CN107721231A - A kind of efficient early strength water-reducing agent of Compositional type for concrete - Google Patents
A kind of efficient early strength water-reducing agent of Compositional type for concrete Download PDFInfo
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- CN107721231A CN107721231A CN201710971212.8A CN201710971212A CN107721231A CN 107721231 A CN107721231 A CN 107721231A CN 201710971212 A CN201710971212 A CN 201710971212A CN 107721231 A CN107721231 A CN 107721231A
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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
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- 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
Abstract
The invention discloses a kind of efficient early strength water-reducing agent of the Compositional type for concrete, it is related to concrete additive technical field, is made up of the raw material of following parts by weight：750 35 40 parts of poly glycol monomethyl ether, 15 20 parts of soil level polyglutamic acid, 5 10 parts of HPMA, 5 10 parts of ultra-fine wollastonite in powder, 15 parts of allyl glycidyl ether, 15 parts of DAAM, 15 parts of dilauryl thiodipropionate, 0.5 3 parts of isomerous tridecanol polyoxyethylene ether, 0.5 3 parts of sodium gluconate.The made early strength water-reducing agent of the present invention can show excellent performance when its volume is the 2% of cement consumption, and water-reducing rate reaches more than 33%, and the presetting period reaches more than 45MPa in below 135min, final setting time in below 200min, 28d compression strength.
Description
Technical field：
The present invention relates to concrete additive technical field, and in particular to a kind of Compositional type for concrete is efficiently early strong
Water reducer.
Background technology：
With developing rapidly for social economy, requirement to concrete also more and more higher.According to statistics, more than 80% commodity
Concrete has all filled concrete admixture to improve performance, meets construction requirement.Now, concrete admixture is mainly to height
Effect, multi-functional and Composite direction are developed.The stability of fresh concrete can be improved using compound additive, if not from
Analysis, not bleeding etc., can also adjust aquation, the hardening process of cement, such as delay hydration heat, morning strong, high-strength.
Representative of the poly carboxylic acid series water reducer as third generation water reducer, it is many due to possessing environmentally friendly, high diminishing, high-thin arch dam etc.
Advantage has been used widely.At present, realize that there is poly carboxylic acid series water reducer early powerful method mainly there are two kinds：It is a kind of
It is that synthetic polymer has good early powerful in itself, another kind is the conventional polycarboxylate water-reducer of synthesis, early by compounding
Strong component reaches early strong effect.
Patent CN 103011670A disclose a kind of Early strength quick-setting type poly carboxylic acid series water reducer and preparation method thereof, CN
101357834B discloses a kind of early-strength polycarboxylic acids plasticiser, and CN 101205218B disclose a kind of early-strength polycarboxylic-acid
High-performance water reducing agent and preparation method thereof, CN 101497507A disclose a kind of early-strength anti-freezing type poly carboxylic acid series water reducer and its
Preparation method.Above patent exist produce it is early powerful while the problem of water-reducing property can be weakened, in order to ensure diminishing
Performance and increase the phenomenon that the measure of water reducer dosage occurs that concrete slump is excessive or isolated, and increase diminishing
The use cost of agent.
The content of the invention：
The technical problems to be solved by the invention, which are to provide a kind of water-reducing rate and reach for more than 33%, presetting period, to exist
Below 135min, final setting time are below 200min, 1d compression strength reach more than 14MPa, 28d compression strength reaches 45MPa
Above and initial slump 210 ± 10mm the efficient early strength water-reducing agent of the Compositional type for concrete.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of efficient early strength water-reducing agent of Compositional type for concrete, is made up of the raw material of following parts by weight：
Poly glycol monomethyl ether 75035-40 parts, soil level polyglutamic acid 15-20 parts, HPMA 5-10
Part, ultra-fine wollastonite in powder 5-10 parts, allyl glycidyl ether 1-5 parts, DAAM 1-5 parts, thio-2 acid two
Lauryl 1-5 parts, isomerous tridecanol polyoxyethylene ether 0.5-3 parts, sodium gluconate 0.5-3 parts.
Its preparation method comprises the following steps：
(1) add water until being completely dissolved into soil level polyglutamic acid and HPMA under stirring, 3- is added dropwise
5wt% dilution heat of sulfuric acid adjusts pH value to 3-4, adds poly glycol monomethyl ether 750, adds water until poly glycol monomethyl ether
750 are completely dissolved, and are then heated to reflux state insulated and stirred 3-5h, gained mixture is through being concentrated under reduced pressure into solid content 45-
55% lotion, and 0-5 DEG C of insulated and stirred 15-30min is cooled to 5 DEG C/min cooling velocity, finally it is sent into freeze-drying
In machine, dry gained solid and micro mist is made through micronizer, produce esters high-molecular compound；
(2) esters high-molecular compound is heated to 115-125 DEG C of insulated and stirred 5-10min, and adds allyl glycidyl
Glycerin ether and DAAM, then continue insulated and stirred 15-30min at 115-125 DEG C, room temperature is naturally cooled to, i.e.,
Esters high-molecular compound must be modified；
(3) isomerous tridecanol polyoxyethylene ether and sodium gluconate are added into dilauryl thiodipropionate, and is heated
To 115-125 DEG C of insulated and stirred 10-15min, auxiliary agent is produced；
(4) ultra-fine wollastonite in powder and auxiliary agent are added into modified esters high-molecular compound, through vacuum pressure after being sufficiently mixed
Shorten block into, and be transferred to sealing and standing 3-5h in -10 DEG C of environment, micro mist most is made through micronizer afterwards, produces early strength water-reducing agent.
The average grain diameter of the ultra-fine wollastonite in powder is at 15-20 μm.
The molecular weight of the HPMA is in 600-700.
The ultra-fine wollastonite in powder passes through modification, and its specific method of modifying is：Ultra-fine wollastonite in powder is placed in 130-
5-8h is dried in 140 DEG C of baking ovens, through naturally cooling to room temperature, and is scattered in the water of 3-5 times of parts by weight, adds metering system
Sour hydroxyl ethyl ester, magnesium dimethacrylate and potassium peroxydisulfate, microwave treater microwave reflow treatment 5min is utilized after being sufficiently mixed,
Continue microwave reflow treatment 5min after 5min, be spaced after 5min microwave reflow treatment 5min again, so repeatedly, control microwave
Gained mixture was stirred to moisture at 65-75 DEG C and volatilized, and finally utilizes ultramicro grinding in 30-45min reflow treatment total time
Micro mist is made in machine, produces modified wollastonite powder.
The ultra-fine wollastonite in powder, hydroxyethyl methacrylate, the weight ratio of magnesium dimethacrylate and potassium peroxydisulfate are
10-15:1-5:1-5:0.01-0.05。
The condition of work of the microwave treater is microwave frequency 2450MHz, power output 700W.
Above-mentioned made early strength water-reducing agent when in use first using pre-mixing apparatus and cement mix, the pre-mixing apparatus include by
The blending tank and tank body supporting table of feed space and mixing chamber composition, level was provided with material screen between the feed space and mixing chamber
Net, feed space top are provided with bagged cement charging aperture and early strength water-reducing agent charging aperture, and feed space side wall is provided with a deslagging cylinder
With two it is symmetrical cut a bag cylinder, the guide rod for cutting bag cylinder vertically penetrates in feed space and front end and is provided with the semi-circular to match
A bag blade is cut, the guide rod of deslagging cylinder vertically penetrates in feed space and front end and is provided with the slag discharge plate being bonded vertical with punishment in advance screen cloth,
The feed space side wall of slag discharge plate face is provided with ash gate, and horizontal be provided with drives the spiral of rotation to mix by motor in the mixing chamber
Expect blade, mixing chamber bottom is provided with discharging opening, outer wall is arranged with vibrating motor on the upside of mixing chamber, downside outer wall is arranged with and
Tank body supporting table vibrating spring connected vertically.
The trans D cut the internal radius formed after bag blade closure and be less than bagged cement.
It is vertical on the bagged cement charging aperture to be provided with a pair of charging limiting plates, form engaging between two charging limiting plates
The limit space of bagged cement.
The batch mixing chamber interior walls are provided with multiple spraying humidification mouths towards spiral batch mixing blade.
It is vertical in the tank body supporting table to be provided with the spring retainer post being enclosed on inside vibrating spring.
The screen cloth that the feed space is provided with installation punishment in advance screen cloth with mixing chamber junction puts platform.
The operation principle of the present invention：
In use, first close discharging opening, bagged cement charging aperture and vibrating motor switch are opened, using lifting appliance by bag
Dress cement is vertically stuck in limit space and bagged cement bottom is stretched into feed space, then opens and cuts a bag cylinder operation switch,
The packaging bag of bagged cement is cut using bag blade is cut, the cement of outflow is entered under vibrating motor effect by punishment in advance screen cloth
Mixing chamber, cement package bags are lifted using lifting appliance after middle cement in bag flows completely out and deliver to specified location, cut bag
Reciprocating knives carry out cutting a bag blowing with the bagged cement for being one by one sent into feed space later use lifting appliance；And open
Deslagging cylinder operation switchs, using slag discharge plate and ash gate by the cement package bags under cutting and unsifted cement slurry discharge into
Expect room；Motor operating switch and water reducer charging aperture are opened again adds water reducer, motor driving spiral batch mixing blade to feed space
Rotation is humidified so that water reducer is dispersed in cement by spraying humidification mouth to mixed material, to reduce batch mixing
Chamber interior dust pressure promotes water reducer further dispersed in cement simultaneously；Batch mixing opens discharging opening after terminating, will
The cement mixed is discharged with water reducer compound.
The beneficial effects of the invention are as follows：
(1) hydroxyethyl methacrylate and magnesium dimethacrylate through chemical crosslink reaction wollastonite in powder surface and its
Acrylic resin is formed in grain internal structure, wollastonite in powder and early strong diminishing are improved while wollastonite in powder performance is strengthened
The comixing compatibility of remaining preparing raw material of agent and cement；
(2) esters macromolecule is made through esterification with polyglutamic acid, HPMA in poly glycol monomethyl ether
Compound, and further modified esters high-molecular compound is made in modified processing, made modified esters high-molecular compound is made
For the major ingredient of early strength water-reducing agent, significant early strong water-reducing effect is played；
(3) made early strength water-reducing agent can show excellent performance when its volume is the 2% of cement consumption, subtract
Water rate reaches more than 33%, and the presetting period reaches in below 135min, final setting time in below 200min, 1d compression strength
More than 14MPa, 28d compression strength reach more than 45MPa, and initial slump is in 210 ± 10mm；And the early strength water-reducing agent is to steel
Muscle non-corroding acts on, no alkali-aggregate reaction, can be widely used in each grade commerical ready-mixed concrete, high-speed railway, highway, big
In the high quality concrete such as type bridge, prefabricated components, be particularly suitable for use in the various concrete constructions with early strong demand；
(4) by the structure setting of the pre-mixing apparatus, the automation batch mixing of cement and water reducer is realized, saves the same of manpower
The Shi Tigao batch mixing uniformitys, make water reducer be dispersed in cement；And mitigate during cement cuts bag produced dust to work
Make the pollution of environment, while realize the sieving of cement, prevent caking cement from agglomeration occurring in mixing process so as to influence
Water reducer it is dispersed；Also by the setting of vibrating motor and vibrating spring, accelerate the velocity through screen of material and improve mixed
Expect the uniformity, and mixed material is humidified by spraying humidification mouth to reduce dust pressure inside mixing chamber while promote
Water reducer is further dispersed in cement.
Brief description of the drawings：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structure top view that the present invention cuts bag blade；
Wherein：1- feed spaces；2- mixing chambers；3- tank body supporting tables；4- punishment in advance screen clothes；5- bagged cement charging apertures；6- is early
Strength water-reducing agent charging aperture；7- deslagging cylinders；8- cuts a bag cylinder；9- cuts a bag blade；10- slag discharge plates；11- ash gates；12- spirals mix
Expect blade；13- discharging openings；14- vibrating motors；15- vibrating springs；16- feeds limiting plate；17- limit spaces；18- sprayings add
Wet mouth；19- spring retainer posts；20- screen clothes put platform；21- motors.
Embodiment：
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
(1) water is added until being completely dissolved into 20g soil level polyglutamic acids and 10g HPMAs under stirring,
5wt% dilution heat of sulfuric acid is added dropwise and adjusts pH value to 3-4, adds 40g poly glycol monomethyl ethers 750, adds water until poly- second two
Alcohol monomethyl ether 750 is completely dissolved, and is then heated to reflux state insulated and stirred 3h, gained mixture is through being concentrated under reduced pressure into solid content
45-55% lotion, and 0-5 DEG C of insulated and stirred 30min is cooled to 5 DEG C/min cooling velocity, finally it is sent into freeze-drying
In machine, dry gained solid and micro mist is made through micronizer, produce esters high-molecular compound；
(2) esters high-molecular compound is heated to 115-125 DEG C of insulated and stirred 5min, and it is sweet to add 5g allyl glycidyls
Oily ether and 2g DAAM, then continue insulated and stirred 30min at 115-125 DEG C, room temperature is naturally cooled to, produces and changes
Property esters high-molecular compound；
(3) 2g isomerous tridecanol polyoxyethylene ethers and 1g sodium gluconates are added into 3g dilauryl thiodipropionates,
And 115-125 DEG C of insulated and stirred 15min is heated to, produce auxiliary agent；
(4) the ultra-fine wollastonites in powder of 5g and auxiliary agent are added into modified esters high-molecular compound, through vacuum after being sufficiently mixed
Compress blocking, and be transferred to sealing and standing 5h in -10 DEG C of environment, micro mist most is made through micronizer afterwards, produces early strength water-reducing agent.
Embodiment 2
(1) add water until being completely dissolved into 15g soil level polyglutamic acids and 5g HPMAs under stirring, drip
Add 5wt% dilution heat of sulfuric acid to adjust pH value to 3-4, add 35g poly glycol monomethyl ethers 750, add water until polyethylene glycol
Monomethyl ether 750 is completely dissolved, and is then heated to reflux state insulated and stirred 3h, gained mixture is through being concentrated under reduced pressure into solid content
45-55% lotion, and 0-5 DEG C of insulated and stirred 30min is cooled to 5 DEG C/min cooling velocity, finally it is sent into freeze-drying
In machine, dry gained solid and micro mist is made through micronizer, produce esters high-molecular compound；
(2) esters high-molecular compound is heated to 115-125 DEG C of insulated and stirred 5min, and it is sweet to add 3g allyl glycidyls
Oily ether and 3g DAAM, then continue insulated and stirred 30min at 115-125 DEG C, room temperature is naturally cooled to, produces and changes
Property esters high-molecular compound；
(3) 2g isomerous tridecanol polyoxyethylene ethers and 0.5g gluconic acids are added into 3g dilauryl thiodipropionates
Sodium, and 115-125 DEG C of insulated and stirred 15min is heated to, produce auxiliary agent；
(4) the ultra-fine wollastonites in powder of 10g and auxiliary agent are added into modified esters high-molecular compound, through vacuum after being sufficiently mixed
Compress blocking, and be transferred to sealing and standing 5h in -10 DEG C of environment, micro mist most is made through micronizer afterwards, produces early strength water-reducing agent.
Embodiment 3
(1) water is added until being completely dissolved into 20g soil level polyglutamic acids and 10g HPMAs under stirring,
5wt% dilution heat of sulfuric acid is added dropwise and adjusts pH value to 3-4, adds 40g poly glycol monomethyl ethers 750, adds water until poly- second two
Alcohol monomethyl ether 750 is completely dissolved, and is then heated to reflux state insulated and stirred 3h, gained mixture is through being concentrated under reduced pressure into solid content
45-55% lotion, and 0-5 DEG C of insulated and stirred 30min is cooled to 5 DEG C/min cooling velocity, finally it is sent into freeze-drying
In machine, dry gained solid and micro mist is made through micronizer, produce esters high-molecular compound；
(2) esters high-molecular compound is heated to 115-125 DEG C of insulated and stirred 5min, and it is sweet to add 5g allyl glycidyls
Oily ether and 2g DAAM, then continue insulated and stirred 30min at 115-125 DEG C, room temperature is naturally cooled to, produces and changes
Property esters high-molecular compound；
(3) 2g isomerous tridecanol polyoxyethylene ethers and 1g sodium gluconates are added into 3g dilauryl thiodipropionates,
And 115-125 DEG C of insulated and stirred 15min is heated to, produce auxiliary agent；
(4) the ultra-fine wollastonites in powder of 5g and auxiliary agent are added into modified esters high-molecular compound, through vacuum after being sufficiently mixed
Compress blocking, and be transferred to sealing and standing 5h in -10 DEG C of environment, micro mist most is made through micronizer afterwards, produces early strength water-reducing agent.
The modification of ultra-fine wollastonite in powder：The ultra-fine wollastonites in powder of 15g are placed in 130-140 DEG C of baking oven and dry 8h, through nature
Room temperature is cooled to, and is scattered in the water of 3 times of parts by weight, adds 5g hydroxyethyl methacrylates, 3g magnesium dimethacrylates
With 0.05g potassium peroxydisulfates, returned after being sufficiently mixed using microwave frequency 2450MHz, power output 700W microwave treater microwave
Stream process 5min, continue microwave reflow treatment 5min after being spaced 5min, be spaced after 5min microwave reflow treatment 5min again, so
Repeatedly, controlling microwave reflow treatment total time, gained mixture is stirred to moisture at 65-75 DEG C and volatilized in 30min, last profit
Micro mist is made with micronizer, produces modified wollastonite powder.
Embodiment 4
(1) add water until being completely dissolved into 15g soil level polyglutamic acids and 5g HPMAs under stirring, drip
Add 5wt% dilution heat of sulfuric acid to adjust pH value to 3-4, add 35g poly glycol monomethyl ethers 750, add water until polyethylene glycol
Monomethyl ether 750 is completely dissolved, and is then heated to reflux state insulated and stirred 3h, gained mixture is through being concentrated under reduced pressure into solid content
45-55% lotion, and 0-5 DEG C of insulated and stirred 30min is cooled to 5 DEG C/min cooling velocity, finally it is sent into freeze-drying
In machine, dry gained solid and micro mist is made through micronizer, produce esters high-molecular compound；
(2) esters high-molecular compound is heated to 115-125 DEG C of insulated and stirred 5min, and it is sweet to add 3g allyl glycidyls
Oily ether and 3g DAAM, then continue insulated and stirred 30min at 115-125 DEG C, room temperature is naturally cooled to, produces and changes
Property esters high-molecular compound；
(3) 2g isomerous tridecanol polyoxyethylene ethers and 0.5g gluconic acids are added into 3g dilauryl thiodipropionates
Sodium, and 115-125 DEG C of insulated and stirred 15min is heated to, produce auxiliary agent；
(4) the ultra-fine wollastonites in powder of 10g and auxiliary agent are added into modified esters high-molecular compound, through vacuum after being sufficiently mixed
Compress blocking, and be transferred to sealing and standing 5h in -10 DEG C of environment, micro mist most is made through micronizer afterwards, produces early strength water-reducing agent.
The modification of ultra-fine wollastonite in powder：The ultra-fine wollastonites in powder of 10g are placed in 130-140 DEG C of baking oven and dry 8h, through nature
Room temperature is cooled to, and is scattered in the water of 3 times of parts by weight, adds 3g hydroxyethyl methacrylates, 2g magnesium dimethacrylates
With 0.05g potassium peroxydisulfates, returned after being sufficiently mixed using microwave frequency 2450MHz, power output 700W microwave treater microwave
Stream process 5min, continue microwave reflow treatment 5min after being spaced 5min, be spaced after 5min microwave reflow treatment 5min again, so
Repeatedly, controlling microwave reflow treatment total time, gained mixture is stirred to moisture at 65-75 DEG C and volatilized in 30min, last profit
Micro mist is made with micronizer, produces modified wollastonite powder.
Reference examples 1
(1) add water until being completely dissolved into 15g soil level polyglutamic acids and 5g HPMAs under stirring, drip
Add 5wt% dilution heat of sulfuric acid to adjust pH value to 3-4, add 35g poly glycol monomethyl ethers 750, add water until polyethylene glycol
Monomethyl ether 750 is completely dissolved, and is then heated to reflux state insulated and stirred 3h, gained mixture is through being concentrated under reduced pressure into solid content
45-55% lotion, and 0-5 DEG C of insulated and stirred 30min is cooled to 5 DEG C/min cooling velocity, finally it is sent into freeze-drying
In machine, dry gained solid and micro mist is made through micronizer, produce esters high-molecular compound；
(2) esters high-molecular compound is heated to 115-125 DEG C of insulated and stirred 5min, and it is sweet to add 3g allyl glycidyls
Oily ether and 3g DAAM, then continue insulated and stirred 30min at 115-125 DEG C, room temperature is naturally cooled to, produces and changes
Property esters high-molecular compound；
(3) the ultra-fine wollastonites in powder of 10g are added into modified esters high-molecular compound, after being sufficiently mixed through vacuum compression into
Block, and sealing and standing 5h in -10 DEG C of environment is transferred to, micro mist most is made through micronizer afterwards, produces early strength water-reducing agent.
Reference examples 2
(1) add water until being completely dissolved into 15g soil level polyglutamic acids and 5g HPMAs under stirring, drip
Add 5wt% dilution heat of sulfuric acid to adjust pH value to 3-4, add 35g poly glycol monomethyl ethers 750, add water until polyethylene glycol
Monomethyl ether 750 is completely dissolved, and is then heated to reflux state insulated and stirred 3h, gained mixture is through being concentrated under reduced pressure into solid content
45-55% lotion, and 0-5 DEG C of insulated and stirred 30min is cooled to 5 DEG C/min cooling velocity, finally it is sent into freeze-drying
In machine, dry gained solid and micro mist is made through micronizer, produce esters high-molecular compound；
(2) 2g isomerous tridecanol polyoxyethylene ethers and 0.5g gluconic acids are added into 3g dilauryl thiodipropionates
Sodium, and 115-125 DEG C of insulated and stirred 15min is heated to, produce auxiliary agent；
(3) the ultra-fine wollastonites in powder of 10g and auxiliary agent are added into esters high-molecular compound, through vacuum compression after being sufficiently mixed
It is blocking, and sealing and standing 5h in -10 DEG C of environment is transferred to, micro mist most is made through micronizer afterwards, produces early strength water-reducing agent.
Reference examples 3
(1) 2g isomerous tridecanol polyoxyethylene ethers and 0.5g gluconic acids are added into 3g dilauryl thiodipropionates
Sodium, and 115-125 DEG C of insulated and stirred 15min is heated to, produce auxiliary agent；
(2) added into 35g poly glycol monomethyl ethers 750 15g soil levels polyglutamic acids, 5g HPMAs,
The ultra-fine wollastonites in powder of 10g and auxiliary agent, it is blocking through vacuum compression after being sufficiently mixed, and sealing and standing 5h in -10 DEG C of environment is transferred to, most
Micro mist is made by micronizer, produces early strength water-reducing agent.
Embodiment 5
By the made early strength water-reducing agent of equivalent embodiment 1-4, reference examples 1-3 with reference to GB 8076-2016《Concrete admixture》
Water-reducing rate and the setting time of concrete are determined, and with reference to GB/T 50081-2016《Normal concrete mechanical test method
Standard》Compression strength is determined, measurement result is as shown in table 1.It is real with patent CN106007452A embodiments 1, CN 104193913A
1 made early strength water-reducing agent of example is applied as reference examples 4, reference examples 5.
Concrete batching：P.042.5 sand, the weight proportion of 5-10mm continuous grading rubbles in cement, modulus of fineness 2.6
360:780:1080, adjustment water consumption makes fresh concrete initial slump be 210 ± 10mm, and early strength water-reducing agent volume is cement
The 2% of weight.
The performance measurement result of 1 early strength water-reducing agent of the present invention of table
Embodiment 6
(1) add water until being completely dissolved into 15g soil level polyglutamic acids and 5g HPMAs under stirring, drip
Add 5wt% dilution heat of sulfuric acid to adjust pH value to 3-4, add 35g poly glycol monomethyl ethers 750, add water until polyethylene glycol
Monomethyl ether 750 is completely dissolved, and is then heated to reflux state insulated and stirred 3h, gained mixture is through being concentrated under reduced pressure into solid content
45-55% lotion, and 0-5 DEG C of insulated and stirred 30min is cooled to 5 DEG C/min cooling velocity, finally it is sent into freeze-drying
In machine, dry gained solid and micro mist is made through micronizer, produce esters high-molecular compound；
(2) esters high-molecular compound is heated to 115-125 DEG C of insulated and stirred 5min, and it is sweet to add 3g allyl glycidyls
Oily ether and 3g DAAM, then continue insulated and stirred 30min at 115-125 DEG C, room temperature is naturally cooled to, produces and changes
Property esters high-molecular compound；
(3) 2g isomerous tridecanol polyoxyethylene ethers and 0.5g gluconic acids are added into 3g dilauryl thiodipropionates
Sodium, and 115-125 DEG C of insulated and stirred 15min is heated to, produce auxiliary agent；
(4) the ultra-fine wollastonites in powder of 10g and auxiliary agent are added into modified esters high-molecular compound, through vacuum after being sufficiently mixed
Compress blocking, and be transferred to sealing and standing 5h in -10 DEG C of environment, micro mist most is made through micronizer afterwards, produces early strength water-reducing agent.
The modification of ultra-fine wollastonite in powder：The ultra-fine wollastonites in powder of 10g are placed in 130-140 DEG C of baking oven and dry 8h, through nature
Room temperature is cooled to, and is scattered in the water of 3 times of parts by weight, adds 3g hydroxyethyl methacrylates, 2g magnesium dimethacrylates
With 0.05g potassium peroxydisulfates, returned after being sufficiently mixed using microwave frequency 2450MHz, power output 700W microwave treater microwave
Stream process 5min, continue microwave reflow treatment 5min after being spaced 5min, be spaced after 5min microwave reflow treatment 5min again, so
Repeatedly, controlling microwave reflow treatment total time, gained mixture is stirred to moisture at 65-75 DEG C and volatilized in 30min, last profit
Micro mist is made with micronizer, produces modified wollastonite powder.
Above-mentioned made early strength water-reducing agent is first included by feeding using pre-mixing apparatus and cement mix, pre-mixing apparatus when in use
The blending tank and tank body supporting table 3 that room 1 and mixing chamber 2 form, level was provided with material screen between the feed space and mixing chamber
Net 4, feed space top are provided with bagged cement charging aperture 5 and early strength water-reducing agent charging aperture 6, and feed space side wall is provided with a deslagging gas
Cylinder 7 and two it is symmetrical cut bag cylinder 8, the guide rod for cutting bag cylinder vertically penetrates in feed space and front end and is provided with half to match
Annular cuts bag blade 9, and the guide rod of deslagging cylinder vertically penetrates in feed space and front end and is provided with the row being bonded vertical with punishment in advance screen cloth
Slag plate 10, the feed space side wall of slag discharge plate face are provided with ash gate 11, and horizontal be provided with is driven by motor 21 in the mixing chamber
The spiral batch mixing blade 12 of rotation, mixing chamber bottom are provided with discharging opening 13, on the upside of mixing chamber outer wall be arranged with vibrating motor 14,
Downside outer wall is arranged with vibrating spring 15 connected vertically with tank body supporting table.
The trans D that the internal radius formed after bag blade closure is less than bagged cement is cut, is hung down on bagged cement charging aperture
It is straight to be provided with a pair of charging limiting plates 16, the limit space 17 of engaging bagged cement, mixing chamber are formed between two charging limiting plates
Inwall is provided with multiple spraying humidification mouths 18 towards spiral batch mixing blade, and vertical be provided with is enclosed in vibrating spring in tank body supporting table
The spring retainer post 19 in portion, the screen cloth that feed space is provided with installation punishment in advance screen cloth with mixing chamber junction put platform 20.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
- A kind of 1. efficient early strength water-reducing agent of Compositional type for concrete, it is characterised in that：By the raw material system of following parts by weight Into：It is poly glycol monomethyl ether 75035-40 parts, soil level polyglutamic acid 15-20 parts, HPMA 5-10 parts, super Thin wollastonite in powder 5-10 parts, allyl glycidyl ether 1-5 parts, DAAM 1-5 parts, dilauryl thiodipropionate 1-5 parts, isomerous tridecanol polyoxyethylene ether 0.5-3 parts, sodium gluconate 0.5-3 parts.
- 2. the efficient early strength water-reducing agent of the Compositional type according to claim 1 for concrete, it is characterised in that：Its preparation side Method comprises the following steps：(1) add water until being completely dissolved into soil level polyglutamic acid and HPMA under stirring, 3-5wt% is added dropwise Dilution heat of sulfuric acid adjusts pH value to 3-4, adds poly glycol monomethyl ether 750, adds water until poly glycol monomethyl ether 750 is complete Fully dissolved, is then heated to reflux state insulated and stirred 3-5h, and gained mixture is through being concentrated under reduced pressure into solid content 45-55% cream Body, and 0-5 DEG C of insulated and stirred 15-30min is cooled to 5 DEG C/min cooling velocity, finally it is sent into freeze drier, dries Micro mist is made through micronizer in gained solid, produces esters high-molecular compound；(2) esters high-molecular compound is heated to 115-125 DEG C of insulated and stirred 5-10min, and adds allyl glycidol Ether and DAAM, then continue insulated and stirred 15-30min at 115-125 DEG C, room temperature is naturally cooled to, produces and changes Property esters high-molecular compound；(3) isomerous tridecanol polyoxyethylene ether and sodium gluconate are added into dilauryl thiodipropionate, and is heated to 115-125 DEG C of insulated and stirred 10-15min, produces auxiliary agent；(4) ultra-fine wollastonite in powder and auxiliary agent are added into modified esters high-molecular compound, after being sufficiently mixed through vacuum compression into Block, and sealing and standing 3-5h in -10 DEG C of environment is transferred to, micro mist most is made through micronizer afterwards, produces early strength water-reducing agent.
- 3. the efficient early strength water-reducing agent of the Compositional type according to claim 1 or 2 for concrete, it is characterised in that：It is described The average grain diameter of ultra-fine wollastonite in powder is at 15-20 μm.
- 4. the efficient early strength water-reducing agent of the Compositional type according to claim 1 or 2 for concrete, it is characterised in that：It is described The molecular weight of HPMA is in 600-700.
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|---|---|---|---|
| CN201710971212.8A CN107721231A (en) | 2017-10-18 | 2017-10-18 | A kind of efficient early strength water-reducing agent of Compositional type for concrete |
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| CN201710971212.8A CN107721231A (en) | 2017-10-18 | 2017-10-18 | A kind of efficient early strength water-reducing agent of Compositional type for concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108409187A (en) * | 2018-04-27 | 2018-08-17 | 江苏金海宁新型建材科技有限公司 | A kind of special early strength water-reducing agent of prefabricated components |
| CN108558309A (en) * | 2018-04-19 | 2018-09-21 | 凤阳县凤城建安预制厂 | A kind of road dental calculus prepared using solid waste blast furnace slag and flyash processing |
| CN108585725A (en) * | 2018-04-19 | 2018-09-28 | 凤阳县凤城建安预制厂 | A kind of technique preparing road dental calculus using the concrete processing containing asbestos wool |
-
2017
- 2017-10-18 CN CN201710971212.8A patent/CN107721231A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108558309A (en) * | 2018-04-19 | 2018-09-21 | 凤阳县凤城建安预制厂 | A kind of road dental calculus prepared using solid waste blast furnace slag and flyash processing |
| CN108585725A (en) * | 2018-04-19 | 2018-09-28 | 凤阳县凤城建安预制厂 | A kind of technique preparing road dental calculus using the concrete processing containing asbestos wool |
| CN108585725B (en) * | 2018-04-19 | 2021-03-26 | 凤阳县凤城建安预制厂 | Process for preparing curb stone by processing concrete containing asbestos wool |
| CN108409187A (en) * | 2018-04-27 | 2018-08-17 | 江苏金海宁新型建材科技有限公司 | A kind of special early strength water-reducing agent of prefabricated components |
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