CN110041034A - A kind of Novel free steam pressure concrete brick and its binder - Google Patents
A kind of Novel free steam pressure concrete brick and its binder Download PDFInfo
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- CN110041034A CN110041034A CN201910319034.XA CN201910319034A CN110041034A CN 110041034 A CN110041034 A CN 110041034A CN 201910319034 A CN201910319034 A CN 201910319034A CN 110041034 A CN110041034 A CN 110041034A
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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
- C04B28/04—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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
- C04B2111/00646—Masonry mortars
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/24—Sea water resistance
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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 belongs to building material technical field, a kind of Novel free steam pressure concrete brick and its binder are disclosed；Expansion aggregate is formed using the spherical high-performance water-absorbing resin adsorbing seawater that water absorbent rate is 15~18, then admixes the materials such as cement according to the ratio, adds new concrete made of seawater mix, can be reduced significantly for the transport of islands and reefs engineered building materials.Brick resistance to compression average value of the invention is 28.99MPa, flexural strength 4.58MPa, and the hole ratio of brick is 20.1%, moisture content 7.3%, water absorption rate 15.4%, density 1467kg/m3.After binder solidification in the present invention, adhesive layer thickness 2-3mm draws cut and paste knotting strength >=1.5MPa, pulls off adhesion strength >=1.0MPa, compression strength >=8.0MPa, shrinkage value≤1.0mm/m, 50 freezing-thawing strength damage≤2.0%, bonding curing time is 1h-5h.
Description
Technical field
The invention belongs to building material technical field more particularly to a kind of Novel free steam pressure concrete bricks and its binder.
Background technique
Currently, the prior art commonly used in the trade is such that
For Reef in Chinese South Sea far from continent, available buildings and resources are deficient, islands and reefs engineering construction exist transport, constructional difficulties and
The problems such as period is long.Quick construction material can not be prepared by conventional methods such as fired clay bricks on islands and reefs, be based on concrete
Preparing quick construction material is more reliable technological approaches.To reduce the freight volume that normal concrete thickness is gathered materials, island is realized
Reef engineering concrete material is gathered materials on the spot, and traditional technological means is using coral reef sand as substitution crushed stone aggregate, preparation
Then Coral Reef Sand Concrete prepares quick construction material using Coral Reef Sand Concrete.But this this kind of concrete density is high,
From great, it is not suitable for preparing the construction materials such as brick.And this kind of concrete, due to containing coarse aggregate, maintenance is held under general condition
It is easy to crack, need special steam pressure environment to be conserved.Due to island remote location, condition is simple and crude, builds dedicated steam pressure and supports
It is too high to protect room cost.Therefore the prior art is difficult to prepare quick construction material on islands and reefs, ship can only be relied on from big land transportation
Send brick.
Current masonry technology often uses the masonry mortar of 8~12cm.And this so-called " thick-layer technology " is deposited
In many problems, such as mortar joint since construction technology and weathering problem become not full, leakiness, brick setting integral strength is influenced.
Mortar used by especially traditional thick-layer technology causes greatly many freights due to transport of materials amount.And " thin-bed technique "
This construction method has application in foreign countries at present, not only solves the problems, such as that transport of materials amount is big, even more to the stress of masonry
Performance is greatly improved and is promoted.But this " thin-bed technique " needs advanced adhesive special system.Traditional is common
Masonry mortar adhesive property is very poor, and dedicated binder must have a small amount of and efficient cementability.
In conclusion problem of the existing technology is:
(1) ordinary fired brick is needed using non-renewable resources --- environmental requirement is not achieved in clay；Islands and reefs do not have greatly
Measure the condition of raw clay；
(2) rubble needed for conventional concrete brick is needed from transcontinental shipments, and cost is excessively high；And this concrete brick needs
Steam press maintenance, islands and reefs, which do not have, builds the large-scale this condition in steam press maintenance room；
(3) traditional common masonry mortar adhesive property is very poor, and dedicated binder must have a small amount of and efficiently glue
Knot ability.
Solve the difficulty and meaning of above-mentioned technical problem: seawater aggregate concrete is the new concrete just occurred in recent years
Material is drawn seawater using a small amount of water-absorbing resin (SuperAbsorbentPolymer, SAP) of transport or storage on the spot and is prepared
A large amount of concrete coarse aggregates greatly reduce the freight volume of rubble coarse aggregate, reduce Cost of Concrete.Inside seawater aggregate concrete
The pore structure system having, can not only reduce autologous density, suitable for preparing block material, the sea also drawn using resin
Water persistently conserves, and promotes intensity and durability.Due to hole shell structure special inside seawater aggregate concrete, and without thick bone
Material is applied to breakwater engineering in Reef in Chinese South Sea there is no need to conserve that very high intensity just can be formed under autoclaved condition
With piece of smooth land road engineering.
It is less for the research achievement of seawater aggregate concrete at present, it is concentrated mainly on preparation process, mechanical property, function
Characteristic etc..The exploitation of other construction materials such as brick setting is carried out based on seawater aggregate concrete and application is before making the present invention sky
It is white.Invent such a brick setting can substantially reduce islands and reefs area build masonry concrete building cost, be allowed to it is lower at
There is very high feasibility under this.
The specification and intensity of seawater aggregate concrete brick are the keys promoted and applied.Building module should be met
With the requirement of strength specification, it is suitble to build the habit of worker's one-handed performance again, and does not increase labor intensity excessively, also has
Conducive to improving labor efficiency.It is pointed out in " materials for wall term " (GB/T18968-2003), the people for construction structure or component
Making small-sized bulk can be described as brick, and length is not more than 365mm, and width is not more than 240mm, highly be not more than 115mm.Therefore big
After measuring experimental demonstration, use SAP volume fraction for 25% proportion, manufactured size is 240mm × 115mm × 53mm brick.
After measured by brick of this proportion production, resistance to compression average value is 28.99MPa, flexural strength 4.58MPa, and the hole ratio of brick is
20.1%, moisture content 7.3%, water absorption rate 15.4%, density 1467kg/m3.The mechanical property of this brick is significantly better than
Traditional clay brick and common steam pressure concrete brick, because the compression strength of traditional brick is generally 5~15MPa, seawater gathers materials mixed
Cob brick is coagulated by as many as 2~5 times of strength enhancing.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of Novel free steam pressure concrete brick and its binders.
The invention is realized in this way a kind of Novel free steam pressure concrete brick, the Novel free steam pressure concrete brick is by one
Kind new concrete, i.e. seawater aggregate concrete；This concrete by 1 component cement (ordinary portland cement, aluminium sulfate water
The mixture of mud), the seawater of 0.26~0.30 component, the river sand or coral sand of 0.94~0.98 component, 0.25~0.45 group
The saturation SAP divided, the polypropylene fibre of 0.0024~0.0030 component, the compounding additive composition of 0.058~0.064 component；
Wherein, the volume fraction of SAP is 15%~35%.
It is described novel another object of the present invention is to provide a kind of preparation method of Novel free steam pressure concrete brick
It is non-evaporating pressure concrete brick preparation method include:
The first step, metering and loading materials have above-described match ratio, claim cement, additive, river sand or coral sand simultaneously respectively
Metering；Prepare salinity 3.5% artificial seawater, by partial size be 1.5~2mm drying SAP be put into artificial seawater absorb water to it is full
With.Cement is passed through the respective discharging time of control respectively by feed proportioning system and carries out ingredient, and quantitative system is added by trolley quantitative ingredient in sand
The A that unites is spare；It is spare by human metering addition quantitative system B to be saturated SAP；It is artificial fixed in advance that other additives and fiber pass through
Amount packaging is simultaneously spare；Quantitative watering system reserve is added in prepared artificial seawater.
Second step, stirring conveying, has and is stirred by preset stirring technique to raw material, concrete operations are as follows:
First it is added by ordinary portland cement, sulphate aluminium cement, river sand or coral sand, by the trolley of quantitative system A
Blender is stirred together for 60s, and siccative is uniformly mixed；The good polypropylene fibre stirring 60s of preparatory quantitative package is added；From quantitatively
The seawater that water-adding system pumping is prepared stirs 60s, makes cement mortar matrix just one-step forming；It is added and inhales from the trolley of quantitative system B
Water saturated SAP stirring, until SAP is uniformly mixed with cement mortar and stopping is stirred when mobility is moderate.So far it produces prefabricated
The concrete material that brick needs；The pre- material lift of molding will be stirred to be transported in storage hopper；
Third step, it is pre-formed, the seawater aggregate concrete mixture stirred evenly in storage hopper loading is coated in advance
Release agent is one by one in grid size 240mm × 115mm × 53mm die trial, molding of moderately vibrating, and is pressed into hexahedron；
4th step demoulds pile, is removed from the mold the brick in die trial after 10min, will be formed out with brick output track
Brick send to stacking machine automatic stacking, the brick on supporting plate pitched out using fork holding tool, transhipment pile arrives pile region, operates
Labour workload is small；Pile and maintenance are the ancillary equipment and artificial progress of this equipment.
It is described viscous another object of the present invention is to provide a kind of binder that the Novel free steam pressure concrete brick uses
It ties agent and combines organic polyurethane and inorganic silicic acid salt cement, mixed and stirred with seawater, portland cement is added in glue and is ground through nanometer
The nano-scale particle that grinding machine is levigate, wherein the mass ratio of inorganic fillers and organic matter substrate is 20%~33%.
Further, the binder adhesive layer thickness 2-3mm, draw cut and paste knotting strength >=1.5MPa, pull off adhesion strength >=
1.0MPa, compression strength >=8.0MPa, shrinkage value≤1.0mm/m, 50 freezing-thawing strength damage≤2.0% are bonded curing time
1h-5h is adjustable.
Another object of the present invention is to provide a kind of preparation method of binder, the preparation methods of the binder
Include:
It is chemically synthesized in use for laboratory.A series of polycarbonate glycol (PCDL) is prepared for using pre-polymer process
Type aqueous polyurethane (WPU) adhesive.Its synthetic method is as follows: being added to by PCDL and containing sulfonic polyester-diol equipped with machine
In the four-hole boiling flask of tool blender, thermometer and reflux condensing tube, it is lower than in 100~120 DEG C of vacuum dehydration to water content
0.5%；When the isocyanates and solvent acetone of metering being then added under the conditions of 50~60 DEG C, and maintaining one section of this thermotonus
Between after, 1,2- dihydromethyl propionic acid (DMPA) and 1,4-butanediol (BDO) is added, and the reaction was continued；To in reaction solution-NCO content with
It when design value is consistent substantially, is added in TEA and carboxyl, distilled water is added later and stir progress emulsion dispersion strongly, and second is added
The further chain extension of diamines；Finally, removed under reduced pressure acetone, obtains PCDL type WPU emulsion adhesive；
Second step, the preparation of nano inorganic filler are extracted the hydrated product of cement from cement, then pass through ultra-fine ball milling
Machine is levigate to be process；
Nano inorganic filler is pressed and mixes organic resin by 20%~33% mass ratio by third step, the preparation of compound adhesive
Glue, blender stir 30s -60s, stir evenly.
In conclusion advantages of the present invention and good effect are as follows: present invention firstly provides a kind of Novel free steam pressure coagulations
Cob brick --- feature, index and the preparation method of seawater aggregate concrete brick, for islands and reefs engineering brick setting construct provide compared with
Economic feasible program；A kind of slim adhesive special is developed, the thickness of the adhesive layer (i.e. mortar joint) of brick setting is reduced, from
And mortar is reduced, realize that islands and reefs engineered building materials transport secondary decrement, further decrease the cost of islands and reefs engineering construction.
The present invention is further modified selected binding material according to the particularity of marine environment and islands and reefs engineering,
To reach required conditional indicator and good cementitiousness；Organic material and inorganic material are combined, is produced a kind of water-soluble
Agent glue can be mixed and stirred with seawater, and the levigate nano particle of inorganic material is added in glue, plays the increasing to glue adhesive layer
Strong toughening effect, and the elasticity modulus of material is improved, overcome organic cementing agent elasticity modulus to compare with concrete brick lower, leads
Load or the inconsistent defect of the lower deformation of temperature stress effect are caused, the compatibility of deformation ability and shock resistance of masonry are enhanced.
Seawater aggregate concrete of the invention is the spherical high-performance water-absorbing resin for being 15~18 using water absorbent rate
(SuperAbsorbentPolymer, SAP) adsorbing seawater forms expansion aggregate, then admixes the materials such as cement according to a certain ratio, benefit
The new concrete made of seawater mix can be reduced significantly for the transport of islands and reefs engineered building materials.Seawater aggregate concrete
With the characteristics such as low-density, low elastic modulus, porous, elasticity modulus is low compared with conventional concrete, and suitable with common brick.This hair
Bright to use SAP volume fraction for 15%~35% proportion, manufactured size is 240mm × 115mm × 53mm brick.Through detecting
Center measurement, by the brick of this proportion production, resistance to compression average value is 28.99MPa, flexural strength 4.58MPa, the hole ratio of brick
It is 20.1%, moisture content 7.3%, water absorption rate 15.4%, density 1467kg/m3.Seawater made of the present invention gathers materials mixed
Solidifying cob brick, intensity discreteness is small, and practical bend-press ratio is 0.16, lower than the Criterion restriction of steam pressure common brick and porous brick, Ke Yizuo
For the use of load-bearing bulk.
The present invention is inventing a kind of Novel free steam pressure concrete brick --- i.e. while seawater aggregate concrete brick, develops
A kind of slim adhesive special, it is possible to reduce the thickness of the adhesive layer (i.e. mortar joint) of masonry realizes island to reduce mortar
Reef engineered building materials transport secondary decrement.This binder is compounded with organic material and inorganic material, is dissolved in after aqueous solvent, can
To be regarded as a kind of novel glue.This glue can be mixed and stirred directly with seawater under conditions of not changing component.It is added in glue
After levigate nano grade inorganic composition granule, it can play the role of to colloid (i.e. adhesive layer) activeness and quietness, and improve
The elasticity modulus of material entirety.The present invention overcomes organic cementing agent elasticity modulus it is relatively low caused by: brick and mortar joint are outside
Load or the inconsistent defect of the lower deformation of temperature stress effect, enhance the compatibility of deformation ability and shock resistance of masonry.
Binder of the invention realizes following index: adhesive layer thickness 2-3mm, draws cut and paste knotting strength >=1.5MPa, and it is strong to pull off bonding
Degree >=1.0MPa, compression strength >=8.0MPa, shrinkage value≤1.0mm/m, 50 freezing-thawing strength damage≤2.0%, bonding solidification
Time, 1h-5h was adjustable.
Detailed description of the invention
Fig. 1 is the preparation method flow chart of Novel free steam pressure concrete brick provided in an embodiment of the present invention.
Fig. 2 is the preparation method process of Novel free steam pressure concrete brick masonry adhesive special provided in an embodiment of the present invention
Figure.
Fig. 3 is the schematic diagram of adhesive special construction technology provided in an embodiment of the present invention.
Fig. 4 is seawater aggregate concrete preparation flow figure provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
A kind of new concrete of Novel free steam pressure concrete brick provided in an embodiment of the present invention, i.e. seawater aggregate concrete.
Cement (mixture of ordinary portland cement, sulphate aluminium cement) of this concrete by 1 component, the sea of 0.26~0.30 component
Water, the river sand or coral sand of 0.94~0.98 component, the saturation SAP of 0.25~0.45 component, 0.0024~0.0030 component
Polypropylene fibre, 0.058~0.064 component compounding additive composition；Wherein, the volume fraction of SAP is 15%~35%.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, the preparation method of Novel free steam pressure concrete brick provided in an embodiment of the present invention includes:
1. metering and loading materials
With being added cement, additive, river sand (or coral sand) and seawater by setting match ratio and measured.Water in this system
Mud and saturation SAP are passed through the respective discharging time of control respectively by feed proportioning system and carry out ingredient, and for sand by trolley quantitative ingredient, other are logical
Cross manual type metering and feeding.
2. stirring conveying
With being stirred by preset stirring technique to raw material, the concrete material (one of preformed bricks needs is produced
The concrete mix of kind dry).The pre- material lift of molding will be stirred to be transported in storage hopper.
3. pre-formed
Using the steel die for meeting national sector standard specification, material is allowed to enter mould, jolt ramming, be pressed into hexahedron, process
In to consider that material enters the control of modulus and suppresses closely knit, guarantee that six faces all smooth and beautiful appearance, corner angle are complete.
4. demoulding pile
Brick output track send the brick to form out to stacking machine automatic stacking, is pitched the brick on supporting plate using fork holding tool
Out, it is small to operate labour workload to pile region for transhipment pile.Pile and maintenance be this equipment ancillary equipment and manually into
Row.
Novel free steam pressure concrete brick masonry adhesive special provided in an embodiment of the present invention.
As shown in Fig. 2, the preparation method of Novel free steam pressure concrete brick binder provided in an embodiment of the present invention includes:
1. the preparation of organic resin glue
By being chemically synthesized in use for laboratory.And according to needed for engineering, add a certain proportion of water dissolved, it is dilute
It releases.
2. the preparation of nano inorganic filler
Such nano inorganic filler is to be extracted the hydrated product of cement in laboratory, is processed by ultra-fine ball mill
At.
3. the preparation of compound adhesive
Nano inorganic filler is mixed to organic resin glue by a certain percentage, blender stirs 30s -60s, stirs evenly i.e.
It can.
As shown in figure 3, the schematic diagram of adhesive special construction technology provided in an embodiment of the present invention.
Application principle of the invention is explained in detail combined with specific embodiments below.
In certain the province warehouse Yao Ling camp gate improvement project, a collection of seawater aggregate concrete brick is used, brick is by seawater
Aggregate concrete brick preparation system produced on-site, raw material are spherical water-absorbent swollen resin, cement, sand and compounding additive.?
It is found in application process, seawater aggregate concrete brick and production system have the following characteristics that
1. production system can realize automatic charging, stirring, forming and pile according to the ratio, high production efficiency, brick is not required to secondary
Processing, it is a large amount of to save manually, 800 pieces of seawater aggregate concrete brick can be produced per hour.
2. seawater aggregate concrete brick size is identical as clay brick, geometric identity is good, meets and builds modulus requirement,
Without losing fangle or obvious crackle.
3. seawater aggregate concrete brick density is lower with respect to clay brick, watering is not needed before masonry and is moistened, be suitable for common
Two kinds of masonry engineering methods of mortar bonding and adhesive special, adhesion strength is high, and construction is simple is convenient.
4. seawater aggregate concrete brick setting intensity meets design requirement, appearance edge it is linear it is straight it is suitable, outer surface is smooth, make
With between brick after adhesive special, brick and ceramic tile be firmly bonded.
Novel free steam pressure concrete brick provided in an embodiment of the present invention, it is non-evaporating pressure, lightweight, high-strength, it can use seawater and mix
With not needing coarse aggregate can prepare in batches.Novel free steam pressure concrete brick can be used as bearing bricks apply it is inclined in sea island reef etc.
The architectural engineering in remote area uses.
The present invention forms expansion aggregate using the spherical high-performance water-absorbing resin adsorbing seawater that water absorbent rate is 15~18, then
Admix the materials such as cement according to a certain ratio, then plus seawater mix made of new concrete, can be islands and reefs engineered building materials
Transport is reduced significantly.The present invention using 15%~35% volume fraction SAP proportion, manufactured size be 240mm × 115mm ×
The brick of 53mm.It is measured through authoritative inspection center, by the brick of this proportion production, resistance to compression average value is 28.99MPa, anti-folding is strong
Degree is 4.58MPa, and the hole ratio of brick is 20.1%, moisture content 7.3%, water absorption rate 15.4%, density 1467kg/m3。
Seawater aggregate concrete brick in the present invention, intensity discreteness is small, and practical bend-press ratio is low, can be used as the use of load-bearing bulk.It is viscous
After tying agent solidification, adhesive layer thickness 2-3mm draws cut and paste knotting strength >=1.5MPa, pulls off adhesion strength >=1.0MPa, compression strength
>=8.0MPa, shrinkage value≤1.0mm/m, 50 freezing-thawing strength damage≤2.0%, bonding curing time are 1h-5h, and adjustable.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of Novel free steam pressure concrete brick, which is characterized in that the Novel free steam pressure concrete brick is by concrete and seawater
Aggregate concrete composition；
The concrete by the cement of 1 component, the seawater of 0.26~0.30 component, 0.94~0.98 component river sand or coral
Sand, the saturation SAP of 0.25~0.45 component, 0.0024~0.0030 component polypropylene fibre and 0.058~0.064 component
Compound additive composition；The volume fraction of SAP is 15%~35%.
2. Novel free steam pressure concrete brick as described in claim 1, which is characterized in that the Novel free steam pressure concrete brick
Cement is the mixture of portland cement, sulphate aluminium cement.
3. a kind of preparation method of Novel free steam pressure concrete brick as described in claim 1, which is characterized in that described novel non-evaporating
Pressure concrete brick preparation method include:
The first step, metering and loading materials claim cement, additive, river sand or coral sand respectively and measure；Prepare the artificial of salinity 3.5%
The drying SAP that partial size is 1.5~2mm is put into artificial seawater and absorbs water to saturation by seawater；Cement is passed through respectively by feed proportioning system
It controls respective discharging time and carries out ingredient, it is spare that quantitative system A is added by trolley quantitative ingredient in sand；Saturation SAP is by manually counting
It is spare that quantitative system B is added in amount；Other additives and fiber pass through artificial quantitative package in advance and spare；It is prepared artificial
Quantitative watering system reserve is added in seawater；
Second step, stirring conveying, is stirred raw material；Concrete operations are as follows:
First it is total to by portland cement, sulphate aluminium cement, river sand or coral sand, by the trolley addition blender of quantitative system A
With stirring 60s, siccative is uniformly mixed；The good polypropylene fibre stirring 60s of preparatory quantitative package is added；From quantitative watering system
The seawater that pumping is prepared stirs 60s, makes cement mortar matrix just one-step forming；It is water saturated that suction is added from the trolley of quantitative system B
SAP stirring, until SAP is uniformly mixed with cement mortar and stopping is stirred when mobility is moderate；Produce the coagulation of preformed bricks needs
Soil material；The pre- material lift of molding will be stirred to be transported in storage hopper；
Third step, it is pre-formed, the seawater aggregate concrete mixture stirred evenly in storage hopper is packed into and is coated with demoulding in advance
Agent is one by one in grid size 240mm × 115mm × 53mm die trial, molding of moderately vibrating, and is pressed into hexahedron；
4th step demoulds pile, is removed from the mold the brick in die trial after 10min, the brick that will be formed out with brick output track
It send to stacking machine automatic stacking, is pitched out the brick on supporting plate using fork holding tool, transhipment pile to pile region.
4. a kind of binder that Novel free steam pressure concrete brick as described in claim 1 uses, which is characterized in that the binder
It in conjunction with organic material and inorganic material, is mixed and stirred with seawater, the levigate nano particle of inorganic material is added in glue.
5. binder as claimed in claim 4, which is characterized in that the binder adhesive layer thickness 2-3mm draws cut and paste knot strong
Degree >=1.5MPa pulls off adhesion strength >=1.0MPa, compression strength >=8.0MPa, shrinkage value≤1.0mm/m, 50 freeze thawing intensity
Loss≤2.0%, bonding curing time 1h-5h is adjustable.
6. a kind of preparation method of binder as claimed in claim 4, which is characterized in that the preparation method packet of the binder
It includes:
The first step, the preparation of organic resin glue are chemically synthesized in use for laboratory；Poly- carbonic acid is prepared using pre-polymer process
Esterdiol PCDL type aqueous polyurethane WPU adhesive；Its synthetic method is as follows: being added by PCDL and containing sulfonic polyester-diol
Into the four-hole boiling flask equipped with mechanical agitator, thermometer and reflux condensing tube, in 100~120 DEG C of vacuum dehydrations to water content
Lower than 0.5%；Then the isocyanates and solvent acetone of metering are added under the conditions of 50~60 DEG C, and maintains this thermotonus,
1,2- dihydromethyl propionic acid DMPA and 1,4-butanediol BDO is added, and the reaction was continued；To in reaction solution-NCO content and design value base
It when being originally consistent, is added in TEA and carboxyl, distilled water is added later and stir progress emulsion dispersion strongly, and ethylenediamine is added into one
Walk chain extension；Finally, removed under reduced pressure acetone, obtains PCDL type WPU emulsion adhesive；
Second step, the preparation of nano inorganic filler are extracted the hydrated product of cement from cement, then are ground by ultra-fine ball mill
Fining-off forms；
Nano inorganic filler is mixed organic resin glue by 20%~33% mass ratio by third step, the preparation of compound adhesive, and use is small
Type laboratory blender stirs 30s -60s, stirs evenly.
Priority Applications (1)
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| CN113045279A (en) * | 2021-02-26 | 2021-06-29 | 海南广胜新型建材有限公司 | Autoclaved sand-lime brick and preparation method thereof |
| CN114988757A (en) * | 2022-05-31 | 2022-09-02 | 山东镁嘉图新型材料科技有限公司 | Thermal insulation structure integrated disassembly-free external template modifier |
| CN115572181A (en) * | 2022-10-21 | 2023-01-06 | 中铁第四勘察设计院集团有限公司 | Brittle concrete material, preparation method and application thereof |
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| CN113045279A (en) * | 2021-02-26 | 2021-06-29 | 海南广胜新型建材有限公司 | Autoclaved sand-lime brick and preparation method thereof |
| CN114988757A (en) * | 2022-05-31 | 2022-09-02 | 山东镁嘉图新型材料科技有限公司 | Thermal insulation structure integrated disassembly-free external template modifier |
| CN115572181A (en) * | 2022-10-21 | 2023-01-06 | 中铁第四勘察设计院集团有限公司 | Brittle concrete material, preparation method and application thereof |
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Application publication date: 20190723 |