene Substances 0.000 claims abstract description 4
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000011115 styrene butadiene Substances 0.000 claims abstract description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 4
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims abstract description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 10
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 8
- 229910001947 lithium oxide Inorganic materials 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- WPJGWJITSIEFRP-UHFFFAOYSA-N 1,3,5-triazine-2,4,6-triamine;hydrate Chemical compound O.NC1=NC(N)=NC(N)=N1 WPJGWJITSIEFRP-UHFFFAOYSA-N 0.000 claims description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 3
- 229910021538 borax Inorganic materials 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000011344 liquid material Substances 0.000 claims description 3
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 3
- 239000004328 sodium tetraborate Substances 0.000 claims description 3
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 2
- 239000004156 Azodicarbonamide Substances 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical group NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 2
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 235000010338 boric acid Nutrition 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 235000015165 citric acid Nutrition 0.000 claims description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 2
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 239000000176 sodium gluconate Substances 0.000 claims description 2
- 229940005574 sodium gluconate Drugs 0.000 claims description 2
- 235000012207 sodium gluconate Nutrition 0.000 claims description 2
- 239000008399 tap water Substances 0.000 claims description 2
- 235000020679 tap water Nutrition 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 claims description 2
- 239000013530 defoamer Substances 0.000 claims 2
- 238000005204 segregation Methods 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 238000003754 machining Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 229920000891 common polymer Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 101100386518 Caenorhabditis elegans dbl-1 gene Proteins 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- 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
-
- 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
Abstract
The invention discloses high-performance polymer mortar and a preparation method thereof, relating to the technical field of building materials, and the high-performance polymer mortar comprises the following raw materials in percentage by mass: special cement: 30-50 parts by mass; sand: 40-60 parts by mass; microbeads: 3-10 parts by mass; high-performance water reducing agent: 0.1-0.5 parts by mass; defoaming agent: 0.05-0.2 parts by mass; early strength agent: 0-0.15 parts by mass; retarder: 0-0.2 parts by mass; a stabilizer: 0.05-0.5 parts by mass; swelling agent: 0.1-0.5 parts by mass; polymer emulsion: 3-15 parts by mass; water: 12-20 parts by mass; the special cement is one or two of sulphoaluminate cement and high-alumina cement, and the sand is one or two of machine-made sand and river sand; the polymer emulsion is one or more of pure acrylic emulsion, styrene-acrylic emulsion and styrene-butadiene emulsion. The invention effectively solves the technical problems of low early strength, layered segregation under high fluidity, large mortar volume weight and easy shrinkage of the existing polymer mortar.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to high-performance polymer mortar and a preparation method thereof.
Background
With the increasing tunnel construction projects in the construction process of rail traffic such as high-speed railways, highways, subways and the like in China, higher requirements are placed on the construction period and later maintenance, cavities and gaps are easy to generate in the process of lifting the tunnel lining rear part and the rails, and timely filling and reinforcement are needed.
The polymer mortar is a novel material used in engineering in recent years, is prepared by mixing and stirring cement mortar and polymer emulsion, and has the flexibility and good adhesion of the polymer emulsion as well as the high strength and durability of the cement mortar. The polymer mortar can be suitable for repairing and reinforcing concrete structures and special parts of concrete engineering, such as areas with complicated stress, high requirements on crack resistance, impact resistance, fatigue resistance and the like, and in addition, the polymer mortar can also be used for areas with seepage prevention, leakage stoppage, reinforcement and the like of underground engineering.
At present, polymer mortar used can achieve high fluidity, but generally generates a layering segregation phenomenon, so that the strength of the mortar is reduced after hardening, and the volume shrinkage is serious. Meanwhile, for the existing line maintenance of rail traffic such as high-speed railways and the like, the setting time of the common polymer mortar is slow, the construction requirement of skylight operation cannot be met, and the volume weight of the common polymer mortar is generally 2000kg/m at present 3 The left and right sides are all larger than the volume weight of soil, and the load is locally increased on a tunnel lining and a soil foundation layer after hardening, so that the later durability of the engineering is influenced, and the maintenance workload is increased.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides high-performance polymer mortar and a preparation method thereof, which aim to solve the technical problems of low early strength, layered segregation under high fluidity, large mortar volume weight and easy shrinkage of the conventional polymer mortar.
The technical scheme adopted by the invention is as follows:
the invention discloses a high-performance polymer mortar and a preparation method thereof, wherein the high-performance polymer mortar comprises the following raw materials in percentage by mass: special cement: 30-50 parts by mass; sand: 40-60 parts by mass; microbeads: 3-10 parts by mass; high-performance water reducing agent: 0.1-0.5 parts by mass; defoaming agent: 0.05-0.2 parts by mass; early strength agent: 0-0.15 parts by mass; retarder: 0-0.2 parts by mass; a stabilizer: 0.05-0.5 parts by mass; swelling agent: 0.1-0.5 parts by mass; polymer emulsion: 3-15 parts by mass; water: 12-20 parts by mass; the special cement is one or two of sulphoaluminate cement and high-alumina cement, and the sand is one or two of machine-made sand and river sand; the polymer emulsion is one or more of pure acrylic emulsion, styrene-acrylic emulsion and styrene-butadiene emulsion.
Preferably, the micro-beads are one or more of expanded and vitrified micro-beads, fly ash floating beads and glass micro-beads.
Preferably, the high-performance water reducing agent is one or more of a polycarboxylic acid water reducing agent, a naphthalene water reducing agent and a melamine water reducing agent.
Preferably, the defoaming agent is a silicone-based defoaming agent.
Preferably, the early strength agent is one or more of lithium carbonate, lithium sulfate, lithium oxide and aluminum sulfate.
Preferably, the retarder is one or more of citric acid, tartaric acid, sodium gluconate, boric acid and borax.
Preferably, the stabilizer is a basf mortar stabilizer.
Preferably, the swelling agent is azodicarbonamide.
Preferably, the water is tap water.
The preparation method of the high-performance polymer mortar comprises the following steps:
step 1: weighing special cement, sand, micro-beads, a high-performance water reducing agent, a defoaming agent, an early strength agent, a retarder, a stabilizer and an expanding agent according to a proportion, and mechanically and uniformly mixing;
step 2: weighing the polymer emulsion and water according to a proportion, and mechanically and uniformly mixing;
and step 3: and (3) adding the powder mixed in the step (1) into the liquid material in the step (2), keeping the stirring speed not lower than 300rpm, and stirring for 3-5 minutes to obtain the high-performance polymer mortar.
In summary, compared with the prior art, the invention has the following advantages and beneficial effects:
the initial expansion of the high-performance polymer mortar provided by the invention can reach 320mm at most, and the volume weight of the mortar can reach 1600kg/m 3 About, the mortar separation degree is less than 1 part by mass, the initial setting time is more than 20 minutes, the final setting time is less than 60 minutes, and the 2-hour compressive strength is more than 10The expansion ratio of MPa and 1 day is more than 0.2 part by mass, no shrinkage exists in 28 days, the strength is not reduced, and the technical problems of low early strength, layered segregation under high fluidity, large volume weight of mortar and easy shrinkage of the existing polymer mortar are effectively solved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to various embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The high-performance polymer mortar of the embodiment comprises the following raw materials in proportion:
sulphoaluminate cement: 40 parts by mass
And (3) machining sand: 35 parts by mass
River sand: 15 parts by mass
Expanding and vitrifying the micro-beads: 5 parts by mass
Polycarboxylic acid water reducing agent: 0.2 part by mass
And (3) organic silicon defoaming agent: 0.1 part by mass
Lithium oxide: 0.05 part by mass
Citric acid: 0.1 part by mass
A stabilizer: 0.05 part by mass
Swelling agent: 0.2 part by mass
Pure acrylic emulsion: 5 parts by mass
Water: 13 parts by mass
The high-performance polymer mortar prepared according to the mixture ratio is numbered as follows: HPCM-1.
The preparation steps are as follows:
step 1: weighing special cement, sand, micro-beads, a high-performance water reducing agent, a defoaming agent, an early strength agent, a retarder, a stabilizer and an expanding agent according to a proportion, and mechanically and uniformly mixing;
step 2: weighing the polymer emulsion and water according to a proportion, and mechanically and uniformly mixing;
and step 3: and (3) adding the powder mixed in the step (1) into the liquid material in the step (2), keeping the stirring speed not lower than 300rpm, and stirring for 5 minutes.
Example 2
The high-performance polymer mortar of the embodiment comprises the following raw materials in proportion:
sulphoaluminate cement: 45 parts by mass
And (3) machining sand: 25 parts by mass
River sand: 15 parts by mass
Glass beads: 10 parts by mass
Naphthalene water reducing agent: 0.5 part by mass
And (3) organic silicon defoaming agent: 0.1 part by mass
Lithium oxide: 0.05 part by mass
Citric acid: 0.05 part by mass
A stabilizer: 0.05 part by mass
Swelling agent: 0.3 part by mass
Styrene-butadiene emulsion: 5 parts by mass
Water: 14 parts by mass
The high-performance polymer mortar prepared according to the mixture ratio is numbered as follows: HPCM-2, prepared in the same manner as in example 1.
Example 3
The high-performance polymer mortar of the embodiment comprises the following raw materials in proportion:
high-alumina cement: 45 parts by mass
And (3) machining sand: 25 parts by mass
River sand: 10 parts by mass
Expanded and vitrified small balls: 7.5 parts by mass
Melamine water reducing agent: 0.5 part by mass
And (3) organic silicon defoaming agent: 0.1 part by mass
Lithium oxide: 0.1 part by mass
Citric acid: 0.05 part by mass
A stabilizer: 0.1 part by mass
Swelling agent: 0.5 part by mass
Styrene-acrylic emulsion: 12.5 parts by mass
Water: 15 parts by mass
The high-performance polymer mortar prepared according to the mixture ratio is numbered as follows: HPCM-3, prepared in the same manner as in example 1.
Example 4
The high-performance polymer mortar of the embodiment comprises the following raw materials in proportion:
high-alumina cement: 50 parts by mass
And (3) machining sand: 25 parts by mass
River sand: 15 parts by mass
Fly ash floating bead: 10 parts by mass
Polycarboxylic acid water reducing agent: 0.5 part by mass
And (3) organic silicon defoaming agent: 0.1 part by mass
Aluminum sulfate: 0.05 part by mass
Borax: 0.04 parts by mass
A stabilizer: 0.05 part by mass
Swelling agent: 0.3 part by mass
Pure acrylic emulsion: 5 parts by mass
Water: 16 parts by mass
The high-performance polymer mortar prepared according to the mixture ratio is numbered as follows: HPCM-4, prepared in the same manner as in example 1.
Comparative example 1
The raw material ratio of the high-performance polymer mortar of the comparative example is as follows:
sulphoaluminate cement: 40 parts by mass
And (3) machining sand: 35 parts by mass
River sand: 15 parts by mass
Expanding and vitrifying the micro-beads: 5 parts by mass of
Polycarboxylic acid water reducing agent: 0.2 part by mass
And (3) organic silicon defoaming agent: 0.1 part by mass
Lithium oxide: 0.05 part by mass
Citric acid: 0.1 part by mass
A stabilizer: 0.05 part by mass
Swelling agent: 0.2 part by mass
Water: 18 parts by mass
The high-performance polymer mortar prepared according to the mixture ratio is numbered as follows: DBL-1, prepared in the same manner as in example 1.
Comparative example 2
The raw material ratio of the high-performance polymer mortar of the comparative example is as follows:
commercial portland cement: 40 parts by mass
And (3) machining sand: 35 parts by mass
River sand: 15 parts by mass
Expanding and vitrifying the micro-beads: 5 parts by mass
Polycarboxylic acid water reducing agent: 0.2 part by mass
And (3) organic silicon defoaming agent: 0.1 part by mass
Lithium oxide: 0.05 part by mass
Citric acid: 0.1 part by mass
A stabilizer: 0.05 part by mass
Swelling agent: 0.2 part by mass
Pure acrylic emulsion: 5 parts by mass
Water: 13 parts by mass
The high-performance polymer mortar prepared according to the mixture ratio is numbered as follows: DBL-2.
Comparative example 3
The raw material ratio of the high-performance polymer mortar of the comparative example is as follows:
commercial portland cement: 40 parts by mass
And (3) machining sand: 35 parts by mass
River sand: 15 parts by mass
Expanding and vitrifying the micro-beads: 5 parts by mass
Polycarboxylic acid water reducing agent: 0.2 part by mass
And (3) organic silicon defoaming agent: 0.1 part by mass
Lithium oxide: 0.05 part by mass
Citric acid: 0.1 part by mass
A stabilizer: 0.05 part by mass
Swelling agent: 0.2 part by mass
Pure acrylic emulsion: 5 parts by mass
Water: 13 parts by mass
The high-performance polymer mortar prepared according to the mixture ratio is numbered as follows: DBL-3.
The preparation steps are as follows:
weighing special cement, sand, micro-beads, a high-performance water reducing agent, a defoaming agent, an early strength agent, a retarder, a stabilizer, an expanding agent, polymer emulsion and water according to a proportion, and mechanically and uniformly mixing; stirring was carried out for 2 minutes while keeping the stirring speed at 300rpm or higher.
The following table shows experimental data of the high-performance polymer mortar prepared by the invention and 2 commercially available common polymer mortars:
as can be seen from the above table, after the comparative example DBL-1 lacks the acrylic emulsion, the setting time is shortened, the working time of the polymer mortar is shortened, the phenomena of pipe blockage and incompact pouring of the mortar are possibly caused in the pouring process of the mortar, the volume weight of the mortar is increased, and the bonding strength is obviously reduced; compared example DBL-2 uses ordinary cement to replace special cement, the setting time is greatly prolonged, the cement can not be set within 2 hours, and the requirements of rapid repair of rail transit and driving influence can not be met; in the comparative example DBL-3, functional small materials cannot fully play a role by changing the feeding process and the stirring time, so that all indexes slide down. The embodiment HPMC1-4 shows that the high-performance polymer mortar prepared by the invention has good stability under high fluidity, high early strength, strength of more than 10MPa in 2 hours, high early expansion rate and remarkably reduced volume weight compared with the common polymer mortar.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (10)
1. The high-performance polymer mortar is characterized by comprising the following raw materials in parts by mass: special cement: 30-50 parts by mass; sand: 40-60 parts by mass; microbeads: 3-10 parts by mass; high-performance water reducing agent: 0.1-0.5 parts by mass; defoaming agent: 0.05-0.2 parts by mass; early strength agent: 0 to 0.15 mass portion; retarder: 0-0.2 parts by mass; a stabilizer: 0.05-0.5 parts by mass; swelling agent: 0.1-0.5 parts by mass; polymer emulsion: 3-15 parts by mass; water: 12-20 parts by mass; the special cement is one or two of sulphoaluminate cement and high-alumina cement, and the sand is one or two of machine-made sand and river sand; the polymer emulsion is one or more of pure acrylic emulsion, styrene-acrylic emulsion and styrene-butadiene emulsion.
2. The high performance polymer mortar of claim 1, wherein the beads are one or more of expanded and vitrified beads, fly ash floating beads, and glass beads.
3. The high-performance polymer mortar of claim 1, wherein the high-performance water reducing agent is one or more of a polycarboxylic acid water reducing agent, a naphthalene water reducing agent, and a melamine water reducing agent.
4. The high performance polymer mortar of claim 1, wherein the defoamer is a silicone defoamer.
5. The high performance polymer mortar of claim 1, wherein the early strength agent is one or more of lithium carbonate, lithium sulfate, lithium oxide, and aluminum sulfate.
6. The high performance polymer mortar of claim 1, wherein the retarder is one or more of citric acid, tartaric acid, sodium gluconate, boric acid, and borax.
7. The high performance polymer mortar of claim 1, wherein the stabilizer is a basf mortar stabilizer.
8. The high performance polymer mortar of claim 1, wherein the expanding agent is azodicarbonamide.
9. The high performance polymer mortar of claim 1, wherein the water is tap water.
10. The method for preparing the high-performance polymer mortar according to any one of claims 1 to 9, comprising the following steps:
step 1: weighing special cement, sand, micro-beads, a high-performance water reducing agent, a defoaming agent, an early strength agent, a retarder, a stabilizer and an expanding agent according to a proportion, and mechanically and uniformly mixing;
step 2: weighing the polymer emulsion and water according to a proportion, and mechanically and uniformly mixing;
and step 3: and (3) adding the powder mixed in the step (1) into the liquid material in the step (2), keeping the stirring speed not lower than 300rpm, and stirring for 3-5 minutes to obtain the high-performance polymer mortar.
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| CN202210566774.5A CN114853430A (en) | 2022-05-23 | 2022-05-23 | High-performance polymer mortar and preparation method thereof |
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| CN202210566774.5A Pending CN114853430A (en) | 2022-05-23 | 2022-05-23 | High-performance polymer mortar and preparation method thereof |
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| CN111943609A (en) * | 2020-07-27 | 2020-11-17 | 中铁四院集团工程建设有限责任公司 | Mortar for tunnel corrugated plate reinforced structure |
| CN114133206A (en) * | 2021-10-09 | 2022-03-04 | 中铁十六局集团路桥工程有限公司 | High-performance vitrified micro bubble thermal insulation mortar and preparation method thereof |
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| CN108793867A (en) * | 2018-06-12 | 2018-11-13 | 山东农业大学 | A kind of polymer-modified mortar and preparation method for wall earthquake-proof energy-saving integration transformation |
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| CN111533517A (en) * | 2020-04-27 | 2020-08-14 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Rapid repair mortar for high-speed railway concrete track slab and preparation method thereof |
| CN111943609A (en) * | 2020-07-27 | 2020-11-17 | 中铁四院集团工程建设有限责任公司 | Mortar for tunnel corrugated plate reinforced structure |
| CN114133206A (en) * | 2021-10-09 | 2022-03-04 | 中铁十六局集团路桥工程有限公司 | High-performance vitrified micro bubble thermal insulation mortar and preparation method thereof |
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Application publication date: 20220805 |