CN107129209A - A kind of composite toughening cracking resistance haydite concrete - Google Patents
A kind of composite toughening cracking resistance haydite concrete Download PDFInfo
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- CN107129209A CN107129209A CN201710401058.0A CN201710401058A CN107129209A CN 107129209 A CN107129209 A CN 107129209A CN 201710401058 A CN201710401058 A CN 201710401058A CN 107129209 A CN107129209 A CN 107129209A
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- 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
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- 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
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Abstract
The invention belongs to field of material technology, and in particular to a kind of composite toughening cracking resistance haydite concrete.The present invention passes through a kind of composite toughening material available for concrete, on the basis of it is the activated processing of original halloysite nanotubes, reacted with thionyl chloride, the surface carboxyl groups of halloysite nanotubes are converted into after acid chloride functional groups, with difunctional organic compound reaction, reacted again with Cyanuric Chloride, obtain the halloysite nanotubes that surface has active chloride triazine ring, finally prepared with methylcellulose by nucleophilic substitution.In the composite, the mass ratio of halloysite nanotubes and methylcellulose is 1:0.1 0.5, make concrete that integrally there is good toughness, fatigue resistance and isotropism, be a kind of high performance concrete activeness and quietness composite, the final haydite concrete for prepare has good strength and toughness, meets engineering load-bearing and uses.
Description
Technical field
The invention belongs to building material technical field, and in particular to a kind of composite toughening cracking resistance haydite concrete and its preparation
Method.
Background technology
The General Office of the State Council《On the notice for some opinions for promoting modernization of the housing industry raising housing quality》Regulation：
Coastal cities and the city of other land resource scarcities prohibit the use of solid clay brick since in June, 2000, to protect China
Limited land resource.Develop and be conducive to protection land resource without soil or few haydites of book structure, lytag of soil etc., promote
Enter conservation culture, abroad, haydite concrete has been widely used in building block and large wall panel, or even for load-bearing knot
In structure, its economic benefit is fairly obvious.The aerated-block of outer wall material, aerating haydite concrete are used as relative to instead of clay brick
Building block is on the premise of density is suitable, and due to having haydite as aggregate, intensity increases.Except low compared with general concrete density
Advantage outside, haydite concrete due to using shale, urban building waste or mud production haydite replace stone conduct
Aggregate, also has the advantages that high insulating effect, resistant to corrosion, soundproof effect are good, environmentally friendly.
With China's urbanization process quick in recent years, the use scope of haydite concrete is more and more wider.However, haydite
Concrete is lightweight aggregate concrete, and corresponding is that the haydite concrete for being adapted to load-carrying members studies seldom, wherein important
The reason for be that the toughness of haydite concrete is not so good as normal concrete, and haydite concrete and normal concrete have same limit
System, concrete toughness reinforcing composite toughening material of the invention, the composite of concrete activeness and quietness of the invention increases enhancing
The halloysite nanotubes and methylcellulose of tough excellent performance are combined, and by multi-step surface covalent reaction, form one kind
Unique compound system, the composite prepared can be fully dispersed in concrete, effectively plays material coordination plasticizing
Effect, makes concrete integrally have good toughness, fatigue resistance and isotropism, is a kind of high performance concrete activeness and quietness
Composite, assigns the good toughness of concrete, isotropism, fatigue resistance, is a kind of high performance concrete toughening material, system
Standby haydite concrete has good strength and toughness, meets engineering load-bearing and uses.
The content of the invention
It is an object of the invention to provide kind of a composite toughening cracking resistance haydite concrete, its major function material is using one kind
Available for the composite toughening material of concrete, on the basis of it is the activated processing of original halloysite nanotubes, with thionyl chloride
Reaction, the surface carboxyl groups of halloysite nanotubes are converted into after acid chloride functional groups, and difunctional organic compound reaction, then with
Cyanuric Chloride reacts, and obtains the halloysite nanotubes that surface has active chloride triazine ring, finally passes through parent with methylcellulose
Core substitution reaction and prepare.In the composite, the mass ratio of halloysite nanotubes and methylcellulose is 1:0.1-
0.5, it can make gained concrete that there is good toughness, fatigue resistance, isotropism, shock resistance, antidetonation and cracking resistance.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of composite toughening cracking resistance haydite concrete, its is raw materials used to include by weight：300-400 parts of cement, ultra-fine ore deposit
40-80 parts of powder, 20-40 parts of flyash, 1000-1300 parts of haydite, 3-4 parts of water reducer, 100-120 parts of water, composite toughening material
20-30 parts, 10-15 parts of steel fibre.
The average grain diameter of the super finely ground slag is 4.0-6.6 μm；
The water reducer is commercially available naphthalene series high-efficiency water-reducing agent, and its water-reducing rate is 18-24%.
The preparation method of the composite toughening material, it comprises the following steps：
（1）By the halloysite nanotubes and thionyl chloride of activated processing in organic solvent P, 6-15 is stirred at 40-55 DEG C
After h, in ultrasound 10-16 h at 70-80 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then with 4000-5000
Rpm rotating speed centrifuges 30-40 min, after separating solid and being cleaned through organic solvent Q, then is dried in vacuo 30-50 at 25-35 DEG C
h；
（2）By above-mentioned steps（1）Halloysite nanotubes, difunctional organic compound and the triethylamine of processing are in organic solvent P
Middle mixing, is stirred after 5-15 h at 50-60 DEG C, under nitrogen protection, in 20 kHz, 150 KW supersonic wave cleaning machine
In after ultrasonic reaction 6-10 h at 70-85 DEG C, removing triethylamine and solvent P under reduced pressure, then after blended solvent R is cleaned, in 10-
24-48 h are dried in vacuo at 20 DEG C；
（3）By above-mentioned steps（2）The halloysite nanotubes and Cyanuric Chloride of processing are mixed in tetrahydrofuran, are stirred at 0-10 DEG C
12-24 h are mixed, in after ultrasound 3-8 h at 0-10 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then at 0-10 DEG C
React after 24-72 h, cleaned through tetrahydrofuran, 24-56 h are dried in vacuo at 10-15 DEG C；
（4）By above-mentioned steps（3）After the halloysite nanotubes of processing dissolve in N, N '-dimethyl formamide, dissolving is added to
Have in the N of methylcellulose, N '-dimethyl formamide solution, 5-10 h are stirred at 10-20 DEG C, in 40 kHz, 300 KW
Supersonic wave cleaning machine in ultrasound 1-5 h at 10-20 DEG C, 40-60 DEG C of isothermal reaction 36-56 h is warming up under nitrogen protection
Afterwards, then 80-95 DEG C of isothermal reaction 24-48h is warming up to, removes solvent under reduced pressure, after being eluted with water, 24- is dried in vacuo at 40 DEG C
Composite products are obtained after 48 h.
Above-mentioned steps（1）In activated processing halloysite nanotubes be 6-30 kg, thionyl chloride be 10-60 kg；Have
Machine solvent P is 50-230 L.
Above-mentioned steps（1）In organic solvent P be toluene, 1-METHYLPYRROLIDONE or N, in N '-dimethyl acetamide
It is one or more of.
Above-mentioned steps（1）In organic solvent Q be anhydrous propanone or carbon tetrachloride.
Above-mentioned steps（2）In halloysite nanotubes be 5-30 kg；Difunctional organic compound is 1-8 kg；Three second
Amine is 1-6 L；Organic solvent P is 50-220 L.
Above-mentioned steps（2）In difunctional organic compound be 1,3- propane diamine, ethylenediamine and l, 6- hexamethylene diamine in
It is a kind of.
Above-mentioned steps（2）In mixed solvent R be made up of ethanol, acetone and water, the wherein volume ratio of ethanol, acetone and water
For 2:2:6.
Above-mentioned steps（3）In halloysite nanotubes be 5-20 kg；Cyanuric Chloride is 0.5-5 kg；Tetrahydrofuran is 60-
230 L。
Above-mentioned steps（4）In halloysite nanotubes be 5-20 kg；Dissolve the N of halloysite nanotubes, N '-dimethyl first
Acid amides is 50-200 L；Methylcellulose is 1-5 kg；The N of methylcellulose is dissolved, N '-dimethyl formamide is 10-50 L.
Above-mentioned steps（4）In methylcellulose viscosity average molecular weigh be 3000-20000, substitution value is 0.5-2.0.
In above-mentioned steps（1）Increase the activation process step of halloysite nanotubes before：
（1）Halloysite nanotubes are taken, is handled through mechanical crushing and uses 350 mesh sieves stand-by after selecting；
（2）Each stainless steel ball for loading 60 a diameter of 5 mm and 50 a diameter of 10 in two L nylon tanks of identical 15
Mm stainless steel ball, is then respectively adding the kg of the halloysite nanotubes after being handled through previous step 6, then 600 are added dropwise respectively
Ml absolute ethyl alcohols, and sealed with nylon lid.Two ball grinders are symmetrically put into planetary ball mill, are 350 in rotating speed
Under conditions of rpm and every 30 minutes automatic conversion direction of rotation after ball milling 40-56 h, average length is obtained for 200-230 nm
Chopped halloysite nanotubes.
（3）It is that 8, concentration is 15 wt% to take the halloysite nanotubes after the chopped processing of previous step to be added to pH
Ultrasonic 24 h in Tween 20 aqueous solution, filtering is stand-by after 30 h in being dried in vacuo at 68-70 DEG C after being eluted with water.
Described halloysite nanotubes are commercially available prod, its main specifications：Character：White powder；Composition：SiO2：
58.1wt%、Al2O3：41.02wt%、TiO2：0.17wt%、Fe2O3：0.38wt%、P2O5：0.16wt%, remaining is loss on ignition；Pipe
Internal diameter：15-22 nm；Pipe external diameter：40-70 nm；Length：<1.5 μm；Specific surface area：53.4 m2/g；Density：2.5-2.6g/
cm3。
Described polysorbas20 is commercially available, its main specifications：Character：Pale yellow viscous liquid；Active matter：98-99%；Acid number
(KOHmg/g)：≤1.0；Hydroxyl value (KOHmg/g)：80-108；HLB value：16.7；Saponification number (KOHmg/g)：40-50；Moisture content
(%)：≤1.0.
Compared with the prior art, technical scheme has the advantages that：
Composite environment provided by the present invention available for concrete activeness and quietness is friendly, has in conventional organic solvent
Good dissolubility, has good dispersiveness in water.The preparation condition of the composite is readily satisfied, and raw material sources are rich
Richness, cost is relatively low.
The composite of the concrete activeness and quietness of the present invention, by the halloysite nanotubes and first of activeness and quietness excellent performance
Base cellulose is combined, by multi-step surface covalent reaction, forms a kind of unique compound system, can be in concrete
It is fully dispersed, effectively play the effect of material coordination plasticizing, make concrete integrally have good toughness, fatigue resistance and it is each to
The same sex, is a kind of high performance concrete activeness and quietness composite.
The material of said components is added in mixer in addition to water, it is dry to stir 5-10 minutes, water is then added, continues to stir
15-30 minutes, obtain high-intensity high-tenacity haydite concrete.
Embodiment
For the further open rather than limitation present invention, below in conjunction with example, the present invention is described in further detail.
Embodiment 1
The activation process step of halloysite nanotubes：
（1）Halloysite nanotubes are taken, is handled through mechanical crushing and uses 350 mesh sieves stand-by after selecting；
（2）Each stainless steel ball for loading 60 a diameter of 5 mm and 50 a diameter of 10 in two L nylon tanks of identical 15
Mm stainless steel ball, is then respectively adding the kg of the halloysite nanotubes after being handled through previous step 6, then 600 are added dropwise respectively
Ml absolute ethyl alcohols, and sealed with nylon lid.Two ball grinders are symmetrically put into planetary ball mill, are 350 in rotating speed
Under conditions of rpm and every 30 minutes automatic conversion direction of rotation after ball milling 40-56 h, average length is obtained for 200-230 nm
Chopped halloysite nanotubes；
（3）It is the Tween 20 that 8, concentration is 15 wt% to take the halloysite nanotubes after the chopped processing of previous step to be added to pH
The aqueous solution in ultrasonic 24 h, filtering, it is stand-by after 30 h in being dried in vacuo at 68-70 DEG C after being eluted with water.
Described halloysite nanotubes are commercially available prod, its main specifications：Character：White powder；Composition：SiO2：
58.1wt%、Al2O3：41.02wt%、TiO2：0.17wt%、Fe2O3：0.38wt%、P2O5：0.16wt%；Remaining is loss on ignition.Pipe
Internal diameter：15-22 nm；Pipe external diameter：40-70 nm；Length：<1.5 μm；Specific surface area：53.4 m2/g；Density：2.5-2.6g/
cm3。
Described polysorbas20 is commercially available, its main specifications：Character：Pale yellow viscous liquid；Active matter：98-99%；Acid number
(KOHmg/g)：≤1.0；Hydroxyl value (KOHmg/g)：80-108；HLB value：16.7；Saponification number (KOHmg/g)：40-50；Moisture content
(%)：≤1.0.
The preparation of composite toughening material, is concretely comprised the following steps：
（1）By the halloysite nanotubes and thionyl chloride of activated processing in organic solvent P, stirred at 45 DEG C after 6 h,
In ultrasonic 16 h at 70 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then 35 are centrifuged with 5000 rpm rotating speed
Min, after separating solid and being cleaned through organic solvent Q, then is dried in vacuo at 25 DEG C 30 h；
（2）Halloysite nanotubes, difunctional organic compound and the triethylamine that above-mentioned steps 1 are handled are in organic solvent P
Mixing, stirred at 55 DEG C after 5 h, under nitrogen protection, in 20 kHz, 150 KW supersonic wave cleaning machine at 75 DEG C
After the h of ultrasonic reaction 6, triethylamine and solvent P are removed under reduced pressure, then after blended solvent R is cleaned, 24 h are dried in vacuo at 20 DEG C；
（3）The halloysite nanotubes and Cyanuric Chloride that above-mentioned steps 2 are handled are mixed in tetrahydrofuran, and 12 are stirred at 10 DEG C
H, in after ultrasound 3-8 h at 10 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then reacts at 0-10 DEG C 24 h
Afterwards, cleaned through tetrahydrofuran, 24 h are dried in vacuo at 15 DEG C；
（4）After the halloysite nanotubes that above-mentioned steps 3 are handled dissolve in N, N '-dimethyl formamide, it is added to and is dissolved with
In the N of methylcellulose, N '-dimethyl formamide solution, 10 h are stirred at 10-20 DEG C, 40 kHz, 300 KW it is super
In ultrasonic 3 h at 20 DEG C in sound wave cleaning machine, it is warming up under nitrogen protection after 48 DEG C of h of isothermal reaction 36, then be warming up to 80 DEG C
Isothermal reaction 24h, removes solvent under reduced pressure, after being eluted with water, and composite products are obtained after 24 h are dried in vacuo at 40 DEG C.
Above-mentioned steps（1）In activated processing halloysite nanotubes be 20 kg, thionyl chloride 40 be kg；Organic solvent P
For 180 L.
Above-mentioned steps（1）In organic solvent P be toluene, 1-METHYLPYRROLIDONE or N, in N '-dimethyl acetamide
It is one or more of.
Above-mentioned steps（1）In organic solvent Q be one kind in anhydrous propanone or carbon tetrachloride.
Above-mentioned steps（2）In halloysite nanotubes be 10 kg；Difunctional organic compound is 5 kg；Triethylamine is
4L；Organic solvent P is 180 L.
Above-mentioned steps（2）In difunctional organic compound be 1,3- propane diamine, ethylenediamine and l, 6- hexamethylene diamine in
It is a kind of.
Above-mentioned steps（2）In mixed solvent R be made up of ethanol, acetone and water, the wherein volume ratio of ethanol, acetone and water
For 2:2:6.
Above-mentioned steps（3）In halloysite nanotubes be 9 kg；Cyanuric Chloride is 2.5 kg；Tetrahydrofuran is 170 L.
Above-mentioned steps（4）In halloysite nanotubes be 8 kg；Dissolve the N of halloysite nanotubes, N '-dimethyl formamide
For 140L；Methylcellulose is 3kg；The N of methylcellulose is dissolved, N '-dimethyl formamide is 30 L.
Above-mentioned steps（4）In methylcellulose viscosity average molecular weigh be 3000-20000, substitution value is 0.5-2.0.
The proportioning for choosing haydite concrete is as follows：
A kind of high tenacity haydite concrete, its is raw materials used to include by weight：350 parts of cement, 60 parts of super finely ground slag, fine coal
30 parts of ash, 1100 parts of haydite, 3 parts of water reducer, 100 parts of water, 20 parts of composite toughening material, 10 parts of steel fibre.
The material of said components is added in mixer in addition to water, it is dry to stir 5 minutes, water is then added, continues to stir 15 points
Clock, obtains the high tenacity haydite concrete that intensity is 48Mpa.
Embodiment 2
The activation process step be the same as Example 1 of halloysite nanotubes is similar；
The preparation of composite toughening material, is concretely comprised the following steps：
（1）By the halloysite nanotubes and thionyl chloride of activated processing in organic solvent P, stirred at 45 DEG C after 6 h,
In ultrasonic 16 h at 70 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then 35 are centrifuged with 5000 rpm rotating speed
Min, after separating solid and being cleaned through organic solvent Q, then is dried in vacuo at 25 DEG C 30 h；
（2）Halloysite nanotubes, difunctional organic compound and the triethylamine that above-mentioned steps 1 are handled are in organic solvent P
Mixing, stirred at 55 DEG C after 5 h, under nitrogen protection, in 20 kHz, 150 KW supersonic wave cleaning machine at 75 DEG C
After the h of ultrasonic reaction 6, triethylamine and solvent P are removed under reduced pressure, then after blended solvent R is cleaned, 24 h are dried in vacuo at 20 DEG C；
（3）The halloysite nanotubes and Cyanuric Chloride that above-mentioned steps 2 are handled are mixed in tetrahydrofuran, and 12 are stirred at 10 DEG C
H, in after ultrasound 3-8 h at 10 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then reacts at 0-10 DEG C 24 h
Afterwards, cleaned through tetrahydrofuran, 24 h are dried in vacuo at 15 DEG C；
（4）After the halloysite nanotubes that above-mentioned steps 3 are handled dissolve in N, N '-dimethyl formamide, it is added to and is dissolved with
In the N of methylcellulose, N '-dimethyl formamide solution, 10 h are stirred at 10-20 DEG C, 40 kHz, 300 KW it is super
In ultrasonic 3 h at 20 DEG C in sound wave cleaning machine, it is warming up under nitrogen protection after 48 DEG C of h of isothermal reaction 36, then be warming up to 80 DEG C
Isothermal reaction 24h, removes solvent under reduced pressure, after being eluted with water, and composite products are obtained after 24 h are dried in vacuo at 40 DEG C.
Above-mentioned steps（1）In activated processing halloysite nanotubes be 12 kg, thionyl chloride is 30kg；Organic solvent P
For 100 L.
Above-mentioned steps（1）In organic solvent P be toluene, 1-METHYLPYRROLIDONE or N, in N '-dimethyl acetamide
It is one or more of.
Above-mentioned steps（1）In organic solvent Q be one kind in anhydrous propanone or carbon tetrachloride.
Above-mentioned steps（2）In halloysite nanotubes be 10 kg；Difunctional organic compound is 5 kg；Triethylamine is 5
L；Organic solvent P is 120 L.
Above-mentioned steps（2）In difunctional organic compound be 1,3- propane diamine, ethylenediamine and l, 6- hexamethylene diamine in
It is a kind of.
Above-mentioned steps（2）In mixed solvent R be made up of ethanol, acetone and water, the wherein volume ratio of ethanol, acetone and water
For 2:2:6.
Above-mentioned steps（3）In halloysite nanotubes be 10 kg；Cyanuric Chloride is 3 kg；Tetrahydrofuran is 180 L.
Above-mentioned steps（4）In halloysite nanotubes be 9 kg；Dissolve the N of halloysite nanotubes, N '-dimethyl formamide
For 150L；Methylcellulose is 3 kg；The N of methylcellulose is dissolved, N '-dimethyl formamide is 30L.
Above-mentioned steps（4）In methylcellulose viscosity average molecular weigh be 3000-20000, substitution value is 0.5-2.0.
The proportioning for choosing haydite concrete is as follows：
330 parts of cement, 60 parts of super finely ground slag, 30 parts of flyash, 1000 parts of haydite, 3 parts of water reducer, 120 parts of water, composite toughening material
15 parts of 25 parts of material and steel fibre.
The material of said components is added in mixer in addition to water, it is dry to stir 5 minutes, water is then added, continues to stir 15 points
Clock, obtains the high tenacity haydite concrete that intensity is 45Mpa.
Embodiment 3
The activation process step be the same as Example 1 of halloysite nanotubes is similar；
The preparation of composite toughening material, is concretely comprised the following steps：
（1）By the halloysite nanotubes and thionyl chloride of activated processing in organic solvent P, stirred at 45 DEG C after 6 h,
In ultrasonic 16 h at 70 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then 35 are centrifuged with 5000 rpm rotating speed
Min, after separating solid and being cleaned through organic solvent Q, then is dried in vacuo at 25 DEG C 30 h；
（2）Halloysite nanotubes, difunctional organic compound and the triethylamine that above-mentioned steps 1 are handled are in organic solvent P
Mixing, stirred at 55 DEG C after 5 h, under nitrogen protection, in 20 kHz, 150 KW supersonic wave cleaning machine at 75 DEG C
After the h of ultrasonic reaction 6, triethylamine and solvent P are removed under reduced pressure, then after blended solvent R is cleaned, 24 h are dried in vacuo at 20 DEG C；
（3）The halloysite nanotubes and Cyanuric Chloride that above-mentioned steps 2 are handled are mixed in tetrahydrofuran, and 12 are stirred at 10 DEG C
H, in after ultrasound 3-8 h at 10 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then reacts at 0-10 DEG C 24 h
Afterwards, cleaned through tetrahydrofuran, 24 h are dried in vacuo at 15 DEG C；
（4）After the halloysite nanotubes that above-mentioned steps 3 are handled dissolve in N, N '-dimethyl formamide, it is added to and is dissolved with
In the N of methylcellulose, N '-dimethyl formamide solution, 10 h are stirred at 10-20 DEG C, 40 kHz, 300 KW it is super
In ultrasonic 3 h at 20 DEG C in sound wave cleaning machine, it is warming up under nitrogen protection after 48 DEG C of h of isothermal reaction 36, then be warming up to 80 DEG C
Isothermal reaction 24h, removes solvent under reduced pressure, after being eluted with water, and composite products are obtained after 24 h are dried in vacuo at 40 DEG C.
Above-mentioned steps（1）In activated processing halloysite nanotubes be 14 kg, thionyl chloride is 25kg；Organic solvent P
For 140L.
Above-mentioned steps（1）In organic solvent P be toluene, 1-METHYLPYRROLIDONE or N, in N '-dimethyl acetamide
It is one or more of.
Above-mentioned steps（1）In organic solvent Q be one kind in anhydrous propanone or carbon tetrachloride.
Above-mentioned steps（2）In halloysite nanotubes be 13kg；Difunctional organic compound is 5kg；Triethylamine is 4
L；Organic solvent P is 170 L.
Above-mentioned steps（2）In difunctional organic compound be 1,3- propane diamine, ethylenediamine and l, 6- hexamethylene diamine in
It is a kind of.
Above-mentioned steps（2）In mixed solvent R be made up of ethanol, acetone and water, the wherein volume ratio of ethanol, acetone and water
For 2:2:6.
Above-mentioned steps（3）In halloysite nanotubes be 12kg；Cyanuric Chloride is 3.5 kg；Tetrahydrofuran is 170 L.
Above-mentioned steps（4）In halloysite nanotubes be 11 kg；Dissolve the N of halloysite nanotubes, N '-dimethyl formyl
Amine is 120 L；Methylcellulose is 4kg；The N of methylcellulose is dissolved, N '-dimethyl formamide is 30 L.
Above-mentioned steps（4）In methylcellulose viscosity average molecular weigh be 3000-20000, substitution value is 0.5-2.0.
The proportioning for choosing haydite concrete is as follows：
A kind of high tenacity haydite concrete, its is raw materials used to include by weight：350 parts of cement, 60 parts of super finely ground slag, fine coal
30 parts of ash, 1200 parts of haydite, 3 parts of water reducer, 100 parts of water, 20 parts of composite toughening material, 12 parts of steel fibre.
The material of said components is added in mixer in addition to water, it is dry to stir 5 minutes, water is then added, continues to stir 15 points
Clock, obtains the high tenacity haydite concrete that intensity is 50Mpa.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (8)
1. a kind of composite toughening cracking resistance haydite concrete, it is characterised in that：Described concrete is made up of following components raw material：Press
Parts by weight meter：300-400 parts of cement, 40-80 parts of super finely ground slag, 20-40 parts of flyash, 1000-1300 parts of haydite, water reducer 3-
10-15 parts of 4 parts, 100-120 parts of water, 20-30 parts of composite toughening material and steel fibre.
2. a kind of composite toughening cracking resistance haydite concrete according to claim 1, it is characterised in that：The average grain of super finely ground slag
Footpath is 4.0-6.6 μm；The water reducer is commercially available naphthalene series high-efficiency water-reducing agent, and its water-reducing rate is 18-24%.
3. a kind of composite toughening cracking resistance haydite concrete according to claim 1, it is characterised in that：The composite toughening material
Preparation method, comprise the following steps：
（1）By the halloysite nanotubes and thionyl chloride of activated processing in organic solvent P, 6-15 is stirred at 40-55 DEG C
After h, in ultrasound 10-16 h at 70-80 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then with 4000-5000
Rpm rotating speed centrifuges 30-40 min, after separating solid and being cleaned through organic solvent Q, then is dried in vacuo 30-50 at 25-35 DEG C
h；
（2）By above-mentioned steps（1）Halloysite nanotubes, difunctional organic compound and the triethylamine of processing are in organic solvent P
Middle mixing, is stirred after 5-15 h at 50-60 DEG C, under nitrogen protection, in 20 kHz, 150 KW supersonic wave cleaning machine
In after ultrasonic reaction 6-10 h at 70-85 DEG C, removing triethylamine and organic solvent P under reduced pressure, then after blended solvent R is cleaned,
24-48 h are dried in vacuo at 10-20 DEG C；
（3）By above-mentioned steps（2）The halloysite nanotubes and Cyanuric Chloride of processing are mixed in tetrahydrofuran, are stirred at 0-10 DEG C
12-24 h are mixed, in after ultrasound 3-8 h at 0-10 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, then at 0-10 DEG C
React after 24-72 h, cleaned through tetrahydrofuran, 24-56 h are dried in vacuo at 10-15 DEG C；
（4）By above-mentioned steps（3）After the halloysite nanotubes of processing dissolve in N, N '-dimethyl formamide, dissolving is added to
Have in the N of methylcellulose, N '-dimethyl formamide solution, 5-10 h are stirred at 10-20 DEG C, in 40 kHz, 300 KW
Supersonic wave cleaning machine in ultrasound 1-5 h at 10-20 DEG C, 40-60 DEG C of isothermal reaction 36-56 h is warming up under nitrogen protection
Afterwards, then 80-95 DEG C of isothermal reaction 24-48h is warming up to, removes solvent under reduced pressure, after being eluted with water, 24- is dried in vacuo at 40 DEG C
Composite products are obtained after 48 h.
4. a kind of composite toughening cracking resistance haydite concrete according to claim 3, it is characterised in that：
Step in the composite toughening material preparation method（1）In activated processing halloysite nanotubes be 6-30 kg, sulfurous
Acyl chlorides is 10-60 kg；Organic solvent P is 50-230 L；Organic solvent P is toluene, 1-METHYLPYRROLIDONE, N, N '-dimethyl
One or more in acetamide；Organic solvent Q is anhydrous propanone or carbon tetrachloride.
5. a kind of composite toughening cracking resistance haydite concrete according to claim 3, it is characterised in that：
Step in the composite toughening material preparation method（2）In halloysite nanotubes be 5-30 kg；Difunctional organises
Compound is 1-8 kg；Triethylamine is 1-6 L；Organic solvent P is 50-220 L；Difunctional organic compound is 1,3- the third two
One kind in amine, ethylenediamine, l, 6- hexamethylene diamines；Mixed solvent R is made up of ethanol, acetone and water, wherein ethanol, acetone and water
Volume ratio is 2:2:6.
6. a kind of composite toughening cracking resistance haydite concrete according to claim 3, it is characterised in that：
Step in the composite toughening material preparation method（3）In halloysite nanotubes be 5-20 kg；Cyanuric Chloride is 0.5-
5 kg；Tetrahydrofuran is 60-230 L.
7. a kind of composite toughening cracking resistance haydite concrete according to claim 3, it is characterised in that：
The composite toughening material preparation method step（4）In halloysite nanotubes be 5-20 kg；Dissolve halloysite nanotubes
N, N '-dimethyl formamide be 50-200 L；Methylcellulose is 1-5 kg；Dissolve the N of methylcellulose, N '-dimethyl
Formamide is 10-50 L；The viscosity average molecular weigh of methylcellulose is 3000-20000, and substitution value is 0.5-2.0.
8. a kind of composite toughening cracking resistance haydite concrete according to claim 3, it is characterised in that：
The halloysite nanotubes of activated processing, the specific steps of its activation process in the preparation method of the composite toughening material
For：（1）Halloysite nanotubes are taken, is handled through mechanical crushing and uses 350 mesh sieves stand-by after selecting；
（2）Each stainless steel ball for loading 60 a diameter of 5 mm and 50 a diameter of 10 in two L nylon tanks of identical 15
Mm stainless steel ball, is then respectively adding the kg of the halloysite nanotubes after being handled through previous step 6, then 600 are added dropwise respectively
Ml absolute ethyl alcohols, and sealed with nylon lid；Two ball grinders are symmetrically put into planetary ball mill, are 350 in rotating speed
Under conditions of rpm and every 30 minutes automatic conversion direction of rotation after ball milling 40-56 h, average length is obtained for 200-230 nm
Chopped halloysite nanotubes；
（3）It is the Tween 20 that 8, concentration is 15 wt% to take the halloysite nanotubes after the chopped processing of previous step to be added to pH
The aqueous solution in ultrasonic 24 h, filtering, it is stand-by after 30 h in being dried in vacuo at 68-70 DEG C after being eluted with water.
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