CN116239327A - Mortar waterproof adhesive, preparation method and use method - Google Patents
Mortar waterproof adhesive, preparation method and use method Download PDFInfo
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- CN116239327A CN116239327A CN202310332670.2A CN202310332670A CN116239327A CN 116239327 A CN116239327 A CN 116239327A CN 202310332670 A CN202310332670 A CN 202310332670A CN 116239327 A CN116239327 A CN 116239327A
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- 239000000853 adhesive Substances 0.000 title claims abstract description 90
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229920001184 polypeptide Polymers 0.000 claims abstract description 38
- 102000004196 processed proteins & peptides Human genes 0.000 claims abstract description 38
- 108090000765 processed proteins & peptides Proteins 0.000 claims abstract description 38
- 125000002811 oleoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims abstract description 29
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 25
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 22
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 13
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 13
- 239000004568 cement Substances 0.000 claims description 63
- 238000003756 stirring Methods 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 18
- 239000004576 sand Substances 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 10
- 239000000378 calcium silicate Substances 0.000 claims description 5
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 5
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 5
- 239000005871 repellent Substances 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 4
- 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 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 3
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 19
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 43
- 238000010276 construction Methods 0.000 description 13
- 239000012790 adhesive layer Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 8
- 239000003513 alkali Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000011083 cement mortar Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
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- 238000006703 hydration reaction Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000536 complexating effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
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- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000013022 formulation composition Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- -1 hydroxide ions Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
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- 238000006068 polycondensation reaction Methods 0.000 description 1
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- 238000005086 pumping Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
-
- 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
- C04B28/04—Portland 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides a mortar waterproof adhesive, a preparation method and a use method thereof, wherein the mortar waterproof adhesive comprises the following components: 10-15% of sodium dodecyl benzene sulfonate; 11-20% of oleoyl polypeptide complex; 16-25% of silicate; 10-18% of calcium hydroxide; 22-53% of water. The mortar waterproof adhesive disclosed by the invention well adheres the mortar layer and the concrete layer closely, plays a role in blocking water, realizes the self-waterproof effect of the rigid additional layer and the concrete structure, effectively solves the later water leakage phenomenon of a building, and achieves a long-acting waterproof effect.
Description
Technical Field
The invention relates to the field of buildings, in particular to a mortar waterproof adhesive, a preparation method and a use method thereof.
Background
At present, leakage is a second major problem affecting building quality except building structures in China, and is a major problem puzzling the building industry and families, the average leakage rate of a house in the country is basically kept at about 65%, and the leakage rate of an underground building is more than 80%.
Rigid waterproofing has been in existence since the country of construction, but has been gradually replaced by flexible waterproofing methods since the problems of waterproofing leakage and the like have not been thoroughly solved by the process bottleneck in the early years. In recent years, with the popularization of new technology and new material application, the rigid waterproof technology is greatly improved, and meanwhile, the problem of water leakage cannot be thoroughly solved in underground waterproof engineering due to flexible waterproof, so that the rigid waterproof technology is gradually accepted by the market due to low cost, short construction period and good effect.
The rigid-flexible combined waterproof technology applied at present is to apply a flexible waterproof layer outside the structure so as to make up the waterproof defect of the structural concrete. However, in construction, quality problems such as honeycomb dog holes, cold joints and the like generated by rigid concrete are often ignored, and the flexible waterproof layer outside the structure is easy to generate the problems such as water channeling and the like, so that the later water leakage phenomenon of the building occurs.
Disclosure of Invention
In order to solve the problems, the invention provides the mortar waterproof adhesive, the preparation method and the use method, which are used for well closely adhering the mortar layer and the concrete layer, simultaneously playing a role in blocking water, realizing the self-waterproof effect of the rigid additional layer and the concrete structure, effectively solving the later water leakage phenomenon of the building and achieving the long-acting waterproof effect.
The invention provides a mortar waterproof adhesive, which comprises the following components in percentage by weight: 10-15% of sodium dodecyl benzene sulfonate; 11-20% of oleoyl polypeptide complex; 16-25% of silicate; 10-18% of calcium hydroxide; 22-53% of water.
Further, the waterproof adhesive contains the following components in percentage by weight: 12-14% of sodium dodecyl benzene sulfonate; 14-18% of oleoyl polypeptide complex; 18-22% of silicate; 12-14% of calcium hydroxide; 32-44% of water.
Further, the weight ratio of sodium dodecylbenzenesulfonate to oleoyl polypeptide complex=1, (1.1-2).
Further, the oleoyl polypeptide complex is one or a combination of more than one of N-oleoyl polypeptide, N-oleoyl polypeptide sodium polycondensation amino acid and N-alkanoyl polypeptide; the silicate is one or more of sodium silicate, lithium silicate, aluminum silicate and calcium silicate.
In a second aspect of the present invention, there is provided a method for preparing a mortar waterproof adhesive, comprising the steps of: adding sodium dodecyl benzene sulfonate into water, stirring and dissolving to form a dissolving solution; adding the oleoyl polypeptide complex into the solution, and uniformly stirring to form a primary solvent; adding calcium hydroxide into the primary solution, and stirring to form an intermediate solvent; adding silicate into medium-grade solvent, stirring uniformly to form the water-proof adhesive.
In a third aspect of the invention, a using method of a mortar waterproof adhesive is provided, the waterproof adhesive is added into cement slurry under stirring, and after stirring for 3-5min, the mortar waterproof adhesive is smeared between a mortar layer and a concrete layer for use.
Further, the cement slurry is formed by stirring cement and water, wherein the mass ratio of the cement to the water is 1: (0.3-0.5)
Further, the water-proof adhesive is used in an amount of 0.1-0.35% by weight of cement in the cement slurry.
Further, the mortar layer comprises 20-30wt% of cement, 40-60wt% of sand and 10-40wt% of water.
Further, the concrete layer comprises 8-12wt% of cement, 65-77wt% of sand stone, 0.1-0.5wt% of water reducer, 2-5wt% of fly ash, 1-3wt% of slag powder and 5-15.9wt% of water.
The invention adopts silicate, sodium dodecyl benzene sulfonate and oleoyl polypeptide complex to interact under the environment of calcium hydroxide, and introduces-COO - 、-COONa、-SO 3 High-efficiency chelating Ca in cement with Na and other structures 2+ 、Al 3+ Plasma, so as to form a stable compact waterproof layer and achieve the seepage-proofing effect; meanwhile, the contained components can react with cement components in the mortar layer and the concrete layer, so that the problems of poor compatibility and easy layering and fracture between the organic polymer and the inorganic cement are solved, a good bonding effect is achieved, and the water leakage problem of the concrete building is thoroughly solved.
It should be understood that the description in this summary is not intended to limit the critical or essential features of the embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
The above and other features, advantages and aspects of embodiments of the present invention will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:
FIG. 1 is a view showing the preparation process of this example;
fig. 2 is a schematic view of the waterproof structure of the basement of the present embodiment.
Wherein, the correspondence between the reference numerals and the component names in fig. 1-2 is:
1 foundation pit excavation edge, 2 backfill raw soil, 3 bottom plate concrete, 4 bottom plate mortar, 5 side wall concrete, 6 side wall mortar, 7 top plate concrete and 8 top plate mortar.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
The invention provides a mortar waterproof adhesive, which comprises the following components in percentage by weight: 10-15% of sodium dodecyl benzene sulfonate; 11-20% of oleoyl polypeptide complex; 16-25% of silicate; 10-18% of calcium hydroxide; 22-53% of water.
In other embodiments, the waterproofing adhesive contains the following components in weight percent: 12-14% of sodium dodecyl benzene sulfonate; 14-18% of oleoyl polypeptide complex; 18-22% of silicate; 12-14% of calcium hydroxide; 32-44% of water. The overall performance of the product can be improved by the optimized formula.
In other embodiments, the weight ratio of sodium dodecyl benzene sulfonate to oleoyl polypeptide complex=1 (1.1-2). The structure and the form of the compound in the waterproof adhesive can be effectively controlled by controlling the proportion of the sodium dodecyl benzene sulfonate and the oleoyl polypeptide compound, the compound is in a free state under alkaline conditions, the accumulation of internal sediment can be effectively prevented, the aggregate components such as the sediment are uniformly distributed, the agglomeration in the sediment is effectively prevented, and the final waterproof property is poor and the adhesive force is weakened.
In other embodiments, it is preferred that the oleoyl polypeptide complex comprises a combination of one or more selected from the group consisting of N-oleoyl polypeptides, sodium N-oleoyl polypeptides, and N-alkanoyl polypeptides. Specifically, the general chemical structural formula of oleoyl polypeptide complex is as follows:
in other embodiments, the silicate comprises a combination of one or more selected from sodium silicate, lithium silicate, aluminum silicate, calcium silicate.
The waterproof adhesive composed of the components is a stable suspension solution, is an organic water repellent, is a low-alkali high-performance green novel cement additive, is properly doped into cement slurry to generate hydrophobic gel and sticky matters, forms an adhesive waterproof layer on the windward side of concrete, can well adhere the concrete layer to a mortar layer, and simultaneously enhances the overall anti-cracking performance and anti-seepage performance and increases the overall waterproof performance.
In a second aspect of the present invention, as shown in fig. 1, there is provided a method for preparing a mortar waterproof adhesive, comprising the steps of:
s1: adding sodium dodecyl benzene sulfonate into water, stirring and dissolving to form a dissolving solution;
s2: adding the oleoyl polypeptide complex into the solution, and uniformly stirring to form a primary solvent;
s3: adding calcium hydroxide into a primary solvent, and stirring to form an intermediate solvent;
s4: adding silicate into medium-grade solvent, stirring uniformly to form the water-proof adhesive.
In this embodiment, the addition of calcium hydroxide helps to stabilize the inside of the waterproof adhesive, the powdered sodium dodecyl benzene sulfonate is dissolved by water, the viscous oleoyl polypeptide complex is diluted to form a stable primary solvent with sodium dodecyl benzene sulfonate, at this time, the calcium hydroxide is added to make the solvent in a strong alkaline environment, the oleoyl polypeptide complex is complexed with sodium dodecyl benzene sulfonate to form a complex, at this time, silicate is added to react with hydroxyl to form a certain amount of calcium silicate particles, and the calcium silicate is uniformly distributed in the complex environment to form a stable waterproof adhesive. The silicate reacts with hydroxide to neutralize alkali, so that the whole system is alkalescent, and after the silicate is applied to cement slurry, the silicate has better compatibility with the alkaline environment of cement, and uniform chemical reaction, thereby achieving uniform seepage prevention and densification.
Wherein the chemical structural formula of the complex is as follows:
according to a third aspect of the invention, a using method of a mortar waterproof adhesive is provided, the waterproof adhesive is added into cement slurry in stirring, and after stirring for 3-5min, the mortar waterproof adhesive is smeared between a mortar layer and a concrete layer for use. Wherein, cement slurry is formed by stirring cement and water, and the mass ratio of cement to water is 1: (0.3-0.5). The water-proof adhesive is used in an amount of 0.1-0.35% by weight of cement in the cement slurry. Because the waterproof adhesive is a suspension, a certain amount of sediment can be formed after the waterproof adhesive is placed for a certain period of time, and the waterproof adhesive is added into mortar after being uniformly shaken when the waterproof adhesive is used.
In the use of the waterproof adhesive, the addition amount of the waterproof adhesive is determined according to the total amount of cement in the cement paste, namely, the total amount of cementing material in the cement paste, and the cementing material can bond the particulate or massive materials into an integral material in the process of changing the plastic paste into a hard stone by the physical and chemical actions of the cementing material. The specific addition amount of the waterproof adhesive can be 0.15wt%, 0.17wt%, 0.2wt%, 0.23wt%, 0.25wt%, 0.3wt% or 0.35wt% of the cement, and the specific addition amount is determined according to design requirements.
The mortar waterproof adhesive is used for performing waterproof bonding between a concrete layer and a mortar layer, cement slurry added with the mortar waterproof adhesive is used on the windward side of the mortar waterproof adhesive after concrete construction, surface coating is performed, the mortar waterproof adhesive is better combined with the mortar layer through the use of the mortar waterproof adhesive, and on the basis of meeting the waterproof performance, the mortar waterproof adhesive can also perform chemical reaction with the combined surface of the concrete layer and the mortar layer, so that the chemical and physical dual combination of the mortar layer and the concrete surface is realized, and the waterproof and seepage-proof performance of the concrete is better assisted.
In this embodiment, the mortar layer includes 20 to 30wt% cement, 40 to 60wt% sand, and 10 to 40wt% water. The concrete layer comprises 8-12wt% of cement, 65-77wt% of sand stone, 0.1-0.5wt% of water reducer, 2-5wt% of fly ash, 1-3wt% of slag powder and 5-15.9wt% of water. The mortar and the concrete with the proportion are bonded by adopting the waterproof adhesive, so that better bonding effect can be achieved, a waterproof layer can be formed in the middle of the mortar and the concrete, and the waterproof and seepage-proofing effects of the whole structure are improved.
In this embodiment, the cement is preferably Portland cement or Portland cement with a strength grade of not less than 32.5MPa, and the use of overdue or wet agglomerated cements is strictly prohibited, and cements with different brands or strength grades must not be mixed; the sand used in the mortar layer is preferably medium sand, the mud content is not more than 1%, and the sulfide and sulfate content is not more than 1%; the sand stone used for concrete is composed of medium sand and stones, wherein the mud content of the medium sand is not more than 3.0%, the mud content of the medium sand is not more than 1.0%, and sea sand is not suitable to be used; the maximum particle size of the stones is not more than 40mm, the maximum particle size of the stones is 1/4 of the pipe diameter of the conveying pipe during pumping, the mud content is not more than 1.0%, the mud block content is not more than 0.5%, and the water absorption rate is not more than 1.5%; other requirements of the sand stone are in accordance with the specification of JGJ52-2006 of the standard of sand and stone quality and inspection method for common concrete; water should meet the specification of "Water for concrete Standard" JGJ 63-2006.
In this embodiment, the water reducing agent is selected from one or a combination of more of lignin sulfonate type water reducing agents, naphthalene type water reducing agents, melamine type water reducing agents, sulfamate type water reducing agents, fatty acid type high water reducing agents, polycarboxylate type water reducing agents.
The invention adopts simple components to prepare mortar waterproof adhesive to solve the waterproof adhesive problem between a concrete layer and a mortar layer, and the concrete principle is as follows:
when the concrete construction is carried out, the internal hydration reaction process can generate holes such as honeycomb dog holes, cold joints and the like, so silicate can be used for filling the internal gaps, specifically, the silicate reaches the holes along with water and reacts with hydration products of cement to generate gel containing silicate groups, and the gel is used as aggregate components to fill and block the holes in the concrete in the growth process, so that the communication of capillary channels is cut off, the internal porosity of the concrete is reduced, and the compactness and the impermeability are improved. However, when silicate is used to enhance the strength of concrete, hydroxide ions are generated inside, which penetrate along with water to the surface of the matrix and diffuse into the air in water, and tiny alkali particles are formed after the water on the surface of the matrix evaporates, and the alkali particles are white and appear as alkali return, so that the alkali-aggregate reaction of the cement-based material is destroyed. For this phenomenon, generally, waterproof mortar is applied to the outside of concrete, but the mortar has large granularity and poor adhesion, so that cement paste is applied to block the inside of concrete to prevent contact with outside air, but the cement paste has limited adhesion and waterproof property, and is liable to lose protection in alkaline environment. The cement slurry added with the mortar waterproof adhesive is coated on the outer side of the concrete, a good waterproof adhesive layer is formed between the concrete and the mortar, the contact between the internal reaction of the concrete and outside air is blocked, the entry of carbon dioxide in the air is prevented, the service life of the concrete is prolonged, and the anti-seepage water property of the concrete is improved.
Specifically, the waterproof bonding layer is permeated into the concrete layer and the mortar layer, reacts with substances in the concrete layer and the mortar layer respectively, and realizes bonding effect through chemical reaction. Complexing the oleoyl polypeptide compound in the mortar waterproof adhesive with sodium dodecyl benzene sulfonate under alkaline condition to form a compound, neutralizing alkali generated by hydration of cement on the contact surface with concrete or mortar, and realizing alkali removal effect through chemical reaction to obtain chemical combination to play a role of adhesion; the oleoyl polypeptide compound is used as an auxiliary surfactant, which is favorable for the extension of surfactant molecules, obviously reduces the interaction between the surfactant molecules and improves the permeation effect of the waterproof adhesive; the oleoyl polypeptide compound serving as an auxiliary surfactant has the characteristics of foamability, dispersion suspension property, adsorptivity and the like, is used for improving the uniformity of the waterproof adhesive, preventing the waterproof adhesive from precipitating, is favorable for the stability of the performance and is convenient to directly use. Preferably, the oleoyl polypeptide complex is added at a temperature of 20-30℃ with optimal results. This is due to: the temperature is too high, bubbles generated by the reaction of the oleoyl polypeptide compound are too fast and too much, the compactness of the waterproof adhesive layer is affected, the temperature is too low, the bubbles are generated too slowly or too little, waterproof cracks are easily generated, and the waterproof effect cannot be achieved.
On the one hand, the sodium dodecyl benzene sulfonate is used as a surfactant, so that the electrostatic attraction in the mortar or concrete can be destroyed, the workability is improved, the waterproof adhesive enters the mortar or concrete, the cement components react, and the adhesive effect is achieved through chemical reaction; meanwhile, the sodium dodecyl benzene sulfonate has strong penetrability in water and can be matched with Ca in cement paste 2+ Complexing to form a complex when the complex is covered by SiO 3 2- Such substitution, creating crystals or precipitates that plug the capillary passages within the mortar or concrete, thereby increasing the overall barrier and mechanical properties; and the sodium dodecyl benzene sulfonate is not consumed, so that the long-acting waterproof adhesive property is greatly improved;
the waterproof adhesive solves the problem that a concrete layer and a mortar layer are easy to break in a layering way through the use of the waterproof adhesive, and plays a good role in adhesion; meanwhile, a compact waterproof layer is formed in the waterproof adhesive and matched with the concrete self-waterproof structure, so that the problem of water leakage is thoroughly solved; by using the cement paste containing the waterproof adhesive in the traditional construction, the construction procedures are reduced, and the cost is reduced.
Specific performance test:
performance tests were performed according to the Standard Hydraulic concrete test procedure DL/T5150-2001 and the Standard mortar, concrete waterproofing agent JC 474-1999.
The waterproof adhesive is prepared by adopting the formula and the preparation method of the waterproof adhesive, and the specific composition is shown in Table 2. And a waterproof adhesive was added to the cement paste, wherein the composition and performance data of the cement paste are shown in table 1.
Table 1 test data and performance test data for cement slurries
The cement paste was added with a waterproof adhesive in an amount of 0.2wt% to prepare a cement adhesive layer having a waterproof adhesive effect, the cement paste to which the waterproof adhesive was not added and to which the waterproof adhesive was added was subjected to standard curing for 3 days, respectively, and then was dried, the strength at 28 th day was measured, the water permeation pressure ratio and the water absorption ratio at 60 th day (48 h) were measured, and specific performance test data are shown in tables 2 and 3.
Table 2 composition test data and waterproof data of waterproof adhesives of examples
Table 3 composition test data and waterproof data of the waterproof adhesives of each comparative example
From the test data of the waterproof adhesive and the waterproof adhesive layer performance of each proportion in table 2, it can be seen that: the cement paste added with the waterproof adhesive and the cement paste without the waterproof adhesive have great difference in performance, the waterproof adhesive layer has higher waterproof performance and mechanical performance, and the optimal proportion is selected from the four groups of data by considering the overall performance data to be examples 5-6, so that the comprehensive performance of the cement paste added with the waterproof adhesive is best.
As can be seen from comparative examples 1 and 2 in Table 3, even though the components were within the values, the sodium dodecylbenzenesulfonate and oleoyl polypeptide complex was used in an amount exceeding the prescribed 1: in the range of (1.1-2), the performance is significantly reduced, and it is seen that if excessive sodium dodecyl benzene sulfonate or oleoyl polypeptide complex exists in the reaction process, the water-proof effect is not achieved, and the sodium dodecyl benzene sulfonate or oleoyl polypeptide complex is taken as an active agent component to damage the internal structure of mortar, so that the better water-proof effect is not achieved.
As can be seen from comparative examples 3 to 8, the compositions are outside the range of values, and the comprehensive waterproof performance of the composition also does not meet the requirements, and has a great gap from the waterproof adhesive in the range of values of the formula to be protected by the invention.
Specifically, the strength of the cement paste doped with the waterproof adhesive is remarkably improved compared with that of the cement paste not doped with the waterproof adhesive; therefore, the combination of the concrete and the mortar is effectively combined by adopting the waterproof adhesive layer added with the waterproof adhesive, so that the mechanical property is improved to a great extent. The cement slurry doped with the waterproof adhesive has high water permeability and small water absorption, and can better achieve the waterproof and seepage-proof effects.
To determine the optimum addition amount of the waterproof adhesive, a performance test was designed, the formulation composition of the waterproof adhesive of the above-described best example 6 was selected, and the mass percentages of 0.16wt%, 0.19wt%, 0.2wt%, 0.24wt% and 0.3wt% were respectively selected to be added to cement slurries of the same mass, and specific test data are shown in table 4.
TABLE 4 Property data of cement slurries without and with Water-repellent binders of different mass ratios
It can be seen that the addition of the waterproof adhesive increases the strength of the waterproof adhesive layer, increases the water permeability pressure ratio, and reduces the water absorption; the addition amount of the waterproof adhesive directly influences the comprehensive performance, and the larger the addition amount is, the better the performance is, and the addition amount of 0.2 weight percent is most suitable in consideration of the requirement of economic benefit.
The waterproof adhesive is used for the waterproof of the building underground and roof, such as basement ground, retaining wall upstream surface, garage roof and other parts; the waterproof construction method is also used for waterproof construction of the back surface of the building, and is very popular in waterproof maintenance engineering of the old building. Specifically, as shown in fig. 2, the waterproof adhesive layers can be adopted on the bottom plate, the side wall and the top plate of the underground structure to increase the waterproof performance, and meanwhile, the overall mechanical properties of the concrete layer and the mortar layer are increased.
Specifically, excavating a base, and coating a waterproof adhesive layer with the thickness of 20mm between the bottom plate concrete 3 with the thickness of 200mm and the bottom plate mortar 4 with the thickness of 80 mm; a waterproof adhesive layer with the thickness of 15mm is coated between the side wall concrete 5 with the thickness of 170mm and the side wall mortar 6 with the thickness of 20 mm; a waterproof adhesive layer with the thickness of 15mm is coated between the top plate concrete 7 with the thickness of 80mm and the top plate mortar 8 with the thickness of 20 mm; and finally, backfilling original soil 2 between the side wall and the excavation edge 1 of the foundation pit to finish the construction operation of the underground structure. Therefore, compared with the same underground structure without the waterproof adhesive layer, the waterproof service life and the mechanical strength of the underground structure are greatly improved, and the seepage prevention effect is truly realized. Meanwhile, the construction process is simple and easy to control, and on the basis of not increasing the thickness of the concrete, a good seepage prevention effect is realized, and the effects of reducing the cost and enhancing the efficiency are achieved.
Meanwhile, the cement mortar added with the waterproof adhesive is used between the mortar layers, the adhesive effect of the cement mortar is used for increasing the strength of the whole result, the waterproof property of the cement mortar is matched with the self waterproof structure of the mortar layers and the concrete, and compared with the cement mortar without the waterproof adhesive or the structure without the waterproof adhesive, the cement mortar has better strength and waterproof and seepage-proofing properties, the water channeling problem between the concrete layers and the mortar layers is effectively avoided, the construction process is simplified, the construction period is shortened, and the waterproof service life is prolonged.
The preferred embodiments of the present invention have been described above, and it should be understood that the preferred embodiments described herein are presented by way of illustration and explanation only, and not limitation.
In the description of the present invention, the terms "connected," "mounted," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In the description of the present specification, the terms "in the foregoing embodiments," "in some embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The mortar waterproof adhesive is characterized by comprising the following components in percentage by weight:
10-15% of sodium dodecyl benzene sulfonate; 11-20% of oleoyl polypeptide complex; 16-25% of silicate; 10-18% of calcium hydroxide; 22-53% of water.
2. A water-repellent adhesive according to claim 1, wherein,
the waterproof adhesive comprises the following components in percentage by weight: 12-14% of sodium dodecyl benzene sulfonate; 14-18% of oleoyl polypeptide complex; 18-22% of silicate; 12-14% of calcium hydroxide; 32-44% of water.
3. A water-repellent adhesive according to claim 1, wherein,
sodium dodecyl benzene sulfonate to oleoyl polypeptide complex weight ratio = 1 (1.1-2).
4. A water-repellent adhesive according to claim 1, wherein,
the oleoyl polypeptide complex is one or a combination of more of N-oleoyl polypeptide, N-oleoyl polypeptide sodium polycondensate and N-alkanoyl polypeptide;
the silicate is one or a combination of sodium silicate, lithium silicate, aluminum silicate and calcium silicate.
5. The preparation method of the mortar waterproof adhesive is characterized by comprising the following steps of:
adding sodium dodecyl benzene sulfonate into water, stirring and dissolving to form a dissolving solution;
adding the oleoyl polypeptide complex into the solution, and uniformly stirring to form a primary solvent;
adding calcium hydroxide into the primary solution, and stirring to form an intermediate solvent;
adding silicate into the medium-grade solvent, and uniformly stirring to form the waterproof adhesive.
6. A method for using mortar waterproof adhesive is characterized in that,
and adding the waterproof adhesive into the cement slurry under stirring, stirring for 3-5min, and smearing the cement slurry between a mortar layer and a concrete layer for use.
7. The method of claim 6, wherein,
the cement slurry is formed by stirring cement and water, wherein the mass ratio of the cement to the water is 1: (0.3-0.5).
8. The method of claim 7, wherein,
the usage amount of the waterproof adhesive is 0.1-0.35% of the weight of cement in the cement slurry.
9. The method of claim 6, wherein,
the mortar layer comprises 20-30wt% of cement, 40-60wt% of sand and 10-40wt% of water.
10. The method of claim 6, wherein,
the concrete layer comprises 8-12wt% of cement, 65-77wt% of sand stone, 0.1-0.5wt% of water reducer, 2-5wt% of fly ash, 1-3wt% of slag powder and 5-15.9wt% of water.
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| KR20020042578A (en) * | 2002-05-08 | 2002-06-05 | 이광재 | Low-water foaming composition for lightweight adiabatic foaming concrete |
| CN106565278A (en) * | 2016-11-04 | 2017-04-19 | 浙江省建筑科学设计研究院有限公司 | High-permeability concrete sealed waterproofing agent and preparation method thereof |
| CN106673485A (en) * | 2017-01-09 | 2017-05-17 | 重庆忠臬建筑科技有限公司 | Waterproof agent, waterproof and anti-crack mortar and self-waterproof building structure |
| CN110194647A (en) * | 2019-05-30 | 2019-09-03 | 梁光喜 | A kind of preparation method of water proof type light soil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20020042578A (en) * | 2002-05-08 | 2002-06-05 | 이광재 | Low-water foaming composition for lightweight adiabatic foaming concrete |
| CN106565278A (en) * | 2016-11-04 | 2017-04-19 | 浙江省建筑科学设计研究院有限公司 | High-permeability concrete sealed waterproofing agent and preparation method thereof |
| CN106673485A (en) * | 2017-01-09 | 2017-05-17 | 重庆忠臬建筑科技有限公司 | Waterproof agent, waterproof and anti-crack mortar and self-waterproof building structure |
| CN110194647A (en) * | 2019-05-30 | 2019-09-03 | 梁光喜 | A kind of preparation method of water proof type light soil |
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