CN103359997A - Nano foam concrete, reinforced thermal insulation wallboard and preparation method of wallboard - Google Patents
Nano foam concrete, reinforced thermal insulation wallboard and preparation method of wallboard Download PDFInfo
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Abstract
The invention belongs to the technical field of building materials and construction, and relates to nano foam concrete, a reinforced thermal insulation wallboard and a production and preparation method thereof. The nano foam concrete comprises the following components in parts by weight: 100 parts of cement, 0.1-5 parts of oil coke desulfurization ash, 0.012 part of waterproof agent, 10-30 parts of fly ash, 0.1-6 parts of superplasticizer, 50-200 parts of water, 1-20 parts of foaming agent and 0.01-5 parts of nano wave absorbing agent. Therefore, when the wallboard product with the nano foam concrete embedded with the steel wire mesh is used for the concrete-based enclosure walls of high-grade buildings, such as airports, docks, navigation marks, television stations, receiving stations, scientific research departments for preventing electromagnetic wave interference, precision instrument factories, national security units and the like, the wallboard product can ensure the most basic physical mechanics, heat preservation and heat insulation performance and has the noise reduction and sound insulation capabilities.
Description
Technical field
The invention belongs to material of construction and technical field of construction, relate to a kind of nanometer foam concrete and reinforcement heat-insulation wall plate and preparation method.
Background technology
The foamed concrete that grew up in recent years provides new selection for energy saving and environment friendly materials for wall, Chinese patent such as bulletin on August 5th, 2009, publication number is CN201284546, and it discloses a kind of foam concrete sound-insulating heat-preserving cushion coat that is set directly on the floor gap concrete layer.Such as on May 23rd, 2012
The Chinese patent of bulletin, notification number is CN202227526, it discloses a kind of rising between can the framework in building construction and has filled or the light high-intensity foam cement building wall body of compartmentation.
Some scholars attempt in cement admixture active admixture, microscopic fibers (glass fibre, carbon fiber,
Trevira, polypropylene fibre etc.) or/and short solidifying hardening accelerator obtains the foam concrete wall of less dense.
Chinese patent such as Granted publication on the 4th July in 2012, notification number is CN101913900, it discloses a kind of foamed concrete and preparation method, and it mixes foamed concrete piece and heat preservation plate material that ore powder, flyash, water-resisting agent, polypropylene fibre and auxiliary material obtain a kind of high-strength light again.Its defective is: the fiber in the used constituent materials is the micron order polymer fiber material, and it will hang down than the less nanofiber of fineness as foam nucleator ability, and corresponding foam toughness on every side also will be hanged down.
On September 19th, 2012 disclosed Chinese patent, publication number is CN102674881A, it discloses a kind of suction ripple foamed concrete and preparation method thereof, the suction ripple foamed concrete that a kind of technique is simple, density of material is low, absorbing property is good that its multiple water mixing mud, pneumatogen, wave absorbing agent, high-efficiency water-reducing agent of poly-carboxylic acid and water obtain.Its defective is: do not consider in this application that wave absorbing agent may cause the slow setting of foamed concrete slurry, and then the stability of reduction foam, do not consider wave absorbing agent, especially nano wave-absorption agent, as the one-tenth nuclear consitution of foamed concrete, do not take into full account the environmental benefit of antibody long-pending contractility, damping shock proof ability and the solid waste recycling therein of hardened foam concrete material necessity simultaneously.
Summary of the invention
Technique effect of the present invention can overcome defects, a kind of nanometer foam concrete is provided, it is than the microscopic fibers nucleator, have less diameter, higher specific surface area, and the nanofiber (particle) with unique nanometer small-size effect just can form a large amount of one-tenth complex hearts when few additive very, so make the concrete pore structure of corresponding foam evenly, mechanical property and heat-proof quality excellence.Wherein metal species/carbon class/Graphene class nanofiber (micro mist) also has the hollow multilayer structure, and conduction is or/and therefore magnetic property can develop into it improvement of damping component and the nano wave-absorption agent of foamed concrete matrix simultaneously.
For achieving the above object, nanometer foam concrete of the present invention adopts following technical scheme: it comprises following component by weight ratio: 100 parts of cement, 0.1-5 part oil coke desulfurization ash, 0.01-2 part water-resisting agent, 10-30 part flyash, 0.1-6 part superplasticizer, 50-200 part water, 1-20 part whipping agent, the agent of 0.01-5 part nano wave-absorption.
Make up the nano wave-absorption agent that is scattered in nanometer foam concrete and the reinforcement heat-insulation wall plate goods through whipping agent and superplasticizer among the present invention, on the one hand, have that specific surface area is large, dangling bonds is many, easily produce multiple scattering, under the electromagnetic field radiation effect, can cause the aggravation of atom, electron motion and magnetize, make electromagnetic energy more effectively be converted into heat energy, produced strong suction wave effect; On the other hand, when quantum size effect can make electronic level that division occurs, the energy level spacing of division was in the energy level scope of microwave, forms new suction ripple passage; Again on the one hand, have larger saturated magnetic strength, high magnetic hysteresis loss and coercive force, so produce that eddy-current loss is high, Curie temperature and use temperature is high, inhale the performances such as wave frequency is wide.Microbubble in conjunction with disperse effectively reduces foamed concrete density, specific acoustic resistance again, and produces the cavity resonance effect; Embedded woven wire has shielding/electromagnetic wave absorption effect; The most at last so that these nanometer foam concrete reinforcement heat-insulation wall plate goods have absorption band wide, compatible good, quality light and the characteristics such as thin thickness, satisfies well the requirement of radar-wave absorbing goods " thin, light, wide, strong ".
Meanwhile, hollow, the multilayered structure of the nano wave-absorption agent uniqueness among the present invention will make it also have little distortion-slippage power consumption effect, fiber and matrix to take off the mechanical force that glutinous slippage and crack deflection consume energy-heat dissipation effect; A large amount of sealing microbubbles in conjunction with disperse in the goods have good dislocation deformation power consumption effect again; Make the most at last this nanometer foam concrete and reinforcement heat-insulation wall plate goods have good damping energy dissipation performance.
The essential mineral composition is CaO, Ca (OH) among the present invention
2, CaSO
4PCDAD can produce a large amount of hydration heat when after levigate, adding water, necessary foaming thermal source condition and alkaline environment is provided respectively for whipping agent and the slurry of relevant nanometer foamed concrete, and then can play short solidifying early strong and steady bubble effect, simultaneously its CaSO to the nanometer foam concrete
4Component in conjunction with crystal water after with certain micro-expansibility, and then effectively compensation because CaO, Ca (OH)
2The volumetric shrinkage that exists behind the hydration and hardening guarantees that the nanometer foam concrete material overall volume shrinkage value after the sclerosis is less, and foam stabilization and intensity are higher.
Solid or hollow glass microbead micron order flyash component effective thickening foamed concrete slurry on the one hand among the present invention, the plastic shrinkage of reduction foamed concrete slurry; On the other hand, can change the nano wave-absorption agent and the bonding of the matrix that hardens-slippage interfacial characteristics, increase the crack deflection path of fiber when the matrix Fracture.
Along with the increase of the regional high-sulpur crude quantity such as China oil refining industry processing import Middle East, the PCDAD byproduct that petrochemical refining's industry adopts the lime powder desulfurization technology to generate has accounted for the 25-30% of refinery coke ultimate production.The PCDAD main component is dehydrated gyp-and superfluous lime, these two kinds of mineral be respectively when producing cement important source material with transfer solidifying component, have good gelling characteristic, especially levigate after.Therefore here, levigate PCDAD is transferred solidifying component as the slurry of foamed concrete.
Levigate PCDAD is used as the setting accelerator of foamed concrete slurry to improve the stability of foam in slip; The dispersion agent that serves as the nano wave-absorption agent such as carbon nanofiber (CNFs), Graphene, graphene oxide (GO), nano level carbon black, nano level nickel powder, nano grade iron powder, graphene oxide grafting carbon nanotube (GO-CNTs), graphene oxide grafting carbon nanofiber (GO-CNFs), graphene oxide grafting hydroxyl nickel powder (GO-HN) or/and graphene oxide graft carbonyl iron powder (GO-CI) with whipping agent (combination cement superplasticizer); Guaranteeing to utilize its hollow structure feature and chirality electromagnetic performance, to improve damping shock proof performance and the electromagnetic wave shielding/absorptive character of foamed concrete on the basis that the nano wave-absorption agent improves the foamed concrete basic mechanical properties as nucleator simultaneously.Final development is a kind of for the suction ripple energy-dissipating type nanometer foam concrete of top-grade building and the heat-insulation wall plate goods of embedded woven wire, realizes simultaneously the environmental benefit that this solid waste resource recovery of oil coke desulfurization ash is recycled.
Another object of the present invention provides the concrete reinforcement heat-insulation wall plate of the above-mentioned nanometer foam of a kind of employing, comprises the nanometer foam concrete layer, its built-in steel wire mesh frame, and the nanometer foam concrete layer is pasted water-fast mask paper in upper and lower surface; Carry out the piece interlocking by steel wire mesh frame end extension and the mutual interlock of grout filler that contains wave absorbing agent between the adjacent wallboard.
Be provided with common heat-insulation wall plate between nanometer foam concrete layer and the lower water-fast mask paper, the nanometer foam concrete layer is sticky deposited on the common heat-insulation wall plate, and lower water-fast mask paper sticks on the lower surface of common heat-insulation wall plate, the built-in steel wire mesh frame of common heat-insulation wall plate.
Another object of the present invention provides a kind of preparation method of nanometer foam concrete reinforcement heat-insulation wall plate, comprises the steps:
(1) by weight ratio 0.05-5 part superplasticizer is dissolved in 45-150 part water, add again the agent of 0.01-5 part nano wave-absorption, and carry out 0-1.5 hour ultrasonication, add again 5-20 part whipping agent, then with stirrer or the prefabricated foaming in 1-5 minute of cement foam maker high-speed stirring, form nano wave-absorption agent-whipping agent-superplasticizer foam system;
(2) simultaneously, the oil coke desulfurization ash that 0.1-5 part is levigate, 0.01-2 part water-resisting agent, 0.05-1 part superplasticizer, 5-50 part water, 10-30 part flyash, 100 parts of cement mix formation water-resisting agent-flyash-cement slurry system with stirrer;
(3) then the nano wave-absorption agent-whipping agent in the step (1)-superplasticizer foam system is mixed in water-resisting agent-flyash in the step (2)-cement slurry system, stir evenly at a slow speed rear paving rapidly by in the shape and size mould of actual demand design or on the common heat-insulation wall plate, be provided with steel wire mesh frame in mould or the common heat-insulation wall plate, the quiet 1-30 of stopping minute to realize possible continuation foaming, maintenance extremely is scheduled to the length of time under the normal curing condition afterwards, moulding nanometer foam concrete product;
(4) the nanometer foam concrete product after step (3) demoulding is dry and cleaning, respectively paste the water-fast mask paper of one deck same size specification in upper and lower surface, and continue under the normal curing condition maintenance to 28d length of time, namely get nanometer foam concrete reinforcement heat-insulation wall plate goods.
The normal curing condition is 22 ± 3 ℃ of temperature, relative humidity RH 〉=90%.
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, described cement is silicate cement, a kind of in aluminate cement, the aluminosulfate cement.
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, described PCDAD is the dehydrated gyp-CaSO that petrochemical refining's industry adopts the lime powder desulfurization technology to generate
4With lime CaO be the byproduct of main component.
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, described flyash is " flyash that is used for cement and concrete " (GB/T1596-2005) I level flyash of middle regulation.
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, the clean water that described water (GB/T17671-1999) is stipulated for satisfying " Test method for strength of hydraulic cement mortar ".
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, described superplasticizer (nano wave-absorption agent dispersion aids) is the one or more combination in polycarboxylate high-efficiency water-reducing agent, aliphatic high-efficiency water reducing agent, Amino-sulfonic Acid-based Water-reducer, melamine resin series high-efficiency water-reducing agent, the naphthalene series high-efficiency water-reducing agent.
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, described whipping agent (nano wave-absorption agent dispersion aids) is a kind of in Sodium dodecylbenzene sulfonate (SDBS) chemical foaming agent, modification tea saponin class whipping agent, the animal proteinum class whipping agent.
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, described nano wave-absorption agent be carbon nanofiber (CNFs), Graphene, graphene oxide (GO), nano level carbon black, nano level nickel powder, nano grade iron powder, graphene oxide grafting carbon nanotube (GO-CNTs), graphene oxide grafting carbon nanofiber (GO-CNFs), graphene oxide grafting hydroxyl nickel powder (GO-HN) or/with graphene oxide graft carbonyl iron powder (GO-CI) in a kind of or several mixing wherein.
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, described water-resisting agent is a kind of in stearates water-resisting agent, silicone based water-resisting agent, the polymer latex class water-resisting agent.
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, the grid of described steel wire mesh frame is (10-50) mm*(10-50) mm rectangle or rhombus grid, decoration form is single-layer type or wallboard top and bottom two-layer equation in the middle of the wallboard.
In above-mentioned nanometer foam concrete and the reinforcement heat-insulation wall plate goods, described water-fast mask paper is for further improving wallboard bending resistance, shock resistance, water resistance, and can with the mask paper of wallboard goods upper and lower surface secure bond.
Described common heat-insulation wall plate is a kind of in pearlstone class, glass bead class, sepiolite class, rock wool class, the foamed concrete class.
Therefore, the wallboard goods of the embedded woven wire of nanometer foam concrete of the present invention are used near airport, harbour, navigation mark, television station and the receiving station or during the high-grade building concrete base retaining walls such as Tempest of scientific research department, precision instrument factory and national secret unit that anti electromagnetic wave disturbs, guarantee on the one hand the most basic physical mechanics, thermal and insulating performance, also can have the noise reduction sound insulation capabilities on the one hand, also can effectively prevent electromagnetic interference and pollution on the one hand again, alleviate the harm that electromagnetic radiation brings building interior personnel, demonstrate good application prospect.
Description of drawings
Fig. 1 rabbets schematic diagram between the nanometer foam concrete of the embodiment of the invention 1 and reinforcement heat-insulation wall plate goods section and wallboard;
Fig. 2 rabbets schematic diagram between the nanometer foam concrete of the embodiment of the invention 2 and reinforcement heat-insulation wall plate goods section and wallboard;
Among the figure: 1. nanometer foam concrete topping; 1a. fiber-like nano wave-absorption agent; 1b. microbubble; 2. steel wire mesh frame; 3. water-fast mask paper; 4. grout filler; 5. common heat-insulation wall plate.
Embodiment
As shown in Figure 1, nanometer foam concrete of the present invention and reinforcement heat-insulation wall plate goods comprise the steel wire mesh frame 2 of nanometer foam concrete layer 1, the formation of top and bottom two-layer equation and water-fast mask paper 3 and the interlocking grout filler 4 of upper and lower surface.Described nanometer foam concrete layer also comprises distribution fiber-like nano wave-absorption agent 1a and microbubble 1b wherein except comprising maturing.
Nanometer foam concrete product preparation process is as follows:
(1) 0.5 part of polycarboxylic acid superplasticizer MPEG is dissolved in 60 parts of water, the carbon nanofiber CNFs that adds again 0.05 part of diameter 60-100nm, length 6-30 μ m, and carry out 1 hour ultrasonication (ultrasonic power 100W, ultrasonic frequency 40kHz, every ultrasonic 50s suspends 10s, totally 60 times), then add 6 parts of whipping agent SDBS, and rapid stirring prefabricated foaming in 3 minutes in the glue sand agitator, nano wave-absorption agent-whipping agent-superplasticizer foam system formed;
(2) meanwhile, in addition 1 part of levigate PCDAD, 0.1 part of waterproofing agent of organosilicon, 0.3 part of superplasticizer MPEG, 20 parts of water, 15 parts of I level flyash, 100 parts of No. 525 aluminosulfate cements are mixed at a slow speed formation water-resisting agent-flyash-cement slurry system with the glue sand agitator;
(3) step (1) nano wave-absorption agent-whipping agent-superplasticizer foam system is mixed in step (2) water-resisting agent-flyash-cement slurry system, stir evenly at a slow speed the rear length that paves rapidly * wide * high for 1440mm * 580mm * 80mm, in the mould of the good steel wire mesh frame of frame (the two side ends detail structure as shown in Figure 1), quietly stop continuing in 15 minutes foaming, afterwards under normal curing (22 ± 3 ℃, relative humidity RH 〉=90%) condition maintenance to the 24h demoulding.
(4) the nanometer foam concrete product after step (3) demoulding is dry and cleaning, respectively paste the water-fast mask paper of last layer in upper and lower surface, and continue under the normal curing condition maintenance to 28d length of time, namely get nanometer foam concrete and reinforcement heat-insulation wall plate goods shown in Fig. 1 right side.
Method with reference to GB/T11969-2008 " steam-pressing aero-concrete method for testing performance ", GB/T17671-1999 " Test method for strength of hydraulic cement mortar ", GB/T10294-2008 " the mensuration protective heat plate method of Technology of Steady State Thermal Resistance of Thermal Insulating Material and related characteristics ", JC/T603-2004 " cement mortar dry shrinkage test method " regulation records dry density, volume water absorption rate, ultimate compression strength, the thermal conductivity of relevant nanometer foamed concrete and reinforcement heat-insulation wall plate goods sample respectively, and contract with dry rate is respectively 373kg/m
3, 3.2%, 2.16MPa, 0.0537W/m.k.Structural damping ratio (dissipation factor), the decay amplitude that records these goods with reference to nano composite material goods damping test method among the Chinese patent ZL200810064119.X be respectively 0.117 ,-32.3dB.(radar band comprises X-band and Ku wave band, and satisfies f 〉=cL/2D with reference to indoor RCS (RCS) reflectivity method respectively
2Require), the Determination of Dynamic Elastic Modulus of Concrete assay method records the maximum of these goods/minimum reflectance Γ
DB, dynamic modulus of elasticity E
d, specific acoustic resistance Z is respectively-25.2dB/-10.5dB(ripple f ∈ 2-18GHz frequently), 3.2 * 10
4MPa, 19.3k Ω.
Steel wire mesh frame is for before the nanometer foam concrete slurry that paves, in middle half eminence of the wallboard woven wire of the vertical single-layer type of frame in the embedded woven wire heat-insulation wall plate goods.The other the same as in Example 1.
Method with reference to GB/T11969-2008 " steam-pressing aero-concrete method for testing performance ", GB/T17671-1999 " Test method for strength of hydraulic cement mortar ", GB/T10294-2008 " the mensuration protective heat plate method of Technology of Steady State Thermal Resistance of Thermal Insulating Material and related characteristics ", JC/T603-2004 " cement mortar dry shrinkage test method " regulation records dry density, volume water absorption rate, ultimate compression strength, the thermal conductivity of relevant nanometer foamed concrete and reinforcement heat-insulation wall plate goods sample respectively, and contract with dry rate is respectively 351kg/m
3, 3.5%, 1.70MPa, 0.0589W/m.k.Structural damping ratio (dissipation factor), the decay amplitude that records these goods with reference to nano composite material goods damping test method among the Chinese patent ZL200810064119.X be respectively 0.094 ,-28.6dB.(radar band comprises X-band and Ku wave band, and satisfies f 〉=cL/2D with reference to indoor RCS (RCS) reflectivity method respectively
2Require), the Determination of Dynamic Elastic Modulus of Concrete assay method records the maximum of these goods/minimum reflectance Γ
DB, dynamic modulus of elasticity E
d, specific acoustic resistance Z is respectively-23.1dB/-9.1dB(ripple f ∈ 2-18GHz frequently), 2.8 * 10
4MPa, 21.5k Ω.
Nanometer foam concrete and reinforcement heat-insulation wall plate goods preparation process and structure are with embodiment 1.Different is: used whipping agent is modification tea saponin class FP-5A, superplasticizer is aliphatic hydroxyl sulphonate condenses high efficiency water reducing agent, the nano wave-absorption agent is diameter 500nm graphene oxide GO, used water-resisting agent is calcium stearate, and used cement is P.O.525R early-strength type ordinary Portland cement.
Method with reference to GB/T11969-2008 " steam-pressing aero-concrete method for testing performance ", GB/T17671-1999 " Test method for strength of hydraulic cement mortar ", GB/T10294-2008 " the mensuration protective heat plate method of Technology of Steady State Thermal Resistance of Thermal Insulating Material and related characteristics ", JC/T603-2004 " cement mortar dry shrinkage test method " regulation records dry density, volume water absorption rate, ultimate compression strength, the thermal conductivity of relevant nanometer foamed concrete and reinforcement heat-insulation wall plate goods sample respectively, and contract with dry rate is respectively 349kg/m
3, 4.1%, 2.05MPa, 0.0473W/m.k.Structural damping ratio (dissipation factor), the decay amplitude that records these goods with reference to nano composite material goods damping test method among the Chinese patent ZL200810064119.X be respectively 0.127 ,-20.9dB.(radar band comprises X-band and Ku wave band, and satisfies f 〉=cL/2D with reference to indoor RCS (RCS) reflectivity method respectively
2Require), the Determination of Dynamic Elastic Modulus of Concrete assay method records the maximum of these goods/minimum reflectance Γ
DB, dynamic modulus of elasticity E
d, specific acoustic resistance Z is respectively-18.7dB/-7.5dB(ripple f ∈ 2-18GHz frequently), 3.0 * 10
4MPa, 27.6k Ω.
Embodiment 4
Nanometer foam concrete and reinforcement heat-insulation wall plate goods preparation process and structure are with embodiment 1.Different is: used whipping agent is animal proteinum class FP-6B, superplasticizer is naphthalene series high-efficiency water-reducing agent FDN, the nano wave-absorption agent is diameter 500nm graphene oxide grafting diameter 60-100nm, the carbon nanofiber GO-CNFs of length 6-30 μ m, used water-resisting agent is sodium stearate, and used cement is 625 type rapid hardening high-strength aluminate cements.
Method with reference to GB/T11969-2008 " steam-pressing aero-concrete method for testing performance ", GB/T17671-1999 " Test method for strength of hydraulic cement mortar ", GB/T10294-2008 " the mensuration protective heat plate method of Technology of Steady State Thermal Resistance of Thermal Insulating Material and related characteristics ", JC/T603-2004 " cement mortar dry shrinkage test method " regulation records dry density, volume water absorption rate, ultimate compression strength, the thermal conductivity of relevant nanometer foamed concrete and reinforcement heat-insulation wall plate goods sample respectively, and contract with dry rate is respectively 297kg/m
3, 2.8%, 1.96MPa, 0.0497W/m.k.Structural damping ratio (dissipation factor), the decay amplitude that records these goods with reference to nano composite material goods damping test method among the Chinese patent ZL200810064119.X be respectively 0.114 ,-23.0dB.(radar band comprises X-band and Ku wave band, and satisfies f 〉=cL/2D with reference to indoor RCS (RCS) reflectivity method respectively
2Require), the Determination of Dynamic Elastic Modulus of Concrete assay method records the maximum of these goods/minimum reflectance Γ
DB, dynamic modulus of elasticity E
d, specific acoustic resistance Z is respectively-23.6dB/-11.4dB(ripple f ∈ 2-18GHz frequently), 3.1 * 10
4MPa, 30.1k Ω.
Embodiment 5
Nanometer foam concrete and reinforcement heat-insulation wall plate goods preparation process and structure are with embodiment 1.Different is: the nano wave-absorption agent is the carbonyl iron dust GO-CI of diameter 500nm graphene oxide grafting particle diameter 2.5-3.5 μ m.
Method with reference to GB/T11969-2008 " steam-pressing aero-concrete method for testing performance ", GB/T17671-1999 " Test method for strength of hydraulic cement mortar ", GB/T10294-2008 " the mensuration protective heat plate method of Technology of Steady State Thermal Resistance of Thermal Insulating Material and related characteristics ", JC/T603-2004 " cement mortar dry shrinkage test method " regulation records dry density, volume water absorption rate, ultimate compression strength, the thermal conductivity of relevant nanometer foamed concrete and reinforcement heat-insulation wall plate goods sample respectively, and contract with dry rate is respectively 489kg/m
3, 3.0%, 2.75MPa, 0.0534W/m.k.Structural damping ratio (dissipation factor), the decay amplitude that records these goods with reference to nano composite material goods damping test method among the Chinese patent ZL200810064119.X be respectively 0.102 ,-19.3dB.(radar band comprises X-band and Ku wave band, and satisfies f 〉=cL/2D with reference to indoor RCS (RCS) reflectivity method respectively
2Require), the Determination of Dynamic Elastic Modulus of Concrete assay method records the maximum of these goods/minimum reflectance Γ
DB, dynamic modulus of elasticity E
d, specific acoustic resistance Z is respectively-24.7dB/-10.4dB(ripple f ∈ 2-18GHz frequently), 2.8 * 10
4MPa, 20.2k Ω.
Embodiment 6
As shown in Figure 2, nanometer foam concrete slurry preparation process is with embodiment 1.Different is: it is that the common heat-insulation wall plate of pearlstone class forms suction ripple energy-dissipating type function surface layer, the heat-insulation wall plate of final molding band nanometer foam concrete function surface layer that nanometer foam concrete slurry stand is applied at base material.Shown in Fig. 2 wall panel element, nanometer foam concrete of the present invention and reinforcement heat-insulation wall plate goods comprise nanometer foam concrete layer 1, steel wire mesh frame 2 and water-fast mask paper 3 and interlocking grout filler 4 and common heat-insulation wall plate 5.Described nanometer foam concrete function surface layer also comprises distribution fiber-like nano wave-absorption agent 1a and microbubble 1b wherein except comprising maturing.
Record respectively dry density, volume water absorption rate, ultimate compression strength, the thermal conductivity of corresponding heat-insulation wall plate goods sample with nanometer foam concrete function surface layer with reference to the method for GB/T11969-2008 " steam-pressing aero-concrete method for testing performance ", GB/T17671-1999 " Test method for strength of hydraulic cement mortar ", GB/T10294-2008 " the mensuration protective heat plate method of Technology of Steady State Thermal Resistance of Thermal Insulating Material and related characteristics ", JC/T603-2004 " cement mortar dry shrinkage test method " regulation, contract with dry rate is respectively 529kg/m
3, 2.7%, 3.03MPa, 0.0487W/m.k.Structural damping ratio (dissipation factor), the decay amplitude that records these goods with reference to nano composite material goods damping test method among the Chinese patent ZL200810064119.X be respectively 0.098 ,-17.2dB.(radar band comprises X-band and Ku wave band, and satisfies f 〉=cL/2D with reference to indoor RCS (RCS) reflectivity method respectively
2Require), the Determination of Dynamic Elastic Modulus of Concrete assay method records the maximum of these goods/minimum reflectance Γ
DB, dynamic modulus of elasticity E
d, specific acoustic resistance Z is respectively-25.3dB/-11.6dB(ripple f ∈ 2-18GHz frequently), 3.1 * 10
4MPa, 21.6k Ω.
Claims (10)
1. nanometer foam concrete, it is characterized in that, comprise following component by weight ratio: 100 parts of cement, 0.1-5 part oil coke desulfurization ash, 0.01-2 part water-resisting agent, 10-30 part flyash, 0.1-6 part superplasticizer, 50-200 part water, 1-20 part whipping agent, the agent of 0.01-5 part nano wave-absorption.
2. nanometer foam concrete according to claim 1 is characterized in that, described cement is silicate cement or aluminate cement or aluminosulfate cement; Described oil coke desulfurization ash is the dehydrated gyp-CaSO that petrochemical refining's industry adopts the lime powder desulfurization technology to generate
4With lime CaO be the byproduct of main component; Described water-resisting agent is a kind of in stearates water-resisting agent, silicone based water-resisting agent, the polymer latex class water-resisting agent; Described flyash is I level flyash; Described superplasticizer is the one or more combination in polycarboxylate high-efficiency water-reducing agent, aliphatic high-efficiency water reducing agent, Amino-sulfonic Acid-based Water-reducer, melamine resin series high-efficiency water-reducing agent, the naphthalene series high-efficiency water-reducing agent; Described whipping agent is a kind of in Sodium dodecylbenzene sulfonate chemical foaming agent, modification tea saponin class whipping agent, the animal proteinum class whipping agent; Described nano wave-absorption agent is a kind of in carbon nanofiber, Graphene, graphene oxide, nano level carbon black, nano level nickel powder, nano grade iron powder, graphene oxide grafting carbon nanotube, graphene oxide grafting carbon nanofiber, graphene oxide grafting hydroxyl nickel powder, the graphene oxide graft carbonyl iron powder or wherein several mixing.
3. one kind is adopted the concrete reinforcement heat-insulation wall plate of the described nanometer foam of claim 1, it is characterized in that, comprise nanometer foam concrete layer (1), its built-in steel wire mesh frame (2), nanometer foam concrete layer (1) is pasted water-fast mask paper (3) in upper and lower surface; Between the adjacent wallboard by steel wire mesh frame (2) end extension and the grout filler (4) that contains wave absorbing agent mutually interlock carry out the piece interlocking.
4. reinforcement heat-insulation wall plate according to claim 3, it is characterized in that, be provided with common heat-insulation wall plate (5) between nanometer foam concrete layer (1) and the lower water-fast mask paper (3), nanometer foam concrete layer (1) is sticky deposited on the common heat-insulation wall plate (5), lower water-fast mask paper (3) sticks on the lower surface of common heat-insulation wall plate (5), the built-in steel wire mesh frame of common heat-insulation wall plate (5) (2).
5. according to claim 3 or 4 described reinforcement heat-insulation wall plates, it is characterized in that, the grid of steel wire mesh frame (2) is 10-50mm*10-50mm rectangle or rhombus grid; The decoration form of steel wire mesh frame (2) is the top and bottom two-layer equation that is arranged on the middle single-layer type of wallboard or is arranged on wallboard.
6. according to claim 3 or 4 described reinforcement heat-insulation wall plates, it is characterized in that, described common heat-insulation wall plate (5) is a kind of in pearlstone class, glass bead class, sepiolite class, rock wool class, the foamed concrete class.
7. the preparation method of a nanometer foam concrete reinforcement heat-insulation wall plate is characterized in that, comprises the steps:
(1) by weight ratio 0.05-5 part superplasticizer is dissolved in 45-150 part water, add again the agent of 0.01-5 part nano wave-absorption, and carry out 0-1.5 hour ultrasonication, add again 5-20 part whipping agent, then with stirrer or the prefabricated foaming in 1-5 minute of cement foam maker high-speed stirring, form nano wave-absorption agent-whipping agent-superplasticizer foam system;
(2) simultaneously, the oil coke desulfurization ash that 0.1-5 part is levigate, 0.01-2 part water-resisting agent, 0.05-1 part superplasticizer, 5-50 part water, 10-30 part flyash, 100 parts of cement mix formation water-resisting agent-flyash-cement slurry system with stirrer;
(3) then the nano wave-absorption agent-whipping agent in the step (1)-superplasticizer foam system is mixed in water-resisting agent-flyash in the step (2)-cement slurry system, stir evenly at a slow speed rear paving rapidly by in the shape and size mould of actual demand design or on the common heat-insulation wall plate, be provided with steel wire mesh frame in mould or the common heat-insulation wall plate, the quiet 1-30 of stopping minute to realize possible continuation foaming, maintenance extremely is scheduled to the length of time under the normal curing condition afterwards, moulding nanometer foam concrete product;
(4) the nanometer foam concrete product after step (3) demoulding is dry and cleaning, respectively paste the water-fast mask paper of one deck same size specification in upper and lower surface, and continue under the normal curing condition maintenance to 28d length of time, namely get nanometer foam concrete reinforcement heat-insulation wall plate goods.
8. preparation method according to claim 7 is characterized in that, described cement is silicate cement or aluminate cement or aluminosulfate cement; Described levigate oil coke desulfurization ash is the dehydrated gyp-CaSO that petrochemical refining's industry adopts the lime powder desulfurization technology to generate
4With lime CaO be the byproduct of main component; Described water-resisting agent is a kind of in stearates water-resisting agent, silicone based water-resisting agent, the polymer latex class water-resisting agent; Described flyash is I level flyash; Described superplasticizer is the one or more combination in polycarboxylate high-efficiency water-reducing agent, aliphatic high-efficiency water reducing agent, Amino-sulfonic Acid-based Water-reducer, melamine resin series high-efficiency water-reducing agent, the naphthalene series high-efficiency water-reducing agent; Described whipping agent is a kind of in Sodium dodecylbenzene sulfonate chemical foaming agent, modification tea saponin class whipping agent, the animal proteinum class whipping agent; Described nano wave-absorption agent is a kind of in carbon nanofiber, Graphene, graphene oxide, nano level carbon black, nano level nickel powder, nano grade iron powder, graphene oxide grafting carbon nanotube, graphene oxide grafting carbon nanofiber, graphene oxide grafting hydroxyl nickel powder, the graphene oxide graft carbonyl iron powder or wherein several mixing.
9. according to claim 7 or 8 described preparation methods, it is characterized in that, the grid of steel wire mesh frame is 10-50mm*10-50mm rectangle or rhombus grid; Decoration form is the middle single-layer type of wallboard or wallboard top and bottom two-layer equation.
10. according to claim 7 or 8 described preparation methods, it is characterized in that, common heat-insulation wall plate is a kind of in pearlstone class, glass bead class, sepiolite class, rock wool class, the foamed concrete class.
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