CN106396733A - Nano modified thermal insulation material prepared from waste foam concrete and preparation method thereof - Google Patents

Nano modified thermal insulation material prepared from waste foam concrete and preparation method thereof Download PDF

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Publication number
CN106396733A
CN106396733A CN201610784389.2A CN201610784389A CN106396733A CN 106396733 A CN106396733 A CN 106396733A CN 201610784389 A CN201610784389 A CN 201610784389A CN 106396733 A CN106396733 A CN 106396733A
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CN
China
Prior art keywords
foam concrete
insulation material
preparation
waste foam
nano
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610784389.2A
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Chinese (zh)
Inventor
龚静
石鲜明
李志鹏
张荣堂
李建芬
吴建林
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Wuhan Polytechnic University
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Wuhan Polytechnic University
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Filing date
Publication date
Application filed by Wuhan Polytechnic University filed Critical Wuhan Polytechnic University
Priority to CN201610784389.2A priority Critical patent/CN106396733A/en
Publication of CN106396733A publication Critical patent/CN106396733A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D7/00—Roof covering exclusively consisting of sealing masses applied in situ; Gravelling of flat roofs
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32—Mortars, 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses a nano modified thermal insulation material prepared from waste foam concrete. The thermal insulation material comprises the following raw materials in percentage by weight: 25 to 50% of fly ash, 10 to 30% of 425-cement, 25 to 50% of waste foam concrete powder, 0.9 to 2% of foaming agent, 0.7 to 1% of nano modifier, 1 to 2% of sodium borate, and 0.9 to 4% of naphthalene sulfonic acid-formaldehyde polymer. The invention also discloses a preparation method of the thermal insulation material. The provided A-grade thermal material, which is insufficient in the market, is prepared from industrial waste (fly ash) and disqualified waste foam concrete, which severely pollute the environment. Good economic benefits and environmental benefits can be generated. Moreover, the operation is simple and convenient. The thermal insulation material is convenient for construction, can be used to prepare inner/outer thermal insulation walls, A-grade thermal insulation plates, roof insulation layers, and the like, and can also be made into fabricated inner/outer wallboards.

Description

Insulation material of nano modification waste foam concrete preparation and preparation method thereof
Technical field
The present invention relates to building material technical field, specifically a kind of insulation of nano modification waste foam concrete preparation Material and preparation method thereof.
Background technology
Before the wall heat insulation material of China mostly using expanded polystyrene (EPS) be EPS, extruded polystyrene be XPS and poly- Urethane foam is the organic materials such as PU although these organic materials have a lot of advantage such as lightweight, heat-insulated, easy processing, but its cause Life shortcoming is inflammable, occurs intensity of a fire during fire can spread rapidly, produces poisonous dense smoke in a large number, difficulty of putting out a fire to save life and property.Large-scale fire Fully expose the huge contradiction of such building heat preservation and Building Fire Protection, Fire-Fighting Bureau under the Ministry of Public Security's clear stipulaties " are protected outside civil buildings Adiabator adopts the material that combustibility is A level ".The existing A level insulation material current production rate being applied to building heat preservation of China is only 0.2% can be met.
Now as the fly ash foam concrete of one of heat insulating inorganic material, so that it is high-strength, lightweight, do not fire and valency Honest and clean feature, by favor and the accreditation of consumer, but the impact due to temperature, humidity and raw material, even if the life of same batch The foam concrete producing, its quality is also not quite similar, and during product sampling observation, intensity and heat conductivity are non-compliant Foam concrete can be identified as defect ware, and generally this defect ware can be taken as building waste to take away and fill the meeting quilt even having Directly abandon and environment is impacted.By to rejected fly ash foam concrete, flyash and cement main chemical compositions Carry out contrast and find (being shown in Table 1), the main component of rejected fly ash foam concrete and content are between flyash and cement Between.
Table 1 flyash is compared (%) with cement main chemical compositions
Chemical composition SiO2 A12O3 Fe2O3 CaO MgO
Ordinary fly ash 40～60 17～35 2～5 L～10 0.5～2
Waste foam concrete 30～50 10～25 3～15 10～40 1～2
Cement 21.7 4.9 5.3 62.4 3.1
Prepare foam concrete with flyash and cement by foaming technique to have been developed and promote, due to discarded bubble Foam concrete composition is similar to it, therefore considers to pass through nano modification technology, and using nano imvite, flyash, cement is to useless Abandon foam concrete and carry out regeneration, the excellent A level insulation material of processability.
Content of the invention
It is an object of the invention to provide a kind of insulation material of nano modification waste foam concrete preparation and its preparation Method, to solve the problems, such as to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme：
The insulation material of nano modification waste foam concrete preparation, the raw material according to mass percent includes：Flyash 25-50%, 425 cement 10-30%, waste foam concrete powder 25-50%, foaming agent 0.9-2%, nano modifier 0.7- 1%th, sodium borate 1-2%, naphthalenesulfonateformaldehyde formaldehyde high polymer 0.9-4%.
As the further scheme of the present invention：Described nano modifier is nano imvite.
As the present invention further scheme：Described foaming agent is one of AEO and AOS or two kinds of combinations.
The preparation method of the insulation material of described nano modification waste foam concrete preparation, step is as follows：
1) foaming agent, nano modifier and sodium borate are weighed, will be soluble in water to foaming agent, nano modifier and sodium borate, Make foam solution；
2) weigh remaining raw material, and remaining raw material be sequentially sent in blender, stir and add foam solution, After stirring, obtain serosity；
3) serosity is poured into molding in grinding tool, maintenance 3 days under room temperature, normal pressure, often wet environment, obtain semi-finished product；
4) semi-finished product are cut into the plate of given size according to dimensional requirement, and in step 3) in the environment of continue maintenance 28 My god, you can.
As the further scheme of the present invention：Step 1) in amount of water be whole raw material gross masses 18-25%, and institute The water temperature of the water adding is 50-90 DEG C.
The insulation material of described nano modification waste foam concrete preparation can be used in preparing to be protected outside building construction body of wall Warm A level warming plate.
The insulation material of described nano modification waste foam concrete preparation can be used in preparing in building construction body of wall to be protected Warm A level warming plate.
The insulation material of described nano modification waste foam concrete preparation can be used in preparing building construction thermal insulation of roof Layer.
The insulation material of described nano modification waste foam concrete preparation can be used in process and assemble formula inside and outside wall board.
The insulation material of described nano modification waste foam concrete preparation can be used in pouring the cast-in-place self-insurance of building construction Warm body of wall.
Compared with prior art, the invention has the beneficial effects as follows：
1st, the main material that the present invention adopts is that environment is caused with the industrial waste flyash of severe contamination and discarded bubble They are modified by foam concrete using nano imvite, are foamed by AEO and AOS, under room temperature, normal pressure, normal wet environment Produce market A level insulation material in short supply, both can consume substantial amounts of flyash and discarded foam concrete, ecological to improving Environment, protection soil and soil reasonable using playing huge effect；The A level insulation in short supply to alleviating construction market simultaneously Material, realize national energy-saving reduce discharging state basic policy and solve building heat preservation technology have certain effect, have good economic benefit and Environmental benefit.
2nd, the present invention adopts non-evaporating pressure technology, energy saving in process of production；The strength of materials can be different by adding The nano material of dosage is improved, foamed time is unstable and maintenance processes in Local Cracking can be worked in coordination with by nano material Reaction is improved, easy and simple to handle, easily implements.
3rd, the present invention is applied to preparation building construction body of wall inside and outside insulation A level warming plate, roofing insulation, cast-in-place self-insurance Warm body of wall be directly processed into inside and outside wallboard of assembled etc., applied widely.
Specific embodiment
With reference to specific embodiment, technical scheme is described in more detail.
Embodiment 1
In the embodiment of the present invention, a kind of insulation material of nano modification waste foam concrete preparation, with flyash and useless Abandoning foam concrete powder is major ingredient, covers special soil as modifying agent with nanometer, with AOS as foaming agent, with 425 cement, sodium borate, naphthalene Sulfonic acid and formaldehyde high polymer is additive.Weigh foaming agent, nano modifier and sodium borate, by foaming agent, nano modifier and boron Sour sodium is soluble in water, makes foam solution, and in order to accelerate response speed, water temperature controls at 50 DEG C；Weigh remaining raw material, and by its Remaining raw material is sequentially sent in blender, stirs and adds foam solution, after stirring, obtains serosity；Serosity is fallen Enter molding in grinding tool, for non-evaporating pressure, save energy, reduce energy consumption, maintenance 3 days, obtains under room temperature, normal pressure, often wet environment Obtain semi-finished product；Semi-finished product are cut into the plate of given size according to dimensional requirement, and continue maintenance 28 days under above-mentioned environment, that is, Can.
In the embodiment of the present invention, the quality of each raw material is as shown in table 2.
Table 2 embodiment 1 proportioning raw materials table
Title material Quality (g)
Flyash 400
Nano imvite 8
Waste foam concrete powder 300
AOS 10
425 cement 300
Sodium borate 16
Naphthalenesulfonateformaldehyde formaldehyde high polymer 10
Water 250
Maintenance under room temperature, normal pressure, normal wet environment, after being dried, with reference to JGJ114-2004《External wall outer insulation engineering technology Code》Standard carries out technical performance test, and test result is as shown in table 3.
Table 3 embodiment 1 performance test table
Detection project Unit Measured data
Dry density kg/m3 285
Heat conductivity W/m.k 0.060
Tensile strength MPa 0.18
Comprcssive strength MPa 0.59
Acoustical reduction coefficient dB 44
Linear shrinkage % 0.12
Water absorption rate (V/V) % 8.5
Moisture content % 4.3
Coefficient of softing -- 0.85
Combustibility rank -- A1
Embodiment 2
In the embodiment of the present invention, a kind of insulation material of nano modification waste foam concrete preparation, with flyash and useless Abandoning foam concrete powder is major ingredient, covers special soil as modifying agent with nanometer, with AOS as foaming agent, with 425 cement, sodium borate, naphthalene Sulfonic acid and formaldehyde high polymer is additive.Weigh foaming agent, nano modifier and sodium borate, by foaming agent, nano modifier and boron Sour sodium is soluble in water, makes foam solution, and in order to accelerate response speed, water temperature controls at 60 DEG C；Weigh remaining raw material, and by its Remaining raw material is sequentially sent in blender, stirs and adds foam solution, after stirring, obtains serosity；Serosity is fallen Enter molding in grinding tool, for non-evaporating pressure, save energy, reduce energy consumption, maintenance 3 days, obtains under room temperature, normal pressure, often wet environment Obtain semi-finished product；Semi-finished product are cut into the plate of given size according to dimensional requirement, and continue maintenance 28 days under above-mentioned environment, that is, Can.
In the embodiment of the present invention, the quality of each raw material is as shown in table 4.
Table 4 embodiment 2 proportioning raw materials table
Title material Quality (g)
Waste foam concrete powder 520
Nano imvite 9
Flyash 300
AOS 10
425 cement 180
Sodium borate 16
Naphthalenesulfonateformaldehyde formaldehyde high polymer 14
Water 250
Maintenance under room temperature, normal pressure, normal wet environment, after being dried, with reference to JGJ114-2004《External wall outer insulation engineering technology Code》Standard carries out technical performance test, and test result is as shown in table 5.
Table 5 embodiment 2 performance test table
Detection project Unit Measured data
Dry density kg/m3 267
Heat conductivity W/m.k 0.056
Tensile strength MPa 0.16
Comprcssive strength MPa 0.57
Acoustical reduction coefficient dB 46
Linear shrinkage % 0.10
Water absorption rate (V/V) % 8.8
Moisture content % 5.4
Coefficient of softing -- 0.83
Combustibility rank -- A1
Embodiment 3
In the embodiment of the present invention, a kind of insulation material of nano modification waste foam concrete preparation, with flyash and useless Abandoning foam concrete powder is major ingredient, covers special soil as modifying agent with nanometer, with AOS as foaming agent, with 425 cement, sodium borate, naphthalene Sulfonic acid and formaldehyde high polymer is additive.Weigh foaming agent, nano modifier and sodium borate, by foaming agent, nano modifier and boron Sour sodium is soluble in water, makes foam solution, and in order to accelerate response speed, water temperature controls at 70 DEG C；Weigh remaining raw material, and by its Remaining raw material is sequentially sent in blender, stirs and adds foam solution, after stirring, obtains serosity；Serosity is fallen Enter molding in grinding tool, for non-evaporating pressure, save energy, reduce energy consumption, maintenance 3 days, obtains under room temperature, normal pressure, often wet environment Obtain semi-finished product；Semi-finished product are cut into the plate of given size according to dimensional requirement, and continue maintenance 28 days under above-mentioned environment, that is, Can.
In the embodiment of the present invention, the quality of each raw material is as shown in table 6.
Table 6 embodiment 3 proportioning raw materials table
Title material Quality (g)
Flyash 510
Nano imvite 10
Waste foam concrete powder 370
AOS 11
425 cement 120
Sodium borate 16
Naphthalenesulfonateformaldehyde formaldehyde high polymer 32
Water 250
Maintenance under room temperature, normal pressure, normal wet environment, after being dried, with reference to JGJ114-2004《External wall outer insulation engineering technology Code》Standard carries out technical performance test, and test result is as shown in table 7.
Table 7 embodiment 3 performance test table
Detection project Unit Measured data
Dry density kg/m3 255
Heat conductivity W/m.k 0.053
Tensile strength MPa 0.15
Comprcssive strength MPa 0.51
Acoustical reduction coefficient dB 48
Linear shrinkage % 0.13
Water absorption rate (V/V) % 9.2
Moisture content % 5.8
Coefficient of softing -- 0.81
Combustibility rank -- A1
The main material that the present invention adopts is that environment is caused with the industrial waste flyash of severe contamination and discarded foam They are modified by concrete using nano imvite, are foamed by AEO and AOS, raw under room temperature, normal pressure, normal wet environment Produce market A level insulation material in short supply, both can consume substantial amounts of flyash and discarded foam concrete, the ecological ring to improvement Border, protection soil and soil reasonable using playing huge effect；The A level thermal insulating material in short supply to alleviating construction market simultaneously Material, realizes national energy-saving reduction of discharging state basic policy and solution building heat preservation technology has certain effect, and has good economic benefit and ring Protect benefit.The present invention adopts non-evaporating pressure technology, energy saving in process of production；The strength of materials can be by adding various dose Nano material be improved, foamed time is unstable and maintenance processes in Local Cracking can pass through nano material concerted reaction It is improved, easy and simple to handle, easily implement.The present invention is applied to preparation building construction body of wall inside and outside insulation A level insulation Plate, roofing insulation, cast-in-situ self-heat preservation wall be directly processed into inside and outside wallboard of assembled etc., applied widely.
Above the better embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned embodiment party Formula, in the ken that one skilled in the relevant art possesses, can also be on the premise of without departing from present inventive concept Various changes can be made.

Claims (10)

1. the insulation material of nano modification waste foam concrete preparation is it is characterised in that raw material bag according to mass percent Include：Flyash 25-50%, 425 cement 10-30%, waste foam concrete powder 25-50%, foaming agent 0.9-2%, nanometer Modifying agent 0.7-1%, sodium borate 1-2%, naphthalenesulfonateformaldehyde formaldehyde high polymer 0.9-4%.
2. the insulation material of nano modification waste foam concrete according to claim 1 preparation is it is characterised in that described Nano modifier is nano imvite.
3. the insulation material of nano modification waste foam concrete according to claim 2 preparation is it is characterised in that described Foaming agent is one of AEO and AOS or two kinds of combinations.
4. a kind of preparation side of the described insulation material of nano modification waste foam concrete preparation as arbitrary in claim 1-3 Method is it is characterised in that step is as follows：
1) foaming agent, nano modifier and sodium borate are weighed, will be soluble in water to foaming agent, nano modifier and sodium borate, make Foam solution；
2) weigh remaining raw material, and remaining raw material is sequentially sent in blender, stir and add foam solution, stirring After uniformly, obtain serosity；
3) serosity is poured into molding in grinding tool, maintenance 3 days under room temperature, normal pressure, often wet environment, obtain semi-finished product；
4) semi-finished product are cut into the plate of given size according to dimensional requirement, and in step 3) in the environment of continue maintenance 28 days, ?.
5. the preparation method of the insulation material of nano modification waste foam concrete preparation according to claim 4, it is special Levy and be, step 1) in amount of water be whole raw material gross masses 18-25%, and the water temperature of the water being added is 50-90 DEG C.
6. the insulation material preparation building construction of described nano modification waste foam concrete preparation as arbitrary in claim 1-3 Purposes in outer wall heat insulating A level warming plate.
7. the insulation material of described nano modification waste foam concrete preparation as arbitrary in claim 1-3 is built preparing house Purposes in walling internal insulation A level warming plate.
8. the insulation material of described nano modification waste foam concrete preparation as arbitrary in claim 1-3 is built preparing house Build the purposes in roofing insulation.
9. the insulation material of described nano modification waste foam concrete preparation as arbitrary in claim 1-3 is in process and assemble formula Purposes in inside and outside wall board.
10. the insulation material of described nano modification waste foam concrete preparation as arbitrary in claim 1-3 is pouring house Purposes in building cast-in-situ self heat insulation wall.
CN201610784389.2A 2016-08-31 2016-08-31 Nano modified thermal insulation material prepared from waste foam concrete and preparation method thereof Pending CN106396733A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111364586A (en) * 2020-03-18 2020-07-03 广州众粤市政园林设计工程有限公司 Construction method of road drainage pipeline

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104326765A (en) * 2014-10-21 2015-02-04 武汉轻工大学 Nano-modified heat-insulation sound-insulation fire-proof pulverized fuel ash material and preparation method thereof
CN105271860A (en) * 2015-11-03 2016-01-27 浙江工业大学 Resource utilization method of foam concrete plate residues

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104326765A (en) * 2014-10-21 2015-02-04 武汉轻工大学 Nano-modified heat-insulation sound-insulation fire-proof pulverized fuel ash material and preparation method thereof
CN105271860A (en) * 2015-11-03 2016-01-27 浙江工业大学 Resource utilization method of foam concrete plate residues

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111364586A (en) * 2020-03-18 2020-07-03 广州众粤市政园林设计工程有限公司 Construction method of road drainage pipeline

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Application publication date: 20170215