CN107032681A - A kind of environmentally friendly high tenacity regeneration aggregate pervious concrete and preparation method thereof - Google Patents
A kind of environmentally friendly high tenacity regeneration aggregate pervious concrete and preparation method thereof Download PDFInfo
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- CN107032681A CN107032681A CN201710400068.2A CN201710400068A CN107032681A CN 107032681 A CN107032681 A CN 107032681A CN 201710400068 A CN201710400068 A CN 201710400068A CN 107032681 A CN107032681 A CN 107032681A
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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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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- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The invention discloses a kind of environmentally friendly high tenacity regeneration aggregate pervious concrete and preparation method thereof, count by weight, its raw material includes：320 360 parts of cement, 320 360 parts of fine sand, 20 30 parts of ultra-fine microballon, 40 60 parts of flyash, 700 900 parts of regenerated coarse aggregate, 300 400 parts of natural coarse aggregate, 34 parts of water reducer, 100 120 parts of water, 20 30 parts of composite toughening material, 0.02 0.1 parts of toughener of decrement, 5 10 parts of interior sealing compound；The composite toughening material is modified galapectite.The modification galapectite of toughness reinforcing imparts the good toughness of concrete, isotropism, fatigue resistance in the present invention, 28 days compression strength of concrete is allowd to reach 60 80Mpa, and with very high water penetration, it can apply to the concrete material fields such as the bridge floor of Longspan Bridge and overpass, and all types of tunnel arch walls.
Description
Technical field
The present invention relates to a kind of environmentally friendly high tenacity regeneration aggregate pervious concrete and preparation method thereof, belong to construction material neck
Domain.
Background technology
Using pervious concrete lay urban road and square be realize efficiently " oozing ", " row " important technical.With
Normal concrete is compared, and pervious concrete most outstanding feature is free from fine aggregate, with larger porosity, and moisture can pass through
Hole permeates rapidly.Pervious concrete is prepared using regeneration aggregate, the utilization rate of building waste on the one hand can be improved, promoted solid
The recycling of body discarded object, on the other hand can apply to urban road, square, and rainwater is reduced into underground water, reduce
Municipal drainage pressure, solves urban waterlogging, improves urban ecological environment, improves in the livable level in city, sponge city if adopted
With regeneration aggregate, the feature of environmental protection in city can be greatly improved, but the intensity of regenerative pervious concrete is generally relatively low at present, this master
If due in the preparation of pervious concrete use high intensity concrete proportioning, due to toughness be not enough easy to produce it is stronger
Fragility, particularly big this defect of aggregate regeneration concrete is more obvious, it is therefore desirable to preferable toughening material.
The content of the invention
It is an object of the invention in view of the shortcomings of the prior art, providing a kind of environmentally friendly high tenacity regeneration aggregate pervious concrete
And preparation method thereof.In the present invention modification galapectite of toughness reinforcing impart the good toughness of concrete, it is isotropism, antifatigue
Property so that 28 days compression strength of concrete can reach 60-80Mpa, and with very high water penetration, can apply to long-span bridge
The bridge floor of beam and overpass, and the concrete material field such as all types of tunnel arch walls.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of environmentally friendly high tenacity regeneration aggregate pervious concrete, is counted, its raw material includes by weight：It is 320-360 parts of cement, thin
Husky 320-360 parts, ultra-fine 20-30 parts of microballon, 40-60 parts of flyash, 700-900 parts of regenerated coarse aggregate, natural coarse aggregate 300-
400 parts, 3-4 parts of water reducer, 100-120 parts of water, 20-30 parts of composite toughening material, decrement 0.02-0.1 parts of toughener, interior maintenance
0.03-0.05 parts of 5-10 parts of agent and water reducer；The composite toughening material is modified galapectite, and its preparation method is：By angstrom Lip river
After stone activation process, reacted first with thionyl chloride, then with difunctional organic compound reaction, make galapectite area load
Labile functional groups, then reacted with Cyanuric Chloride, the galapectite that surface has active chloride triazine ring is obtained, it is finally fine with ethoxy
Dimension element is prepared by nucleophilic substitution；In the modification galapectite, the mass ratio of hydroxyethyl cellulose and galapectite is
0.1-0.3:1。
Described decrement toughener is the mixture of methyldiethoxysilane and graphene oxide, and its preparation method is：
Methyldiethoxysilane and graphene oxide are pressed 1:0.5 mass ratio mixing, forms decrement toughener.
Described water reducer is naphthalene series high-efficiency water-reducing agent, and its water-reducing rate is 18-24%.
The ultra-fine microballon is the hollow glass micropearl sorted out from flyash, and in light gray powder, density is
2.49g/cm3, specific surface area 1200m2/kg。
The fine sand is river sand, and its modulus of fineness is 2.5-3.5, and bulk density is 1500-1800kg/m3。
The preparation method of modified galapectite as described above, specifically includes following steps：
（1）By the galapectite of activated processing（1-20 kg）And thionyl chloride（5-50 kg）In organic solvent J（30-200 L）
Middle mixing, is stirred after 5-12 h at 30-50 DEG C, in super at 60-80 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine
Sound 8-12 h, then centrifuge 20-30 min with 3500-5000 rpm rotating speed, after separating solid and being cleaned through organic solvent K,
24-48 h are dried in vacuo at 30-40 DEG C again；
（2）Take step（1）Handle obtained galapectite（3-20 kg）, difunctional organic compound（1-5 kg）With 3- methyl
Pyridine（1-5 L）In organic solvent J（50-200 L）Middle mixing, is stirred after 3-12 h at 40-50 DEG C, under nitrogen protection,
In after ultrasonic reaction 5-8 h at 80-90 DEG C, being evaporated off 3- picolines and having in 20 kHz, 100 KW supersonic wave cleaning machine
Machine solvent J, then after blended solvent L is cleaned, 24-36 h are dried in vacuo at 10-20 DEG C；
（3）Take step（2）Handle obtained galapectite（2-18 kg）And Cyanuric Chloride（0.5-5 kg）In tetrahydrofuran（50-
200 L）Middle mixing, stirs 12-24 h, at 0-10 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine at 0-10 DEG C
It is clean through tetrahydrofuran after ultrasonic 2-6 h, then at 0-10 DEG C after reaction 30-72 h, it is dried in vacuo 24- at 10-15 DEG C
48 h；
（4）The galapectite for taking step 3 to handle（2-15 kg）In 1-METHYLPYRROLIDONE（50-260 L）After middle dissolving, it is added to
It is dissolved with hydroxyethyl cellulose（1-5 kg, viscosity average molecular weigh is 5000-30000, and substitution value is 0.5-2.5）Pyridine solution
（20-80 L）In, 3-10 h are stirred at 10-20 DEG C, at 10-20 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine
Ultrasonic 1-3 h, are warming up to after 40-60 DEG C of isothermal reaction 24-48 h, then be warming up to 83-95 DEG C of isothermal reaction under nitrogen protection
24-48 h, are evaporated off solvent, after being eluted with water, and obtain being modified galapectite after being dried in vacuo 24-48 h at 50 DEG C.
Organic solvent J in above-mentioned steps is one in dimethylbenzene, 1-METHYLPYRROLIDONE and N, N '-dimethyl formamide
Kind；Organic solvent K is tetrahydrofuran or acetone；The mixed solvent L is made up of ethanol, acetone and water, wherein ethanol, acetone and
The volume ratio of water is 3:1:6.
Above-mentioned steps（2）In difunctional organic compound be ethylene glycol and 1,3- propane diols in one kind.
Above-mentioned steps（1）Described in galapectite activation process step：
（A）Galapectite is taken, is handled through mechanical crushing and uses 400 mesh sieves stand-by after selecting；
（B）In two L of identical 12 ball grinder（Nylon tank）In each stainless steel ball for loading 55 a diameter of 5 mm and 50
A diameter of 10 mm stainless steel ball, is then respectively adding through step（A）The kg of galapectite 5 after processing, then 500 are added dropwise respectively
Ml absolute ethyl alcohols, and sealed with nylon lid；Two ball grinders are symmetrically put into planetary ball mill, are 300 in rotating speed
Under conditions of rpm and every 60 minutes automatic conversion direction of rotation after ball milling 45-50 h, average length is obtained for 180-200 nm
Chopped galapectite；
（C）Take step（B）The galapectite after handling that is chopped is added to the aqueous solution that pH is the Tween 40 that 8, concentration is 12 wt%
Middle ultrasonic 20 h, filtering is stand-by after 24 h in being dried in vacuo at 65-67 DEG C after being eluted with water.
Described galapectite is commercially available, its main specifications：Character：White powder；Density：2.4-2.5g/cm3；Constitute into
Point：SiO2：58.23、Al2O3：40.96、Fe2O3：0.34、TiO2：0.15、P2O5：0.14；Pipe external diameter：40-60 nm；Bore：
15-20 nm；Length：<1.1 μm；Specific surface area：52.6 m2/g。
Described Tween 40 (CAS No. 9005-66-7) is commercially available, its main specifications：Character：Amber oily liquid
Body；Acid number (KOHmg/g)：≤2.0；Hydroxyl value (KOHmg/g)：85-100；HLB value：15.5；Saponification number (KOHmg/g)：40-55；
Moisture content (%)：≤2.5.
The concrete toughness reinforcing of the present invention is fine using the excellent modification galapectite of toughness reinforcing efficiency and ethoxy with modified galapectite
Dimension element, by multi-step surface modification reaction, two kinds of toughening materials is effectively combined, so as to form a kind of unique composite toughening
System.The modification galapectite prepared can be fully dispersed in concrete, effectively plays the effect of material coordination plasticizing, assigns mixed
The good toughness of solidifying soil, isotropism, fatigue resistance, are a kind of high performance concrete toughening materials.Composite toughening is added again
The toughness of raw aggregate concrete, and 28 days compression strength of the concrete prepared can reach 60-80Mpa, can obtain height
Strong high tenacity regeneration aggregate pervious concrete, and with very high water penetration so that the regeneration aggregate pervious concrete of preparation is fitted
Sponge city is closed to use, meanwhile, the use of regeneration aggregate substantially increases the environmental-protecting performance in sponge city.
Compared with the prior art, technical scheme has the advantages that：
（1）Concrete toughness reinforcing provided by the present invention is environment-friendly with modified galapectite, has good dispersiveness in water；Should
The preparation condition of modified galapectite is readily satisfied, and raw material sources are abundant, and cost is relatively low；
（2）The concrete toughness reinforcing of the present invention is fine using the excellent modification galapectite of toughness reinforcing efficiency and ethoxy with modified galapectite
Dimension element, by multi-step surface modification reaction, two kinds of toughening materials is effectively combined, so as to form a kind of unique composite toughening
System, the modification galapectite prepared can be fully dispersed in concrete, effectively plays the effect of material coordination plasticizing, assigns
Concrete integrally has good toughness, isotropism, fatigue resistance, is a kind of high performance concrete toughening material；
（3）The modified galapectite of the concrete toughness reinforcing of the present invention can easily mix scattered equal with other concrete components
It is even, then toughness reinforcing concrete product is can obtain after marking and supporting, the bridge floor of Longspan Bridge and overpass is can apply to, and it is all kinds of
The concrete material such as type tunnel arch wall field.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described, but the present invention is not limited only to these embodiments.
Embodiment 1
A kind of environmentally friendly high tenacity regeneration aggregate pervious concrete, is counted, its raw material includes by weight：320 parts of cement, fine sand
320 parts, 20 parts of ultra-fine microballon, 40 parts of flyash, 700 parts of regenerated coarse aggregate, 300 parts of natural coarse aggregate, 3 parts of water reducer, water 100
Part, 20 parts of composite toughening material, 0.02 part of toughener of decrement, 5 parts of interior sealing compound；The composite toughening material is modified angstrom Lip river
Stone, its preparation method is：After galapectite activation process, reacted first with thionyl chloride, then with difunctional organic compound
Thing reacts, and makes galapectite area load labile functional groups, then is reacted with Cyanuric Chloride, obtains surface and there is active chloride triazine ring
Galapectite, finally prepared with hydroxyethyl cellulose by nucleophilic substitution.
Described decrement toughener is the mixture of methyldiethoxysilane and graphene oxide, and its preparation method is：
Methyldiethoxysilane and graphene oxide are pressed 1:0.5 mass ratio mixing, forms decrement toughener.
Described water reducer is naphthalene series high-efficiency water-reducing agent, and its water-reducing rate is 18.
The ultra-fine microballon is the hollow glass micropearl sorted out from flyash, and in light gray powder, density is
2.49g/cm3, specific surface area 1200m2/kg。
The fine sand is river sand, and its modulus of fineness is 2.5, and bulk density is 1500kg/m3。
The preparation method of modified galapectite as described above, specifically includes following steps：
（1）By the galapectite of activated processing（1 kg）And thionyl chloride（5 kg）In N, N '-dimethyl formamide（30 L）In
Mixing, is stirred after 5 h, in ultrasonic 12 h at 60 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine, then at 30 DEG C
30 min are centrifuged with 3500 rpm rotating speed, after separating solid and being cleaned through tetrahydrofuran, then 48 h are dried in vacuo at 30 DEG C；
（2）Take step（1）Handle obtained galapectite（3 kg）, 1,3- propane diols（1 kg）With 3- picolines（1 L）Two
Toluene（50 L）Middle mixing, is stirred at 40 DEG C after 3 h, under nitrogen protection, in 20 kHz, 100 KW ultrasonic wave cleaning
In 3- picolines and dimethylbenzene, then blended solvent L after the h of ultrasonic reaction 8 at 80 DEG C, is evaporated off in machine（By ethanol, acetone and
Water is constituted, and wherein the volume ratio of ethanol, acetone and water is 3:1:6）After cleaning, 36 h are dried in vacuo at 10 DEG C；
（3）Take step（2）Handle obtained galapectite（2 kg）And Cyanuric Chloride（0.5 kg）In tetrahydrofuran（50 L）In mix
Close, 12 h are stirred at 10 DEG C, in after ultrasonic 6 h at 10 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine, then 10
Reacted at DEG C after 30 h, cleaned through tetrahydrofuran, 48 h are dried in vacuo at 10 DEG C；
（4）The galapectite for taking step 3 to handle（2 kg）In 1-METHYLPYRROLIDONE（50 L）After middle dissolving, it is added to and is dissolved with hydroxyl
Ethyl cellulose（1 kg, viscosity average molecular weigh is 5000, and substitution value is 0.5）Pyridine solution（20 L）In, stirred at 10 DEG C
10 h, in ultrasonic 3 h at 10 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, are warming up to 40 DEG C of perseverances under nitrogen protection
After 48 h of temperature reaction, then 83 DEG C of h of isothermal reaction 48 are warming up to, solvent is evaporated off, after being eluted with water, 24 are dried in vacuo at 50 DEG C
Obtain being modified galapectite product after h.
Above-mentioned steps（1）Described in galapectite activation process step：
（A）Galapectite is taken, is handled through mechanical crushing and uses 400 mesh sieves stand-by after selecting；
（B）In two L of identical 12 ball grinder（Nylon tank）In each stainless steel ball for loading 55 a diameter of 5 mm and 50
A diameter of 10 mm stainless steel ball, is then respectively adding through step（A）The kg of galapectite 5 after processing, then 500 are added dropwise respectively
Ml absolute ethyl alcohols, and sealed with nylon lid；Two ball grinders are symmetrically put into planetary ball mill, are 300 in rotating speed
Under conditions of rpm and every 60 minutes automatic conversion direction of rotation after the h of ball milling 50, average length being chopped angstrom for 180 nm is obtained
Lip river stone；
（C）Take step（B）The galapectite after handling that is chopped is added to the aqueous solution that pH is the Tween 40 that 8, concentration is 12 wt%
Middle ultrasonic 20 h, filtering is stand-by after 24 h in being dried in vacuo at 65-67 DEG C after being eluted with water.
Described galapectite is commercially available, its main specifications：Character：White powder；Density：2.4-2.5g/cm3；Constitute into
Point：SiO2：58.23、Al2O3：40.96、Fe2O3：0.34、TiO2：0.15、P2O5：0.14；Pipe external diameter：40-60 nm；Bore：
15-20 nm；Length：<1.1 μm；Specific surface area：52.6 m2/g。
Described Tween 40 (CAS No. 9005-66-7) is commercially available, its main specifications：Character：Amber oily liquid
Body；Acid number (KOHmg/g)：≤2.0；Hydroxyl value (KOHmg/g)：85-100；HLB value：15.5；Saponification number (KOHmg/g)：40-55；
Moisture content (%)：≤2.5.
The preparation process of environmental protection high tenacity regeneration aggregate pervious concrete as described above is as follows：
1）Waste and old concrete is crushed, sorted, is sieved, is cleaned, waste and old concrete regeneration aggregate is dried to obtain, again
Waste and old concrete regeneration aggregate is carried out to sieve the waste and old concrete regenerated coarse aggregate for obtaining diameter 10mm；
2）By cement, flyash, fine sand, ultra-fine microballon, regenerated coarse aggregate, natural coarse aggregate, interior sealing compound, composite toughening material
Material pours into dry mixing 30s in concrete mixer；
3）Water, water reducer and decrement toughener are added, continues mix 60s, obtains the environmentally friendly high tenacity regeneration aggregate permeable
Concrete.
28 days compression strength of obtained regeneration aggregate pervious concrete is 67.5Mpa, and 28 days cleavage strengths are 5.56Mpa,
Soil, coefficient of permeability（25℃）For 3.2mm/s；Continuous porosity is 15%；Compression strength loss rate is after 25 Frozen-thawed cycleds
12.7%。
Embodiment 2
A kind of environmentally friendly high tenacity regeneration aggregate pervious concrete, is counted, its raw material includes by weight：360 parts of cement, fine sand
360 parts, 30 parts of ultra-fine microballon, 60 parts of flyash, 900 parts of regenerated coarse aggregate, 400 parts of natural coarse aggregate, 4 parts of water reducer, water 120
Part, 30 parts of composite toughening material, 0.1 part of toughener of decrement, 10 parts of interior sealing compound；The composite toughening material is modified angstrom Lip river
Stone, its preparation method is：After galapectite activation process, reacted first with thionyl chloride, then with difunctional organic compound
Thing reacts, and makes galapectite area load labile functional groups, then is reacted with Cyanuric Chloride, obtains surface and there is active chloride triazine ring
Galapectite, finally prepared with hydroxyethyl cellulose by nucleophilic substitution.
Described decrement toughener is the mixture of methyldiethoxysilane and graphene oxide, and its preparation method is：
Methyldiethoxysilane and graphene oxide are pressed 1:0.5 mass ratio mixing, forms decrement toughener.
Described water reducer is naphthalene series high-efficiency water-reducing agent, and its water-reducing rate is 24%.
The ultra-fine microballon is the hollow glass micropearl sorted out from flyash, and in light gray powder, density is
2.49g/cm3, specific surface area 1200m2/kg。
The fine sand is river sand, and its modulus of fineness is 3.5, and bulk density is 1800kg/m3。
The preparation method of modified galapectite as described above, specifically includes following steps：
（1）By the galapectite of activated processing（20 kg）And thionyl chloride（50 kg）In 1-METHYLPYRROLIDONE（200 L）In
Mixing, is stirred after 12 h, in ultrasonic 8 h at 80 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine, then at 50 DEG C
20 min are centrifuged with 5000 rpm rotating speed, after separating solid and being cleaned through tetrahydrofuran, then 24 h are dried in vacuo at 40 DEG C；
（2）Take step（1）Handle obtained galapectite（20 kg）, 1,3- propane diols（5 kg）With 3- picolines（5 L）In N-
Methyl pyrrolidone（200 L）Middle mixing, is stirred at 50 DEG C after 3 h, under nitrogen protection, 20 kHz, 100 KW it is super
In after the h of ultrasonic reaction 5 at 90 DEG C in sound wave cleaning machine, 3- picolines and 1-METHYLPYRROLIDONE is evaporated off, then it is blended molten
Agent L（It is made up of ethanol, acetone and water, wherein the volume ratio of ethanol, acetone and water is 3:1:6）After cleaning, the vacuum at 20 DEG C
Dry 24 h；
（3）Take step（2）Handle obtained galapectite（18 kg）And Cyanuric Chloride（5 kg）In tetrahydrofuran（200 L）In mix
Close, stir 20 h at 5 DEG C, in after ultrasonic 4 h at 5 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine, then it is anti-at 5 DEG C
Answer after 40h, cleaned through tetrahydrofuran, 24 h are dried in vacuo at 15 DEG C；
（4）The galapectite for taking step 3 to handle（15 kg）In 1-METHYLPYRROLIDONE（260 L）After middle dissolving, it is added to and is dissolved with
Hydroxyethyl cellulose（5 kg, viscosity average molecular weigh is 30000, and substitution value is 2.5）Pyridine solution（80 L）In, stirred at 20 DEG C
3 h are mixed, in ultrasonic 1 h at 20 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, 60 DEG C of perseverances are warming up under nitrogen protection
After 24 h of temperature reaction, then 95 DEG C of h of isothermal reaction 24 are warming up to, solvent is evaporated off, after being eluted with water, 48 are dried in vacuo at 50 DEG C
Obtain being modified galapectite product after h.
Above-mentioned steps（1）Described in galapectite activation process step：
（A）Galapectite is taken, is handled through mechanical crushing and uses 400 mesh sieves stand-by after selecting；
（B）In two L of identical 12 ball grinder（Nylon tank）In each stainless steel ball for loading 55 a diameter of 5 mm and 50
A diameter of 10 mm stainless steel ball, is then respectively adding through step（A）The kg of galapectite 5 after processing, then 500 are added dropwise respectively
Ml absolute ethyl alcohols, and sealed with nylon lid；Two ball grinders are symmetrically put into planetary ball mill, are 300 in rotating speed
Under conditions of rpm and every 60 minutes automatic conversion direction of rotation after the h of ball milling 48, average length being chopped angstrom for 190 nm is obtained
Lip river stone；
（C）Take step（B）The galapectite after handling that is chopped is added to the aqueous solution that pH is the Tween 40 that 8, concentration is 12 wt%
Middle ultrasonic 20 h, filtering is stand-by after 24 h in being dried in vacuo at 66 DEG C after being eluted with water.
Described galapectite is commercially available, its main specifications：Character：White powder；Density：2.4-2.5g/cm3；Constitute into
Point：SiO2：58.23、Al2O3：40.96、Fe2O3：0.34、TiO2：0.15、P2O5：0.14；Pipe external diameter：40-60 nm；Bore：
15-20 nm；Length：<1.1 μm；Specific surface area：52.6 m2/g。
Described Tween 40 (CAS No. 9005-66-7) is commercially available, its main specifications：Character：Amber oily liquid
Body；Acid number (KOHmg/g)：≤2.0；Hydroxyl value (KOHmg/g)：85-100；HLB value：15.5；Saponification number (KOHmg/g)：40-55；
Moisture content (%)：≤2.5.
The preparation process of environmental protection high tenacity regeneration aggregate pervious concrete as described above is as follows：
1）Waste and old concrete is crushed, sorted, is sieved, is cleaned, waste and old concrete regeneration aggregate is dried to obtain, again
Waste and old concrete regeneration aggregate is carried out to sieve the waste and old concrete regenerated coarse aggregate for obtaining diameter 15mm；
2）By cement, flyash, fine sand, ultra-fine microballon, regenerated coarse aggregate, natural coarse aggregate, interior sealing compound, composite toughening material
Material pours into dry mixing 60s in concrete mixer；
3）Water, water reducer and decrement toughener are added, continues mix 120s, obtains the environmentally friendly high tenacity regeneration aggregate permeable
Concrete.
28 days compression strength of obtained regeneration aggregate pervious concrete is 75.8Mpa, and 28 days cleavage strengths are 5.96Mpa,
Soil, coefficient of permeability（25℃）For 3.15mm/s；Continuous porosity is 15%；Compression strength loss rate is after 25 Frozen-thawed cycleds
12.3%。
Embodiment 3
A kind of environmentally friendly high tenacity regeneration aggregate pervious concrete, is counted, its raw material includes by weight：330 parts of cement, fine sand
330 parts, 25 parts of ultra-fine microballon, 50 parts of flyash, 800 parts of regenerated coarse aggregate, 350 parts of natural coarse aggregate, 3.5 parts of water reducer, water
110 parts, 25 parts of composite toughening material, 0.06 part of toughener of decrement, 8 parts of interior sealing compound；The composite toughening material is modified angstrom
Lip river stone, its preparation method is：After galapectite activation process, react, then organised with difunctional with thionyl chloride first
Compound reacts, and makes galapectite area load labile functional groups, then is reacted with Cyanuric Chloride, obtains surface and exists vivaciously containing chlorotriazine
The galapectite of ring, is finally prepared with hydroxyethyl cellulose by nucleophilic substitution.
Described decrement toughener is the mixture of methyldiethoxysilane and graphene oxide, and its preparation method is：
Methyldiethoxysilane and graphene oxide are pressed 1:0.5 mass ratio mixing, forms decrement toughener.
Described water reducer is naphthalene series high-efficiency water-reducing agent, and its water-reducing rate is 22%.
The ultra-fine microballon is the hollow glass micropearl sorted out from flyash, and in light gray powder, density is
2.49g/cm3, specific surface area 1200m2/kg。
The fine sand is river sand, and its modulus of fineness is 3.0, and bulk density is 1600kg/m3。
The preparation method of modified galapectite as described above, specifically includes following steps：
（1）By the galapectite of activated processing（15 kg）And thionyl chloride（35 kg）In dimethylbenzene（150 L）Middle mixing, 40
Stirred at DEG C after 10 h, in ultrasonic 10 h at 70 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine, then with 4000
Rpm rotating speed centrifuges 25 min, after separating solid and being cleaned through acetone, then is dried in vacuo at 35 DEG C 40 h；
（2）Take step（1）Handle obtained galapectite（12 kg）, ethylene glycol（3.5 kg）With 3- picolines（3.5 L）In N-
Methyl pyrrolidone（120 L）Middle mixing, is stirred at 45 DEG C after 8 h, under nitrogen protection, 20 kHz, 100 KW it is super
In after the h of ultrasonic reaction 6 at 85 DEG C in sound wave cleaning machine, 3- picolines and 1-METHYLPYRROLIDONE is evaporated off, then it is blended molten
Agent L（It is made up of ethanol, acetone and water, wherein the volume ratio of ethanol, acetone and water is 3:1:6）After cleaning, the vacuum at 15 DEG C
Dry 30 h；
（3）Take step（2）Handle obtained galapectite（10 kg）And Cyanuric Chloride（3 kg）In tetrahydrofuran（130 L）In mix
Close, 20 h are stirred at 0 DEG C, in after ultrasonic 4 h at 0 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine, then at 0 DEG C
After 60 h of lower reaction, cleaned through tetrahydrofuran, 40 h are dried in vacuo at 12 DEG C；
（4）The galapectite for taking step 3 to handle（9 kg）In 1-METHYLPYRROLIDONE（200 L）After middle dissolving, it is added to and is dissolved with
Hydroxyethyl cellulose（3 kg, viscosity average molecular weigh is 15000, and substitution value is 1.5）Pyridine solution（60 L）In, stirred at 15 DEG C
6 h are mixed, in ultrasonic 2 h at 15 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine, 55 DEG C of perseverances are warming up under nitrogen protection
After 40 h of temperature reaction, then 90 DEG C of h of isothermal reaction 36 are warming up to, solvent is evaporated off, after being eluted with water, 32 are dried in vacuo at 50 DEG C
Obtain 10.2 kg after h to be modified in galapectite product, the modification galapectite, the mass content ratio of hydroxyethyl cellulose and galapectite
About 0.2:1, it can be applied to the toughness reinforcing field of concrete.
Above-mentioned steps（1）Described in galapectite activation process step：
（A）Galapectite is taken, is handled through mechanical crushing and uses 400 mesh sieves stand-by after selecting；
（B）In two L of identical 12 ball grinder（Nylon tank）In each stainless steel ball for loading 55 a diameter of 5 mm and 50
A diameter of 10 mm stainless steel ball, is then respectively adding through step（A）The kg of galapectite 5 after processing, then 500 are added dropwise respectively
Ml absolute ethyl alcohols, and sealed with nylon lid；Two ball grinders are symmetrically put into planetary ball mill, are 300 in rotating speed
Under conditions of rpm and every 60 minutes automatic conversion direction of rotation after the h of ball milling 45, average length being chopped angstrom for 200 nm is obtained
Lip river stone；
（C）Take step（B）The galapectite after handling that is chopped is added to the aqueous solution that pH is the Tween 40 that 8, concentration is 12 wt%
Middle ultrasonic 20 h, filtering is stand-by after 24 h in being dried in vacuo at 65-67 DEG C after being eluted with water.
Described galapectite is commercially available, its main specifications：Character：White powder；Density：2.4-2.5g/cm3；Constitute into
Point：SiO2：58.23、Al2O3：40.96、Fe2O3：0.34、TiO2：0.15、P2O5：0.14；Pipe external diameter：40-60 nm；Bore：
15-20 nm；Length：<1.1 μm；Specific surface area：52.6 m2/g。
Described Tween 40 (CAS No. 9005-66-7) is commercially available, its main specifications：Character：Amber oily liquid
Body；Acid number (KOHmg/g)：≤2.0；Hydroxyl value (KOHmg/g)：85-100；HLB value：15.5；Saponification number (KOHmg/g)：40-55；
Moisture content (%)：≤2.5.
The preparation process of environmental protection high tenacity regeneration aggregate pervious concrete as described above is as follows：
1）Waste and old concrete is crushed, sorted, is sieved, is cleaned, waste and old concrete regeneration aggregate is dried to obtain, again
Waste and old concrete regeneration aggregate is carried out to sieve the waste and old concrete regenerated coarse aggregate for obtaining diameter 12mm；
2）By cement, flyash, fine sand, ultra-fine microballon, regenerated coarse aggregate, natural coarse aggregate, interior sealing compound, composite toughening material
Material pours into dry mixing 45s in concrete mixer；
3）Water, water reducer and decrement toughener are added, continues mix 100s, obtains the environmentally friendly high tenacity regeneration aggregate permeable
Concrete.
28 days compression strength of obtained regeneration aggregate pervious concrete is 80.2Mpa, and 28 days cleavage strengths are 6.25Mpa,
Soil, coefficient of permeability（25℃）For 3.05mm/s；Continuous porosity is 15%；Compression strength loss rate is after 25 Frozen-thawed cycleds
11.9%。
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 (9)
1. a kind of environmentally friendly high tenacity regeneration aggregate pervious concrete, it is characterised in that：Count by weight, the original of the concrete
Material includes：320-360 parts of cement, 320-360 parts of fine sand, ultra-fine microballon 20-30 parts, 40-60 parts of flyash, regenerated coarse aggregate
700-900 parts, 300-400 parts of natural coarse aggregate, 3-4 parts of water reducer, 100-120 parts of water, 20-30 parts of composite toughening material, subtract
0.02-0.1 parts of contracting toughener, interior sealing compound 5-10 parts；The composite toughening material is modified galapectite, and its preparation method is：
After galapectite activation process, reacted first with thionyl chloride, then with difunctional organic compound reaction, make galapectite table
Face loads labile functional groups, then is reacted with Cyanuric Chloride, obtains the galapectite that surface has active chloride triazine ring, finally and hydroxyl
Ethyl cellulose is prepared by nucleophilic substitution；In the modification galapectite, the quality of hydroxyethyl cellulose and galapectite
Than for 0.1-0.3:1.
2. environmentally friendly high tenacity regeneration aggregate pervious concrete according to claim 1, it is characterised in that：The decrement toughness reinforcing
Agent is the mixture of methyldiethoxysilane and graphene oxide, and its preparation method is：By methyldiethoxysilane and oxygen
Graphite alkene presses 1:0.5 mass ratio mixing, forms decrement toughener.
3. environmentally friendly high tenacity regeneration aggregate pervious concrete according to claim 1, it is characterised in that：Described diminishing
Agent is naphthalene series high-efficiency water-reducing agent, and its water-reducing rate is 18-24%；The ultra-fine microballon is the hollow glass sorted out from flyash
Glass microballon, density is 2.49g/cm3, specific surface area 1200m2/kg；The fine sand is river sand, and its modulus of fineness is 2.5-3.5,
Bulk density is 1500-1800kg/m3。
4. environmentally friendly high tenacity regeneration aggregate pervious concrete according to claim 1, it is characterised in that：The modification angstrom Lip river
The preparation method of stone, specifically includes following steps：
（1）The galapectite and thionyl chloride of activated processing are mixed in organic solvent J, 5-12 h are stirred at 30-50 DEG C
Afterwards, in ultrasound 8-12 h at 60-80 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine, then with 3500-5000 rpm
Rotating speed centrifugation 20-30 min, after separating solid and being cleaned through organic solvent K, then be dried in vacuo at 30-40 DEG C 24-48 h；
（2）Take step（1）Obtained galapectite, difunctional organic compound and 3- picolines are handled in organic solvent J
Mixing, is stirred after 3-12 h at 40-50 DEG C, under nitrogen protection, in 20 kHz, 100 KW supersonic wave cleaning machine in
At 80-90 DEG C after ultrasonic reaction 5-8 h, 3- picolines and organic solvent J are evaporated off, then after blended solvent L is cleaned, in 10-
24-36 h are dried in vacuo at 20 DEG C；
（3）Take step（2）Handle obtained galapectite and Cyanuric Chloride is mixed in tetrahydrofuran, 12- is stirred at 0-10 DEG C
24 h, in after ultrasound 2-6 h at 0-10 DEG C in 20 kHz, 100 KW supersonic wave cleaning machine, then react at 0-10 DEG C
After 30-72 h, cleaned through tetrahydrofuran, 24-48 h are dried in vacuo at 10-15 DEG C；
（4）Take step（3）After the galapectite of processing dissolves in 1-METHYLPYRROLIDONE, it is added to and is dissolved with hydroxyethyl cellulose
Pyridine in, 3-10 h are stirred at 10-20 DEG C, in ultrasonic at 10-20 DEG C in 40 kHz, 200 KW supersonic wave cleaning machine
1-3 h, are warming up to after 40-60 DEG C of isothermal reaction 24-48 h, then be warming up to 83-95 DEG C of isothermal reaction 24-48 under nitrogen protection
H, is evaporated off solvent, after being eluted with water, and obtains being modified galapectite after being dried in vacuo 24-48 h at 50 DEG C.
5. environmentally friendly high tenacity regeneration aggregate pervious concrete according to claim 4, it is characterised in that：The organic solvent
J is one kind in dimethylbenzene, 1-METHYLPYRROLIDONE and N, N '-dimethyl formamide；The organic solvent K be tetrahydrofuran or
Acetone；The mixed solvent L is made up of ethanol, acetone and water, and wherein the volume ratio of ethanol, acetone and water is 3:1:6.
6. environmentally friendly high tenacity regeneration aggregate pervious concrete according to claim 4, it is characterised in that：The step（2）
In difunctional organic compound be ethylene glycol and 1,3- propane diols in one kind.
7. environmentally friendly high tenacity regeneration aggregate pervious concrete according to claim 4, it is characterised in that：Step（1）In,
The galapectite of activated processing is 1-20 kg, and thionyl chloride is 5-50 kg, and organic solvent J is 30-200 L；Step（2）In,
The galapectite is 3-20 kg, and difunctional organic compound is that 1-5 kg, 3- picoline are 1-5 L, and organic solvent J is
50-200 L；Step（3）In, the galapectite is 2-18 kg, and Cyanuric Chloride is 0.5-5 kg, and tetrahydrofuran is 50-200 L；
Step（4）In, the galapectite is 2-15 kg, and 1-METHYLPYRROLIDONE is 50-260 L, and hydroxyethyl cellulose is 1-5 kg,
Pyridine is 20-80 L.
8. environmentally friendly high tenacity regeneration aggregate pervious concrete according to claim 4, it is characterised in that：Step（4）Middle institute
The viscosity average molecular weigh for the hydroxyethyl cellulose stated is 5000-30000, and substitution value is 0.5-2.5.
9. environmentally friendly high tenacity regeneration aggregate pervious concrete according to claim 4, it is characterised in that：Step（1）Middle institute
The activation process step for the galapectite stated is：
（A）Galapectite is taken, is handled through mechanical crushing and uses 400 mesh sieves stand-by after selecting；
（B）Each stainless steel ball for loading 55 a diameter of 5 mm and 50 a diameter of 10 in two L of identical 12 ball grinder
Mm stainless steel ball, is then respectively adding through step（A）The kg of galapectite 5 after processing, then the anhydrous second of 500 ml is added dropwise respectively
Alcohol, and sealed with nylon lid；Two ball grinders are symmetrically put into planetary ball mill, are 300 rpm and every 60 in rotating speed
Under conditions of minute automatic conversion direction of rotation after ball milling 45-50 h, be chopped angstrom Lip river of the average length for 180-200 nm is obtained
Stone；
（C）Take step（B）The galapectite after handling that is chopped is added to the aqueous solution that pH is the Tween 40 that 8, concentration is 12 wt%
Middle ultrasonic 20 h, filtering is stand-by after 24 h in being dried in vacuo at 65-67 DEG C after being eluted with water.
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