CN104230280A - 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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- CN104230280A CN104230280A CN201410464809.XA CN201410464809A CN104230280A CN 104230280 A CN104230280 A CN 104230280A CN 201410464809 A CN201410464809 A CN 201410464809A CN 104230280 A CN104230280 A CN 104230280A
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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, be specifically related to a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete 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 large, and inside has good sound insulation, heat insulation function in pore space structure, is a kind of insulating wall material of widespread use.Autoclave aerated concrete building block forms hole by foaming agent through chemical reaction, and is prepared from through techniques such as casting, precuring cutting, steam press maintenances.There is high energy consumption problem in the steaming pressuring curing process of autoclave aerated concrete building block, and concrete cement consumption is high, and the prefabricated components of preparation easily form cracking.In addition there is the problem that intensity and heat-insulating property are difficult to take into account in autoclave aerated concrete building block.Steam-pressing aero-concrete must ensure certain intensity as a kind of engineering materials, and intensity raising will cause its thermal and insulating performance to decline and density increases.Therefore, study further and improve other lightweights, high-strength, good heat insulating, and wall heat insulation material not easy to crack, in engineering construction field, there is important practical application meaning.
Current gas concrete generally uses cement as major gelled material, and cement consumption is very big, result in board materials production cost higher, and energy consumption is comparatively large, and the production and transport of cement is polluted also larger.This patent uses industrial residue to substitute cement and produces foamed concrete as hydrated adhesive gel material, and alkali-activated slag system can not only improve the ultimate compression strength of foamed concrete, also while realizing resource reutilization, reduces production cost.But the shrinkage value of alkali-activated slag system is comparatively large, so consider to mix ultralight sludge ceramsite to reduce the shrinkage value of foamed concrete.Sludge ceramsite fires with the industrial sludge containing heavy metal to form, this haydite has certain porosity, small part can be absorbed and divide water, hydration reaction can be promoted as conserving material in foamed concrete after immersion, not only can improve the intensity of goods but also the shrinkage value of foamed concrete can be reduced.Meanwhile, the thermal conductivity of haydite is lower, adds the effect playing thermal resistance point in foamed concrete, thus reduces the thermal conductivity of sheet material.Sludge ceramsite, while carrying out property modification to foamed concrete, has also carried out second stage employ to resource, and provides a kind of novel terms of settlement to the process of mud.But consider that the water-absorbent of sludge ceramsite is general, interior maintenance action is faint, and this patent is mixed with polyacrylic acid sodium salt SAP as conserving material in the second to promote hydration reaction." water storage-release water " effect of polyacrylic acid sodium salt SAP alleviates the inner negative pressure produced because of moisture additional issue of goods, thus alleviates the generation of contraction.Can in foamed concrete, leave a large amount of pores after polyacrylic acid sodium salt SAP releases water completely, increase the porosity of goods, reduce the thermal conductivity of foamed concrete, simultaneously also can reduction intensity by a small margin.
Summary of the invention
The object of the present invention is to provide a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate and preparation method thereof, described foamed concrete plate adopts slag to substitute cement completely and is prepared under alkali-activated carbonatite system, obtained foamed concrete plate homogeneity is high, mechanical property and endurance quality well, and not easily ftracture.
For achieving the above object, technical scheme of the present invention is: a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, it is characterized in that, be prepared from primarily of slag, silicon ash, flyash, fiber, haydite, polyacrylic acid sodium salt SAP, water, whipping agent, alkali-activator and water reducer, each component and content are: slag 400 ~ 430kg/m
3, silicon ash 20 ~ 35kg/m
3, flyash 40 ~ 65kg/m
3, fiber 0.8 ~ 1.1kg/m
3, haydite 50 ~ 80kg/m
3, polyacrylic acid sodium salt SAP 0.2 ~ 0.3kg/m
3, water 100 ~ 125kg/m
3, whipping agent 1 ~ 1.2kg/m
3, alkali-activator 7 ~ 8.5kg/m
3, the volume of water reducer is 1.8 ~ 2.1% of slag, silicon ash and flyash total mass.
According to such scheme, described slag reactivity is S105 level, and its Blain specific surface is greater than 450m
2/ kg.
According to such scheme, described haydite is the haydite of firing sludge, and take from the haydite produced in " 12 " silt firing ceramsite by using sludge project, size distribution is 1 ~ 3mm, and thermal conductivity is 0.13 ~ 0.14W/ (mK).The preparation of haydite: be by mass percent shared by mud, shale powder: mud 30%, shale powder 70%, take mud and shale powder, controls (Al in mud and shale powder
2o
3+ SiO
2)/(CaO+MgO+Na
2o+Fe
2o
3)=7.5 ~ 10, by mud and shale powder mixing granulation, particle diameter is 1 ~ 3mm; Then in rotary kiln, calcine 15 ~ 20min through 1050 ~ 1150 DEG C, obtaining density rating is 300 ~ 500 grades, and cylindrical compress strength is 1 ~ 3MPa, and water-intake rate is the ultralight sludge ceramsite of 10 ~ 12%.
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 greater than 60% (massfraction), modulus ratio n=1.2.
According to such scheme, described water reducer is polycarboxylic acid series high efficiency water reducing agent.
According to such scheme, described foaming agent is compound plant protein anion surfactant GS-1, and density is 1.01kg/L, and extension rate is 39, and foam expansion is 20 times, in the content of moisture water not included in component proportion required in foaming agent foam process.
According to such scheme, the preparation method of above-mentioned a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, it is characterized in that, comprise the following steps: (1) takes raw material according to proportioning raw materials, each component and content are: slag 400 ~ 430kg/m
3, silicon ash 20 ~ 35kg/m
3, flyash 40 ~ 65kg/m
3, fiber 0.8 ~ 1.1kg/m
3, haydite 50 ~ 80kg/m
3, polyacrylic acid sodium salt SAP0.2 ~ 0.3kg/m
3, water 100 ~ 125kg/m
3, whipping agent 1 ~ 1.2kg/m
3, alkali-activator 7 ~ 8.5kg/m
3, the volume of water reducer is 1.8 ~ 2.1% of slag, silicon ash and flyash total mass; (2) haydite and polyacrylic acid sodium salt SAP are carried out full water treatment; (3) slag, silicon ash, flyash and fiber agent are placed in concrete mixer mixing dry mixing 30 ~ 60s, in the compound obtained, add the water of deduction haydite and polyacrylic acid sodium salt SAP water content, through full 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, introduce the foams that whipping agent sends, carry out stirring 120 ~ 180s, obtain foaming slurry; (5) pour into the mold along pipeline slurry pumping of being foamed by gained, coating film after surface evening, leaves standstill form removal after 18 ~ 24h, carries out maintenance to the length of time, obtain described foamed concrete plate.
According to such scheme, the full water treatment steps of described haydite (or claim mud Superlight ceramsites) comprising: before mixing foamed concrete, haydite is placed in water reservoir and carries out full water treatment by more than 24h; Before mixing concrete, the water in water reservoir is put only by 4 ~ 5h, makes the free dehydration of haydite; Before mixing concrete, the haydite in haydite heap mixes by 1h; before mixing concrete, be taken to the water ratio of haydite in few three representative positions survey accumulations half an hour and average, the water content recording described haydite is about 12% (quality).
According to such scheme, the full water treatment steps of described polyacrylic acid sodium salt SAP comprises: before mixing foamed concrete, adds the water of 150 ~ 200 times of quality in polyacrylic acid sodium salt SAP, soaks 2 ~ 3h, makes it fully absorb moisture, directly add stirring during use.
According to such scheme, the minimum size specification of obtained foamed concrete plate is 100 × 300 × 22cm, and overall dimension specification is 300 × 300 × 22cm, and unit weight is 580 ~ 620kg/m
3, 28d ultimate compression strength is 5.0 ~ 6.0MPa, thermal conductivity≤0.145w/ (mk), shrinkage value < 0.4mmm
-1, carbonation coefficient < 1.1, mass loss < 3% after freeze thawing and loss of strength < 5%.
Principle of the present invention is:
(1) in foamed concrete, the mechanism of action of alkali-activated slag is as follows: 1) in hydrated product, produce zeolite minerals, improves the endurance quality of material; 2) alkali-activated carbonatite can improve SiO in siliceous material
2activity, increase the content of hydrated product, improve the intensity of material; 3) alkali-activator has certain viscosity, can be used as the component that a kind of adjustment is got angry, and controls the pore structure of foamed concrete.
(2) mechanism of action of haydite is as follows: 1) intensity of foamed concrete can mixing and increase with appropriate haydite, the haydite of prewetting can draw a part of water, the effect at water source is played in gelling material hydration process in goods, ensure that the aquation water requirement of gelling material, make the raising of foamed concrete ultimate compression strength; 2) haydite self thermal conductivity is less, and good heat insulating serves the effect of thermal resistance point in materials for wall, reduces concrete thermal conductivity; 3) haydite autogenous shrinkage value is minimum; effectively can alleviate the drying shrinkage that porous material causes because of moisture evaporation; simultaneously; haydite after water suction progressively can discharge moisture in further hydration process; be conducive to the aquation of gelling material; make the aquation dominant area of foamed concrete formation centered by haydite, for the elimination of internal stress provides safeguard, thus reduce shrinking effect.
(3) in the pore in foamed concrete base material and microtriche pore, the evaporation of moisture, produces tensile stress, and produces stress in corresponding solid structure around, cause cement matrix volumetric shrinkage in pore.After capillary water evaporation, evaporate physics-chemically combined planar water further, the evaporation of these moisture will cause the remarkable contraction of cement matrix volume.Mixing of polyacrylic acid sodium salt SAP can discharge the inner moisture contained when negative pressure occurs, balance out negative pressure, alleviate self-constriction.The moisture that meanwhile polyacrylic acid sodium salt SAP discharges supplements the water requirement of gelling material aquation in time, promotes the sclerosis of foamed concrete, for opposing string stress provides intensity, plays the effect reducing and shrink further.Polyacrylic acid sodium salt SAP mixes the effect also can played and reduce foamed concrete thermal conductivity.This is because the polyacrylic acid sodium salt SAP introduced absorbs a large amount of moisture, constantly water is released in evaporative process and gelling material hydration process, the position causing later stage polyacrylic acid sodium salt SAP to exist leaves space, improve the porosity of foamed concrete, space is increased, heat conducting obstruction increases, and the thermal conductivity of foamed concrete is reduced.
Compared with prior art, the invention has the beneficial effects as follows:
(1) using industrial slag as main gelling material; and silt sludge ceramsite is applied to prepares foamed concrete; obtained foamed concrete meets the properties requirement of material of construction; solve the recycling problem of industrial residue and silt mud; be conducive to protection of the environment and the second stage employ to waste resource, and reduce engineering cost.
(2) utilize alkali-activated slag system to prepare foamed concrete, slag 100% is substituted cement, reduce engineering cost; Sodium silicate is carried out activity excitation as alkali-activator to slag, impels it to generate C-A-S-H gel, ensure the ultimate compression strength of gained foamed concrete.
(3) haydite is porous material, has certain water suction-release water effect, to concrete have certain in maintenance action, effectively can reduce the shrinkage of foamed concrete; The thermal conductivity of haydite self is very low, can play the effect of thermal resistance point, effectively can reduce the thermal conductivity of foamed concrete.
(4) polyacrylic acid sodium salt SAP has the effect storing water, serves the effect of interior maintenance in foamed concrete, and the local decompression produced when promoting aquation and alleviate moisture additional issue, reduces contraction.Meanwhile, after polyacrylic acid sodium salt SAP releases water, capillary aperture can be left in foamed concrete, increase the porosity of foamed concrete, reduce thermal conductivity.
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
In following examples, described slag is active is S105 level, and its Blain specific surface is greater than 450m
2/ kg;
The fineness of described flyash is 45 μm, square hole sieve screen over-size <12%, density 2.35g/cm
3;
Described silicon ash specific surface area>=20000m
2/ kg, median size≤0.225 μm, density is about 1650kg/m
3, activity 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 water glass (i.e. sodium silicate solution, alkali-activator), solid content > 60% (massfraction);
Described foaming agent is compound plant protein anion surfactant GS-1, and density is 1.01kg/L, and extension rate is 39, and foam expansion is 20 times;
Described haydite is the haydite of firing sludge, and take from the haydite produced in " 12 " silt firing ceramsite by using sludge project, size distribution is 1 ~ 3mm, and unit weight is 450kg/m
3, cylindrical compress strength is 1.2MPa, and thermal conductivity is 0.13 ~ 0.14W/ (mK).The preparation of haydite: be by mass percent shared by mud, shale powder: mud 30%, shale powder 70%, take mud and shale powder, controls (Al in mud and shale powder
2o
3+ SiO
2)/(CaO+MgO+Na
2o+Fe
2o
3)=7.5 ~ 10, by mud and shale powder mixing granulation, particle diameter is 1 ~ 3mm; Then in rotary kiln, calcine 15 ~ 20min through 1050 ~ 1150 DEG C, obtaining density rating is 300 ~ 500 grades, and cylindrical compress strength is 1 ~ 3MPa, and water-intake rate is the ultralight sludge ceramsite of 10 ~ 12%.
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) comprising: before mixing foamed concrete, haydite is placed in water reservoir and carries out full water treatment by more than 24h; Before mixing concrete, the water in water reservoir is put only by 4 ~ 5h, makes the free dehydration of haydite; Before mixing concrete, the haydite in haydite heap mixes by 1h; before mixing concrete, be taken to the water ratio of haydite in few three representative positions survey accumulations half an hour and average, the water content recording described haydite is about 12% (quality).
The full water treatment steps of described polyacrylic acid sodium salt SAP comprises: before mixing foamed concrete, adds the water of 150 ~ 200 times of quality in polyacrylic acid sodium salt, soaks 2 ~ 3h, makes it fully absorb moisture, directly add stirring during use.
Embodiment 1
A kind of lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, each component concentration is in table 1.
The material fiting ratio (kg/m3) of table 1 embodiment 1
Raw material is taken (wherein according to the proportioning raw materials in table 1, the volume of water reducer is 2.1% of slag, silicon ash and flyash total mass), haydite is prewetted and soaks free dehydration 4 ~ 5h after 24h, and before mixing 1h haydite is piled in haydite mix, and measure its water ratio and be about 12%; Polyacrylic acid sodium salt SAP is absorbed water 150 ~ 200 times; By slag, silica flour, flyash and polypropylene fibre dry mixing 30 ~ 60s, make fully to mix with fiber agent as the slag of gelling material, silica flour and flyash, add the polyacrylic acid sodium salt SAP of the water of deduction haydite and polyacrylic acid sodium salt SAP water content, water reducer, water glass and the haydite (namely through full water-treated haydite) of prewetting and full water treatment, stir 240 ~ 300s, make slurry fully wrap up haydite and make haydite be evenly distributed in slurry; The foam that whipping agent sends is added mix 120 ~ 150s in the mixture slurry obtained again, obtain described without the need to steam-cured foaming slurry (or claiming foamed concrete); Finally along pipeline, foamed concrete is pumped into mould to build, coating film after surface evening, form removal after standing 18 ~ 24h, and according to need of production, watering or coating film maintenance to the length of time, obtain described low receipts mud contracting haydite alkali-activated carbonatite full slag foamed concrete plate, its physicals technical indicator is in table 5 and table 6.
Embodiment 2
A kind of lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, each component concentration is in table 2.
Material fiting ratio (the kg/m of table 2 embodiment 2
3)
Raw material is taken (wherein according to the proportioning raw materials in table 2, the volume of water reducer is 2.1% of slag, silicon ash and flyash total mass), haydite is prewetted and soaks free dehydration 4 ~ 5h after 24h, and before mixing 1h haydite is piled in haydite mix, and measure its water ratio and be about 12%; Polyacrylic acid sodium salt SAP is absorbed water 150 ~ 200 times; By slag, silica flour, flyash and polypropylene fibre dry mixing 30 ~ 60s, make fully to mix with fiber agent as the slag of gelling material, silica flour and flyash, add the polyacrylic acid sodium salt SAP of the water of deduction haydite and polyacrylic acid sodium salt SAP water content, water reducer, water glass and the haydite (namely through full water-treated haydite) of prewetting and full water treatment subsequently, stir 240 ~ 300s, make slurry fully wrap up haydite and make haydite be evenly distributed in slurry; The foam that whipping agent sends is added mix 120 ~ 150s in the mixture slurry obtained again, obtain described without the need to steam-cured foaming slurry (or claiming foamed concrete); Finally along pipeline, foamed concrete is pumped into mould to build, coating film after surface evening, form removal after standing 18 ~ 24h, and according to need of production, watering or coating film maintenance to the length of time, obtain described lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, its physicals technical indicator is in table 5 and table 6.
Embodiment 3
A kind of lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, each component concentration is in table 3.
Material fiting ratio (the kg/m of table 3 embodiment 3
3)
Raw material is taken (wherein according to the proportioning raw materials in table 3, the volume of water reducer is 2.1% of slag, silicon ash and flyash total mass), haydite is prewetted and soaks free dehydration 4 ~ 5h after 24h, and before mixing 1h haydite is piled in haydite mix, and measure its water ratio and be about 12%; Polyacrylic acid sodium salt SAP is absorbed water 150 ~ 200 times; By slag, silica flour, flyash and polypropylene fibre dry mixing 30 ~ 60s, make fully to mix with fiber agent as the slag of gelling material, silica flour and flyash, add the polyacrylic acid sodium salt SAP of water (moisture that deduction mud Superlight ceramsites and polyacrylic acid sodium salt SAP absorb), water reducer, water glass and the haydite (namely through full water-treated haydite) of prewetting and bag water treatment subsequently, stir 240 ~ 300s, make slurry fully wrap up haydite and make haydite be evenly distributed in slurry; The foam that whipping agent sends is added mix 120 ~ 150s in the mixture slurry obtained again, obtain described without the need to steam-cured foaming slurry (or claiming foamed concrete); Finally along pipeline, foamed concrete is pumped into mould to build, coating film after surface evening, form removal after standing 18 ~ 24h, and according to need of production, watering or coating film maintenance to the length of time, obtain described lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, its physicals technical indicator is in table 5 and table 6.
The embodiment 4 of contrast
A kind of autoclaved aerated concrete slab, each component concentration is in table 4.
The proportioning (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 take raw material, by cement, flyash, gypsum, lime and aluminium powder cream dry mixing 90 ~ 120s, add water (water temperature is 40 ~ 45 DEG C) and water reducer stirring 120 ~ 180s subsequently, make gelling material be uniformly mixed to form slurry to be got angry; Slurry to be got angry is poured into the mold, is put in the attemperator of 40 ~ 45 DEG C and leaves standstill 6 ~ 8h, make it stablize and get angry; Taking-up mould also carries out the cutting of steeping head to gas concrete, carries out steam-cured (temperature is 190 ~ 200 DEG C, and air pressure is 2.2 normal atmosphere, and the time is 6 ~ 8h) subsequently together with mould; Take out mould after steam-cured, take out goods after form removal, can obtain Aerated concrete products, its physicals technical indicator is in table 5 and table 6.
Every physical and mechanical properties parameter of steam-pressing aero-concrete lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate obtained for embodiment 1 ~ 3 and embodiment 4 obtained is tested, and the results are shown in Table 5.
The physical and mechanical properties parameter of foamed concrete plate prepared by table 5 embodiment 1 ~ 4 and autoclaved aerated concrete slab
Table 5 illustrates: contrast with autoclaved aerated concrete slab, the present invention prepare density low, ultimate compression strength is higher, and thermal conductivity is lower, resisted shrinkage better performances.Illustrate and adopt slag to replace cement to prepare described foamed concrete completely, and by adding full water haydite and polyacrylic acid sodium salt SAP carries out modification, make the foamed concrete plate obtained have good resisted shrinkage performance and heat-insulating property; In addition, in the present invention, slag is main gelling material, adopts alkali-activator to carry out activity excitation to slag, effectively can ensure and improve the intensity of gained foam coagulation.
Every endurance quality parameter of autoclaved aerated concrete slab lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate obtained for embodiment 1 ~ 3 and embodiment 4 obtained is tested, and the results are shown in Table 6.
The endurance quality parameter of the foamed concrete plate that table 6 embodiment 1 ~ 4 is obtained and autoclaved aerated concrete slab
Table 6 illustrates: contrast with steam-pressing aero-concrete, and lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate prepared by the present invention, has good endurance quality.
The above results shows, contrasts with traditional steam-pressing aero-concrete, and lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate prepared by the present invention is applied to the fields such as insulating wall material, and shows good use properties.
Embodiment 5
A kind of lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, each component concentration is in table 7.
Material fiting ratio (the kg/m of table 7 embodiment 5
3)
Raw material is taken (wherein according to the proportioning raw materials in table 7, the volume of water reducer is 2.0% of slag, silicon ash and flyash total mass), haydite is prewetted and soaks free dehydration 4 ~ 5h after 24h, and before mixing 1h haydite is piled in haydite mix, and measure its water ratio and be about 12%; Polyacrylic acid sodium salt SAP is absorbed water 150 ~ 200 times; By slag, silica flour, flyash and polypropylene fibre dry mixing 30 ~ 60s, make fully to mix with fiber agent as the slag of gelling material, silica flour and flyash, add the polyacrylic acid sodium salt SAP of water (moisture that deduction mud Superlight ceramsites and polyacrylic acid sodium salt SAP absorb), water reducer, water glass and the haydite (namely through full water-treated haydite) of prewetting and full water treatment subsequently, stir 240 ~ 300s, make slurry fully wrap up haydite and make haydite be evenly distributed in slurry; The foam that whipping agent sends is added mix 120 ~ 180s in the mixture slurry obtained again, obtain described without the need to steam-cured foaming slurry (or claiming foamed concrete); Finally along pipeline, foamed concrete is pumped into mould to build, coating film after surface evening, form removal after standing 18 ~ 24h, and according to need of production, watering or coating film maintenance to the length of time, obtain described lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, carry out performance test as stated above, result shows, and foamed concrete prepared by the full slag of lower shrinkage sludge ceramsite alkali-activated carbonatite prepared by the present invention, has good endurance quality.
Embodiment 6
A kind of lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, each component concentration is in table 8.
Material fiting ratio (the kg/m of table 8 embodiment 6
3)
Raw material is taken (wherein according to the proportioning raw materials in table 8, the volume of water reducer is 2.1% of slag, silicon ash and flyash total mass), haydite is prewetted and soaks free dehydration 4 ~ 5h after 24h, and before mixing 1h haydite is piled in haydite mix, and measure its water ratio and be about 12%; Polyacrylic acid sodium salt SAP is absorbed water 150 ~ 200 times; By slag, silica flour, flyash and polypropylene fibre dry mixing 30 ~ 60s, make fully to mix with fiber agent as the slag of gelling material, silica flour and flyash, add the polyacrylic acid sodium salt SAP of water (moisture that deduction mud Superlight ceramsites and polyacrylic acid sodium salt SAP absorb), water reducer, water glass and the haydite (namely through full water-treated haydite) of prewetting and full water treatment subsequently, stir 240 ~ 300s, make slurry fully wrap up haydite and make haydite be evenly distributed in slurry; The foam that whipping agent sends is added mix 120 ~ 180s in the mixture slurry obtained again, obtain described without the need to steam-cured foaming slurry (or claiming foamed concrete); Finally along pipeline, foamed concrete is pumped into mould to build, coating film after surface evening, form removal after standing 18 ~ 24h, and according to need of production, watering or coating film maintenance to the length of time, obtain described lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, carry out performance test as stated above, result shows, and foamed concrete prepared by the full slag of lower shrinkage sludge ceramsite alkali-activated carbonatite prepared by the present invention, has good endurance quality.
Bound value, the interval value of each raw material that the present invention relates to can realize the present invention, and lower limit value and the interval value of processing parameter of the present invention (as temperature, time etc.) can realize the present invention, do not enumerate embodiment at this.
Claims (10)
1. a lower shrinkage sludge ceramsite alkali-activated carbonatite full slag foamed concrete plate, is characterized in that, each component and content are: slag 400 ~ 430kg/m
3, silicon ash 20 ~ 35kg/m
3, flyash 40 ~ 65kg/m
3, fiber 0.8 ~ 1.1kg/m
3, haydite 50 ~ 80kg/m
3, polyacrylic acid sodium salt SAP 0.2 ~ 0.3kg/m
3, water 100 ~ 125kg/m
3, whipping agent 1 ~ 1.2kg/m
3, alkali-activator 7 ~ 8.5kg/m
3, the volume of water reducer is 1.8 ~ 2.1% of slag, silicon ash and flyash total mass.
2. a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1 full slag foamed concrete plate, is characterized in that, described slag reactivity is S105 level, and its Blain specific surface is greater than 450m
2/ kg.
3. a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1 full slag foamed concrete plate, is characterized in that, described haydite is the haydite of firing sludge, and particle diameter is 1 ~ 3mm.
4. a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1 full slag foamed concrete plate, is characterized in that, described polyacrylic acid sodium salt SAP is a kind of super absorbent resin, and Water absorption is 150 ~ 200 times.
5. a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1 full slag foamed concrete plate, is characterized in that, described alkali-activator is sodium silicate solution, and solid content is greater than 60% (massfraction).
6. a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1 full slag foamed concrete plate, is characterized in that, described water reducer is polycarboxylic acid series high efficiency water reducing agent.
7. a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1 full slag foamed concrete plate, it is characterized in that, described foaming agent is compound plant protein anion surfactant GS-1, and density is 1.01kg/L, extension rate is 39, and foam expansion is 20 times.
8. the preparation method of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 1 full slag foamed concrete plate, it is characterized in that, comprise the following steps: (1) takes raw material according to proportioning raw materials, each component and content are: slag 400 ~ 430kg/m
3, silicon ash 20 ~ 35kg/m
3, flyash 40 ~ 65kg/m
3, fiber 0.8 ~ 1.1kg/m
3, haydite 50 ~ 80kg/m
3, polyacrylic acid sodium salt SAP0.2 ~ 0.3kg/m
3, water 100 ~ 125kg/m
3, whipping agent 1 ~ 1.2kg/m
3, alkali-activator 7 ~ 8.5kg/m
3, the volume of water reducer is 1.8 ~ 2.1% of slag, silicon ash and flyash total mass; (2) haydite and polyacrylic acid sodium salt SAP are carried out full water treatment; (3) slag, silicon ash, flyash and fiber agent are placed in concrete mixer mixing dry mixing 30 ~ 60s, in the compound obtained, add the water of deduction haydite and polyacrylic acid sodium salt SAP water content, through full 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, introduce the foams that whipping agent sends, carry out stirring 120 ~ 180s, obtain foaming slurry; (5) pour into the mold along pipeline slurry pumping of being foamed by gained, coating film after surface evening, leaves standstill form removal after 18 ~ 24h, carries out maintenance to the length of time, obtain described foamed concrete plate.
9. the preparation method of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 8 full slag foamed concrete plate, it is characterized in that, the full water treatment steps of described haydite comprises: before mixing foamed concrete, haydite is placed in water reservoir and carries out full water treatment by more than 24h; Before mixing concrete, the water in water reservoir is put only by 4 ~ 5h, makes the free dehydration of haydite; Before mixing concrete, the haydite in haydite heap mixes by 1h, is taken to the water ratio of haydite in few three representative positions survey accumulations half an hour and averages before mixing concrete.
10. the preparation method of a kind of lower shrinkage sludge ceramsite alkali-activated carbonatite according to claim 8 full slag foamed concrete plate, it is characterized in that, the full water treatment steps of described polyacrylic acid sodium salt SAP comprises: before mixing foamed concrete, the water of 150 ~ 200 times of quality is added in polyacrylic acid sodium salt SAP, soak 2 ~ 3h, make it fully absorb moisture, during use, directly add stirring.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108546050A (en) * | 2018-07-02 | 2018-09-18 | 广东清大同科环保技术有限公司 | A kind of fly ash base concrete |
| 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 |
| CN110357543A (en) * | 2019-08-31 | 2019-10-22 | 郑州恒博环境科技股份有限公司 | A kind of light flame-retardant wall body brick and preparation method thereof containing desulfurization wastewater sludge |
| WO2020024975A1 (en) * | 2018-08-01 | 2020-02-06 | Palmeco Tech Limited | A high-strength ultra-light weight fireproof green thermal insulation geo panel, the eco-friendly manufacturing process and articles thereof |
| CN112479662A (en) * | 2020-11-23 | 2021-03-12 | 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 |
| CN115806413A (en) * | 2022-11-21 | 2023-03-17 | 广西晖龙科技有限公司 | Method and equipment for preparing self-insulation foam concrete building block by using different tailings |
| CN116199484A (en) * | 2023-04-27 | 2023-06-02 | 石家庄铁道大学 | SAP-containing cement-based aircraft interception material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515838A (en) * | 2011-12-21 | 2012-06-27 | 浙江省建筑科学设计研究院有限公司 | Lightweight aggregate foam concrete warming plate with low shrinkage and low water absorption |
| CN102942380A (en) * | 2012-09-17 | 2013-02-27 | 刘巧玲 | Foam cement insulation material for exterior wall and preparation method thereof |
| CN103332902A (en) * | 2013-07-03 | 2013-10-02 | 武汉理工大学 | Water absorbent swelling resin aggregate concrete and preparation method thereof |
| CN104016653A (en) * | 2014-05-30 | 2014-09-03 | 中国矿业大学(北京) | A light fireproof thermal insulation material and a preparing method thereof |
-
2014
- 2014-09-12 CN CN201410464809.XA patent/CN104230280B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515838A (en) * | 2011-12-21 | 2012-06-27 | 浙江省建筑科学设计研究院有限公司 | Lightweight aggregate foam concrete warming plate with low shrinkage and low water absorption |
| CN102942380A (en) * | 2012-09-17 | 2013-02-27 | 刘巧玲 | Foam cement insulation material for exterior wall and preparation method thereof |
| CN103332902A (en) * | 2013-07-03 | 2013-10-02 | 武汉理工大学 | Water absorbent swelling resin aggregate concrete and preparation method thereof |
| CN104016653A (en) * | 2014-05-30 | 2014-09-03 | 中国矿业大学(北京) | A light fireproof thermal insulation material and a preparing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 王发洲等: "预湿轻集料与高吸水性树脂的内养护效果比较", 《武汉理工大学学报》 * |
| 王发洲等: "预湿轻集料对混凝土内部相对湿度特性的影响", 《材料科学与工艺》 * |
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| 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 |
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