CN102863199B - Preparation of geopolymer inorganic gelled material combining fire insulating and protecting functions and application - Google Patents
Preparation of geopolymer inorganic gelled material combining fire insulating and protecting functions and application Download PDFInfo
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- CN102863199B CN102863199B CN201210356357.4A CN201210356357A CN102863199B CN 102863199 B CN102863199 B CN 102863199B CN 201210356357 A CN201210356357 A CN 201210356357A CN 102863199 B CN102863199 B CN 102863199B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention discloses a preparation method of a geopolymer inorganic gelled material combining fire insulating and protecting and applications of the geopolymer inorganic gelled material. The preparation method comprises the steps as follows: adding chopped fiber and solid aluminum hydroxide to solid powder so as to obtain the mixture; pouring a potash water glass solution into the mixture; and agitating to obtain the product, wherein the shopped fiber and the solid aluminum hydroxide are respectively 0.5-2.0% and 10-25% based on the mass of the solid powder; the quantity of the used potash water glass and the solid powder is of 0.5 to 0.6 based on the water to binder ratio; the solid powder comprises the following components in mass percent: 80-90% of metakaolin, 5-10% of silica fume, and 5-10% of fly ash. With the adoption of the material produced by the method disclosed by the invention, the problems due to cracking and brittleness of inorganic gel material can be solved well; the material has high strength in high-temperature adhering and high in heat insulating performance; when the material is used for adhering a fiber cloth reinforcing concrete component, the reinforcing concrete component also has high resistance to high temperature under the condition that the fireproof coating is not coated.
Description
Technical field
The invention belongs to building material technical field, particularly a kind of preparation method and application thereof of the high temperature resistant ground polymers inorganic coagulation material that has fire insulation provide protection concurrently.
Background technology
It is the common a kind of structural strengthening mode of field of civil engineering that fibre reinforced composites (FRP) are reinforced.The tackiness agent of dipping, bondable fibers reinforced composite generally adopts epoxy resin organic gel.Organic gel has advantages of that cohesive force is strong, wetting property good, but exceedes after 60～80 DEG C in temperature, will soften, and cohesive strength sharply declines, and causes cloth under high temperature to lose reinforcement effect.Therefore, in the time having fire protection requirement, conventionally cloth surface layer solidify dry after, also need the certain thickness frie retardant coating of outer painting, this has not only increased working procedure and time, has also increased reinforcement cost.
Have in recent years scholar to be studied inorganic coagulation material, for example, adopt the U.S. cement of chlorine oxygen, alkali slag, metakaolin ground polymers etc., but these materials are more crisp, ductility is poor, and at high temperature easily ftractures, and has affected their application.
Summary of the invention
For solving the deficiencies in the prior art, primary and foremost purpose of the present invention is to provide a kind of preparation method of the high temperature resistant ground polymers inorganic coagulation material that has fire insulation provide protection concurrently.The present invention, by add chopped carbon fiber or basalt fibre in the preparation process of inorganic coagulation material, can solve cracking and the fragility problem of inorganic coagulation material preferably.
The ground polymers inorganic coagulation material that provides aforesaid method to prepare is provided.
A further object of the present invention is to provide the application of above-mentioned ground polymers inorganic coagulation material.This ground polymers inorganic coagulation material has good high temperature bond performance and heat-proof quality, and while doing cloth jointing compound and surface layer protecting materials with this material, reinforced concrete member also has good resistance to elevated temperatures in the situation that not being coated with frie retardant coating.
Object of the present invention is achieved through the following technical solutions: a kind of preparation method of the ground polymers inorganic coagulation material that has fire insulation provide protection concurrently, comprises following operation steps: chopped strand and solid aluminum hydroxide are added in pressed powder, form mixture; Potash water glass solution is poured in mixture, stirred, obtain having concurrently the ground polymers inorganic coagulation material of fire insulation provide protection;
Described chopped strand is 0.5%～2.0% of pressed powder quality; Described aluminium hydroxide is 10%～25% of pressed powder quality; The usage quantity of described potash water glass solution and pressed powder counts 0.5～0.6 according to water-cement ratio, and described water-cement ratio calculates by the following method: the quality of solvent in potash water glass solution/(quality of the quality+pressed powder of solute in potash water glass solution);
Described pressed powder is made up of following component by mass percentage: metakaolin 80%～90%, silicon ash 5%～10% and flyash 5%～10%.
Described chopped strand is chopped carbon fiber or the basalt fibre of length 3～6mm.
In described potash water glass solution, potash water glass modulus is 1.0～1.4, and mass concentration is 35～40%.
The time of described stirring is 10～20min.
A kind of ground polymers inorganic coagulation material that has fire insulation provide protection concurrently preparing according to aforesaid method.
Above-mentioned ground polymers inorganic coagulation material can be applicable to paste fiber cloth reinforced concrete member.
Described application comprises following operation steps:
(1) surface of concrete structure cleaned out and kept dry;
(2) cutting cloth, and cloth is immersed in to 5～15min in ground polymers inorganic coagulation material; Described cloth is carbon cloth or basalt fiber cloth;
(3) ground polymers inorganic coagulation material is evenly put on to the surface of concrete member, bondline thickness is 0.3～0.8mm;
(4) after the touch dry of polymers inorganic coagulation material surface, ground, take out the cloth of soaking, be attached to surface of concrete structure;
(5) with cylinder roll extrusion 3～5 times on the surface that posts cloth, make the abundant impregnation of fibers cloth of ground polymers inorganic coagulation material, and make the even compacting of cloth laying, occur without bubble;
(6), if need to paste 2～3 layers of cloth, repeating step (2)～(5), carry out the stickup of next layer outwardly after polymers inorganic coagulation material touch dry in last layer cloth;
(7) after the touch dry of last one deck cloth surface, the ground polymers inorganic coagulation material protection surface layer that is 1～10mm in its surface uniform, layering brushing total thickness, every layer of brushing gauge control, in 3mm, carried out the brushing of next layer after ground, upper strata polymers inorganic coagulation material touch dry;
(8) after surface layer final set, the wet water curing of coating film or maintenance 7～28 days under normal curing condition.
Principle of the present invention is: potash water glass and metakaolin are topmost moietys, and metakaolin aquation under the exciting of potash water glass forms the network structure of silicon-oxy tetrahedron and aluminum-oxygen tetrahedron composition; Mixing a small amount of silicon ash is the workability in order to increase ground polymers, reduces the consumption of water; Mixing flyash is in order to improve compactness; The object of mixing chopped carbon fiber or basalt fibre is to strengthen the toughness of ground polymers, reduce under high temperature the crack of polymers; The object of mixing fire retardant aluminium hydroxide is to improve the heat-proof quality of ground polymers, when aluminium hydroxide pyrolytic decomposition, will absorb more heat transfer, can reduce the temperature of material surface.
With respect to prior art, tool of the present invention has the following advantages and beneficial effect:
The ground polymers inorganic coagulation material that adopts the inventive method to prepare all has good viscosifying power under normal temperature and high temperature; be not easy cracking; and heat-proof quality is good; when the surface layer protecting materials of the jointing compound for affixing carbon fabric or basalt fiber cloth reinforced concrete member and cloth, reinforced concrete member also has good resistance to elevated temperatures in the situation that not being coated with frie retardant coating.In addition, this ground polymers inorganic coagulation material safety non-toxic, easily preparation, cheap.
Brief description of the drawings
Fig. 1 is the high temperature cohesive strength comparison diagram of ground polymers inorganic coagulation material and epoxy resin organic gel.
Fig. 2 is subject to fiery mortar specimen and ground polymers test block carry on the back fiery face and are subject to fiery surface temperature comparison diagram on alcohol stove.
Fig. 3 is that ground polymers is pasted cloth parcel and do not wrap up concrete test block Concrete At High Temperature surface and core temperature comparison diagram.
Concrete surface and core temperature comparison diagram when Fig. 4 is ground polymers and the test of epoxy resin stickup cloth parcel concrete test block naked light.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
The chopped carbon fiber that is 3mm by length and solid aluminum hydroxide add in pressed powder (being made up of following component by mass percentage: metakaolin 90%, silicon ash 5% and flyash 5%), form mixture, described chopped strand is 0.5% of pressed powder quality, and solid aluminum hydroxide is 25% of pressed powder quality; By potash water glass solution, (potash water glass modulus is 1.0; mass concentration is 40%) pour in mixture; the usage quantity of described potash water glass solution and pressed powder counts 0.5 according to water-cement ratio (quality of solvent in water-cement ratio=potash water glass solution/(quality of the quality+pressed powder of solute in potash water glass solution)); stir 10min, obtain having concurrently the ground polymers inorganic coagulation material of fire insulation provide protection.
Embodiment 2
The present embodiment as different from Example 1 potash water glass modulus is 1.1, and all the other are identical with embodiment 1.
Embodiment 3
The present embodiment as different from Example 1 potash water glass modulus is 1.2, and all the other are identical with embodiment 1.
Embodiment 4
The present embodiment as different from Example 1 potash water glass modulus is 1.3, and all the other are identical with embodiment 1.
Embodiment 5
The present embodiment as different from Example 1 potash water glass modulus is 1.4, and all the other are identical with embodiment 1.
Embodiment 6
The present embodiment as different from Example 1 mass concentration of potash water glass solution is 37%, and all the other are identical with embodiment 1.
Embodiment 7
The present embodiment as different from Example 1 mass concentration of potash water glass solution is 35%, and all the other are identical with embodiment 1.
Embodiment 8
The present embodiment as different from Example 1 usage quantity of potash water glass solution and pressed powder counts 0.6 according to water-cement ratio, and all the other are identical with embodiment 1.
Embodiment 9
The present embodiment as different from Example 1 pressed powder is made up of following component by mass percentage: metakaolin 85%, silicon ash 5% and flyash 10%, all the other are identical with embodiment 1.
Embodiment 10
The present embodiment as different from Example 1 pressed powder is made up of following component by mass percentage: metakaolin 85%, silicon ash 10% and flyash 5%, all the other are identical with embodiment 1.
Embodiment 11
The present embodiment as different from Example 1 pressed powder is made up of following component by mass percentage: metakaolin 80%, silicon ash 10% and flyash 10%, all the other are identical with embodiment 1.
Embodiment 12
The present embodiment as different from Example 1 solid aluminum hydroxide is 20% of pressed powder quality, and all the other are identical with embodiment 1.
Embodiment 13
The present embodiment as different from Example 1 solid aluminum hydroxide is 10% of pressed powder quality, and all the other are identical with embodiment 1.
Embodiment 14
The present embodiment as different from Example 1 chopped carbon fiber length is 6mm, and all the other are identical with embodiment 1.
Embodiment 15
The present embodiment as different from Example 1 chopped carbon fiber is 1.0% of pressed powder quality, and all the other are identical with embodiment 1.
Embodiment 16
The present embodiment as different from Example 1 chopped carbon fiber is 2.0% of pressed powder quality, and all the other are identical with embodiment 1.
Embodiment 17
The present embodiment has adopted the short basalt fibre of cutting to replace chopped carbon fiber as different from Example 1, and all the other are identical with embodiment 1.
Embodiment 18
The present embodiment as different from Example 1 churning time is 15min, and all the other are identical with embodiment 1.
Embodiment 19
The present embodiment as different from Example 1 churning time is 20min, and all the other are identical with embodiment 1.
Embodiment 20
Paste cloth with reinforced concrete member with arbitrary scheme gained ground polymers inorganic coagulation material in embodiment 1～19, concrete steps are as follows:
(1) surface of concrete structure is cleaned out and kept dry by " building structure strengthening engineering construction quality acceptance specification " requirement;
(2) cutting cloth, and cloth is immersed in to 5min in ground polymers inorganic coagulation material; Described cloth is carbon cloth or basalt fiber cloth;
(3) ground polymers inorganic coagulation material is evenly put on to the surface of concrete member, bondline thickness is 0.3mm;
(4) after the touch dry of polymers inorganic coagulation material surface, ground, take out the cloth of soaking, be attached to surface of concrete structure;
(5) with cylinder roll extrusion on the surface that posts cloth, make the abundant impregnation of fibers cloth of ground polymers inorganic coagulation material, and make the even compacting of cloth laying, occur without bubble;
(6), if need to paste 2 layers ~ 3 layers cloth, repeating step (2)～(5), carry out the stickup of next layer outwardly after polymers inorganic coagulation material touch dry in last layer cloth;
(7) after the touch dry of last one deck cloth surface, the ground polymers inorganic coagulation material protection surface layer that is 1mm at its surface uniform brushing thickness;
(8) after surface layer final set, the wet water curing of coating film 7 days.
Embodiment 21
The present embodiment time that the described cloth of step (2) is immersed in ground polymers inorganic coagulation material is as different from Example 20 10min, and other are with embodiment 20.
Embodiment 22
The present embodiment time that the described cloth of step (2) is immersed in ground polymers inorganic coagulation material is as different from Example 20 15min, and other are with embodiment 20.
Embodiment 23
The present embodiment as different from Example 20 described bondline thickness of step (3) is 0.5mm, and other are with embodiment 20.
Embodiment 24
The present embodiment as different from Example 20 described bondline thickness of step (3) is 0.8mm, and other are with embodiment 20.
Embodiment 25
The present embodiment as different from Example 20 brushing thickness of described ground of step (7) polymers inorganic coagulation material protection surface layer is 3mm, and other are with embodiment 20.
Embodiment 26
The present embodiment as different from Example 20 brushing thickness of described ground of step (7) polymers inorganic coagulation material protection surface layer is 5mm; divide 2 layers of brushing; every layer of brushing gauge control is in 3mm; after ground, upper strata polymers inorganic coagulation material touch dry, carry out the stickup of next layer, other are with embodiment 20.
Embodiment 27
The present embodiment as different from Example 20 brushing thickness of described ground of step (7) polymers inorganic coagulation material protection surface layer is 8mm; divide 3 layers of brushing; every layer of brushing gauge control is in 3mm; after ground, upper strata polymers inorganic coagulation material touch dry, carry out the stickup of next layer, other are with embodiment 20.
Embodiment 28
The present embodiment as different from Example 20 brushing thickness of described ground of step (7) polymers inorganic coagulation material protection surface layer is 10mm; divide 4 layers of brushing; every layer of brushing gauge control is in 3mm; after ground, upper strata polymers inorganic coagulation material touch dry, carry out the stickup of next layer, other are with embodiment 20.
Embodiment 29
The present embodiment as different from Example 20 described in step (8) after surface layer final set, the lower maintenance of normal curing condition (20 DEG C ± 2 DEG C of temperature, relative humidity are more than 95%) 7 days, other were with embodiment 20.
Embodiment 30
The present embodiment as different from Example 20 described in step (8) after surface layer final set, the wet water curing of coating film 28 days, other are with embodiment 20.
Embodiment 31:
(1) the sheet KOH that is 85% by 158.1g purity and 147.6g water join in the potash water glass solution that 510g modulus is 2.4, mass concentration is 40%, recall 815.7g modulus and be 1.0, concentration is still 40% potash water glass solution;
(2) take 587.34g Shanxi metakaolin finished product, the ultra-fine silicon ash of 32.63g and 32.63g first level flour coal ash, and mix, form the solid powder mixture of 652.6g, the water-cement ratio calculating is 0.5;
(3) take short basalt fibre and the 130.52g solid aluminum hydroxide of cutting of 3.26g, join in solid powder mixture, and stir gently;
(4) the potash water glass solution of step (1) is poured in the mixture of step (3), is stirred 10min with mortar mixer, make ground polymers inorganic coagulation material;
(5) above-mentioned ground polymers is injected to 160mm(long) × 40mm(is wide) × 40mm(is high) and three die for molding, jolt ramming, be then placed in standard curing box maintenance 7 days;
(6) adopt universal testing machine to carry out anti-folding and intensity test, the average folding strength that records three samples is 7.04MPa, and mean compressive strength is 50.5MPa.
(7) repeat above-mentioned steps (1), (2), (4), (5) and (6), make the sample that does not add chopped strand and solid aluminum hydroxide, the average folding strength that records three samples is 6.56MPa, and mean compressive strength is 51.33MPa.Than the situation of not mixing chopped strand and solid aluminum hydroxide, the volume integrity of the ground polymers test block of mixing chopped strand and solid aluminum hydroxide in the time reaching capacity ultimate compression strength is better, and folding strength improves, but ultimate compression strength decreases.The ground polymers test block of not mixing chopped strand and solid aluminum hydroxide is highly brittle, and in pressurized tests process, constantly has block to flash, and while approaching ultimate load, test block has been pressed loose substantially; Although and the ground polymers test block of having mixed chopped strand and solid aluminum hydroxide also has and split in pressurized process, due to the drawknot effect of chopped strand, do not fall piece, until ultimate load, test block is still substantially complete.
Embodiment 32:
The difference of the present embodiment and embodiment 31 is to take in step (3) 13.05g chopped carbon fiber and 65.26g solid aluminum hydroxide, all the other steps (1)～(6) are identical with embodiment 31, the ground polymers sample mean folding strength recording in step (6) is 14.057MPa, mean compressive strength is 47.601MPa, and the folding strength of ground polymers test block obviously improves.
Embodiment 33:
(1) make standard cement mortar specimen by " Test method for strength of hydraulic cement mortar ", be of a size of 160mm(long) × 40mm(is wide) × 40mm(is high), under normal curing condition, after maintenance 28d, record its average folding strength and ultimate compression strength is respectively 8.62MPa and 33MPa; By clean cement mortar block removing surface and keep dry for subsequent use;
(2) the sheet KOH that is 85% by 62.0g purity and 57.88g water join in the potash water glass solution that 200.0g modulus is 2.4, mass concentration is 40%, recall 319.88g modulus and be 1.0, concentration is still 40% potash water glass solution;
(3) take 230.32g Shanxi metakaolin finished product, the ultra-fine silicon ash of 12.80g, 12.80g first level flour coal ash, and mix, forming the solid powder mixture of 255.92g, the water-cement ratio calculating is 0.5;
(4) take 1.28g chopped carbon fiber and 25.59g solid aluminum hydroxide, join in solid powder mixture, and stir gently;
(5) the potash water glass solution of step (2) is poured in the mixture of step (4), is stirred 10min with mortar mixer, make ground polymers inorganic coagulation material;
(6) cut out 420mm(long) × 40mm(is wide) carbon cloth rectangular, 5min in the prepared ground polymers slurries of step (5) is immersed in its one end, immersion length is 30mm, utilizes tamper to vibrate with the dipping of polymers to cloth intentinonally; Cement mortar block upper surface one end 30mm(of getting ready in step (1) is long) × 40mm(is wide) the ground polymers of evenly smearing the about 0.5mm of a layer thickness in scope is as primer, after its touch dry, the cloth end that flooded ground polymers is pasted on to test block upper surface in polymers primer edge alignedly, use cylinder repeatedly to roll, drive bubble and unnecessary slurries away, this face is the shear breakage of test; After cloth compacting, the ground polymers of smearing the about 1mm of a layer thickness at outside surface is as surface layer, and floating.Sample coating film was placed on to standard curing box maintenance after 1 day, according to above-mentioned same working method, long at the 60mm(of cement mortar block lower surface same side) × 40mm(is wide) smear primer in scope, and being 60mm by the length of flooding ground polymers, the cloth the other end is pasted on herein, this face is mainly brought into play the effect of anchoring cloth; Coating film after cloth surface layer ground polymers touch dry, then maintenance 7 days in standard curing box.
(7) sample of step (6) being made is put in electrothermal oven successively, adopt fixture that the sand-cement slurry end of sample is fixed on trier, start electrothermal oven, heat-up rate with 5 DEG C/s heats, be heated to respectively 20 DEG C, 100 DEG C, 200 DEG C, 300 DEG C and constant temperature 20min, then with the speed of 2mm/min, cloth end is carried out to stretch-draw with universal testing machine, average pulling force while recording sample destruction is respectively 7106.81N, 7089.74N, 6452.72N and 3389.88N, the cohesive strength that calculates corresponding shear surface is 2.96MPa, 2.95MPa, 2.69MPa, 1.41MPa.
(8) adopt the ground polymers in epoxy resin glue alternative steps (6), make control sample according to the method for step (6);
(9) control sample of step (8) being made is put in electrothermal oven successively, adopt fixture that the sand-cement slurry end of sample is fixed on trier, start electrothermal oven, heat-up rate with 5 DEG C/s heats, be heated to respectively 20 DEG C, 100 DEG C, 150 DEG C and constant temperature 20min, then with the speed of 2mm/min, cloth end is carried out to stretch-draw with universal testing machine, average pulling force while recording sample destruction is respectively 7868N, 1507N and 212N, and the cohesive strength that calculates corresponding shear surface is 3.28MPa, 0.63MPa and 0.09MPa.
The ground polymers inorganic coagulation material that Fig. 1 prepares for the present invention and the high temperature cohesive strength comparison of epoxy resin organic gel.As can be seen from Fig., normal temperature cohesive strength and the epoxy resin glue of ground polymers inorganic coagulation material are suitable, but high temperature cohesive strength is far above epoxy resin glue.
Embodiment 34:
The difference of the present embodiment and embodiment 33 is to take in step (4) 5.12g chopped carbon fiber and 51.18g solid aluminum hydroxide, all the other steps (1) ~ (7) are identical with embodiment 33, average pulling force when sample destroys in step (7) is respectively 6438N, 6223N, 6012N and 2949N, and the cohesive strength that calculates corresponding shear surface is 2.68MPa, 2.59MPa, 2.51MPa, 1.23MPa.
Embodiment 35:
This implementation step (1) ~ (5) are identical with step (1) ~ (5) of embodiment 33.
(6) cut out 420mm(long) × 40mm(is wide) carbon cloth rectangular, 5min in the prepared ground polymers slurries of step (5) is immersed in its one end, immersion length is 30mm, utilizes tamper to vibrate with the dipping of polymers to cloth intentinonally; Cement mortar block upper surface one end 30mm(of getting ready in step (1) is long) × 40mm(is wide) the ground polymers of evenly smearing the about 0.5mm of a layer thickness in scope is as primer, after its touch dry, the cloth end that flooded ground polymers is pasted on to test block upper surface in polymers primer edge alignedly, use cylinder repeatedly to roll, drive bubble and unnecessary slurries away, this face is the shear breakage of test; After cloth compacting, the ground polymers of smearing the about 1mm of a layer thickness at outside surface is as surface layer, and floating.Sample coating film is placed under indoor environment and wets water curing after 1 day, according to above-mentioned same working method, long at the 60mm(of cement mortar block lower surface same side) × 40mm(is wide) smear primer in scope, and the cloth the other end that is 60mm by length is pasted on herein, this face is mainly brought into play the effect of anchoring cloth; Coating film after cloth surface layer ground polymers touch dry, the water curing 7 days of then wetting under indoor environment.
(7) adopt fixture, the sand-cement slurry end of the sample that step (6) is made is fixed on universal testing machine, then in order to the speed of 2mm/min, cloth end is carried out to stretch-draw, until sample destroys.When destruction, the cloth of above-mentioned shear breakage comes off completely together with primer layer, and pulling force is 6142.74N, and the cohesive strength that calculates corresponding shear surface is 2.56MPa.
Embodiment 36:
(1) with embodiment 33 steps (1).
(2) the sheet KOH that is 85% by 31.64g purity and 29.53g water join in the potash water glass solution that 200.0g modulus is 2.4, mass concentration is 40%, recall 261.17g modulus and be 1.4, concentration is still 40% potash water glass solution;
(3) take 141.03g Shanxi metakaolin finished product, the ultra-fine silicon ash of 7.84g, 7.84g first level flour coal ash, and mix, forming the solid powder mixture of 156.71g, the water-cement ratio calculating is 0.6;
(4) take 1.57g chopped carbon fiber and 15.67g solid aluminum hydroxide, join in solid powder mixture, and stir gently;
(5) with embodiment 33 steps (5);
(6) with embodiment 33 steps (6);
(7) adopt fixture, the sand-cement slurry end of the sample that step (6) is made is fixed on universal testing machine, then in order to the speed of 2mm/min, cloth end is carried out to stretch-draw, until sample destroys.When destruction, the cloth of above-mentioned shear breakage comes off completely together with primer layer, and pulling force is 6492.53N, and the cohesive strength that calculates corresponding shear surface is 2.71MPa.
Embodiment 37:
(1) the sheet KOH that is 85% by 44.29g purity and 41.34g water join in the potash water glass solution that 200g modulus is 2.4, concentration is 40%, recall 285.63g modulus and be 1.2, concentration is still 40% potash water glass solution;
(2) take 194.23g Shanxi metakaolin finished product, the ultra-fine silicon ash of 22.85g, 11.43g first level flour coal ash, and mix, forming the solid powder mixture of 228.51g, the water-cement ratio calculating is 0.5;
(3) take short basalt fibre and the 22.85g solid aluminum hydroxide of cutting of 4.57g, join in solid powder mixture, and stir gently;
(4) the potash water glass solution of step (1) is poured in the mixture of step (3), is stirred 10min with mortar mixer, make ground polymers inorganic coagulation material;
(5) the ground polymers of being prepared by step (4) injects the mould of plastics of 100mm × 100mm × 10mm, treats the maintenance 7 days in standard curing box of final set bonnet film;
(6) prepare the mortar specimen of same size by the method for step (5), mortar adopts that 32.5O cement, 1350g standard sand, the 225g water of 450g stir, jolt ramming forms.
(7) prepare the test block of not adding chopped strand and solid aluminum hydroxide of same size by the method for step (1), (2), (4) and (5).
(8) by ground polymers test block, the mortar specimen of step (5), interpolation chopped strand prepared by (6) and (7) and aluminium hydroxide with do not add chopped strand and the ground polymers test block of aluminium hydroxide is placed into respectively and is subject to fire on alcohol stove, the temperature of alcohol stove is controlled at 700-800 DEG C, test respectively the temperature that is subject to fiery face and the fiery face central point of the back of the body with thermopair, add chopped strand and the ground polymers test block of aluminium hydroxide and the temperature comparison curves of mortar specimen as shown in Figure 2.As can be seen from Fig., ground polymers test block is after fire duration exceedes 5min, and the heat-up rate of carrying on the back fiery face will be slower than mortar specimen, shows the heat-proof quality that is better than mortar.
Do not add interpolation chopped strand that the ground polymers test block of chopped strand and aluminium hydroxide prepared with the present invention and the ground polymers test block of aluminium hydroxide and compare, the former serious cracking, is approximately subject to fire after 5 minutes, is subject to fiery face to occur obvious crack; The latter is carefully seen just by naked eyes after fiery 20min to see and have tiny crack.The former is subject to fire to finish can break into two with one's hands easily with hand afterwards, has obvious fragility; And the latter is difficult to break into two with one's hands with hand.
Embodiment 38:
(1) the sheet KOH that is 85% by 44.29g purity and 41.344g water join in the potash water glass solution that 200g modulus is 2.4, concentration is 40%, recall 285.63g modulus and be 1.2, concentration is still 40% potash water glass solution;
(2) take 145.67g Shanxi metakaolin finished product, the ultra-fine silicon ash of 17.14g, 8.57g first level flour coal ash, and mix, forming the solid powder mixture of 171.38g, the water-cement ratio calculating is 0.6;
(3) take 1.71g chopped carbon fiber and 17.14g solid aluminum hydroxide, join in solid powder mixture, and stir gently;
(4) the potash water glass solution of step (1) is poured in the mixture of step (3), stirs 10min with mortar mixer, make ground polymers inorganic coagulation material;
(5) will be of a size of the removing surface of 100mm × 100mm × 100mm concrete test block totally and keep dry by " building structure strengthening engineering construction quality acceptance specification " requirement;
(6) cutting is of a size of 450mm × 100mm × 100mm basalt fiber cloth, and cloth is immersed in to about 5min in ground polymers; Ground polymers prepared by step (4) is evenly put on concrete surface as primer layer, and thickness is 0.5mm; After the touch dry of polymers primer layer surface, ground, take out the cloth of soaking, the surrounding of parcel concrete test block; With cylinder roll extrusion 5 times on the face that posts fiber, make the abundant impregnation of fibers cloth of ground polymers, and make the even compacting of cloth laying, occur without bubble; After the touch dry of cloth surface, the ground polymers protection surface layer that is 6mm at its surface uniform, layering brushing thickness.After surface layer final set, coating film, maintenance 7 days in placement standard curing box.
(7) sample of being prepared by step (6) and the concrete test block that does not wrap up the same size of cloth are put into heat up and identical high-temperature cabinet is set is heated up, and the temperature of testing concrete test block center, concrete surface (with cloth contact surface), the result of two groups of test blocks contrasts as shown in Figure 3.As can be seen from Fig., land used polymers is pasted the concrete test block surface temperature of cloth parcel and is approximately only had the 40%-75% that does not wrap up test block surface, and inside center temperature is approximately the latter's 73% and 63% in the time of intensification 60min and 120min, polymers heat-proof quality is good visibly.
Embodiment 39:
(1) the sheet KOH that is 85% by 310.03g purity and 289.41g water join in the potash water glass solution that 1000g modulus is 2.4, concentration is 40%, recall 1599.44g modulus and be 1.0, concentration is still 40% potash water glass solution;
(2) take 1087.63g Shanxi metakaolin finished product, the ultra-fine silicon ash of 63.98g, 127.96g first level flour coal ash, and mix, forming the solid powder mixture of 1279.57g, the water-cement ratio calculating is 0.5;
(3) take 6.40g chopped carbon fiber and 127.96g solid aluminum hydroxide, join in solid powder mixture, and stir gently;
(4) the potash water glass solution of step (1) is poured in the mixture of step (3), is stirred 10min with mortar mixer, make ground polymers inorganic coagulation material;
(5) will be of a size of the removing surface of 200mm × 200mm × 200mm concrete test block totally and keep dry by " building structure strengthening engineering construction quality acceptance specification " requirement;
(6) cutting is of a size of 900mm × 200mm × 200mm basalt fiber cloth, and cloth is immersed in to about 5min in ground polymers; Ground polymers prepared by step (4) is evenly put on concrete surface as primer layer, and thickness is 0.5mm; After the touch dry of polymers primer layer surface, ground, take out the cloth of soaking, the surrounding of parcel concrete test block; With cylinder roll extrusion 5 times on the face that posts fiber, make the abundant impregnation of fibers cloth of ground polymers, and make the even compacting of cloth laying, occur without bubble; After the touch dry of cloth surface, the ground polymers protection surface layer that is 5mm at its surface uniform, layering brushing thickness.After surface layer final set, coating film, wet water curing 7 days in placement indoor environment.
(7), by the method for step (6), adopt epoxy resin will be of a size of 900mm × 200mm × 200mm basalt fiber cloth and stick on the concrete test block surrounding that is of a size of 200mm × 200mm × 200mm, the outer epoxy resin surface layer that is coated with 5mm after touch dry.
(8) sample of being prepared by step (6) and step (7) is put into naked light test furnace simultaneously and is warming up to gradually nearly 1000 DEG C, and the temperature of testing concrete test block center, concrete surface (with cloth contact surface), the result of two groups of test blocks contrasts as shown in Figure 4.As can be seen from Fig., in the time being subject to fiery 60min and 120min, the surface temperature of concrete that land used polymers is pasted cloth parcel concrete test block approximately only has epoxy resin to paste 77% and 90% of cloth parcel concrete test block, and core temperature the former only have the latter's 68% and 81%.Be subject to after fiery 180min, epoxy resin prepared by step (7) is pasted epoxy resin layer and the cloth of cloth parcel concrete test block and is all burnt and melt, and can only see several Shu Fabai that remain little and the fiber yarn blowing; And step (6) is although that the ground polymers of preparing is pasted the ground polymers outside surface of cloth parcel concrete test block is existing compared with multiple cracking, do not come off, find that the cloth of the inside is still complete after removing ground, top layer polymers.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (5)
1. a ground polymers inorganic coagulation material that has fire insulation provide protection concurrently is in the application of pasting in fiber cloth reinforced concrete member, it is characterized in that: described in have the ground polymers inorganic coagulation material of fire insulation provide protection concurrently preparation method comprise following operation steps: chopped strand and solid aluminum hydroxide are added in pressed powder, form mixture; Potash water glass solution is poured in mixture, stirred, obtain having concurrently the ground polymers inorganic coagulation material of fire insulation provide protection;
Described chopped strand is 0.5%～2.0% of pressed powder quality; Described solid aluminum hydroxide is 10%～25% of pressed powder quality; The usage quantity of described potash water glass solution and pressed powder counts 0.5～0.6 according to water-cement ratio, and described water-cement ratio calculates by the following method: the quality of solvent in potash water glass solution/(quality of the quality+pressed powder of solute in potash water glass solution);
Described pressed powder is made up of following component by mass percentage: metakaolin 80%～90%, silicon ash 5%～10% and flyash 5%～10%.
2. application according to claim 1, is characterized in that: described application comprises following operation steps:
(1) surface of concrete structure cleaned out and kept dry;
(2) cutting cloth, and cloth is immersed in to 5～15min in ground polymers inorganic coagulation material; Described cloth is carbon cloth or basalt fiber cloth;
(3) ground polymers inorganic coagulation material is evenly put on to the surface of concrete member, bondline thickness is 0.3～0.8mm;
(4) after the touch dry of polymers inorganic coagulation material surface, ground, take out the cloth of soaking, be attached to surface of concrete structure;
(5) with cylinder roll extrusion 3～5 times on the surface that posts cloth, make the abundant impregnation of fibers cloth of ground polymers inorganic coagulation material, and make the even compacting of cloth laying, occur without bubble;
(6), if need to paste 2～3 layers of cloth, repeating step (2)～(5), carry out the stickup of next layer outwardly after polymers inorganic coagulation material touch dry in last layer cloth;
(7) after the touch dry of last one deck cloth surface, the ground polymers inorganic coagulation material protection surface layer that is 1～10mm in its surface uniform, layering brushing total thickness, every layer of brushing gauge control, in 3mm, carried out the brushing of next layer after ground, upper strata polymers inorganic coagulation material touch dry;
(8) after surface layer final set, the wet water curing of coating film or maintenance 7～28 days under normal curing condition.
3. application according to claim 1, is characterized in that: described chopped strand is chopped carbon fiber or the basalt fibre of length 3～6mm.
4. application according to claim 1, is characterized in that: in described potash water glass solution, potash water glass modulus is 1.0～1.4, and mass concentration is 35～40%.
5. application according to claim 1, is characterized in that: the time of described stirring is 10～20min.
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| CN104129969A (en) * | 2014-07-23 | 2014-11-05 | 广西启利新材料科技股份有限公司 | Geopolymer-based carbon fiber sheet binder |
| CN104177055A (en) * | 2014-08-21 | 2014-12-03 | 广西启利新材料科技股份有限公司 | Grouting material |
| FR3030100B1 (en) * | 2014-12-10 | 2018-03-02 | Nexans | CABLE OR ACCESSORY FOR CABLE COMPRISING A FIRE RESISTANT LAYER |
| CN105314956A (en) * | 2015-10-15 | 2016-02-10 | 上海建工集团股份有限公司 | Geopolymer large-size concrete and preparation method thereof |
| CN105776915B (en) * | 2016-03-23 | 2018-04-13 | 华南理工大学 | A kind of non-cement-based quick setting early strength concrete and preparation method and application |
| CN106046874B (en) * | 2016-06-30 | 2018-12-25 | 浙江大学 | A kind of sterilization and anticorrosion coating and its preparation process for the concrete structure that borders on the sea |
| CN106277861A (en) * | 2016-08-15 | 2017-01-04 | 马鞍山十七冶工程科技有限责任公司 | A kind of Novel geological polymer and preparation method |
| CZ309179B6 (en) * | 2019-02-28 | 2022-04-20 | ORLEN UniCRE a.s. | Pre-impregnated fibre reinforcement and producing it |
| CN110183162B (en) * | 2019-06-26 | 2021-11-12 | 哈尔滨工业大学（威海） | Preparation method of polyester fabric reinforced aluminosilicate polymer composite material |
| CN113277824B (en) * | 2021-03-11 | 2022-06-14 | 湖南大学 | Curing method of inorganic adhesive impregnated carbon fiber |
| CN114263111B (en) * | 2022-01-25 | 2023-12-29 | 江苏中矿大正表面工程技术有限公司 | Fireproof and protective system of suspension bridge steel cable system |
| CN117264445A (en) * | 2023-06-27 | 2023-12-22 | 常德职业技术学院 | Inner wall fireproof paint based on metakaolin base polymer and preparation process thereof |
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