CN106380135B - A kind of underwater alkaline environment masonry mortar - Google Patents
A kind of underwater alkaline environment masonry mortar Download PDFInfo
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- CN106380135B CN106380135B CN201610761630.XA CN201610761630A CN106380135B CN 106380135 B CN106380135 B CN 106380135B CN 201610761630 A CN201610761630 A CN 201610761630A CN 106380135 B CN106380135 B CN 106380135B
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- 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
- C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/74—Underwater applications
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of underwater alkaline environment masonry mortars, are made of the component of following weight proportion: 180~220 parts by weight of ordinary cement；30~50 parts by weight of special cement；705~715 parts by weight of nature medium sand；13~18 parts by weight of resin rubber powder；30~40 parts by weight of special additive；The special additive is by 2~5 parts by weight of thickener；0.5~1 parts by weight of super plasticizer；5~8 parts by weight of thixotropic agent；12~15 parts by weight of adjustable solidification agent；5~8 parts by weight of early strength agent mix.The present invention passes through the dedicated additive adjustment of masonry mortar under high-performance water, the preferable resinous material of alkaline resistance properties is added simultaneously, masonry mortar component is avoided to react under alkaline condition, the performance for influencing hardening and mortar, finally make masonry mortar have the advantages that be not easy to disperse under the conditions of submersible, well construction, alkaline-resisting, underwater normally harden and intensity is high.
Description
Technical field
The present invention relates to a kind of underwater alkaline environment masonry mortars.
Background technique
Cement mortar or concrete in the case where having water state or high disturbance, slurry meet can be easy after water isolation (cement is easy to run off,
Sand material is easily separated), while some components can participate in reacting under alkaline condition, to influence hardening and concrete or mortar
Performance.Previous underwater concrete building is built or the reparation of damage is generally using building cofferdam, drains water, then placing concrete or
Masonry panel, plastering mortar are completed.This kind of engineering haves the shortcomings that time-consuming, labour-consuming and expensive.Second method is to utilize to slip
Slot conduit, pumps, opens bottom container etc. normal concrete or mortar are transported to underwater casting or repair position to complete.But the
Common underwater concrete used by two kinds of methods or mortar are met water and are easily isolated, to influence the property of hardening and concrete or mortar
Can, not as good as draining, the method quality that water is poured or repaired is high.
For overcome it is conventional build cofferdam and draw water construct again and both underwater castings or method for repairing and mending that material property is bad
Deficiency, having developed non-dispersible underwater concrete, (non-dispersible un-derwater concrete, is abbreviated as
NDC), pouring or repair and can not building cofferdam for underwater concrete building is carried out with it, does not drain water, directly in water into
Row, and quality is reliable.Non-dispersible underwater concrete be some outer plus components are added in common underwater concrete, thus
There is a degree of dispersion resistance before so that concrete is obtained hardening under water.And in the underwater concrete thin layer for having certain flow rate
It repairs or builds in plastering, then need not dispersing fast hard mortar (abbreviation NDM) with underwater.Fast hard mortar is not dispersed under water by cement
Mortar incorporation special additive forms.
Though existing public technology lists the technology path of some underwater masonry mortar special additives, says with when related
It is bright, but effect is general in actual use, and without specific construction technology and product and construction technology explanation, results in reality
It border using effect and has little significance.
Summary of the invention
The object of the present invention is to provide a kind of underwater alkaline environment masonry mortars, to solve existing cement mortar in alkalinity
Under the conditions of participate in reaction, influence hardening and concrete or mortar performance issue.
The technical scheme to solve the above technical problems is that a kind of underwater alkaline environment masonry mortar, by with
The component of lower weight proportion is constituted: 180~220 parts by weight of ordinary cement；30~50 parts by weight of special cement；Nature medium sand 705
~715 parts by weight；13~18 parts by weight of resin rubber powder；30~40 parts by weight of special additive；The special additive is by thickening
2~5 parts by weight of agent；0.5~1 parts by weight of super plasticizer；5~8 parts by weight of thixotropic agent；12~15 parts by weight of adjustable solidification agent；Early strength agent 5
~8 parts by weight mix.
Preferably, the special cement is made of the component of following weight proportion: 3~6 parts by weight of sodium acetate；Flyash
5.5~8.5 parts by weight；0.8 parts by weight of sodium lignin sulfonate；55~68 parts by weight of portland cement of intensity 42.5.
Preferably, the thickener is selected from one of cellulose, cellulose ether, synthetic resin and synthetic resin derivative
Or it is several.It is highly preferred that the cellulose ether is hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether.
Preferably, the super plasticizer is selected from one or both of sulfate resin and sulfonate.
Preferably, in layer silicate mineral of the thixotropic agent selected from modified alta-mud, montmorillonite and aluminium-magnesium silicate
It is one or more of.
Preferably, the adjustable solidification agent is made of the component of following weight proportion: 13~17 parts by weight of anhydrous citric acid, anhydrous
28~32 parts by weight of sodium pyrophosphate, 2.5~3.5 parts by weight of sodium tripolyphosphate, 2~6 parts by weight of pre-gelatinized starch, sodium bentonite
28~30 parts by weight, 2.2~2.8 parts by weight of inorganic silicic acid magnalium gel.
Preferably, the early strength agent is made of the component of following weight proportion: 13~26 parts by weight of alkali metal bromide；Partially
26~36 parts by weight of sodium aluminate；25~45 parts by weight of alkali metal hydroxide；8~25 parts by weight of silica 1；Alcamines is organic
1.8~2.5 parts by weight of object；The alkali metal bromide is one of NaBr, KBr, LiBr, and the alkali metal hydroxide is
NaOH or KOH, the hydramine type organic are triethanolamine or triisopropanolamine.
Special additive of the present invention has following two application method:
1, underwater masonry mortar special additive, the additive are produced according to designed ratio of additive by mortar factory
For pure powder body material, after automatic equipment physical mixed, scene is proportionally spiked into designed masonry cement sand
In slurry, use after proportionally adding water and stirring uniformly.
2, dedicated outer according to masonry cement mortar and underwater masonry mortar by mortar factory according to practical building site situation and needs
The proportion for adding agent, the premixing mortar of quality of production stable homogeneous in factory, the ratio after transporting to scene as requested add water
Use after mixing evenly.
The beneficial effects of the present invention are:
By a kind of dedicated additive adjustment of masonry mortar under high-performance water, while the preferable resin of alkaline resistance properties is added
Class material avoids masonry mortar component and reacts under alkaline condition, influences the performance of hardening and mortar, finally to build
It builds mortar and has the advantages that be not easy to disperse under the conditions of submersible, construction, alkaline-resisting, underwater normal hardening and intensity are high well.
In special additive, thickener can increase the adherence of mixing object, to assign under water regardless of anti-point of loose sand slurry
It dissipates, education resistance energy.Super plasticizer can increase the fluidity and workability of mixing object, thus assign the preferable Self-leveling of material,
Self-compacting ability.Common super plasticizer is mainly sulfate resin and Sulfonates, and why such material has underwater anti-point
The performance for dissipating and not isolating.By the admixture of special cement and the collective effect of adjustable solidification agent, such material early-strong-fast-hard is imparted
Performance.By adjusting the dosage of the type of thickening material, volume and special cement and adjustable solidification agent in additive, guarantee mix
During band water transmission segregation phenomenon will not occur for good mortar；Meanwhile submersible has preferable application property,
Having can not be discrete under water and state of disturbance, and short-term quickly formed hardens well, and later strength conservation rate is preferable.
Specific embodiment
The embodiment recorded herein is specific specific embodiment of the invention, for illustrating design of the invention,
Be it is explanatory and illustrative, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Outside embodiment, those skilled in the art can also based on the claim of this application book and specification disclosure of that using aobvious and
The other technical solutions being clear to, these technical solutions include using any obvious to making for the embodiment recorded herein
The technical solution of substitutions and modifications.
Embodiment 1
The underwater alkaline environment of the present embodiment is made of with masonry mortar the component of following weight proportion: 200 weight of ordinary cement
Measure part；40 parts by weight of special cement；700 parts by weight of nature medium sand；15 parts by weight of resin rubber powder；35 parts by weight of special additive.
The special cement is made of the component of following weight proportion: 3 parts by weight of sodium acetate；8.5 parts by weight of flyash；Lignin sulfonic acid
0.8 parts by weight of sodium；55 parts by weight of portland cement of intensity 42.5.
The present embodiment special additive is made of the component of following weight proportion: 2 parts by weight of thickener；1 weight of super plasticizer
Measure part；5 parts by weight of thixotropic agent；12 parts by weight of adjustable solidification agent；8 parts by weight of early strength agent.
Wherein: thickener is cellulose；Super plasticizer is sulfate resin；Thixotropic agent is modified alta-mud；
The adjustable solidification agent is made of the component of following weight proportion: 13 parts by weight of anhydrous citric acid, anhydrous sodium pyrophosphate 32
Parts by weight, 2.5 parts by weight of sodium tripolyphosphate, 6 parts by weight of pre-gelatinized starch, 28 parts by weight of sodium bentonite, inorganic silicic acid magnalium
2.8 parts by weight of gel.
The early strength agent is made of the component of following weight proportion: 13 parts by weight of NaBr；36 parts by weight of sodium metaaluminate；
25 parts by weight of NaOH；25 parts by weight of silica；1.8 parts by weight of triethanolamine.
By mortar factory according to designed ratio of additive, underwater masonry mortar special additive is produced, which is
Pure powder body material can obtain after automatic equipment physical mixed.Scene is proportionally spiked into designed block when use
(mixing of ordinary cement, special cement, nature medium sand and resin rubber powder) is built in cement mortar, is proportionally added water and stirred uniformly
Use afterwards.
Embodiment 2
The underwater alkaline environment of the present embodiment is made of with masonry mortar the component of following weight proportion: 180 weight of ordinary cement
Measure part；50 parts by weight of special cement；705 parts by weight of nature medium sand；18 parts by weight of resin rubber powder；30 parts by weight of special additive.
The special cement is made of the component of following weight proportion: 6 parts by weight of sodium acetate；5.5 parts by weight of flyash；Lignin sulfonic acid
0.8 parts by weight of sodium；68 parts by weight of portland cement of intensity 42.5.
The present embodiment special additive is made of the component of following weight proportion: 5 parts by weight of thickener；Super plasticizer 0.5
Parts by weight；8 parts by weight of thixotropic agent；15 parts by weight of adjustable solidification agent；5 parts by weight of early strength agent.
Wherein: thickener is synthetic resin；Super plasticizer is sodium sulfonate；Thixotropic agent is montmorillonite；
The adjustable solidification agent is made of the component of following weight proportion: 17 parts by weight of anhydrous citric acid, anhydrous sodium pyrophosphate 28
Parts by weight, 3.5 parts by weight of sodium tripolyphosphate, 2 parts by weight of pre-gelatinized starch, 30 parts by weight of sodium bentonite, inorganic silicic acid magnalium
2.2 parts by weight of gel.
The early strength agent is made of the component of following weight proportion: 26 parts by weight of KBr；26 parts by weight of sodium metaaluminate；KOH
45 parts by weight；8 parts by weight of silica 1；2.5 parts by weight of triisopropanolamine.
Preparation method and use are the same as embodiment 1.
Embodiment 3
The underwater alkaline environment of the present embodiment is made of with masonry mortar the component of following weight proportion: 220 weight of ordinary cement
Measure part；30 parts by weight of special cement；715 parts by weight of nature medium sand；13 parts by weight of resin rubber powder；40 parts by weight of special additive.
The special cement is made of the component of following weight proportion: 4 parts by weight of sodium acetate；6 parts by weight of flyash；Sodium lignin sulfonate
0.8 parts by weight；60 parts by weight of portland cement of intensity 42.5.
The present embodiment special additive is made of the component of following weight proportion: 3 parts by weight of thickener；Super plasticizer 0.6
Parts by weight；6 parts by weight of thixotropic agent；12.5 parts by weight of adjustable solidification agent；6 parts by weight of early strength agent.
Wherein: thickener is hydroxypropyl methyl cellulose ether；Super plasticizer is sulfate resin；Thixotropic agent is bentone
Soil；
The adjustable solidification agent is made of the component of following weight proportion: 14 parts by weight of anhydrous citric acid, anhydrous sodium pyrophosphate 29
Parts by weight, 2.8 parts by weight of sodium tripolyphosphate, 3 parts by weight of pre-gelatinized starch, 29 parts by weight of sodium bentonite, inorganic silicic acid magnalium
2.4 parts by weight of gel.
The early strength agent is made of the component of following weight proportion: 15 parts by weight of LiBr；28 parts by weight of sodium metaaluminate；
30 parts by weight of NaOH；20 parts by weight of silica；2 parts by weight of triethanolamine.
Preparation method and use are the same as embodiment 1.
Embodiment 4
The underwater alkaline environment of the present embodiment is made of with masonry mortar the component of following weight proportion: 190 weight of ordinary cement
Measure part；36 parts by weight of special cement；706 parts by weight of nature medium sand；16 parts by weight of resin rubber powder；38 parts by weight of special additive.
The special cement is made of the component of following weight proportion: 5 parts by weight of sodium acetate；6.5 parts by weight of flyash；Lignin sulfonic acid
0.8 parts by weight of sodium；62 parts by weight of portland cement of intensity 42.5.
The present embodiment special additive is made of the component of following weight proportion: 4 parts by weight of thickener；Super plasticizer 0.8
Parts by weight；7 parts by weight of thixotropic agent；14 parts by weight of adjustable solidification agent；7 parts by weight of early strength agent.
Wherein: thickener is ethoxyl methyl cellulose ether；Super plasticizer is sodium sulfonate；Thixotropic agent is the layer of aluminium-magnesium silicate
Shape silicate mineral；
The adjustable solidification agent is made of the component of following weight proportion: 15 parts by weight of anhydrous citric acid, anhydrous sodium pyrophosphate 30
Parts by weight, 3 parts by weight of sodium tripolyphosphate, 4 parts by weight of pre-gelatinized starch, 29.5 parts by weight of sodium bentonite, inorganic silicic acid magnalium
2.5 parts by weight of gel.
The early strength agent is made of the component of following weight proportion: 20 parts by weight of KBr；30 parts by weight of sodium metaaluminate；KOH
35 parts by weight；22 parts by weight of silica；2.2 parts by weight of triisopropanolamine.
Preparation method and use are the same as embodiment 1.
Embodiment 5
The underwater alkaline environment of the present embodiment is made of with masonry mortar the component of following weight proportion: 210 weight of ordinary cement
Measure part；32 parts by weight of special cement；710 parts by weight of nature medium sand；14 parts by weight of resin rubber powder；32 parts by weight of special additive.
The special cement is made of the component of following weight proportion: 5.5 parts by weight of sodium acetate；8 parts by weight of flyash；Lignin sulfonic acid
0.8 parts by weight of sodium；65 parts by weight of portland cement of intensity 42.5.
The present embodiment special additive is made of the component of following weight proportion: 2.62 parts by weight of thickener；Super plasticizer
0.65 parts by weight；6.53 parts by weight of thixotropic agent；13.06 parts by weight of adjustable solidification agent；6.53 parts by weight of early strength agent.
Wherein:
Thickener is ethoxyl methyl cellulose ether；Super plasticizer is sodium sulfonate；Thixotropic agent is montmorillonite；
The adjustable solidification agent is made of the component of following weight proportion: 16 parts by weight of anhydrous citric acid, anhydrous sodium pyrophosphate 31
Parts by weight, 3.2 parts by weight of sodium tripolyphosphate, 5 parts by weight of pre-gelatinized starch, 29.8 parts by weight of sodium bentonite, inorganic silicic acid magnesium
2.6 parts by weight of alumina gel.
The early strength agent is made of the component of following weight proportion: 22 parts by weight of NaBr；34 parts by weight of sodium metaaluminate；
42 parts by weight of NaOH；24 parts by weight of silica；2.4 parts by weight of triisopropanolamine.
Preparation method and use are the same as embodiment 1.
Comparative example 1- comparative example 5
Resin glue powder component is removed in the corresponding formula of embodiment 1-5, obtains common masonry mortar.
Comparative example 6- comparative example 10
Special additive component is removed in the corresponding formula of embodiment 1-5, obtains common masonry mortar.
The performance test results:
Test method:
Alcohol coagulation test: test is solidifying by the 8th chapter in JGJ/T 70-2009 " building mortar basic performance tests method standard "
Time measuring method is tied to carry out.
Compression strength: test is vertical by the 9th chapter in JGJ/T 70-2009 " building mortar basic performance tests method standard "
Cube compressive strength test measuring method carries out.
Adhesive tensile resistance intensity: test is by the in JGJ/T 70-2009 " building mortar basic performance tests method standard " the 10th
Chapter tensile bond strength is tested measuring method and is carried out.
Show that masonry mortar performance, Main Conclusions are as follows through experimental study:
1, underwater alkaline environment masonry mortar is shorter than the ordinary mortar presetting period, only 40~50min, this is to having one
The underwater construction quality of constant current speed is advantageous.The presetting period of ordinary mortar is 76min.
2, the compression strength of underwater alkaline environment masonry mortar is higher than the ordinary mortar that special cement is not added, 28d age
High 40% or more, 180d age it is high by 55% or more.
3, underwater alkaline environment with adhesion strength in masonry mortar 3d water up to 0.95MPa, this and ordinary mortar 3d
The adhesion strength 1.1MPa of land natural curing substantially close to.Can guarantee do not disperse fast hard mortar under water will not be by circulating water
It washes away.
Each technical characteristic of above-mentioned disclosure is not limited to disclosed and other feature combination, and those skilled in the art are also
Can carry out other combinations between each technical characteristic according to the purpose of invention, be subject to realize the present invention purpose.
Claims (7)
1. a kind of underwater alkaline environment masonry mortar, is made of the component of following weight proportion: 180~220 weight of ordinary cement
Measure part；30~50 parts by weight of special cement；705~715 parts by weight of nature medium sand；13~18 parts by weight of resin rubber powder；It is dedicated outer
Add 30~40 parts by weight of agent；The special additive is by 2~5 parts by weight of thickener；0.5~1 parts by weight of super plasticizer；Thixotropic agent
5~8 parts by weight；12~15 parts by weight of adjustable solidification agent；5~8 parts by weight of early strength agent mix；
The underwater alkaline environment masonry mortar, which is characterized in that the special cement by following weight proportion component structure
At: 3~6 parts by weight of sodium acetate；5.5~8.5 parts by weight of flyash；0.8 parts by weight of sodium lignin sulfonate；The silicic acid of intensity 42.5
55~68 parts by weight of salt cement.
2. underwater alkaline environment masonry mortar according to claim 1, which is characterized in that the thickener is selected from fiber
One or more of element, cellulose ether, synthetic resin and synthetic resin derivative.
3. underwater alkaline environment masonry mortar according to claim 2, which is characterized in that the cellulose ether is hydroxypropyl
Ylmethyl cellulose ether or ethoxyl methyl cellulose ether.
4. underwater alkaline environment masonry mortar according to claim 3, which is characterized in that the super plasticizer is selected from sulphur
Change one or both of resin and sulfonate.
5. underwater alkaline environment masonry mortar according to claim 4, which is characterized in that the thixotropic agent, which is selected from, to be modified
One or more of bentonite, montmorillonite and layer silicate mineral of aluminium-magnesium silicate.
6. underwater alkaline environment masonry mortar according to claim 1-5, which is characterized in that the adjustable solidification agent
It is made of the component of following weight proportion: 13~17 parts by weight of anhydrous citric acid, 28~32 parts by weight of anhydrous sodium pyrophosphate, trimerization
2.5~3.5 parts by weight of sodium phosphate, 2~6 parts by weight of pre-gelatinized starch, 28~30 parts by weight of sodium bentonite, inorganic silicic acid magnalium
2.2~2.8 parts by weight of gel.
7. underwater alkaline environment masonry mortar according to claim 6, which is characterized in that the early strength agent is by following heavy
The component of amount proportion is constituted: 13~26 parts by weight of alkali metal bromide；26~36 parts by weight of sodium metaaluminate；Alkali metal hydroxide
25~45 parts by weight；8~25 parts by weight of silica 1；1.8~2.5 parts by weight of hydramine type organic；The alkali metal bromide
For one of NaBr, KBr, LiBr, the alkali metal hydroxide is NaOH or KOH, and the hydramine type organic is three second
Hydramine or triisopropanolamine.
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| CN112028568B (en) * | 2020-08-10 | 2021-12-10 | 青岛鑫岩建材有限公司 | Underwater non-diffusion concrete and preparation method thereof |
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| CN103061329B (en) * | 2012-08-28 | 2015-01-07 | 中铁十八局集团有限公司 | Underwater grouting grout based on soft-base large immersed tunnel foundation and grouting process thereof |
| CN104250076A (en) * | 2013-06-26 | 2014-12-31 | 邓忠玺 | Emergency first-aid repair special cement for construction engineering |
| CN103482898B (en) * | 2013-06-27 | 2015-06-10 | 俞锡贤 | Thickening time control agent used for gypsum mortar, and preparation method thereof |
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