CN107651888A - A kind of Stability of Modified Asphalt Mortar - Google Patents
A kind of Stability of Modified Asphalt Mortar Download PDFInfo
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- CN107651888A CN107651888A CN201710978135.9A CN201710978135A CN107651888A CN 107651888 A CN107651888 A CN 107651888A CN 201710978135 A CN201710978135 A CN 201710978135A CN 107651888 A CN107651888 A CN 107651888A
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- powder
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- charing
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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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
-
- 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
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
Abstract
The invention discloses a kind of Stability of Modified Asphalt Mortar, belong to building material technical field.The present invention crushes diatomite, adds calcium bicarbonate solution and is stirred, Frozen-thawed cycled, filter, dries, obtain microfine diatomaceous powder；Microfine diatomaceous powder and dopamine solution are stirred, filters, obtains pretreatment microfine diatomaceous powder；Microfine diatomaceous powder and hydrogen peroxide heating stirring will be pre-processed, will be filtered, will be washed, dries, produces modified superfine diatomite powder；By peanut shell ball mill grinding, sieving, peanut shell powder is obtained；Peanut shell powder is carbonized, milk is added by being stirred, filters, dry, charing peanut shell powder must be pre-processed；By pretreatment charing peanut shell powder and liquor potassic permanganate heating stirring, filter, dry, produce modified charing peanut shell powder end；By pitch, mixed mineral powder and additive package melt, and produce Stability of Modified Asphalt Mortar.Stability of Modified Asphalt Mortar high temperature stability provided by the invention is good, and viscosity increases under hot conditions.
Description
Technical field
The invention discloses a kind of Stability of Modified Asphalt Mortar, belong to building material technical field.
Background technology
Asphalt is a kind of composite, is a kind of decentralized system with multistage spacial framework, mainly by
Asphalt mastic and aggregate two parts composition.Wherein rubber cement, which plays a part of cohering, gathers materials and fills space, and rubber cement performance is to pitch
Compound viscoelasticity has material impact, thus it is significant to further investigate rubber cement performance.In addition, asphalt chats
Powder content accounts for 4~8%, and miberal powder main function in pitch for increase volume and promotes physical reaction, forms asphalt mastic, increase
Structure bitumen content and thickness, improving cohesion total between pitch and miberal powder so that the ratio of free pitch accordingly reduces, from
And increase asphalt mastic viscosity, improve it and resist the performance of high temperature.Diatomite is a kind of active miberal powder, is had in China extremely abundant
Resource, the laboratory results and examination paving Experiment Road testing result show that diatomite can obtain the pavement performance of bituminous paving
To increasing substantially.But the conventional road for being concentrated mainly on asphalt for diatomite modified asphalt performance study at present is used
Performance.And asphalt mastic is as a kind of most important constituent in asphalt, its every macroscopical pavement performance it is good
Bad is the key factor for influenceing performance of asphalt mixture.Most of existing research on Diatomite Modified Asphalt Mastic be from
Microstructure angle and influence of the diatomite to matrix pitch performance is merely analyzed by way of changing diatomite volume, and
It has ignored the effect that miberal powder is dispersed in as dispersed phase played in high-consistency pitch medium.Compared to other method of modifying（As gathered
It is polymer modified）, the outstanding feature being modified using fiber is to prevent the extension in crack in mixture structure（Including warm draw
Seam and reflection crack）, rutting deformation and fatigue rupture are reduced, there is obvious action for extending bituminous paving service life.
The admixture of fiber directly affects the high temperature performance of asphalt mastic.But also there is steady at high temperature for current asphalt mastic
The problem of qualitative bad, therefore, also need further to study asphalt mastic.
The content of the invention
The present invention solves the technical problem of：For it is unstable under traditional asphalt rubber cement high temperature the problem of, there is provided
A kind of Stability of Modified Asphalt Mortar.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of Stability of Modified Asphalt Mortar, it is made up of the raw material of following parts by weight：
30~40 parts of pitch
10~20 parts of mixed mineral powder
8~10 parts of additive package
The mixed mineral powder is made up of the raw material of following parts by weight：10~20 parts of modified superfine diatomite powders, 10~20
Part basalt fibre, 5~6 parts of nano magnesias, 5~6 parts of graphite oxides；
The additive package is made up of the raw material of following parts by weight：10~20 parts of glass fibres, 5~6 portions of charing peanuts
Shell powder, 10~20 parts of animal bloods, 10~20 parts of animal hairs；
The preparation process of the modified superfine diatomite powder is：
（1）By diatomite ball mill grinding, sieving, refinement powder is obtained；
（2）By above-mentioned gained refinement powder and unsaturated carbonate hydrogen calcium solution in mass ratio 1：50~1：100 are stirred, and freeze thawing follows
Ring, filter, dry, obtain microfine diatomaceous powder；
（3）By above-mentioned gained microfine diatomaceous powder and dopamine solution in mass ratio 1：50~1：100 are stirred, immersion,
Filtering, obtains pretreatment microfine diatomaceous powder；
（4）By above-mentioned gained pretreatment microfine diatomaceous powder and hydrogen peroxide in mass ratio 1：50~1：100 mixing, heating are stirred
Mix, soak, filter, wash, dry, produce modified superfine diatomite powder.
The preparation process of the graphite oxide is：By graphite and liquor potassic permanganate in mass ratio 1：50~1：100 mixing,
Heating stirring, pH is adjusted, soaked, filtered, dried, produce graphite oxide.
The charing peanut shell powder can also be modified charing peanut shell powder end；The modified charing peanut shell powder end
Preparation process is：By peanut shell ball mill grinding, sieving, peanut shell powder is obtained；By peanut shell powder nitrogen charging high temperature carbonization, dropped with stove
Temperature, peanut shell powder must be carbonized；Will charing peanut shell powder and milk in mass ratio 1：50~1：100 are stirred, and filter, and do
It is dry, charing peanut shell powder must be pre-processed；By pretreatment charing peanut shell powder and liquor potassic permanganate in mass ratio 1：50~
1：100 mixing, heating stirring, soak, and filter, and dry, and produce modified charing peanut shell powder end.
The animal blood is pig blood, any one in duck blood or chicken blood.
The animal hair is pig hair, any one in wool or ox hair.
Step（2）The unsaturated carbonate hydrogen calcium solution is the calcium bicarbonate solution under the conditions of 20~22 DEG C.
The beneficial effects of the invention are as follows：
（1）The present invention first, is circulated by adding modified superfine diatomite powder by ball mill grinding, and by multigelation,
So that diatomite particle is more and small so that the specific surface area of diatomite powder particle and Asphalt Contactor is bigger, in use,
More asphalt colloids, the increase of structure asphalt thickness can be adsorbed, free bitumen content is reduced so that asphalt mastic is in high temperature
Under the conditions of viscosity increase, secondly, diatomite soaks through dopamine solution, the active group on increase diatomite surface, then through dioxygen
Water soaks, and strengthens the activity of diatomite surface active groups so that diatomite particle adsorbs more asphalt colloids, structure pitch
Thickness degree further increases, and free bitumen content is reduced so that viscosity increases asphalt mastic under the high temperature conditions, strengthens system
High temperature stability；
（2）The present invention is by adding modified charing peanut shell powder end, and first, charing peanut shell powder is soaked through milk so that milk
In active component be adsorbed in charing peanut shell powder, then soak through liquor potassic permanganate so that the protein hydrolysis in grandmother,
The active group on increase charing peanut shell powder surface, increase the absorption property at modified charing peanut shell powder end, being capable of adsorptive pitch
In lightweight oil, the structure pitch between modified charing peanut shell powder end interface and free pitch after absorption is that viscosity is larger
Resin and asphalt, so as to improve the high temperature stability performance of asphalt mastic.
Embodiment
Diatomite is placed in ball mill, under the conditions of rotating speed is 400~500r/min, after ball mill grinding, excessively 100~
The sieve of 200 mesh, obtain refinement powder；Will refinement powder and calcium bicarbonate solution in mass ratio 1：50~1：100 are placed in No. 1 beaker
In, under the conditions of rotating speed is 400~500r/min, after being stirred 40~50min, mixed liquor is obtained, then mixed liquor is put
1~2h is freezed in refrigerator, frozen materials is obtained, then frozen materials is placed in water-bath, under the conditions of temperature is 90~100 DEG C
Melt completely, after such Frozen-thawed cycled 5~7 times, filtering, obtain pretreatment microfine diatomaceous powder, and ultra-fine diatom will be pre-processed
Native powder, which is placed in baking oven, dries 1~2h, obtains microfine diatomaceous powder；Will refinement powder and mass concentration 2g/L dopamine solutions
In mass ratio 1：50~1：100 are placed in No. 2 beakers, under the conditions of rotating speed is 300~400r/min, it is stirred 20~
30min, after soaking 1~2h, soak is obtained, then soak is filtered, obtain pretreatment microfine diatomaceous powder；It will pre-process ultra-fine
Diatomite powder and mass fraction are 20~30% hydrogen peroxide in mass ratio 1：50~1：100 add in single-necked flask, then will be single
Mouthful flask is placed in digital display and tested the speed in constant temperature blender with magnetic force, is 60~80 DEG C in temperature, rotating speed is 400~500r/min conditions
Under, 20~30min is stirred, after soaking 1~2h, obtains mixed liquor, then mixed liquor is filtered, filter residue is obtained, then uses filter residue
Deionized water is washed 3~5 times, then the filter residue after washing is placed in vacuum freezing drying oven and dries 1~2h, produces modified superfine
Diatomite powder；By the liquor potassic permanganate in mass ratio 1 that graphite and mass fraction are 20~30%：50~1：100 add three mouthfuls
In flask, three-necked flask is then placed in digital display and tested the speed in constant temperature blender with magnetic force, in temperature be 60~80 DEG C, rotating speed 400
Under the conditions of~500r/min, 20~30min is stirred, then it is 8~10% sulfuric acid that mass fraction, which is added dropwise, to three-necked flask with dropper
PH is adjusted to 4.5~4.7, then soaks 1~2h, pickle liquor is obtained, then filters pickle liquor, obtain filter cake, then filter cake is placed in very
1~2h is dried in vacuum freecing-dry case, produces graphite oxide；Peanut shell is placed in ball mill, in rotating speed be 400~500r/
Under the conditions of min, after ball mill grinding, the sieve of 70~80 mesh is crossed, obtains peanut shell powder；Peanut shell powder is placed in retort, and
Nitrogen is passed through into stove with 60~90mL/min speed, is 480~550 DEG C in temperature, rotating speed is 100~200r/min conditions
Under, under nitrogen protective condition, insulation 2~3h of charing, room temperature is down to stove, peanut shell powder must be carbonized；Peanut shell will be carbonized
Powder and milk in mass ratio 1：50~1：100 are placed in No. 3 beakers, and under the conditions of rotating speed is 200~300r/min, stirring is mixed
40~50min is closed, obtains mixed slurry, then mixed slurry is filtered, charing peanut shell powder must be pre-processed, will then pre-process charcoal
Change peanut shell powder and be placed in vacuum freezing drying oven dry 1~2h, charing peanut shell powder must be pre-processed；Pretreatment is carbonized
Peanut shell powder and the liquor potassic permanganate mass ratio 1 that mass fraction is 20~30%：50~1：100 are placed in No. 4 beakers, then
No. 4 beakers are placed in into digital display to test the speed in constant temperature blender with magnetic force, are 60~80 DEG C in temperature, rotating speed is 400~500r/min bars
Under part, 20~30min is stirred, after soaking 1~2h, mixed material is obtained, then filters mixed material, obtain after-treatment charcoal
Change peanut shell powder, then after-treatment charing peanut shell powder is placed in vacuum freezing drying oven and dries 1~2h, produce modification
Carbonize peanut shell powder；Count in parts by weight, by 10~20 parts of modified superfine diatomite powders, 10~20 parts of basalt fibres, 5
~6 parts of nano magnesias, 5~6 parts of graphite oxide mixing, obtain mixed mineral powder；Count in parts by weight, by 10~20 parts of glass fibers
Dimension, 5~6 parts of modified charing peanut shell powder ends, 10~20 parts of animal bloods, 10~20 parts of animal hair mixing, must mix addition
Agent；Count in parts by weight, by 30~40 parts of pitches, 10~20 parts of mixed mineral powders and 8~10 parts of additive packages are placed in crucible,
Under the conditions of temperature is 175~185 DEG C, is stirred to complete and melted with glass bar, produce Stability of Modified Asphalt Mortar.The animal blood
Any one for pig blood, in duck blood or chicken blood.The animal hair is pig hair, any one in wool or ox hair.It is described
Unsaturated carbonate hydrogen calcium solution is the calcium bicarbonate solution under the conditions of 20~22 DEG C.
Example 1
Diatomite is placed in ball mill, under the conditions of rotating speed is 500r/min, after ball mill grinding, the sieve of 200 mesh is crossed, must refine
Powder；Will refinement powder and calcium bicarbonate solution in mass ratio 1：100 are placed in No. 1 beaker, in rotating speed be 500r/min conditions
Under, after being stirred 50min, mixed liquor is obtained, then mixed liquor is placed in refrigerator and freezes 2h, frozen materials are obtained, then will
Frozen materials are placed in water-bath, are melted completely under the conditions of being 100 DEG C in temperature, after such Frozen-thawed cycled 7 times, filtering, obtain pre- place
Microfine diatomaceous powder is managed, and pretreatment microfine diatomaceous powder is placed in baking oven and dries 2h, obtains microfine diatomaceous powder；Will
Refine powder and mass concentration 2g/L dopamine solutions in mass ratio 1：100 are placed in No. 2 beakers, in rotating speed be 400r/min bars
Under part, 30min is stirred, after soaking 2h, obtains soak, then soak is filtered, obtains pretreatment microfine diatomaceous powder；Will
It is 30% hydrogen peroxide in mass ratio 1 that microfine diatomaceous powder, which is pre-processed, with mass fraction：100 add in single-necked flask, then will be single
Mouthful flask is placed in digital display and tested the speed in constant temperature blender with magnetic force, is 80 DEG C in temperature, under the conditions of rotating speed is 500r/min, is stirred
30min, after soaking 2h, mixed liquor is obtained, then mixed liquor is filtered, obtained filter residue, then filter residue is washed with deionized 5 times, then
Filter residue after washing is placed in vacuum freezing drying oven and dries 2h, produces modified superfine diatomite powder；By graphite and quality
Fraction is 30% liquor potassic permanganate in mass ratio 1：100 are added in three-necked flask, and three-necked flask then is placed in into digital display and tested the speed
In constant temperature blender with magnetic force, it is 80 DEG C in temperature, under the conditions of rotating speed is 500r/min, is stirred 30min, then with dropper to three
Mouthful flask be added dropwise mass fraction be 10% sulphur acid for adjusting pH to 4.7, then soak 2h, obtain pickle liquor, then filter pickle liquor, obtain
Filter cake, then filter cake is placed in vacuum freezing drying oven and dries 2h, produce graphite oxide；Peanut shell is placed in ball mill, in
Under the conditions of rotating speed is 500r/min, after ball mill grinding, the sieve of 80 mesh is crossed, obtains peanut shell powder；Peanut shell powder is placed in charing
In stove, and nitrogen is passed through into stove with 90mL/min speed, in temperature be 550 DEG C, rotating speed be 200r/min under the conditions of, in nitrogen
Under protective condition, insulation charing 3h, room temperature is down to stove, peanut shell powder must be carbonized；Charing peanut shell powder is pressed with milk
Mass ratio 1：100 are placed in No. 3 beakers, under the conditions of rotating speed is 300r/min, are stirred 50min, obtain mixed slurry, then will
Mixed slurry filters, and must pre-process charing peanut shell powder, and pretreatment charing peanut shell powder then is placed in into vacuum refrigeration does
2h is dried in dry case, charing peanut shell powder must be pre-processed；The height that charing peanut shell powder will be pre-processed with mass fraction is 30%
Potassium manganate solution mass ratio 1：100 are placed in No. 4 beakers, then No. 4 beakers are placed in into digital display and tested the speed in constant temperature blender with magnetic force, in
Temperature is 80 DEG C, under the conditions of rotating speed is 500r/min, is stirred 30min, after soaking 2h, obtains mixed material, then will mixing
Material filtering, after-treatment charing peanut shell powder is obtained, then after-treatment charing peanut shell powder is placed in vacuum freeze drying
2h is dried in case, produces modified charing peanut shell powder end；Count in parts by weight, by 20 parts of modified superfine diatomite powders, 20 parts
Basalt fibre, 6 parts of nano magnesias, 6 parts of graphite oxide mixing, obtain mixed mineral powder；Count in parts by weight, by 20 parts of glass fibers
Dimension, 6 parts of modified charing peanut shell powder ends, 20 parts of animal bloods, 20 parts of animal hair mixing, obtains additive package；By weight
Number meter, by 40 parts of pitches, 20 parts of mixed mineral powders and 10 parts of additive packages are placed in crucible, under the conditions of temperature is 185 DEG C, are used
Glass bar, which is stirred to complete, to be melted, and produces Stability of Modified Asphalt Mortar.The animal blood is pig blood.The animal hair is pig hair.
The unsaturated carbonate hydrogen calcium solution is the calcium bicarbonate solution under the conditions of 22 DEG C.
Example 2
Diatomite is placed in ball mill, under the conditions of rotating speed is 500r/min, after ball mill grinding, the sieve of 200 mesh is crossed, must refine
Powder；Will refinement powder and calcium bicarbonate solution in mass ratio 1：100 are placed in No. 1 beaker, in rotating speed be 500r/min conditions
Under, after being stirred 50min, mixed liquor is obtained, then mixed liquor is placed in refrigerator and freezes 2h, frozen materials are obtained, then will
Frozen materials are placed in water-bath, are melted completely under the conditions of being 100 DEG C in temperature, after such Frozen-thawed cycled 7 times, filtering, obtain pre- place
Microfine diatomaceous powder is managed, and pretreatment microfine diatomaceous powder is placed in baking oven and dries 2h, obtains microfine diatomaceous powder；Will
Refine powder and mass concentration 2g/L dopamine solutions in mass ratio 1：100 are placed in No. 2 beakers, in rotating speed be 400r/min bars
Under part, 30min is stirred, after soaking 2h, obtains soak, then soak is filtered, obtains pretreatment microfine diatomaceous powder；Will
Graphite and the liquor potassic permanganate in mass ratio 1 that mass fraction is 30%：100 add in three-necked flask, then put three-necked flask
In digital display tests the speed constant temperature blender with magnetic force, it is 80 DEG C in temperature, under the conditions of rotating speed is 500r/min, is stirred 30min, then
With dropper to three-necked flask be added dropwise mass fraction be 10% sulphur acid for adjusting pH to 4.7, then soak 2h, pickle liquor obtained, then by acidleach
Liquid is filtered, and obtains filter cake, then filter cake is placed in vacuum freezing drying oven and dries 2h, produces graphite oxide；Peanut shell is placed in ball
In grinding machine, under the conditions of rotating speed is 500r/min, after ball mill grinding, the sieve of 80 mesh is crossed, obtains peanut shell powder；By peanut shell powder
It is placed in retort, and nitrogen is passed through into stove with 90mL/min speed, is 550 DEG C in temperature, rotating speed is 200r/min conditions
Under, under nitrogen protective condition, insulation charing 3h, room temperature is down to stove, peanut shell powder must be carbonized；Peanut shell powder will be carbonized
With milk in mass ratio 1：100 are placed in No. 3 beakers, under the conditions of rotating speed is 300r/min, is stirred 50min, must mix
Slurry, then mixed slurry is filtered, charing peanut shell powder must be pre-processed, is then placed in pretreatment charing peanut shell powder very
2h is dried in vacuum freecing-dry case, charing peanut shell powder must be pre-processed；By pretreatment charing peanut shell powder and mass fraction
For 30% liquor potassic permanganate mass ratio 1：100 are placed in No. 4 beakers, then No. 4 beakers are placed in into the digital display constant temperature magnetic force that tests the speed and stirred
Mix in device, be 80 DEG C in temperature, under the conditions of rotating speed is 500r/min, be stirred 30min, after soaking 2h, obtain mixed material, with
Mixed material is filtered afterwards, obtains after-treatment charing peanut shell powder, then after-treatment charing peanut shell powder is placed in vacuum
2h is dried in freeze drying box, produces modified charing peanut shell powder end；Count in parts by weight, by 20 parts of microfine diatomaceous powders,
20 parts of basalt fibres, 6 parts of nano magnesias, 6 parts of graphite oxide mixing, obtain mixed mineral powder；Count in parts by weight, by 20 parts of glass
Glass fiber, 6 parts of modified charing peanut shell powder ends, 20 parts of animal bloods, 20 parts of animal hair mixing, obtains additive package；By weight
Measure number meter, by 40 parts of pitches, 20 parts of mixed mineral powders and 10 parts of additive packages are placed in crucible, in temperature be 185 DEG C of conditions
Under, stirred to complete and melted with glass bar, produce Stability of Modified Asphalt Mortar.The animal blood is pig blood.The animal hair is
Pig hair.The unsaturated carbonate hydrogen calcium solution is the calcium bicarbonate solution under the conditions of 22 DEG C.
Example 3
Diatomite is placed in ball mill, under the conditions of rotating speed is 500r/min, after ball mill grinding, the sieve of 200 mesh is crossed, must refine
Powder；Will refinement powder and calcium bicarbonate solution in mass ratio 1：100 are placed in No. 1 beaker, in rotating speed be 500r/min conditions
Under, after being stirred 50min, mixed liquor is obtained, then mixed liquor is placed in refrigerator and freezes 2h, frozen materials are obtained, then will
Frozen materials are placed in water-bath, are melted completely under the conditions of being 100 DEG C in temperature, after such Frozen-thawed cycled 7 times, filtering, obtain pre- place
Microfine diatomaceous powder is managed, and pretreatment microfine diatomaceous powder is placed in baking oven and dries 2h, obtains microfine diatomaceous powder；Will
Refine powder and mass concentration 2g/L dopamine solutions in mass ratio 1：100 are placed in No. 2 beakers, in rotating speed be 400r/min bars
Under part, 30min is stirred, after soaking 2h, obtains soak, then soak is filtered, obtains pretreatment microfine diatomaceous powder；Will
It is 30% hydrogen peroxide in mass ratio 1 that microfine diatomaceous powder, which is pre-processed, with mass fraction：100 add in single-necked flask, then will be single
Mouthful flask is placed in digital display and tested the speed in constant temperature blender with magnetic force, is 80 DEG C in temperature, under the conditions of rotating speed is 500r/min, is stirred
30min, after soaking 2h, mixed liquor is obtained, then mixed liquor is filtered, obtained filter residue, then filter residue is washed with deionized 5 times, then
Filter residue after washing is placed in vacuum freezing drying oven and dries 2h, produces modified superfine diatomite powder；By graphite and quality
Fraction is 30% liquor potassic permanganate in mass ratio 1：100 are added in three-necked flask, and three-necked flask then is placed in into digital display and tested the speed
In constant temperature blender with magnetic force, it is 80 DEG C in temperature, under the conditions of rotating speed is 500r/min, is stirred 30min, then with dropper to three
Mouthful flask be added dropwise mass fraction be 10% sulphur acid for adjusting pH to 4.7, then soak 2h, obtain pickle liquor, then filter pickle liquor, obtain
Filter cake, then filter cake is placed in vacuum freezing drying oven and dries 2h, produce graphite oxide；Peanut shell is placed in ball mill, in
Under the conditions of rotating speed is 500r/min, after ball mill grinding, the sieve of 80 mesh is crossed, obtains peanut shell powder；Peanut shell powder is placed in charing
In stove, and nitrogen is passed through into stove with 90mL/min speed, in temperature be 550 DEG C, rotating speed be 200r/min under the conditions of, in nitrogen
Under protective condition, insulation charing 3h, room temperature is down to stove, peanut shell powder must be carbonized；Charing peanut shell powder is pressed with milk
Mass ratio 1：100 are placed in No. 3 beakers, under the conditions of rotating speed is 300r/min, are stirred 50min, obtain mixed slurry, then will
Mixed slurry filters, and must pre-process charing peanut shell powder, and pretreatment charing peanut shell powder then is placed in into vacuum refrigeration does
2h is dried in dry case, charing peanut shell powder must be pre-processed；Count in parts by weight, by 20 parts of modified superfine diatomite powders, 20
Part basalt fibre, 6 parts of nano magnesias, 6 parts of graphite oxides mixing, obtain mixed mineral powder；Count in parts by weight, by 20 parts of glass
Fiber, 6 parts of charing peanut shell powder, 20 parts of animal bloods, 20 parts of animal hair mixing, obtain additive package；In parts by weight
Meter, by 40 parts of pitches, 20 parts of mixed mineral powders and 10 parts of additive packages are placed in crucible, under the conditions of temperature is 185 DEG C, use glass
Glass rod, which is stirred to complete, to be melted, and produces Stability of Modified Asphalt Mortar.The animal blood is pig blood.The animal hair is pig hair.Institute
Unsaturated carbonate hydrogen calcium solution is stated as the calcium bicarbonate solution under the conditions of 22 DEG C.
Comparative example：The asphalt mastic of Shandong Chemical Co., Ltd. production.
The gained of example 1 to 3 asphalt mastic and comparative example product are subjected to performance detection, specific detection method is as follows：
According to GB/T4507, its softening point is tested using the ASTMD36 asphalt softening point determination methods formulated；Use dynamic shearing stream
Become instrument（DSR）Detect its complex shear modulus.Specific testing result is as shown in table 1：
Table 1
| Detection content | Example 1 | Example 1 | Example 1 | Comparative example |
| Softening point/DEG C | 66 | 56 | 54 | 47 |
| Complex shear modulus/KPa | 14 | 10 | 9 | 6 |
From the testing result of table 1, present invention gained Stability of Modified Asphalt Mortar softening point is high, complex shear modulus is big, at high temperature
With good stability.
Claims (6)
- A kind of 1. Stability of Modified Asphalt Mortar, it is characterised in that：It is made up of the raw material of following parts by weight：30~40 parts of pitch10~20 parts of mixed mineral powder8~10 parts of additive packageThe mixed mineral powder is made up of the raw material of following parts by weight：10~20 parts of modified superfine diatomite powders, 10~20 Part basalt fibre, 5~6 parts of nano magnesias, 5~6 parts of graphite oxides；The additive package is made up of the raw material of following parts by weight：10~20 parts of glass fibres, 5~6 portions of charing peanuts Shell powder, 10~20 parts of animal bloods, 10~20 parts of animal hairs；The preparation process of the modified superfine diatomite powder is：（1）By diatomite ball mill grinding, sieving, refinement powder is obtained；（2）By above-mentioned gained refinement powder and unsaturated carbonate hydrogen calcium solution in mass ratio 1：50~1：100 are stirred, and freeze thawing follows Ring, filter, dry, obtain microfine diatomaceous powder；（3）By above-mentioned gained microfine diatomaceous powder and dopamine solution in mass ratio 1：50~1：100 are stirred, immersion, Filtering, obtains pretreatment microfine diatomaceous powder；（4）By above-mentioned gained pretreatment microfine diatomaceous powder and hydrogen peroxide in mass ratio 1：50~1：100 mixing, heating are stirred Mix, soak, filter, wash, dry, produce modified superfine diatomite powder.
- A kind of 2. Stability of Modified Asphalt Mortar according to claim 1, it is characterised in that：The preparation process of the graphite oxide is： By graphite and liquor potassic permanganate in mass ratio 1：50~1：100 mixing, heating stirring, adjust pH, soak, and filter, and dry, i.e., Obtain graphite oxide.
- A kind of 3. Stability of Modified Asphalt Mortar according to claim 1, it is characterised in that：It is described charing peanut shell powder can also be Modified charing peanut shell powder end；The modification carbonizes the last preparation process of peanut shell powder：By peanut shell ball mill grinding, sieve, Obtain peanut shell powder；By peanut shell powder nitrogen charging high temperature carbonization, cool with stove, peanut shell powder must be carbonized；Peanut shell will be carbonized Powder and milk in mass ratio 1：50~1：100 are stirred, and filter, and dry, and must pre-process charing peanut shell powder；It will locate in advance Reason charing peanut shell powder and liquor potassic permanganate in mass ratio 1：50~1：100 mixing, heating stirring, soak, and filter, and do It is dry, produce modified charing peanut shell powder end.
- A kind of 4. Stability of Modified Asphalt Mortar according to claim 1, it is characterised in that：The animal blood is pig blood, duck blood or Any one in chicken blood.
- A kind of 5. Stability of Modified Asphalt Mortar according to claim 1, it is characterised in that：The animal hair is pig hair, wool or Any one in ox hair.
- A kind of 6. Stability of Modified Asphalt Mortar according to claim 1, it is characterised in that：Step（2）The unsaturated carbonate hydrogen calcium is molten Liquid is the calcium bicarbonate solution under the conditions of 20~22 DEG C.
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| CN114262523A (en) * | 2021-12-27 | 2022-04-01 | 苏州科技大学 | Application of aluminum hydroxide-loaded peanut shell powder to asphalt carbon emission reduction |
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