CN107746215A - A kind of mineral polymer foam concrete and preparation method - Google Patents

A kind of mineral polymer foam concrete and preparation method Download PDF

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Publication number
CN107746215A
CN107746215A CN201711041282.XA CN201711041282A CN107746215A CN 107746215 A CN107746215 A CN 107746215A CN 201711041282 A CN201711041282 A CN 201711041282A CN 107746215 A CN107746215 A CN 107746215A
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China
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parts
mineral polymer
foam concrete
powder
polymer foam
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CN201711041282.XA
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Chinese (zh)
Inventor
宋学锋
苏子义
邓倩倩
杨萍
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Priority to CN201711041282.XA priority Critical patent/CN107746215A/en
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    • 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
    • C04B28/006Compositions 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 mineral polymers, e.g. geopolymers of the Davidovits type
    • 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
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20Mortars, concrete or artificial stone characterised by specific physical values for the density
    • 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
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • 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
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses a kind of mineral polymer foam concrete and preparation method; the present invention is using graining blast-furnace cinder micro-powder, circulating fluidized bed combustion coal solid sulfur clinker micro mist as presoma; the subcarbonate that sodium hydroxide synthesizes with Paris white room temperature is chemical activator; expanded perlite is light-weight aggregate, and aluminium powder cream is the composition such as foaming agent.According to the mass fraction:100 parts of presoma, 9~15 parts of chemical activator, 5~12 parts of light-weight aggregate, 0.08~0.2 part of foaming agent, 60~80 parts of water.The present invention prepares that foam concrete solves lightweight, high-strength, high insulation is not easy the technical barrier coordinated using mineral polymer;Graining blast-furnace cinder micro-powder is substituted as presoma using circulating fluidized bed combustion coal solid sulfur clinker micro mist part, mineral polymer is overcome and shrinks performance deficiency big, easy to crack;Traditional exciting agent highly corrosive harm such as caustic alkali, waterglass is eliminated using subcarbonate as chemical activator.The present invention is promoted the use of to realizing that China's building energy conservation and building materials ecodevelopment are significant.

Description

A kind of mineral polymer foam concrete and preparation method
Technical field
Art of the present invention is new ecological construction material and building energy saving field, is related to a kind of mineral polymer foam Concrete and preparation method.
Background technology
Carried out building thermal-insulation energy-saving engineering since 2005 in China, it is desirable to which new building must carry out 50% energy-conservation mesh Mark (target of part important city is energy-conservation 65%), this engineering accelerates the development of heat preserving and insulating material.It is inorganic foamed mixed Solidifying soil has the premium properties such as light, insulation, heat-insulated, fire prevention, receives state as a kind of new energy-conserving and environment-protective construction material Inside and outside extensive concern and further investigation.
Conventional inorganic coagulation material is used equally for preparing foam concrete, but to ensure the excellent pore-forming of foam concrete Performance, then necessarily require the rapid condensation of foam concrete slurry energy to harden, merged with the foam for preventing from introducing, rupture is even collapsed Mould.Therefore, condense binder materials (such as alumina cement, sulphate aluminium cement) fast, that strength development is fast and be advantageously employed in bubble The preparation of foam concrete.Though using alumina cement, sulphate aluminium cement prepares foam concrete there are many advantages, material be present The economic and technical defects such as energy consumption is big, cost is high, endurance quality is poor.
Mineral polymer (Mineral Polymer), is using industrial solid castoff, metallurgical slag or calcined clay as forerunner Body, with caustic alkali, carbonate, sulfate, waterglass etc. for exciting agent, formed by the poly- polycondensation of solution of aluminium silicate mineral A kind of inorganic polymer material.Mineral polymer has fast solidifying, early strong, high-strength, high temperature resistant, corrosion-resistant, environment-friendly The features such as, the novel gelled material of 21 century most development prospect is described as, possesses many potential qualities for preparing foam concrete. Following technology and economic effect can be obtained by preparing foam concrete as binder materials using mineral polymer:Fast solidifying, can have Mould phenomenon that the bubble that effect avoids introducing merges, shattered to pieces and slurry collapses;Higher early stage and later strength, foam concrete can be achieved The combination property of lightweight-high-strength-height insulation;Foam concrete, energy are prepared using industrial solid castoff synthetic mineral polymer Embody the sustainable development routes such as energy-saving and environmental protection, the ecology of construction material.
At present, though prepare foam concrete using mineral polymer studies have reported that, document uses granulated blast-furnace mostly Slag, slag prepare mineral polymer, existing for the technical method using caustic alkali, waterglass as presoma as exciting agent Subject matter has:Caustic alkali, waterglass corrosion are strong, operating safety risks be present;It is big, easy that mineral polymer condenses hardening after-contraction Cracking;The serious accumulation of salt in the surface soil be present.
The content of the invention
Present invention technical problem with reference to existing for mineral polymer foam concrete, before reasonable selection mineral polymer Drive body and the chemical activator of matching, there is provided lightweight, the mineral association that high-strength, thermal conductivity factor is low, volume stability is excellent Thing foam concrete and preparation method.
The present invention is achieved by the following technical solutions:
A kind of mineral polymer foam concrete, according to the mass fraction, it is made up of following raw material:100 parts of presoma, chemistry 60~80 parts of 9~15 parts of exciting agent, 5~12 parts of light-weight aggregate, 0.08~0.2 part of foaming agent and water.
The presoma is the mixture of graining blast-furnace cinder micro-powder and circulating fluidized bed combustion coal solid sulfur clinker, granulated blast-furnace The mass ratio of slag micropowder and circulating fluidized bed combustion coal solid sulfur clinker is (4:6)~(7:3).
Graining blast-furnace cinder micro-powder performance indications meet the requirement of S95 levels;It is calculated in mass percent, circulating fluidized bed combustion coal solid Calcium oxide content requirement in sulphur lime-ash is not more than 30%, and sulfur trioxide content requirement is not more than 20%, circulating fluidized bed combustion coal Fluidized bed combustion coal ash/slag fineness 0.045mm screen over-sizes are not more than 12%.
The chemical activator is sodium hydroxide with Paris white under the conditions of 70~90 DEG C, small through liquid phase reactor 8~10 When, the solid powder that obtains after filtering drying grinding, the solid powder is subcarbonate and fineness requirement 0.045mm screen over-sizes No more than 10%.
The chemical activator uses industrial sodium hydroxide with sodium hydroxide, the quality of the active ingredient in sodium hydroxide Percentage composition is not less than 96%;Paris white fineness requirement 0.045mm screen over-sizes are no more than 10%, the active ingredient in calcium carbonate Weight/mass percentage composition be not less than 85%;Sodium hydroxide is (3 with the suitable mass ratio of Paris white:7)~(4:6).
The light-weight aggregate is expanded perlite or expanded vermiculite, and particle diameter is 0.16~4.75mm, and density is 120~160kg/ m3
The foaming agent is aluminium powder cream, and the fineness 0.075mm screen over-sizes in aluminium powder cream are not more than 3.0%, the work of aluminium powder cream Property aluminium weight/mass percentage composition be not less than 85%.
The water is running water.
The preparation method of mineral polymer foam concrete, comprises the following steps:
Step 1, according to the mass fraction, 100 parts of presoma and 9~15 parts of chemical activator are mixed and stirred for 2~ 3min, obtain uniform binder materials;
Step 2,5~12 parts of light-weight aggregate is added in the mixing binder materials obtained to step 1, stir 3~5min Obtain the concrete dry powder compound containing light-weight aggregate;
Step 3,0.08~0.2 part of foaming agent and 60~80 parts of water are mixed and stirred for uniformly, to be added to step 2 In gained concrete dry powder compound, the foamed concrete of formation is poured into mould simultaneously immediately after quickly stirring 3~5min Sealing;
Step 4, foamed concrete is first subjected to room temperature maintenance, is then stripped and carries out natural curing in atmosphere, produce To the mineral polymer foam concrete for meeting to require.
The time of room temperature maintenance is 24h, and the natural curing time is 7d in air.
The present invention has the advantages that:
The mineral polymer foam concrete of the present invention, in terms of mass fraction, by 100 parts of presoma, 9~15 parts Chemical activator, 5~12 parts of light-weight aggregate, 0.08~0.2 part of foaming agent and 60~80 parts of water are made, manufactured mineral Polymer foamed concrete, using the mineral polymer foam concrete as inorganic heat preserving and heat insulation material, then cause inorganic heat preservation Heat-barrier material, which has, integrates lightweight, high-strength, the high combination property being incubated.
Further, the present invention is micro- using graining blast-furnace cinder micro-powder and circulating fluidized bed combustion ash with mineral polymer Powder is as presoma, by the use of the free calcium oxide in circulating fluidized bed combustion ash, anhydrous gypsum as expansion sources, dexterously gram Big, the easy to crack inherent shortcoming of chemi-excitation slag polymer shrink is taken.
Further, chemical activator of the present invention is sodium hydroxide with Paris white under the conditions of 70~90 DEG C, warp Liquid phase reactor 8~10 hours, the solid powder obtained after filtering drying grinding, therefore traditional caustic alkali, waterglass can be overcome The highly corrosive technical problem of exciting agent.
Embodiment
With reference to embodiment, the present invention is further described, as described below, be only to presently preferred embodiments of the present invention and , the not limitation to other forms of the present invention, any person skilled in the art possibly also with the disclosure above technology Content is changed to the equivalent example changed on an equal basis.It is every real without departing from the present invention program content, the technology of the foundation present invention Any simple modification or equivalent variations that example of verifying is made, all fall within protection scope of the present invention.
The mineral polymer foam concrete of the present invention obtains raw material (according to the mass fraction) composition:100 parts of presoma, 60~80 parts of 9~15 parts of chemical activator, 5~12 parts of light-weight aggregate, 0.08~0.2 part of foaming agent and running water.
Wherein, presoma is the mixed system of graining blast-furnace cinder micro-powder and circulating fluidized bed combustion coal solid sulfur clinker;Granulation Blast-furnace cinder micro-powder performance indications meet the requirement of S95 levels;It is calculated in mass percent, the oxygen in circulating fluidized bed combustion coal solid sulfur clinker Change calcium content requirement and be not more than 30%, sulfur trioxide content requirement is not more than 20%, circulating fluidized bed combustion coal solid sulfur clinker fineness 0.045mm screen over-sizes are not more than 12%;Graining blast-furnace cinder micro-powder and the suitable mass ratio of circulating fluidized bed combustion coal solid sulfur clinker (4:6)~(7:3).
Chemical activator is sodium hydroxide with Paris white under the conditions of 80 DEG C, through liquid phase reactor 8 hours, filtering drying powder The solid powder obtained after mill, solid powder fineness requirement 0.045mm screen over-sizes are not more than 10%;Sodium hydroxide used uses Technical grade (active ingredient is not less than 96%);Paris white fineness requirement 0.045mm screen over-sizes are not more than 10%, and calcium carbonate is effective Composition is not less than 85%;Sodium hydroxide is (3 with the suitable mass ratio of Paris white:7)~(4:6).
Light-weight aggregate is expanded perlite or expanded vermiculite, and particle diameter is 0.16~4.75mm, and density is 120~160kg/m3
Foaming agent is aluminium powder cream, and the fineness 0.075mm screen over-sizes in aluminium powder cream are not more than 3.0%, activated aluminum in aluminium powder cream Weight/mass percentage composition be not less than 85%.
The preparation method of mineral polymer foam concrete comprises the following steps:
Step 1, graining blast-furnace cinder micro-powder, circulating fluidized bed combustion coal solid sulfur clinker micro mist, chemical activator are pressed into quality Number is mixed and stirred for 2~3min and obtains uniform binder materials;
Step 2, the expanded perlite of certain mass number is added to step 1 and mixed in binder materials, stirring 3~ 5min obtains the concrete dry powder compound containing light-weight aggregate;
Step 3, the mixing water of the aluminium powder cream of certain mass number and appropriate number is mixed and stirred for uniformly, being added to In concrete dry powder compound obtained by step 2, it is poured into the mould of preparation and seals immediately after quickly stirring 3~5min;
Step 4, the foamed concrete room temperature by poly- polycondensation-restructuring-hardening of getting angry-solve is conserved into 12~24h, taken off Natural curing 7d~14d is met the mineral polymer foam concrete of requirement in mould, cutting, air.
The technical advantages of the present invention are that:Foam concrete, which is prepared, using mineral polymer solves lightweight, high-strength, Gao Bao Temperature is not easy the technical barrier coordinated;Using circulating fluidized bed combustion coal solid sulfur clinker micro mist part substitute graining blast-furnace cinder micro-powder as Presoma, overcome mineral polymer and shrink performance deficiency big, easy to crack;Eliminated using subcarbonate as chemical activator Traditional exciting agent highly corrosive harm such as caustic alkali, waterglass.Heat preserving and insulating material of the present invention is promoted the use of to realizing China's building energy conservation and building materials ecodevelopment are significant.
Embodiment 1
Raw material are weighed according to following masses number:40 parts of graining blast-furnace cinder micro-powder, circulating fluidized bed combustion coal solid sulfur ash 60 parts of slag, 15 parts of chemical activator, 12 parts of expanded perlite, 0.20 part of aluminium powder cream, 80 parts of water.
By the preparation method, batch mixing, stirring, slurrying, pour, conserve, being stripped, cutting, natural curing 7d obtains mineral Polymer foamed concrete.
Specifically preparation process is:
Step 1, by 40 parts of graining blast-furnace cinder micro-powder, 60 parts of circulating fluidized bed combustion coal solid sulfur clinker micro mist, 15 parts Chemical activator be mixed and stirred for 2~3min and obtain uniform binder materials;
Step 2,12 parts of expanded perlite is added to step 1 and mixed in binder materials, 3~5min of stirring is contained There is the concrete dry powder compound of light-weight aggregate;
Step 3,0.20 part of aluminium powder cream and 80 parts of mixing water are mixed and stirred for uniformly, being added to obtained by step 2 In concrete dry powder compound, it is poured into the mould of preparation and seals immediately after quickly stirring 3~5min;
Step 4, the foamed concrete room temperature by poly- polycondensation-restructuring-hardening of getting angry-solve is conserved into 24h, is stripped, cuts Cut, the mineral polymer foam concrete that natural curing is met requirement in 7 days in air.
The main performance index of mineral polymer foam concrete is made from the present embodiment:Dry density is 265kg/m3, Cubic compressive strength is 1.95MPa, thermal conductivity factor 0.066W/m.K, drying shrinkage value 0.22mm/m.
Embodiment 2
Raw material are weighed according to following masses number:70 parts of graining blast-furnace cinder micro-powder, circulating fluidized bed combustion coal solid sulfur ash 30 parts of slag, 12 parts of chemical activator, 10 parts of expanded perlite, 0.10 part of aluminium powder cream, 70 parts of water.
By the preparation method, batch mixing, stirring, slurrying, pour, conserve, being stripped, cutting, natural curing 7d obtains mineral Polymer foamed concrete.
Specifically preparation process is:
Step 1, by 70 parts of graining blast-furnace cinder micro-powder, 30 parts of circulating fluidized bed combustion coal solid sulfur clinker micro mist, 12 parts Chemical activator be mixed and stirred for 2~3min and obtain uniform binder materials;
Step 2,10 parts of expanded perlite is added to step 1 and mixed in binder materials, 3~5min of stirring is contained There is the concrete dry powder compound of light-weight aggregate;
Step 3,0.10 part of aluminium powder cream and 70 parts of mixing water are mixed and stirred for uniformly, being added to obtained by step 2 In concrete dry powder compound, it is poured into the mould of preparation and seals immediately after quickly stirring 3~5min;
Step 4, the foamed concrete room temperature by poly- polycondensation-restructuring-hardening of getting angry-solve is conserved into 24h, is stripped, cuts Cut, the mineral polymer foam concrete that natural curing is met requirement in 7 days in air.
The main performance index of mineral polymer foam concrete is made from the present embodiment:Dry density 395kg/m3, stand Cube compression strength 3.45MPa, thermal conductivity factor 0.076W/m.K, drying shrinkage value 0.20mm/m.
Embodiment 3
Raw material are weighed according to following masses number:50 parts of graining blast-furnace cinder micro-powder, circulating fluidized bed combustion coal solid sulfur ash 50 parts of slag, 9 parts of chemical activator, 10 parts of expanded perlite, 0.10 part of aluminium powder cream, 60 parts of water.
By the preparation method, batch mixing, stirring, slurrying, pour, conserve, being stripped, cutting, natural curing 7d obtains mineral Polymer foamed concrete.
Specifically preparation process is:
Step 1, by 50 parts of graining blast-furnace cinder micro-powder, 50 parts of circulating fluidized bed combustion coal solid sulfur clinker micro mist, 9 parts Chemical activator be mixed and stirred for 2~3min and obtain uniform binder materials;
Step 2,10 parts of expanded perlite is added to step 1 and mixed in binder materials, 3~5min of stirring is contained There is the concrete dry powder compound of light-weight aggregate;
Step 3,0.10 part of aluminium powder cream and 60 parts of mixing water are mixed and stirred for uniformly, being added to obtained by step 2 In concrete dry powder compound, it is poured into the mould of preparation and seals immediately after quickly stirring 3~5min;
Step 4, the foamed concrete room temperature by poly- polycondensation-restructuring-hardening of getting angry-solve is conserved into 24h, is stripped, cuts Cut, the mineral polymer foam concrete that natural curing is met requirement in 7 days in air.
The main performance index of mineral polymer foam concrete is made from the present embodiment:Dry density 476kg/m3, stand Cube compression strength 5.90MPa, thermal conductivity factor 0.082W/m.K, drying shrinkage value 0.19mm/m.
Embodiment 4
Raw material are weighed according to following masses number:40 parts of graining blast-furnace cinder micro-powder, circulating fluidized bed combustion coal solid sulfur ash 60 parts of slag, 15 parts of chemical activator, 9 parts of expanded perlite, 0.08 part of aluminium powder cream, 70 parts of water.
By the preparation method, batch mixing, stirring, slurrying, pour, conserve, being stripped, cutting, natural curing 7d obtains mineral Polymer foamed concrete.
Specifically preparation process is:
Step 1, by 40 parts of graining blast-furnace cinder micro-powder, 60 parts of circulating fluidized bed combustion coal solid sulfur clinker micro mist, 15 parts Chemical activator be mixed and stirred for 2~3min and obtain uniform binder materials;
Step 2,9 parts of expanded perlite is added to step 1 and mixed in binder materials, 3~5min of stirring is contained There is the concrete dry powder compound of light-weight aggregate;
Step 3,0.08 part of aluminium powder cream and 70 parts of mixing water are mixed and stirred for uniformly, being added to obtained by step 2 In concrete dry powder compound, it is poured into the mould of preparation and seals immediately after quickly stirring 3~5min;
Step 4, the foamed concrete room temperature by poly- polycondensation-restructuring-hardening of getting angry-solve is conserved into 24h, is stripped, cuts Cut, the mineral polymer foam concrete that natural curing is met requirement in 7 days in air.
The main performance index of mineral polymer foam concrete is made from the present embodiment:Dry density 580kg/m3, stand Cube compression strength 6.10MPa, thermal conductivity factor 0.105W/m.K, drying shrinkage value 0.19mm/m.
Embodiment 5
Raw material are weighed according to following masses number:55 parts of graining blast-furnace cinder micro-powder, circulating fluidized bed combustion coal solid sulfur ash 45 parts of slag, 12 parts of chemical activator, 10 parts of expanded perlite, 0.12 part of aluminium powder cream, 60 parts of water.
By the preparation method, batch mixing, stirring, slurrying, pour, conserve, being stripped, cutting, natural curing 7d obtains mineral Polymer foamed concrete.
Specifically preparation process is:
Step 1, by 55 parts of graining blast-furnace cinder micro-powder, 45 parts of circulating fluidized bed combustion coal solid sulfur clinker micro mist, 12 parts Chemical activator be mixed and stirred for 2~3min and obtain uniform binder materials;
Step 2,10 parts of expanded perlite is added to step 1 and mixed in binder materials, 3~5min of stirring is contained There is the concrete dry powder compound of light-weight aggregate;
Step 3,0.12 part of aluminium powder cream and 60 parts of mixing water are mixed and stirred for uniformly, being added to obtained by step 2 In concrete dry powder compound, it is poured into the mould of preparation and seals immediately after quickly stirring 3~5min;
Step 4, the foamed concrete room temperature by poly- polycondensation-restructuring-hardening of getting angry-solve is conserved into 24h, is stripped, cuts Cut, the mineral polymer foam concrete that natural curing is met requirement in 7 days in air.
The main performance index of mineral polymer foam concrete is made from the present embodiment:Dry density 655kg/m3, stand Cube compression strength 7.50MPa, thermal conductivity factor 0.128W/m.K, drying shrinkage value 0.21mm/m.
Embodiment 6
Raw material are weighed according to following masses number:60 parts of graining blast-furnace cinder micro-powder, circulating fluidized bed combustion coal solid sulfur ash 40 parts of slag, 12 parts of chemical activator, 10 parts of expanded perlite, 0.08 part of aluminium powder cream, 60 parts of water.
By the preparation method, batch mixing, stirring, slurrying, pour, conserve, being stripped, cutting, natural curing 7d obtains mineral Polymer foamed concrete.
Specifically preparation process is:
Step 1, by 60 parts of graining blast-furnace cinder micro-powder, 40 parts of circulating fluidized bed combustion coal solid sulfur clinker micro mist, 12 parts Chemical activator be mixed and stirred for 2~3min and obtain uniform binder materials;
Step 2,10 parts of expanded vermiculite is added to step 1 and mixed in binder materials, 3~5min of stirring is contained The concrete dry powder compound of light-weight aggregate;
Step 3,0.08 part of aluminium powder cream and 60 parts of mixing water are mixed and stirred for uniformly, being added to obtained by step 2 In concrete dry powder compound, it is poured into the mould of preparation and seals immediately after quickly stirring 3~5min;
Step 4, the foamed concrete room temperature by poly- polycondensation-restructuring-hardening of getting angry-solve is conserved into 24h, is stripped, cuts Cut, the mineral polymer foam concrete that natural curing is met requirement in 7 days in air.
The main performance index of mineral polymer foam concrete is made from the present embodiment:Dry density 785kg/m3, stand Cube compression strength 10.70MPa, thermal conductivity factor 0.147W/m.K, drying shrinkage value 0.32mm/m.
Embodiment 7
Raw material are weighed according to following masses number:60 parts of graining blast-furnace cinder micro-powder, circulating fluidized bed combustion coal solid sulfur ash 40 parts of slag, 12 parts of chemical activator, 5 parts of expanded perlite, 0.08 part of aluminium powder cream, 60 parts of water.
By the preparation method, batch mixing, stirring, slurrying, pour, conserve, being stripped, cutting, natural curing 7d obtains mineral Polymer foamed concrete.
Specifically preparation process is:
Step 1, by 60 parts of graining blast-furnace cinder micro-powder, 40 parts of circulating fluidized bed combustion coal solid sulfur clinker micro mist, 12 parts Chemical activator be mixed and stirred for 2~3min and obtain uniform binder materials;
Step 2,5 parts of expanded vermiculite is added to step 1 and mixed in binder materials, 3~5min of stirring is contained The concrete dry powder compound of light-weight aggregate;
Step 3,0.08 part of aluminium powder cream and 60 parts of mixing water are mixed and stirred for uniformly, being added to obtained by step 2 In concrete dry powder compound, it is poured into the mould of preparation and seals immediately after quickly stirring 3~5min;
Step 4, the foamed concrete room temperature by poly- polycondensation-restructuring-hardening of getting angry-solve is conserved into 24h, is stripped, cuts Cut, the mineral polymer foam concrete that natural curing is met requirement in 7 days in air.
The main performance index of mineral polymer foam concrete is made from the present embodiment:Dry density 785kg/m3, stand Cube compression strength 11.20MPa, thermal conductivity factor 0.150W/m.K, drying shrinkage value 0.32mm/m.

Claims (10)

1. a kind of mineral polymer foam concrete, it is characterised in that according to the mass fraction, be made up of following raw material:Presoma 60~80 parts of 100 parts, 9~15 parts of chemical activator, 5~12 parts of light-weight aggregate, 0.08~0.2 part of foaming agent and water.
2. a kind of mineral polymer foam concrete according to claim 1, it is characterised in that the presoma is granulation The mixture of blast-furnace cinder micro-powder and circulating fluidized bed combustion coal solid sulfur clinker, graining blast-furnace cinder micro-powder and circulating fluidized bed combustion coal The mass ratio of fluidized bed combustion coal ash/slag is (4:6)~(7:3).
A kind of 3. mineral polymer foam concrete according to claim 2, it is characterised in that graining blast-furnace cinder micro-powder Performance indications meet the requirement of S95 levels;It is calculated in mass percent, the calcium oxide content in circulating fluidized bed combustion coal solid sulfur clinker is little In 30%, sulfur trioxide content requirement is not more than 20%, and circulating fluidized bed combustion coal solid sulfur clinker fineness 0.045mm screen over-sizes are little In 12%.
4. a kind of mineral polymer foam concrete according to claim 1, it is characterised in that the chemical activator is Sodium hydroxide and Paris white are under the conditions of 70~90 DEG C, and through liquid phase reactor 8~10 hours, what is obtained after filtering drying grinding consolidated Body powder, solid powder fineness requirement 0.045mm screen over-sizes are not more than 10%.
5. a kind of mineral polymer foam concrete according to claim 4, it is characterised in that the chemical activator is used Sodium hydroxide uses industrial sodium hydroxide, and the weight/mass percentage composition of the active ingredient in sodium hydroxide is not less than 96%;Carbonic acid No more than 10%, the weight/mass percentage composition of the active ingredient in calcium carbonate is not less than calcium powder fineness requirement 0.045mm screen over-sizes 85%;The mass ratio of sodium hydroxide and Paris white is (3:7)~(4:6).
6. a kind of mineral polymer foam concrete according to claim 1, it is characterised in that the light-weight aggregate is expansion Perlite or expanded vermiculite, particle diameter are 0.16~4.75mm, and density is 120~160kg/m3
7. a kind of mineral polymer foam concrete according to claim 1, it is characterised in that the foaming agent is aluminium powder Cream, the fineness 0.075mm screen over-sizes in aluminium powder cream are not more than 3.0%, and the weight/mass percentage composition of activated aluminum is not less than in aluminium powder cream 85%.
8. a kind of mineral polymer foam concrete according to claim 1, it is characterised in that the water is running water.
9. a kind of method for preparing the mineral polymer foam concrete as described in claim 1-8 any one, its feature exist In comprising the following steps:
Step 1, according to the mass fraction, presoma and chemical activator are mixed and stirred for 2~3min, are uniformly gelled Material;
Step 2, light-weight aggregate is added in the mixing binder materials obtained to step 1,3~5min of stirring is obtained containing light-weight aggregate Concrete dry powder compound;
Step 3, foaming agent and water are mixed and stirred for uniformly, being added in concrete dry powder compound obtained by step 2, quickly The foamed concrete of formation is poured into mould and sealed immediately after 3~5min of stirring;
Step 4, foamed concrete is first subjected to room temperature maintenance, is then stripped and carries out natural curing in atmosphere, that is, expired The mineral polymer foam concrete required enough.
10. according to the method for claim 9, it is characterised in that the time of room temperature maintenance is 24h, natural curing in air Time is 7d.
CN201711041282.XA 2017-10-30 2017-10-30 A kind of mineral polymer foam concrete and preparation method Pending CN107746215A (en)

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CN110922109A (en) * 2019-12-13 2020-03-27 桂林理工大学 Coal mine waste geopolymer-based concrete and preparation method thereof
CN111003974A (en) * 2019-12-13 2020-04-14 桂林理工大学 Coal mine waste-based geopolymer cementing material and preparation method thereof

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CN110922109A (en) * 2019-12-13 2020-03-27 桂林理工大学 Coal mine waste geopolymer-based concrete and preparation method thereof
CN111003974A (en) * 2019-12-13 2020-04-14 桂林理工大学 Coal mine waste-based geopolymer cementing material and preparation method thereof

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Application publication date: 20180302