CN110158850A - Assembled light concrete self-insulating combined wall board and preparation method thereof - Google Patents

Assembled light concrete self-insulating combined wall board and preparation method thereof Download PDF

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Publication number
CN110158850A
CN110158850A CN201910501052.XA CN201910501052A CN110158850A CN 110158850 A CN110158850 A CN 110158850A CN 201910501052 A CN201910501052 A CN 201910501052A CN 110158850 A CN110158850 A CN 110158850A
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CN
China
Prior art keywords
assembled light
combined wall
wall board
insulating combined
haydite
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Pending
Application number
CN201910501052.XA
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Chinese (zh)
Inventor
张云法
孙樟
马剑
张育诚
李大旺
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Jiangsu De Feng Construction Group Co Ltd
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Jiangsu De Feng Construction Group Co Ltd
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Priority to CN201910501052.XA priority Critical patent/CN110158850A/en
Publication of CN110158850A publication Critical patent/CN110158850A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/10Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/049Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres completely or partially of insulating material, e.g. cellular concrete or foamed plaster
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/38Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels
    • E04C2/384Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels with a metal frame

Abstract

Present invention discloses a kind of assembled light concrete self-insulating combined wall boards, comprising: the lightgage steel joist as frame;As the pressure plare of clad can, wall cavity is surrounded between the pressure plare and lightgage steel joist;And it is filled in the foam concrete in the wall cavity.Present invention further teaches a kind of production methods of assembled light concrete self-insulating combined wall board.Wall of the invention has the characteristics that small thickness, antidetonation, sound insulation, durable, light, heat preservation, standardized production, on-site assembly, speed of application fast, architectural plane and facade combination are flexible, and wall cost is low, production energy consumption is low, fire protecting performance and compression strength are all good, the requirement and fire protection requirement that each climatic province building energy conservation can be met comply fully with building heat preservation and develop to the direction that fireproofing heat preservation develops.

Description

Assembled light concrete self-insulating combined wall board and preparation method thereof
Technical field
The invention belongs to prefabrication technical fields, and in particular to a kind of assembled light concrete self-insulating is multiple Close wallboard and preparation method thereof.
Background technique
Prefabricated wall panels are the important component in prefabrication system, including load-bearing and non-bearing dry wall Two class of plate, wallboard thickness can be determined according to structure and energy-saving design.The technology can realize precast concrete exterior wall to the maximum extent Load-bearing, the system compositions of performances such as go along with sb. to guard him, keep the temperature, decorating.Currently, prefabricated wall panels technology is related to heat preservation technology, one Body decoration technique, water proof anti-seepage technology and site operation and production technology.
It includes the problems such as thickness is big, compression strength is low that the prior art, which is primarily present problem,.
How the assembled light concrete self-insulating combined wall board that a kind of thickness is small, compression strength is high is provided, is one Urgent problem.
Summary of the invention
One embodiment of the invention provides a kind of assembled light concrete self-insulating combined wall board and preparation method thereof, is used for Solve the problems, such as that wallboard thickness is big in the prior art, compression strength is low, comprising:
In one embodiment, a kind of assembled light concrete self-insulating combined wall board is disclosed, comprising:
Lightgage steel joist as frame;
As the pressure plare of clad can, wall cavity is surrounded between the pressure plare and lightgage steel joist;
And it is filled in the foam concrete in the wall cavity.
In another embodiment, a kind of disclose assembled light concrete self-insulating combined wall board production method, comprising:
Pressure plare is covered in lightgage steel joist surface to be fixed;
Prepare foam concrete;
Concreting is surrounded in wall cavity between pressure plare and lightgage steel joist.
In a preferred embodiment, in the raw material of foam concrete include cement, haydite, flyash and foaming agent,
Wherein, the quality accounting of haydite is 10%~40%, preferably 10%~20%;
The quality accounting of flyash is 10%~25%, preferably 10%~15%.
In a preferred embodiment, in foam concrete, the ratio of mud is 0.4~0.5.
Compared with prior art, wall of the invention has small thickness, antidetonation, sound insulation, durable, light, heat preservation, standardization The features such as production, on-site assembly, speed of application are fastly, architectural plane and facade combination are flexible, and wall cost is low, production energy consumption Low, fire protecting performance and compression strength are all good, can meet the requirement and fire protection requirement of each climatic province building energy conservation, comply fully with building It keeps the temperature to the direction that fireproofing heat preservation develops and develops.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts, It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of assembled light concrete self-insulating combined wall board in one embodiment of the application;
Fig. 2 is influence (7d) of the haydite volume to compression strength in the application embodiment;
Fig. 3 is influence (7d) of the ratio of mud to compression strength in the application embodiment;
Fig. 4 is influence (7d) of the doping quantity of fly ash to compression strength in the application embodiment;
Fig. 5 is influence (28d) of the haydite volume to compression strength in the application embodiment;
Fig. 6 is influence (28d) of the ratio of mud to compression strength in the application embodiment;
Fig. 7 is influence (28d) of the doping quantity of fly ash to compression strength in the application embodiment.
Specific embodiment
The present invention will be more fully appreciated by the following specific embodiments that should be read together with institute's accompanying drawings.Herein It is middle to disclose specific embodiment of the invention;However, it should be understood that revealed embodiment only has demonstration of the invention, the present invention It can embody in a variety of manners.Therefore, specific function details disclosed herein is not interpreted as limiting, but only It is construed to the basis of claims and is construed to for teaching those skilled in the art in fact any appropriate detailed Representative basis of the invention is used in embodiment in different ways.
As shown in connection with fig. 1, in the embodiment of the application, a kind of assembled light concrete self-insulating composite wall is provided Plate surrounds wall between pressure plare 2 and lightgage steel joist 1 including the lightgage steel joist 1 as frame and as the pressure plare 2 of clad can Cavity, wall cavity are filled with foam concrete 3.
In one embodiment, lightgage steel joist is made of cold bending thin wall C-shaped steel.
Cold-rolled forming section is the type using hot rolling or cold-strip steel as blank through various cross sectional shapes size made of brake forming Steel.Cold-rolled forming section saves metal 38-50% than hot-rolled steel section for building structure, can save gold for agricultural machinery and vehicle Belong to 15-60%.Facilitate construction, reduces comprehensive cost.
In one embodiment, pressure plare uses fiber cement board pressure.
Preferably, fiber cement board pressure uses chrysotile asbestos fibre cement pressure plate, main material fibers (serpentine stone Cotton), cement (portland cement), silicon powder and other additional materials, using special production technology, by slurrying, copy take, ten thousand The pressurization of ton press, four curing procedures and the cement board for building produced.
It in one embodiment, include cement, regenerated coarse aggregate, natural coarse aggregate, haydite, hair in the raw material of foam concrete Infusion, fine aggregate, water, flyash and additive.
In a preferred embodiment, the quality accounting of haydite is 10%~40%, preferably 10%~20%;The grain of haydite Diameter range is in 10mm~30mm.
The quality accounting of flyash is 10%~25%, preferably 10%~15%.
Flyash, is the fine ash that catching is got off from the flue gas after coal combustion, and flyash is the main of coal-burning power plant's discharge Solid waste.Flyash can be used as the admixture of concrete.
In a preferred embodiment, regenerated coarse aggregate quality accounting is 5-20%, and natural coarse aggregate quality accounting is 5- 25%, foaming agent quality accounting is 0.1-1.5%, and fine aggregate quality accounting is 10-30%, water quality accounting 2-15%, additional Agent quality accounting is 0.05-0.2%.
In a preferred embodiment, cement uses 42.5 grades of ordinary portland cements.Cement quality accounting is 5-25%.
It should be noted that cement in technical solution of the present invention, including but not limited to portland cement or other mixing waters Mud etc..Wherein portland cement, including but not limited to low-heat portland cement, ordinary portland cement, early strength silicate cement, Super hardening portland cement, moderate-heat portland cement, sulfate resisting Portland cement etc..In addition, blended cement, including but it is unlimited In blast-furance cement, silica cement, pulverized fuel ash cement etc..As cement, portland cement is preferred, wherein normal silicate Cement, moderate-heat portland cement or low-heat portland cement are preferred.The label of cement is the index of cement " intensity ".Cement Intensity be to indicate the size of unit area stress, the solid degree (water after referring to that cement plus water mixes and stirs, after being condensed, being hardened Add the ratio of water in temperature, humidity and cement when the intensity of mud and the mineralogical composition, grain fineness, hardening of composition cement Etc. factors it is related).42.5 ordinary portland cement of PO is the ordinary portland cement that strength grade is 42.5.
Aggregate can enumerate coarse aggregate and fine aggregate.Here, coarse aggregate of the addition as aggregate in self-compacting concrete And fine aggregate.As coarse aggregate, river gravel, sea gravel, mountain gravel, rubble, slag rubble etc. can be enumerated, as fine aggregate, River sand, sea sand, mountain sand etc. can be enumerated.In addition, coarse aggregate and fine aggregate can be distinguished according to common classification (screening etc.).
In addition, in this concrete, from the viewpoint of obtaining sufficient intensity, every 1m3The concrete is preferably 700 ~1000kg, more preferable 800~900kg, in addition, the every 1m of the content of coarse aggregate3Concrete is preferably 800~1100kg, more excellent It is selected as 850~950kg.This concrete can for example obtain in the following way: cement additive, flyash are added to water In mud, cement composition is formed, then water and aggregate are added in the cement composition and mixed, thus to obtain.However, by It, therefore, can be when prepared by concrete as long as containing above-mentioned cement additive in its composition in concrete of the invention Addition.The fine aggregate is middle sand, and the additive is polycarboxylate water-reducer, and the cement is PO42.5 normal silicate water Mud, the flyash are I grades of flyash.
Concrete admixture is mixed during ready-mixed concrete, and it is below to account for cement quality 5%, can be significantly improved mixed Solidifying soil nature energy.Preferably, concrete admixture is water-reducing agent.As water-reducing agent, can apply without limitation water-reducing agent, AE water-reducing agent, high-performance water reducing agent, high performance AF dehumidifying agent etc. are as material well known to water-reducing agent used in concrete.It is more The water-reducing agent of first carboxylic serials is preferred.Content of the water-reducing agent in cement composition is preferably 0.8~3.0 mass %.In addition, Water-reducing agent can contain not as cement additive, but the addition when preparing concrete.
High-performance water reducing agent, including but not limited to naphthalene series high-efficiency water-reducing agent, high-efficiency water-reducing agent of poly-carboxylic acid and aliphatic high-efficiency Water-reducing agent.Wherein naphthalene series high-efficiency water-reducing agent is naphthalenesulfonate formaldehyde condensation compound.Aliphatic high-efficiency water reducing agent is acetone sulfonation synthesis Carbonyl coke aldehyde.Polycarboxylate water-reducer (Polycarboxylate Superplasticizer) is a kind of high-performance water reducing agent, It is one of cement concrete utilization cement dispersants, can be chemically divided into two classes, using main chain as methacrylic acid, side chain For carboxylic acid group and MPEG (Methoxy polyethylene glycol), polyester type structure.Another is that main chain is poly- third Olefin(e) acid, side chain are Vinyl alcohol polyethylene glycol, polyether-type structure.
Aggregate plays the granular loose material of skeleton or filling effect in concrete.Aggregate is as the master in concrete Raw material is wanted, plays skeleton and supporting role between floors.Aggregate of the partial size greater than 4.75mm is known as coarse aggregate, is commonly called as stone.It is common Have rubble and two kinds of cobble.Rubble be natural rock or rock through Mechanical Crushing, be sieved into, partial size is greater than 4.75mm Rock particles.Cobble is as made of weathering, potamic transport and sorting, accumulation, rock particles of the partial size greater than 4.75mm. 2.4 times of persons of average grain diameter that the length of cobble and gravel particle is greater than corresponding grade belonging to the particle are elongated piece;Thickness is small In 0.4 times of person of average grain diameter be sheet-like particle (average value that average grain diameter refers to the grade superior and inferior limit of particle size).Cobble for building, Rubble should meet the technical requirements of standard GB/T/T 14685-2001 " for building cobble, rubble ".Partial size 4.75mm or less Aggregate be known as fine aggregate, be commonly called as sand.Sand is divided into natural sand, two class of artificial sand by production source.Natural sand is by weathering, water flow It carries and sorts, accumulate the rock particles that formed, partial size is less than 4.75mm, but do not include the particle of soft rockmass, decayed rock. Natural sand includes river sand, lake sand, mountain sand and desalted sea sand.Artificial sand is the general designation through Machine-made Sand, mixed sand except soil processing.
The natural coarse aggregate of the present embodiment is general common coarse aggregate;And regenerated coarse aggregate be will be in building waste Discarded concrete is sorted, broken and screening, after removal is less than 9.50mm and particle greater than 20mm, the aggregate grain be processed into Partial size section of the diameter range in 10~20mm.
In one embodiment, a kind of production method of assembled light concrete self-insulating combined wall board, feature are also provided It is, comprising:
Pressure plare is covered in lightgage steel joist surface to be fixed;
Prepare foam concrete;
Concreting is surrounded in wall cavity between pressure plare and lightgage steel joist.
In one embodiment, the ratio of mud in foam concrete is 0.4~0.5.
In one preferred embodiment, the haydite volume in foam concrete is 10%, the ratio of mud 0.5, and doping quantity of fly ash is 15%.Corresponding 28d compression strength reaches 8.07MPa, and 7d resistance to compression degree reaches 3.81MPa.
In one preferred embodiment, the haydite volume in foam concrete is 20%, the ratio of mud 0.2, and doping quantity of fly ash is 15%.Corresponding 28d compression strength reaches 7.81MPa, and 7d resistance to compression degree reaches 3.57MPa.
In one preferred embodiment, the haydite volume in foam concrete is 40%, the ratio of mud 0.3, and doping quantity of fly ash is 15%.Corresponding 28d compression strength reaches 7.71MPa, and 7d resistance to compression degree reaches 3.74MPa.
Specific experiment process and detection data below by way of foam concrete is to verify the performances such as its compression strength.
Embodiment 1-20
(1) raw material that embodiment uses:
Cement: PO42.5 ordinary portland cement, apparent density 3.10g/cm3.The intensity of ceramsite foam concrete Intensity effect by cement is larger, therefore selects suitable cement particularly important.Other than national standard to be met, should also have Higher intensity, rate of set are very fast, must not contain the features such as ingredient of damage foam stability.Comprehensively consider, the present embodiment Using 42.5 grades of ordinary portland cements.
Flyash: 1 grade of flyash, apparent density 2.04g/cm3.Flyash is gathered around as thermal power plant's key industry waste Have and physical property, chemical component similar in clay material.Simultaneously as green new energy, it can not only alleviate environment pressure Power reduces the dosage of cement instead of cement to a certain extent, it is often more important that can such as improve work to material modification Performance, adjusting strength, raising corrosion resistance etc..
Sand: the middle sand that fineness modulus is 2.36, apparent density 2.65g/cm3, bulk density 1.45g/cm3, moisture content It is 0.4%.
Natural coarse aggregate: the rubble of 5~20mm continuous size fraction, apparent density 2.75g/cm3, bulk density 1.35g/ cm3, water absorption rate 0.45%.
Regenerated coarse aggregate: it by the discarded concrete in building waste by sorting, broken and screening, screens out less than 9.50mm After the particle greater than 20mm, regenerated coarse aggregate is processed into 10mm~20mm partial size section with aggregate size, apparent density is 2.35g/cm3, bulk density 1.23g/cm3, water absorption rate 4.76%.
Haydite, as main lightweight aggregate, the haydite as ceramsite foam concrete will have lower density, lower The features such as thermal conductivity, lower water absorption rate and smooth no significant defect in haydite surface.The haydite property that the present invention selects such as table 1 It is shown.
1 haydite performance indicator of table
Foaming agent, which refers to, can reduce surface tension of liquid, generate a large amount of uniform and stable foams, mixed for producing foam Coagulate the additive of soil.The foaming agent that this experiment is selected is dry powder-shaped, stirs and uses after needing to be watered according to the ratio of 1:30. Mixed liquor after being watered is white, stirs out the foam for carrying out a large amount of white flocks, density 25kg/m3, ph value 6.0~ 8.0。
Additive: high-efficiency water-reducing agent of poly-carboxylic acid.
Water: tap water.
(2) it to prevent viscous pot, weighs that each material is appropriate, and mixing concrete, machine inner wall to be mixed is stained with cement mortar, takes out Fresh concrete, by match ratio weigh cement, regenerated coarse aggregate, natural coarse aggregate, haydite, foaming agent, fine aggregate, flyash and Additive feeds intake according to the sequence of cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, haydite, water, flyash and additive Then start blender, stir 30~150s, foaming agent stirring 30-200min is added then to get the lightweight self-compaction Concrete.
Specifically, can be first by load weighted cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, haydite, water, powder Coal ash and additive pour into blender stirring 60s, then stir foaming agent with blender, when there is cotton-shaped big of similar cotton Stop stirring when measuring foam, foam is poured into blender, be subsequently poured into tap water, stir 120s, Cheng Mo, standing is torn open afterwards for 24 hours Mould is put into standard curing room and is conserved, to age regulation phase after take out test block tested.Certainly according to JGJ/T283-2012 Air-free concrete application technology regulation regulation is tested.
Examples 1 to 4 lightweight mix parameters of high-strength self-compacting concrete is as follows:
2 lightweight mix parameters of high-strength self-compacting concrete of table
Test result is as shown in table 3.
The test result of 3 lightweight self-compacting concrete of table
Embodiment 5-20
Embodiment 5-20 is template with embodiment 4, and with haydite volume, the ratio of mud and doping quantity of fly ash are used as research parameter, The dosage of other components carries out intensity test with embodiment 4, to ceramsite foam concrete test block, and exploration prepares haydite foam The optimum mix proportion of concrete.
4 lightweight mix parameters of high-strength self-compacting concrete of table
Interpretation of result
The primary and secondary sequence of test block pressure resistance intensity influence factor is: i.e. doping quantity of fly ash is to ceramsite foam concrete compression strength Maximum is influenced, haydite volume takes second place, and the ratio of mud is the smallest;7d is consistent with the conclusion that the intensity test result of 28d obtains.
According to test specimen resistance to compression as a result, analyzing each factor, the resistance to compression result of each factor takes the arithmetic of 4 numerical value Average value draws curve and sees the figure of Fig. 2~7.Fig. 2 is influence (7d) of the haydite volume to compression strength;Fig. 3 is the ratio of mud to resistance to compression The influence (7d) of intensity;Fig. 4 is influence (7d) of the doping quantity of fly ash to compression strength;Fig. 5 is haydite volume to compression strength It influences (28d);Fig. 6 is influence (28d) of the ratio of mud to compression strength;Fig. 7 is influence of the doping quantity of fly ash to compression strength (28d)。
By Fig. 2 and Fig. 4 it is known that after being mixed with haydite, ceramsite foam concrete 7d and 28d compression strength occurs A degree of decline, haydite volume is more, intensity decline it is more.Haydite itself is a kind of artificial lightweight aggregate, volume mistake More haydites will affect whole compression strength, while the incorporation of haydite can not only mitigate weight, also have heat-insulation and heat-preservation Can be superior, water absorption rate is low the features such as, therefore while preparing ceramsite foam concrete, should not mix excessive haydite.It is recommended that haydite volume Control is 20%~30%.It finds during the experiment simultaneously, when preparing ceramsite foam concrete test block, the grain of the haydite of selection Diameter should not be too large, and particle size suggestion is in 10mm~30mm.
Known to Fig. 3 and Fig. 5 when preparing ceramsite foam concrete, compression strength is 0.2~0.3 appearance in the ratio of mud A little decline has promotion 0.3~0.5 again.The ratio of mud mainly influences compression strength by influencing pore structure, in water ash When smaller, although intensity is higher, it will appear the poor problem of mobility, be unfavorable for the preparation of test specimen;In ratio of mud mistake When big, then the undesirable conditions such as haydite floating are easy to appear.It is recommended that ratio of mud control is 0.4~0.5.
Influence of the incorporation of flyash to compression strength, by Fig. 4 and Fig. 7 it is found that the intensity of ceramsite foam concrete exists Doping quantity of fly ash increased when being 10%~15%, this is because the chemical component SiO in flyash2In portland cement Primary product Ca (OH)2Secondary reaction of hydration occurs, the hydrated calcium silicate and drated calcium aluminate of generation can be used as cementitious material Play the role of increasing intensity to a certain extent.But volume is more than 15% later just as the increase intensity of volume constantly drops It is low.It is therefore proposed that doping quantity of fly ash can not only increase certain intensity 10%~15%, while it may insure flyash again Its essential effect is played when preparing ceramsite foam concrete.
(1) it should guarantee to be self-possessed small, guarantee that there is certain intensity again, therefore haydite volume should not be excessive, selection Particle size range is within the scope of 10mm~30mm.
(2) use of flyash can not only reduce cement consumption, after can also making up incorporation haydite to a certain extent The decline of intensity, it is often more important that the working performance of ceramsite foam concrete can be improved, but volume should not be excessive.
(3) ratio of mud be the key that influence foam and cement slurry whether can uniformly mix with fresh concrete workability because Element.The ratio of mud is too small, it may appear that poor fluidity is self-possessed larger, and the excessive phenomenon of foam lost: the ratio of mud is excessive, it may appear that pottery Grain floats, and fresh concrete easily isolates, the rough sledding such as foam stability decline.
(4) during exploring haydite volume, the secondary factors that the ratio of mud and doping quantity of fly ash influence compression strength, lead to Cross and obtained consistent conclusion to the test result of 7d and 28d compression strength: doping quantity of fly ash is to ceramsite foam concrete resistance to compression Intensity effect is maximum, and haydite volume takes second place, and the ratio of mud is minimum.Comprehensively consider optimum mix proportion are as follows: haydite volume 20%~30%, Doping quantity of fly ash 10%~15%, the ratio of mud 0.4~0.5.
Each aspect of the present invention, embodiment, feature and example should be regarded as to be illustrative and is not intended to limit in all respects The system present invention, the scope of the present invention are only defined by tbe claims.Without departing substantially from the spirit and scope of the present invention advocated In the case of, it will be apparent to those skilled in the art that other embodiments, modification and use.
The use of title and chapters and sections is not intended to limit the present invention in this application;Each chapters and sections can be applied to the present invention Any aspect, embodiment or feature.
Present application in the whole text in, composition is being described as have, containing or comprising in place of specific component or will Process description is in place of having, containing or comprising particular procedure step, it is contemplated that the composition of teachings of this disclosure is also substantially by institute Narration component composition is made of described component, and the process of teachings of this disclosure is also substantially made of described process steps Or it is made of described process steps group.
In this application, by element or component be known as being contained in and/or selected from described element or the component list it Place, it should be appreciated that the element or component can by described any one of element or component and can be selected from by described element or The group of the two in component or both composition described above.Furthermore, it is to be understood that in the spirit and scope without departing substantially from teachings of this disclosure In the case of, the element and/or feature of composition described herein, equipment or method can combine in various ways regardless of this Explanation is clearly stated or implied in text.
Unless otherwise specific statement, otherwise term " include (include, includes, including) ", " have The use of (have, has or having) " is it is generally understood that be open and without limitation.
Unless otherwise specific statement, otherwise the use of odd number herein includes plural (and vice versa).In addition, on unless It clearly provides additionally below, otherwise singular " one (a, an) " and " (the) " include plural form.In addition, in art The use of language " about " place before magnitude, unless otherwise specific statement, otherwise teachings of this disclosure further includes particular magnitude itself.
It should be understood that the order of each step or the order of execution specific action are not particularly significant, as long as teachings of this disclosure is protected Holding can operate.In addition, two or more steps or movement can be carried out simultaneously.
It should be understood that each figure of the invention and explanation are simplified to illustrate and be clearly understood that related member to of the invention Part, and other elements are eliminated for clarity purpose.However, those skilled in the art will realize that these and other is first Part can be desirable.However, since this class component is in this technology it is well known that and since it does not promote to of the invention It is best understood from, therefore the discussion to this class component is not provided herein.It will be appreciated that each figure is to be in for diagram illustrating property purpose Now and not as structural pattern.Institute's omissions of detail and modification or alternate embodiment are in the range of those skilled in the art.
It can be appreciated that can replace single component by multiple components in certain aspects of the present disclosure and can be replaced by single component Multiple components are changed to provide an element or structure or execute one or several given function.It will not operate in addition to substituting herein with reality Other than trampling in place of the particular embodiment of the present invention, this substitution is considered as within the scope of the invention.
Although describing the present invention with reference to an illustrative embodiment, those skilled in the art will appreciate that, it is not carrying on the back Various other changes can be made in the case where from spirit and scope of the present invention, are omitted and/or are added and can use substantial equivalents Substitute the element of the embodiment.In addition, many modifications can be made without departing substantially from the scope of the present invention so that specific Situation or material adapt to teachings of the present invention.Therefore, it is not to restrict the invention to herein for executing institute of the invention Specific embodiment is disclosed, and being intended to makes the present invention by all implementations comprising falling within the scope of the appended claims Example.In addition, removing non-specific statement, otherwise any use of term first, second etc. does not indicate any order or importance, but An element and another element are distinguished using term first, second etc..

Claims (10)

1. a kind of assembled light concrete self-insulating combined wall board characterized by comprising
Lightgage steel joist as frame;
As the pressure plare of clad can, wall cavity is surrounded between the pressure plare and lightgage steel joist;
And it is filled in the foam concrete in the wall cavity.
2. assembled light concrete self-insulating combined wall board according to claim 1, which is characterized in that the light steel dragon Bone is made of cold bending thin wall C-shaped steel.
3. assembled light concrete self-insulating combined wall board according to claim 1, which is characterized in that the pressure plare Using fiber cement board pressure.
4. assembled light concrete self-insulating combined wall board according to claim 1, which is characterized in that foam concrete Raw material in include cement, haydite, flyash and foaming agent,
Wherein, the quality accounting of haydite is 10%~40%, preferably 10%~20%;
The quality accounting of flyash is 10%~25%, preferably 10%~15%.
5. assembled light concrete self-insulating combined wall board according to claim 4, which is characterized in that the haydite Particle size range is in 10mm~30mm.
6. assembled light concrete self-insulating combined wall board according to claim 4, which is characterized in that the cement is adopted With 42.5 grades of ordinary portland cements.
7. the production method of any assembled light concrete self-insulating combined wall board of claim 1 to 6, feature exist In, comprising:
Pressure plare is covered in lightgage steel joist surface to be fixed;
Prepare foam concrete;
Concreting is surrounded in wall cavity between pressure plare and lightgage steel joist.
8. the production method of assembled light concrete self-insulating combined wall board according to claim 7, which is characterized in that In foam concrete, the ratio of mud is 0.4~0.5.
9. the production method of assembled light concrete self-insulating combined wall board according to claim 7, which is characterized in that In foam concrete, haydite volume is 10%, the ratio of mud 0.5, doping quantity of fly ash 15%.
10. the production method of assembled light concrete self-insulating combined wall board according to claim 7, feature exist In in foam concrete, haydite volume is 20%, the ratio of mud 0.2, doping quantity of fly ash 15%.
CN201910501052.XA 2019-06-11 2019-06-11 Assembled light concrete self-insulating combined wall board and preparation method thereof Pending CN110158850A (en)

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Application publication date: 20190823