CN104230280B - Low-shrinkage sludge ceramsite alkali-activated full-slag foam concrete plate and preparation method thereof - Google Patents
Low-shrinkage sludge ceramsite alkali-activated full-slag foam concrete plate and preparation method thereof Download PDFInfo
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- CN104230280B CN104230280B CN201410464809.XA CN201410464809A CN104230280B CN 104230280 B CN104230280 B CN 104230280B CN 201410464809 A CN201410464809 A CN 201410464809A CN 104230280 B CN104230280 B CN 104230280B
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Abstract
The invention discloses a low-shrinkage sludge ceramsite alkali-activated full-slag foam concrete plate and a preparation method thereof. The foam concrete plate is prepared from slag, silica fume, pulverized fuel ash, fibers, ceramsite, sodium polyacrylate SAP, water, a foaming agent, alkali activator and a water reducing agent. According to the method, cement is completely replaced by slag to prepare foam concrete, the shrinkage performance and heat conductivity coefficient of the foam concrete material can be reduced by doping ceramsite and sodium polyacrylate SAP, and the tensile strength of the foam concrete material can be guaranteed by utilizing an alkali-activated slag system and ceramsite. The prepared foam concrete plate has excellent mechanical performance and low-shrinkage self-insulation performance and is capable of solving the problems that a traditional autoclaved aerated concrete material needs high-temperature steaming and a prefabricated part made from the traditional autoclaved aerated concrete material easily cracks; in addition, the invention effectively realizes recycling of slag and other industrial wastes, saves energy, protects the environment and therefore has an important application value in the field of heat insulation of walls and the like.
Description
Technical field
The invention belongs to building material field is and in particular to a kind of full slag foam coagulation of lower shrinkage sludge ceramsite alkali-activated carbonatite
Native plate and preparation method thereof.
Background technology
Traditional autoclave aerated concrete building block is a kind of light porous materials for wall, and due to lightweight, volume is big and interior
Portion is in pore space structure and has good sound insulation, and heat insulation function, is a kind of wide variety of insulating wall material.Steam pressurized mixed
Solidifying earth building blocks form hole by foaming agent through chemical reaction, and through the preparation of the techniques such as moulding by casting, precuring cutting, steam press maintenance
Become.There are high energy consumption issues in the steaming pressuring curing process of autoclave aerated concrete building block, and the cement consumption of concrete is high, preparation
Prefabricated components easily form cracking.In addition autoclave aerated concrete building block has that intensity and heat-insulating property are difficult to take into account.Steam
As a kind of engineering material it is essential to ensure that certain intensity, and intensity improves and will lead to its thermal and insulating performance pressing aero-concrete
Decline and density increases.Therefore, study and improve other lightweights, high-strength, good heat insulating, and body of wall not easy to crack further
Insulation material, has important practical application meaning in engineering construction field.
Current air entrained concrete generally uses cement as major gelled material, and cement consumption greatly, result in sheet material
Production cost is higher, and energy consumption is larger, and the production and transport pollution of cement is also larger.This patent uses industrial residue to substitute cement work
Produce foam concrete for aquation Binder Materials, alkali-activated slag system can not only improve the comprcssive strength of foam concrete, also
The cost of production is reduced while realizing resource reutilization.But the shrinkage value of alkali-activated slag system is larger, then examines
Consider and mix ultralight sludge ceramsite to reduce the shrinkage value of foam concrete.Sludge ceramsite is to be burnt with the industrial sludge containing heavy metal
System forms, and this haydite has certain porosity, can absorb small part and divide water, can be used as maintenance in foam concrete after immersion
Material is promoting hydration reaction, you can reduce the shrinkage value of foam concrete with the intensity improving product again.Meanwhile, haydite
Heat conductivity relatively low, add in foam concrete and can play the effect of thermal resistance point, thus reducing the heat conductivity of sheet material.Dirty
Mud haydite, while carrying out property modification to foam concrete, has also carried out secondary utilization, and the process to mud to resource
Provide a kind of new solution.It is contemplated that the water absorption of sludge ceramsite is general, interior maintenance action is faint, this patent
It is mixed with polyacrylic acid sodium salt sap to promote hydration reaction as conserving material in second." the storage of polyacrylic acid sodium salt sap
Water-release water " effect alleviates the negative pressure producing inside product because moisture issues additional, thus alleviating the generation of contraction.Polypropylene
Acid sodium-salt sap can leave substantial amounts of pore after releasing water completely in foam concrete, increase the porosity of product, reduce bubble
The heat conductivity of foam concrete, simultaneously also can reduction intensity by a small margin.
Content of the invention
It is an object of the invention to provide a kind of full slag foam concrete plate of lower shrinkage sludge ceramsite alkali-activated carbonatite and its system
Preparation Method, described foam concrete plate substitutes cement completely using slag under alkali-activated carbonatite system and is prepared from, prepared foam
Concrete slab homogeneity is high, and mechanical property and endurance quality are good, and is not susceptible to ftracture.
For achieving the above object, the technical scheme is that a kind of full slag foam of lower shrinkage sludge ceramsite alkali-activated carbonatite
Concrete slab it is characterised in that main by slag, silicon ash, flyash, fiber, haydite, polyacrylic acid sodium salt sap, water, foaming
Agent, alkali-activator and water reducer are prepared from, and each component and content are: slag 400～430kg/m3, silicon ash 20～35kg/m3,
Flyash 40～65kg/m3, fiber 0.8～1.1kg/m3, haydite 50～80kg/m3, polyacrylic acid sodium salt sap 0.2～
0.3kg/m3, water 100～125kg/m3, foaming agent 1～1.2kg/m3, alkali-activator 7～8.5kg/m3, the volume of water reducer is
The 1.8～2.1% of slag, silicon ash and flyash gross mass.
According to such scheme, described slag reactivity is s105 level, and its Blain specific surface is more than 450m2/kg.
According to such scheme, described haydite is the haydite of firing sludge, takes from " 12 " silt firing ceramsite by using sludge project
The haydite of middle production, particle diameter distribution is 1～3mm, and heat conductivity is 0.13～0.14w/ (m k).The preparation of haydite: by mud,
Shared by shale powder, mass percent is: mud 30%, shale powder 70%, weighs mud and shale powder, controls mud and shale powder
In (al2o3+sio2)/(cao+mgo+na2o+fe2o3)=7.5～10, by mud and shale powder mixing granulation, particle diameter is 1～
3mm；Then through 1050～1150 DEG C of calcining 15～20min in rotary kiln, obtain density rating and be 300～500 grades, cylindrical compress strength
For 1～3mpa, water absorption rate is 10～12% ultralight sludge ceramsite.
According to such scheme, described polyacrylic acid sodium salt sap is a kind of super absorbent resin, and Water absorption is 150～200
Times.
According to such scheme, described alkali-activator is sodium silicate solution, and solid content is more than 60% (mass fraction), modulus
Compare n=1.2.
According to such scheme, described water reducer is polycarboxylic acid series high efficiency water reducing agent.
According to such scheme, described foam is compound plant protein anion surfactant gs-1, and density is
1.01kg/l, extension rate is 39, and coefficient of foaming is 20 times, and during foaming agent foam, required moisture is not included in group distribution
Than in water content in.
According to such scheme, a kind of preparation side of the full slag foam concrete plate of above-mentioned lower shrinkage sludge ceramsite alkali-activated carbonatite
Method is it is characterised in that comprise the following steps: (1) weighs raw material according to proportioning raw materials, and each component and content are: slag 400～
430kg/m3, silicon ash 20～35kg/m3, flyash 40～65kg/m3, fiber 0.8～1.1kg/m3, haydite 50～80kg/m3, gather
Acrylic acid sodium salt sap0.2～0.3kg/m3, water 100～125kg/m3, foaming agent 1～1.2kg/m3, alkali-activator 7～8.5kg/
m3, the volume of water reducer is the 1.8～2.1% of slag, silicon ash and flyash gross mass；(2) by haydite and polyacrylic acid sodium salt
Sap carries out full water process；(3) by slag, silicon ash, flyash and fiber agent be placed in concrete mixer mixing dry mixing 30～
60s, in the compound obtaining, adds and deducts the water of haydite and polyacrylic acid sodium salt sap water content, through full water-treated pottery
Grain and polyacrylic acid sodium salt sap, water reducer and alkali-activator, continue mix 240～300s, obtain mixture slurry；(4) in mixing slurry
In body, introduce the foams that foaming agent sends, be stirred 120～180s, obtain foaming slurry；(5) along pipeline, gained is foamed
Slurry pumping pours into the mold, cover film after surface evening, form removal after standing 18～24h, carries out maintenance to age, obtains described bubble
Foam concrete plate.
According to such scheme, the full water treatment steps of described haydite (or claiming mud Superlight ceramsites) include: mixing foam mixes
Before solidifying soil, more than 24h haydite is placed in cistern and carries out full water process；Before mixing concrete, 4～5h is by the water in cistern
Put net, make the free dehydration of haydite；Before mixing concrete, 1h is by the haydite mix homogeneously in haydite heap, in mixing concrete first half
Hour take at least three representative positions survey pile up in the moisture content of haydite averaging, record the water content of described haydite
For 12% about (quality).
According to such scheme, the full water treatment steps of described polyacrylic acid sodium salt sap include: before mixing foam concrete,
Add the water of 150～200 times of quality in polyacrylic acid sodium salt sap, soak 2～3h so as to fully absorb moisture, straight during use
Connect addition stirring.
According to such scheme, the minimum dimension specification of prepared foam concrete plate is 100 × 300 × 22cm, maximum chi
Very little specification is 300 × 300 × 22cm, and unit weight is 580～620kg/m3, 28d comprcssive strength is 5.0～6.0mpa, heat conductivity
≤ 0.145w/ (m k), shrinkage value ＜ 0.4mm m-1, carbonation coefficient ＜ 1.1, mass loss ＜ 3% and loss of strength after freeze thawing
＜ 5%.
The principle of the present invention is:
(1) in foam concrete, the mechanism of action of alkali-activated slag is as follows: 1) in hydrated product, produce zeolite minerals,
Improve the endurance quality of material；2) alkali-activated carbonatite can improve sio in siliceous material2Activity, increase hydrated product content, improve
The intensity of material；3) alkali-activator has certain viscosity, the component that can get angry as a kind of regulation, controls foam concrete
Pore structure.
(2) mechanism of action of haydite is as follows: 1) intensity of foam concrete can increase with the incorporation of appropriate haydite, prewets
Haydite can draw a part of water, play the effect at water source in Binder Materials hydration process in product it is ensured that Binder Materials
Aquation water requirement, make the raising of foam concrete comprcssive strength；2) haydite itself heat conductivity is less, good heat insulating,
Serve the effect of thermal resistance point in materials for wall, reduce the heat conductivity of concrete；3) haydite autogenous shrinkage value is minimum, Ke Yiyou
Effect alleviates the drying shrinkage that porous material leads to because of moisture evaporation, and meanwhile, the haydite after water suction can in further hydration process progressively
Discharge moisture, be conducive to the aquation of Binder Materials, make foam concrete form the aquation dominant area centered on haydite, be
The elimination of internal stress provides safeguard, thus reducing blockage effect.
(3) in the pore in foam concrete base material and microtriche pore moisture evaporation, produce that draw should in pore
Produce compressive stress in power, and corresponding solid structure around, lead to cement matrix volume contraction.After capillary water evaporation, further
Evaporation physics-chemically combined absorption water, the evaporation of these moisture will cause the notable contraction of cement matrix volume.Polyacrylic acid
The incorporation of sodium salt sap can discharge the internal moisture containing when negative pressure occurs, and balance out negative pressure, alleviate self-constriction.Meanwhile
The moisture of polyacrylic acid sodium salt sap release supplements the water requirement of Binder Materials aquation in time, promotes the hardening of foam concrete,
There is provided intensity for opposing shrinkage stress, further function as and reduce the effect shunk.The incorporation of polyacrylic acid sodium salt sap may also function as
Reduce the effect of foam concrete heat conductivity.This is because the polyacrylic acid sodium salt sap introducing absorbs substantial amounts of moisture,
Constantly release water in evaporation process and Binder Materials hydration process, lead to the position that later stage polyacrylic acid sodium salt sap exists to leave sky
Gap, improves the porosity of foam concrete, and space is increased, and the obstruction of conduction of heat increases, and makes the heat conductivity of foam concrete
Reduce.
Compared with prior art, the invention has the beneficial effects as follows:
(1) using industrial slag as main Binder Materials, and silt sludge ceramsite is applied to prepare foam concrete, system
The foam concrete obtaining meets the performance requirements of construction material, solves industrial residue and the recycling of silt mud is asked
Topic, is conducive to environmental protection and the secondary utilization to waste resource, and reduces engineering cost.
(2) prepare foam concrete using alkali-activated slag system, slag 100% is substituted cement, reduce engineering cost；
Sodium silicate is carried out activity excitation as alkali-activator to slag, promotes it to generate c-a-s-h gel it is ensured that gained foam mixes
The comprcssive strength of solidifying soil.
(3) haydite is porous material, has the water effect that necessarily absorbs water-release, has certain interior maintenance action to concrete, can
Effectively reduce the shrinkage of foam concrete；The heat conductivity of haydite itself is very low, can play the effect of thermal resistance point, can have
Effect reduces the heat conductivity of foam concrete.
(4) polyacrylic acid sodium salt sap has the effect of storage water, serves the effect of interior maintenance in foam concrete,
Promote aquation and alleviate the local decompression producing during moisture additional issue, reduce contraction.Meanwhile, after polyacrylic acid sodium salt sap releases water
Capillary aperture can be left in foam concrete, increase the porosity of foam concrete, reduce heat conductivity.
Specific embodiment
For a better understanding of the present invention, it is further elucidated with present disclosure with reference to embodiment, but the present invention
Content is not limited solely to the following examples.
In following examples, described slag is activity is s105 level, and its Blain specific surface is more than 450m2/kg；
The fineness of described flyash is 45 μm, square hole screen screen over-size < 12%, density 2.35g/cm3；
Described silicon ash specific surface area >=20000m2/ kg, mean diameter≤0.225 μm, density is about 1650kg/m3, live
Sex index >=96；
Described fiber is polypropylene fibre；
Described water reducer is polycarboxylic acid series high efficiency water reducing agent；
The modulus n=1.2 of described waterglass (i.e. sodium silicate solution, alkali-activator), solid content ＞ 60% (divide by quality
Number)；
Described foam is compound plant protein anion surfactant gs-1, and density is 1.01kg/l, dilution times
Number is 39, and coefficient of foaming is 20 times；
Described haydite is the haydite of firing sludge, takes from the pottery producing in " 12 " silt firing ceramsite by using sludge project
Grain, particle diameter distribution is 1～3mm, and unit weight is 450kg/m3, cylindrical compress strength is 1.2mpa, and heat conductivity is 0.13～0.14w/
(m·k).The preparation of haydite: mass percent as shared by mud, shale powder is: mud 30%, shale powder 70%, weigh mud
And shale powder, control (al in mud and shale powder2o3+sio2)/(cao+mgo+na2o+fe2o3)=7.5～10, by mud and page
Rock dust mixing granulation, particle diameter is 1～3mm；Then through 1050～1150 DEG C of calcining 15～20min in rotary kiln, obtain density etc.
Level is 300～500 grades, and cylindrical compress strength is 1～3mpa, and water absorption rate is 10～12% ultralight sludge ceramsite.
Described polyacrylic acid sodium salt sap is a kind of super absorbent resin, and Water absorption is 150～200 times.
The full water treatment steps of described haydite (or claiming ultralight sludge ceramsite) include: more than 24h before mixing foam concrete
Haydite is placed in cistern and carries out full water process；Before mixing concrete, the water in cistern is put only by 4～5h, makes haydite certainly
By dehydration；Before mixing concrete, by the haydite mix homogeneously in haydite heap, before mixing concrete, half an hour takes at least three to 1h
Individual representative position is surveyed in piling up the moisture content of haydite and is averaged, and the water content recording described haydite is 12% about
(quality).
The full water treatment steps of described polyacrylic acid sodium salt sap include: before mixing foam concrete, in polyacrylic acid sodium salt
The middle water adding 150～200 times of quality, soaks 2～3h so as to fully absorb moisture, is directly added into stirring during use.
Embodiment 1
A kind of full slag foam concrete plate of lower shrinkage sludge ceramsite alkali-activated carbonatite, each constituent content is shown in Table 1.
The material fiting ratio (kg/m3) of table 1 embodiment 1
(wherein, the volume of water reducer is slag, silicon ash and the total matter of flyash to weigh raw material according to the proportioning raw materials in table 1
The 2.1% of amount), haydite is prewetted and soaks free dehydration 4～5h after 24h, and the haydite in haydite heap is mixed by 1h before mixing
Uniformly, and measure its moisture content and be about 12%；Polyacrylic acid sodium salt sap is absorbed water 150～200 times；By slag, silica flour, fine coal
Ash and polypropylene fibre dry mixing 30～60s, make the slag as Binder Materials, silica flour and flyash and fiber agent be sufficiently mixed all
Even, add deduction haydite and the water of polyacrylic acid sodium salt sap water content, water reducer, waterglass and the haydite prewetted (i.e. through full
Water-treated haydite) and full water process polyacrylic acid sodium salt sap, stir 240～300s, make slurry fully wrap up haydite simultaneously
Haydite is made to be evenly distributed in slurry；Again the foam that foaming agent sends is added mix 120～150s in the mixture slurry obtaining,
Obtain final product described foaming slurry (or claiming foam concrete) that need not be steam-cured；Foam concrete is pumped into mould and pours by tailing edge pipeline
Build, cover film after surface evening, form removal after standing 18～24h, and according to production needs, or watering or cover film maintenance are extremely
Age, obtain the described low receipts full slag foam concrete plate of mud contracting haydite alkali-activated carbonatite, its physical property technical specification is shown in Table 5 and table
6.
Embodiment 2
A kind of full slag foam concrete plate of lower shrinkage sludge ceramsite alkali-activated carbonatite, each constituent content is shown in Table 2.
Material fiting ratio (the kg/m of table 2 embodiment 23)
(wherein, the volume of water reducer is slag, silicon ash and the total matter of flyash to weigh raw material according to the proportioning raw materials in table 2
The 2.1% of amount), haydite is prewetted and soaks free dehydration 4～5h after 24h, and the haydite in haydite heap is mixed by 1h before mixing
Uniformly, and measure its moisture content and be about 12%；Polyacrylic acid sodium salt sap is absorbed water 150～200 times；By slag, silica flour, fine coal
Ash and polypropylene fibre dry mixing 30～60s, make the slag as Binder Materials, silica flour and flyash and fiber agent be sufficiently mixed all
Even, it is subsequently added deduction haydite and the water of polyacrylic acid sodium salt sap water content, water reducer, waterglass and the haydite prewetted (i.e.
Through full water-treated haydite) and full water process polyacrylic acid sodium salt sap, stirring 240～300s, make slurry fully wrap up pottery
Grain simultaneously makes haydite be evenly distributed in slurry；The foam again foaming agent being sent add in the mixture slurry obtaining mix 120～
150s, obtains final product described foaming slurry (or claiming foam concrete) that need not be steam-cured；Foam concrete is pumped into by tailing edge pipeline
Mould pours, cover film after surface evening, form removal after standing 18～24h, and according to production needs, or watering or cover film are supported
Protect to age, obtain the full slag foam concrete plate of described lower shrinkage sludge ceramsite alkali-activated carbonatite, its physical property technical specification is shown in Table 5
With table 6.
Embodiment 3
A kind of full slag foam concrete plate of lower shrinkage sludge ceramsite alkali-activated carbonatite, each constituent content is shown in Table 3.
Material fiting ratio (the kg/m of table 3 embodiment 33)
(wherein, the volume of water reducer is slag, silicon ash and the total matter of flyash to weigh raw material according to the proportioning raw materials in table 3
The 2.1% of amount), haydite is prewetted and soaks free dehydration 4～5h after 24h, and the haydite in haydite heap is mixed by 1h before mixing
Uniformly, and measure its moisture content and be about 12%；Polyacrylic acid sodium salt sap is absorbed water 150～200 times；By slag, silica flour, fine coal
Ash and polypropylene fibre dry mixing 30～60s, make the slag as Binder Materials, silica flour and flyash and fiber agent be sufficiently mixed all
Even, it is subsequently added water (moisture that deduction mud Superlight ceramsites and polyacrylic acid sodium salt sap absorb), water reducer, waterglass and pre-
The haydite (i.e. through full water-treated haydite) of wet mistake and the polyacrylic acid sodium salt sap of bag water process, stir 240～300s, make
Slurry fully wraps up haydite and so that haydite is evenly distributed in slurry；The mixing slurry again the foam addition that foaming agent sends being obtained
Mix 120～150s in body, obtains final product described foaming slurry (or claiming foam concrete) that need not be steam-cured；Tailing edge pipeline is by foam
Concrete pump is sent into mould and is poured, cover film after surface evening, form removal after standing 18～24h, and according to production needs, or watering
Or cover film maintenance is to age, obtain the full slag foam concrete plate of described lower shrinkage sludge ceramsite alkali-activated carbonatite, its physical property
Technical specification is shown in Table 5 and table 6.
The embodiment 4 of contrast
A kind of autoclaved aerated concrete slab, each constituent content is shown in Table 4.
The match ratio (kg/m3) of each raw material of table 4 embodiment 4 steam-pressing aero-concrete
Join according to the raw material in table 4 and compare and weigh raw material, by cement, flyash, Gypsum Fibrosum, Calx and aluminium powder cream dry mixing 90～
120s, is subsequently added water (water temperature is 40～45 DEG C) and water reducer stirs 120～180s, so that Binder Materials is uniformly mixed to form and treats
The slurry got angry；Slurry to be got angry is poured into the mold, is put in standing 6～8h in 40～45 DEG C of attemperator so as to stablize
Get angry；Take out mould simultaneously air entrained concrete to be carried out steeping the cutting of head, subsequently carry out together with mould that steam-cured (temperature is 190
～200 DEG C, air pressure is 2.2 atmospheric pressure, and the time is 6～8h)；Steam-cured finish after take out mould, after form removal take out product, you can
Obtain Aerated concrete products, its physical property technical specification is shown in Table 5 and table 6.
The lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foam concrete plate that embodiment 1～3 is obtained is obtained with embodiment 4
Every physical and mechanical properties parameter of steam-pressing aero-concrete tested, the results are shown in Table 5.
The foam concrete plate of table 5 embodiment 1～4 preparation and the physical and mechanical properties parameter of autoclaved aerated concrete slab
Table 5 illustrates: contrasted with autoclaved aerated concrete slab, prepared by the present invention density is low, and comprcssive strength is higher,
Heat conductivity is relatively low, resisted shrinkage better performances.Illustrate to replace cement to prepare described foam concrete completely using slag, and pass through
Add full water haydite and polyacrylic acid sodium salt sap to be modified, make prepared foam concrete plate have preferable anti-contracility
Energy and heat-insulating property；Additionally, the Binder Materials wanted based on slag in the present invention, activity is carried out using alkali-activator to slag and swashs
Send out, can effectively ensure that and improve the intensity of gained foam coagulation.
The lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foam concrete plate that embodiment 1～3 is obtained is obtained with embodiment 4
Every endurance quality parameter of autoclaved aerated concrete slab tested, the results are shown in Table 6.
Foam concrete plate and the endurance quality parameter of autoclaved aerated concrete slab that table 6 embodiment 1～4 is obtained
Table 6 illustrates: is contrasted with steam-pressing aero-concrete, the full ore deposit of lower shrinkage sludge ceramsite alkali-activated carbonatite of present invention preparation
Slag foam concrete plate, has good endurance quality.
The above results show, are contrasted with traditional steam-pressing aero-concrete, the lower shrinkage mud pottery of present invention preparation
Grain alkali-activated carbonatite full slag foam concrete plate is applied to the fields such as insulating wall material, and shows good serviceability.
Embodiment 5
A kind of full slag foam concrete plate of lower shrinkage sludge ceramsite alkali-activated carbonatite, each constituent content is shown in Table 7.
Material fiting ratio (the kg/m of table 7 embodiment 53)
(wherein, the volume of water reducer is slag, silicon ash and the total matter of flyash to weigh raw material according to the proportioning raw materials in table 7
The 2.0% of amount), haydite is prewetted and soaks free dehydration 4～5h after 24h, and the haydite in haydite heap is mixed by 1h before mixing
Uniformly, and measure its moisture content and be about 12%；Polyacrylic acid sodium salt sap is absorbed water 150～200 times；By slag, silica flour, fine coal
Ash and polypropylene fibre dry mixing 30～60s, make the slag as Binder Materials, silica flour and flyash and fiber agent be sufficiently mixed all
Even, it is subsequently added water (moisture that deduction mud Superlight ceramsites and polyacrylic acid sodium salt sap absorb), water reducer, waterglass and pre-
The haydite (i.e. through full water-treated haydite) of wet mistake and the polyacrylic acid sodium salt sap of full water process, stir 240～300s, make
Slurry fully wraps up haydite and so that haydite is evenly distributed in slurry；The mixing slurry again the foam addition that foaming agent sends being obtained
Mix 120～180s in body, obtains final product described foaming slurry (or claiming foam concrete) that need not be steam-cured；Tailing edge pipeline is by foam
Concrete pump is sent into mould and is poured, cover film after surface evening, form removal after standing 18～24h, and according to production needs, or watering
Or cover film maintenance is to age, obtain the full slag foam concrete plate of described lower shrinkage sludge ceramsite alkali-activated carbonatite, as stated above
Carry out performance test, result shows, the foam concrete of the lower shrinkage sludge ceramsite alkali-activated carbonatite full slag preparation of present invention preparation,
There is good endurance quality.
Embodiment 6
A kind of full slag foam concrete plate of lower shrinkage sludge ceramsite alkali-activated carbonatite, each constituent content is shown in Table 8.
Material fiting ratio (the kg/m of table 8 embodiment 63)
(wherein, the volume of water reducer is slag, silicon ash and the total matter of flyash to weigh raw material according to the proportioning raw materials in table 8
The 2.1% of amount), haydite is prewetted and soaks free dehydration 4～5h after 24h, and the haydite in haydite heap is mixed by 1h before mixing
Uniformly, and measure its moisture content and be about 12%；Polyacrylic acid sodium salt sap is absorbed water 150～200 times；By slag, silica flour, fine coal
Ash and polypropylene fibre dry mixing 30～60s, make the slag as Binder Materials, silica flour and flyash and fiber agent be sufficiently mixed all
Even, it is subsequently added water (moisture that deduction mud Superlight ceramsites and polyacrylic acid sodium salt sap absorb), water reducer, waterglass and pre-
The haydite (i.e. through full water-treated haydite) of wet mistake and the polyacrylic acid sodium salt sap of full water process, stir 240～300s, make
Slurry fully wraps up haydite and so that haydite is evenly distributed in slurry；The mixing slurry again the foam addition that foaming agent sends being obtained
Mix 120～180s in body, obtains final product described foaming slurry (or claiming foam concrete) that need not be steam-cured；Tailing edge pipeline is by foam
Concrete pump is sent into mould and is poured, cover film after surface evening, form removal after standing 18～24h, and according to production needs, or watering
Or cover film maintenance is to age, obtain the full slag foam concrete plate of described lower shrinkage sludge ceramsite alkali-activated carbonatite, as stated above
Carry out performance test, result shows, the foam concrete of the lower shrinkage sludge ceramsite alkali-activated carbonatite full slag preparation of present invention preparation,
There is good endurance quality.
The bound value of each raw material according to the present invention, interval value can realize the present invention, the technological parameter of the present invention
The lower limit value of (as temperature, time etc.) and interval value can realize the present invention, embodiment numerous to list herein.
Claims (9)
1. a kind of full slag foam concrete plate of lower shrinkage sludge ceramsite alkali-activated carbonatite is it is characterised in that each component and content are: ore deposit
Slag 400～430kg/m3, silicon ash 20～35kg/m3, flyash 40～65kg/m3, fiber 0.8～1.1kg/m3, haydite 50～
80kg/m3, polyacrylic acid sodium salt sap 0.2～0.3kg/m3, water 100～125kg/m3, foaming agent 1～1.2kg/m3, alkali-activated carbonatite
Agent 7～8.5kg/m3, the volume of water reducer is the 1.8～2.1% of slag, silicon ash and flyash gross mass；
Described haydite is the haydite of firing sludge, and particle diameter is 1～3mm.
2. the full slag foam concrete plate of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1, its feature exists
In described slag reactivity is s105 level, and its Blain specific surface is more than 450m2/kg.
3. the full slag foam concrete plate of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1, its feature exists
In described polyacrylic acid sodium salt sap is a kind of super absorbent resin, and Water absorption is 150～200 times.
4. the full slag foam concrete plate of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1, its feature exists
In described alkali-activator is sodium silicate solution, and solid content is more than 60% (mass fraction).
5. the full slag foam concrete plate of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1, its feature exists
In described water reducer is polycarboxylic acid series high efficiency water reducing agent.
6. the full slag foam concrete plate of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1, its feature exists
In, described foaming agent is compound plant protein anion surfactant gs-1, and density is 1.01kg/l, and extension rate is 39,
Coefficient of foaming is 20 times.
7. the preparation side of the full slag foam concrete plate of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1
Method is it is characterised in that comprise the following steps: (1) weighs raw material according to proportioning raw materials, and each component and content are: slag 400～
430kg/m3, silicon ash 20～35kg/m3, flyash 40～65kg/m3, fiber 0.8～1.1kg/m3, haydite 50～80kg/m3, gather
Acrylic acid sodium salt sap0.2～0.3kg/m3, water 100～125kg/m3, foaming agent 1～1.2kg/m3, alkali-activator 7～8.5kg/
m3, the volume of water reducer is the 1.8～2.1% of slag, silicon ash and flyash gross mass；(2) by haydite and polyacrylic acid sodium salt
Sap carries out full water process；(3) slag, silicon ash, flyash and fiber are placed in mixing dry mixing 30～60s in concrete mixer,
In the compound obtaining, add deduction haydite and polyacrylic acid sodium salt sap water content water, through satisfy water-treated haydite and
Polyacrylic acid sodium salt sap, water reducer and alkali-activator, continue mix 240～300s, obtain mixture slurry；(4) in mixture slurry
In, introduce the foams that foaming agent sends, be stirred 120～180s, obtain foaming slurry；(5) along pipeline, gained is foamed and starch
Body pumping pours into the mold, cover film after surface evening, form removal after standing 18～24h, carries out maintenance to age, obtains described foam
Concrete slab.
8. the preparation side of the full slag foam concrete plate of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 7
Method is it is characterised in that the full water treatment steps of described haydite include: before mixing foam concrete, haydite is placed in storage by more than 24h
Carry out full water process in pond；Before mixing concrete, the water in cistern is put only by 4～5h, makes the free dehydration of haydite；Mixing
Before concrete processed, by the haydite mix homogeneously in haydite heap, before mixing concrete, half an hour takes at least three representative positions to 1h
Put survey pile up in the moisture content of haydite averaging.
9. the preparation side of the full slag foam concrete plate of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 7
Method is it is characterised in that the full water treatment steps of described polyacrylic acid sodium salt sap include: before mixing foam concrete, in polypropylene
Add the water of 150～200 times of quality in acid sodium-salt sap, soak 2～3h so as to fully absorb moisture, be directly added into during use and stir
Mix.
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| CN105000903A (en) * | 2015-07-14 | 2015-10-28 | 常州市武进翔宇电子元器件有限公司 | Flame retardant and flexible aerated block and preparation method therefor |
| CN106946510A (en) * | 2017-03-24 | 2017-07-14 | 东莞市地聚新材料有限公司 | Ground polymers base material formula and its preparation technology |
| CN108275951A (en) * | 2018-02-07 | 2018-07-13 | 安徽冠东电子科技有限公司 | A kind of high intensity green fire prevention door core and preparation method thereof |
| CN108358556A (en) * | 2018-03-08 | 2018-08-03 | 同济大学 | A kind of lower shrinkage type ultra-high performance concrete adding SAP |
| CN108546050B (en) * | 2018-07-02 | 2020-10-16 | 广东清大同科环保技术有限公司 | Fly ash-based concrete |
| CN110790583A (en) * | 2018-08-01 | 2020-02-14 | 棕纤环保科技有限公司 | High-strength ultra-light fireproof green heat insulation board, preparation method thereof and wall system |
| CN109534753A (en) * | 2018-12-29 | 2019-03-29 | 上海练定混凝土制品有限公司 | A kind of anti-crack concrete and its preparation process |
| CN110357543B (en) * | 2019-08-31 | 2021-12-07 | 郑州恒博环境科技股份有限公司 | Lightweight flame-retardant wall brick containing desulfurization wastewater sludge and preparation method thereof |
| CN112479662B (en) * | 2020-11-23 | 2022-04-05 | 广西交科集团有限公司 | Method and device for controlling shrinkage of alkali-activated slag mortar through low-temperature stirring |
| CN112624690A (en) * | 2020-12-18 | 2021-04-09 | 金华职业技术学院 | Manufacturing method of ceramsite aerated concrete light wall board |
| CN113715160A (en) * | 2021-07-13 | 2021-11-30 | 太原钢铁(集团)有限公司 | Production process of high-strength aerated concrete slab |
| CN115806413B (en) * | 2022-11-21 | 2023-09-29 | 广西晖龙科技有限公司 | Method and equipment for preparing self-heat-preservation foam concrete block by using different tailing slag |
| CN116199484B (en) * | 2023-04-27 | 2023-07-07 | 石家庄铁道大学 | SAP-containing cement-based aircraft interception material and preparation method thereof |
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