CN108929087A - A kind of anti-crack concrete - Google Patents
A kind of anti-crack concrete Download PDFInfo
- Publication number
- CN108929087A CN108929087A CN201811013615.2A CN201811013615A CN108929087A CN 108929087 A CN108929087 A CN 108929087A CN 201811013615 A CN201811013615 A CN 201811013615A CN 108929087 A CN108929087 A CN 108929087A
- Authority
- CN
- China
- Prior art keywords
- parts
- mass ratio
- reagent
- mixing
- takes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of anti-crack concretes, belong to the field of building materials.The present invention is to bamboo shoots crushing, steam blasting, fermentation process, lignin and hemicellulose generation therein is set to degrade to a certain degree, bamboo shoots fiber hydrolization after degradation, it can effectively be combined with hydroxyapatite newly-generated in system, it further decomposes under alkaline condition, as reinforcement, inside concrete connecting forces are improved；Ardealite is pre-processed, be conducive to internal phosphorus pentoxide exposure, it reacts with ethyl alcohol effect and generates hydroxyapatite, hydrogen bond can be formed and maintain connection between system, further increase system intensity, reinforce stability and intensity effectively, secondary hydration occurs inside stimulation system, the gel structure of a large amount of reticular structures is formed, to keep system internal structure more fine and close, the connecting forces of inside concrete component effectively improve, and reach effect of prestressed well.The present invention solves the problems, such as that current crack-resistant performance of concrete and mechanical property are bad.
Description
Technical field
The present invention relates to the field of building materials, and in particular to a kind of anti-crack concrete.
Background technique
In recent years, as the process of urbanization, Integration of Urban-rural Areas are constantly accelerated, the effect of concrete additive is increasingly
It is important.And it is well known that cement concrete material is current most large one of construction material, in we live, concrete
It is ubiquitous.The either brill at the investigation station and ocean in road, bridge, building, harbour, harbour, dam, airport or the South Pole
Well platform, people can at every moment touch it, and cement concrete material is also used for outer space in research by scientist.
In the prior art, many underground engineerings, especially mass concrete engineering, concrete vulnerable to external environment influence and cause
The extension of concrete microcrack, harmful substance intrusion cause concrete deterioration, reduce concrete durability, influence concrete structures
Service life.
Summary of the invention
The technical problems to be solved by the invention: for current common crack-resistant performance of concrete and mechanical property is bad asks
Topic, provides a kind of anti-crack concrete.
In order to solve the above technical problems, the present invention is using technical solution as described below:
A kind of anti-crack concrete, according to the mass fraction, including following component: 60 ~ 80 parts of ordinary portland cements, 20 ~ 30 parts of quartz sands, 6 ~
10 parts of impervious agents, 4 ~ 8 parts of water-reducing agents, 30 ~ 50 parts of water, further includes: 30 ~ 50 parts of compound cracking resistance ingredient A, 20 ~ 40 parts of compound cracking resistances
Ingredient B.
The preparation method of the compound cracking resistance ingredient A, includes the following steps:
(1) 1:20 ~ 30 take ardealite, dehydrated alcohol mixing in mass ratio, and zirconium oxide ball milling is added by ball 20 ~ 30:1 of material mass ratio
Pearl, ball milling mixing obtain ball milling material, and in 65 ~ 70 DEG C, 20 ~ 30:1 in mass ratio takes ball milling material, reagent A to be mixed, and filtering takes
Adjuvant mixing is added to get pretreated ardealite in filter residue 5:1 in mass ratio ~ 2；
(2) according to the mass fraction, 6 ~ 10 parts of aggregates, 30 ~ 40 parts of pre-treating fly ash, 10 ~ 20 parts of white limes, 40 ~ 60 are successively taken
Part reagent B, pretreated ardealite are mixed, and rotary evaporation is concentrated under reduced pressure, obtains concentrate, take concentrate steam pressure to handle, obtain base
Material takes base-material vinegar stifling to get compound cracking resistance ingredient A.
Reagent A in the step (1): take the concentrated sulfuric acid, sodium citrate mixing to get reagent A 10 ~ 15:3 of mass ratio.
Adjuvant in the step (1): 5:0.1 ~ 0.3 takes microcrystalline wax, the mixing of inclined aluminium kaolin to get auxiliary in mass ratio
Agent.
Pre-treating fly ash in the step (2): in 60 ~ 80 DEG C, 1:6 ~ 20 in mass ratio take flyash, hydrofluoric acid molten
Liquid mixing, ageing, adjust pH value, be added 4 ~ 8 times of flyash quality water mixing, heat preservation, adjust pH value, rotary evaporation to get
Pre-treating fly ash.
Reagent B in the step (2): 8:1 ~ 3 take ethanol solution, sodium bicarbonate mixing to get reagent B in mass ratio.
The preparation of the compound cracking resistance ingredient B: taking bamboo shoots to pulverize and sieve, and takes sieving particle steam blasting, and discharging obtains steam explosion
Material, according to the mass fraction, successively takes 20 ~ 30 parts of steam explosion material, 8 ~ 12 parts of wheat brans, 1 ~ 3 part of biogas slurry, 30 ~ 50 parts of water, in 28 ~ 32 DEG C,
Constant-temperature table oscillation and fermentation, discharging, obtains fermentation material, fermentation material is taken to sterilize, and obtains processed material, the preparing quick lime of 1:3 in mass ratio ~ 6, place
Object, reagent C mixing, closed solarization are managed, discharging is evaporated under reduced pressure to get compound cracking resistance ingredient B.
The reagent C: 10 ~ 15:1 in mass ratio takes PBS buffer solution, ammonium carbonate mixing to get reagent C.
The impervious agent: 4:1 ~ 2:0.01 in mass ratio takes plant ash, SiO2, pearl powder mixing to get permeability-reducing admixture.
The water-reducing agent: any one in TH-928 poly carboxylic acid series water reducer or YZ-1 naphthalene series high-efficiency water-reducing agent.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention makes lignin and hemicellulose therein that certain journey occur bamboo shoots crushing, steam blasting, fermentation process
Degree degradation, generating portion small molecular sugar substance, and mixed fermentations such as a small amount of biogas slurry, so that further degradation occurs for rice hull cellulose
While, ethyl alcohol is converted by the small molecule carbohydrate of generation, on the one hand, the generation of ethyl alcohol can be with the phosphorus pentoxide in ardealite
Reaction generates phosphatide under the conditions of sulphuric acid catalysis, and in subsequent processes, phosphatide occurs slowly to hydrolyze under alkaline system,
Calcium binding in hydrolysate and system, to convert the phosphorus pentoxide in ardealite to, to be conducive to concrete system strong
The calcium hydroxy phosphate of degree makes system intensity effectively improve, and histocompatbility is promoted, on the other hand, after degradation
Bamboo shoots fiber hydrolization, institute's band activity are improved, can effectively be combined with hydroxyapatite newly-generated in system, then mixed with quick lime
After conjunction, further decomposes under alkaline condition, as reinforcement, can further improve inside concrete connecting forces；
(2) present invention pre-processes ardealite, in preprocessing process, part phosphorus pentoxide in ardealite is made to exist first
It is gradually exposed in mechanical milling process, and the dehydrated alcohol generated with fermentation reacts under concentrated sulfuric acid catalyst, generation phosphatide, and
Under the conditions of alkaline system, silica is gradually etched in ardealite, and ardealite is made to be changed into porous structure, is conducive to inside five
It aoxidizes two phosphorus further to expose, reacts with ethyl alcohol effect and generate hydroxyapatite, good biocompatibility, and hydrogen can be formed
Key maintains the connection between system, further increases system intensity, during the preparation process carbonization treatment, and carbon dioxide gas can seep
It penetrates into inside system, so that remaining calcium hydroxide in system is converted into calcium carbonate crystal, and generate moisture, the generation of moisture can be into
One step promotes the hydration process of gypsum to carry out, and further increases system internal mechanical strength, during being fumigated using acetic acid, body
It is pH rapid decrease, is conducive to the abundant carbonization in subsequent carbonisation inside system, under steam press maintenance, can further improve body
The internal effect that is carbonized of system, reinforces stability and intensity of the invention effectively, secondary hydration occurs inside stimulation system, mutually
It is connected, forms the gel structure of a large amount of reticular structures, thus keep system internal structure more fine and close, this inside concrete component
Connecting forces effectively improve, reach effect of prestressed well.
Specific embodiment
Reagent A: the concentrated sulfuric acid of concentration 1.84g/L, sodium citrate is taken to mix to get reagent A 10 ~ 15:3 of mass ratio.
Reagent B: 8:1 ~ 3 take ethanol solution, sodium bicarbonate that volume fraction is 60% to mix to get reagent B in mass ratio.
Reagent C: 10 ~ 15:1 in mass ratio takes the PBS buffer solution that pH is 7.2 ~ 7.8, ammonium carbonate to mix to get reagent C.
Adjuvant: 5:0.1 ~ 0.3 takes microcrystalline wax, the mixing of inclined aluminium kaolin to get adjuvant in mass ratio.
Pre-treating fly ash: in 60 ~ 80 DEG C, in mass ratio 1:6 ~ 20 take flyash, atomization concentration be 47% hydrogen fluorine
Acid solution mixing, is aged 1 ~ 3 day, and after being 12 ~ 13 with the NaOH solution adjusting pH value of concentration 0.1mol/L, flyash quality is added
4 ~ 8 times of water mixing, keeps the temperature 1 ~ 3h, and being passed through carbon dioxide adjustment pH value is 7.1 ~ 8.2, in 80 ~ 90 DEG C of rotary evaporations to constant weight,
Up to pre-treating fly ash.
Water-reducing agent: any one in TH-928 poly carboxylic acid series water reducer or YZ-1 naphthalene series high-efficiency water-reducing agent.
Permeability-reducing admixture: 4:1 ~ 2:0.01 in mass ratio takes plant ash, SiO2, pearl powder mixing to get permeability-reducing admixture.
The preparation method of compound cracking resistance ingredient A, includes the following steps:
(1) 1:20 ~ 30 take ardealite, dehydrated alcohol to mix in ball grinder in mass ratio, and oxygen is added by ball 20 ~ 30:1 of material mass ratio
Change zirconium ball milling pearl and ball milling material is obtained with 300 ~ 500r/min, 1 ~ 3h of ball milling mixing, in 65 ~ 70 DEG C, 20 ~ 30:1 takes ball in mass ratio
Abrasive material, reagent A are mixed in reaction kettle, stir 1 ~ 3h with 400 ~ 600r/min, filtering takes filter residue 5:1 in mass ratio ~ 2 to be added auxiliary
Agent is uniformly mixed to get pretreated ardealite；
(2) according to the mass fraction, 6 ~ 10 parts of aggregates, 30 ~ 40 parts of pre-treating fly ash, 10 ~ 20 parts of white limes, 40 ~ 60 are successively taken
Part reagent B, pretreated ardealite are mixed in reaction kettle, after 500 ~ 800r/min magnetic agitation, 35 ~ 60min, are revolved in 65 ~ 90 DEG C
Turn evaporation, is concentrated under reduced pressure into the 35 ~ 50% of original volume, obtains concentrate, take concentrate in still kettle, under the conditions of 175 ~ 185 DEG C,
Steam pressure handles 3 ~ 6h, obtains base-material, and base-material vinegar is taken to fumigate 6 ~ 10h persistently to get compound cracking resistance ingredient A.
The preparation of compound cracking resistance ingredient B: taking bamboo shoots to crushed 80 meshes in pulverizer, takes sieving particle in steam-explosion jar,
Steam blasting is carried out under conditions of 300 ~ 350 DEG C, 20 ~ 30:1 of water material mass ratio, 2.8 ~ 3.6MPa of pressure, discharges, obtains steam explosion
Material successively takes 20 ~ 30 parts of steam explosion material, 8 ~ 12 parts of wheat brans, 1 ~ 3 part of biogas slurry, 30 ~ 50 parts of water according to the mass fraction, and fermentor is added
In, in 28 ~ 32 DEG C, under the conditions of revolving speed is 300 ~ 400r/min, constant-temperature table oscillation and fermentation 2 ~ 4 days, discharging obtained fermentation material, takes
Fermentation material sterilizes 15 ~ 25min at 121 ~ 130 DEG C, obtains processed material, the preparing quick lime of 1:3 in mass ratio ~ 6, processed material, reagent C in
The mixing of transparent glass tank, closed solarization 4 ~ 8 days, discharging are evaporated under reduced pressure to constant weight in 60 ~ 80 DEG C to get compound cracking resistance ingredient B.
A kind of anti-crack concrete, according to the mass fraction, including following component: 60 ~ 80 parts of ordinary portland cements, 20 ~ 30 parts of quartz
Sand, 6 ~ 10 parts of impervious agents, 4 ~ 8 parts of water-reducing agents, 30 ~ 50 parts of water, 30 ~ 50 parts of compound cracking resistance ingredient A, 20 ~ 40 parts of compound cracking resistances at
Divide B.
A kind of preparation method of anti-crack concrete, includes the following steps:
(1) according to the mass fraction, take 60 ~ 80 parts of ordinary portland cements, 20 ~ 30 parts of quartz sands, 6 ~ 10 parts of impervious agents, 4 ~ 8 parts of water-reducing agents,
30 ~ 50 parts of water, 30 ~ 50 parts of compound cracking resistance ingredient A, 20 ~ 40 parts of compound cracking resistance ingredient B；
(2) in 30 ~ 45 DEG C, ordinary portland cement, quartz sand, water, compound cracking resistance ingredient A is taken to mix in reaction kettle, first with 600 ~ 800r/
After min stirs 30 ~ 50min, compound cracking resistance ingredient B, impervious agent, water-reducing agent mixing is added, obtains mixed slurry, mixed mortar is infused
Enter mold and be transferred to precuring room, in 35 ~ 45 DEG C, precuring is quiet stop 2 ~ 4h after, demoulding, obtain coagulation sun-dried mud brick, carbonization case then moved to, in dioxy
Under the conditions of change concentration of carbon 20%, 35 ~ 40 DEG C of temperature, relative humidity are 50 ~ 60%, constant temperature and humidity 2 ~ 4h of carbonization obtains carbonated concrete
Base, then gained carbonated concrete base is moved into still kettle, it is that 13 ~ 15atm is kept the temperature under the conditions of temperature is 170 ~ 190 DEG C in pressure
After pressure maintaining conserves 12 ~ 16h, room temperature natural curing 5 ~ 8 days to get anti-crack concrete.
Reagent A: the concentrated sulfuric acid of concentration 1.84g/L, sodium citrate is taken to mix to get reagent A mass ratio 10:3.
Reagent B: 8:1 in mass ratio takes the ethanol solution that volume fraction is 60%, sodium bicarbonate to mix to get reagent B.
Reagent C: 10:1 in mass ratio takes the PBS buffer solution that pH is 7.2, ammonium carbonate to mix to get reagent C.
Adjuvant: 5:0.1 in mass ratio takes microcrystalline wax, the mixing of inclined aluminium kaolin to get adjuvant.
Pre-treating fly ash: in 60 DEG C, 1:6 in mass ratio takes flyash, the concentration of atomization is 47% hydrofluoric acid solution
Mixing is aged 1 day, and after being 12 with the NaOH solution adjusting pH value of concentration 0.1mol/L, it is mixed that 4 times of flyash quality of water is added
It closes, keeps the temperature 1h, being passed through carbon dioxide adjustment pH value is 7.1, in 80 DEG C of rotary evaporations to constant weight to get pre-treating fly ash.
Water-reducing agent: TH-928 poly carboxylic acid series water reducer.
Permeability-reducing admixture: 4:1:0.01 in mass ratio takes plant ash, SiO2, pearl powder mixing to get permeability-reducing admixture.
The preparation method of compound cracking resistance ingredient A, includes the following steps:
(1) 1:20 in mass ratio takes ardealite, dehydrated alcohol to mix in ball grinder, and zirconia ball is added by ball material mass ratio 20:1
It grinds pearl and ball milling material is obtained with 300r/min ball milling mixing 1h, in 65 DEG C, 20:1 in mass ratio takes ball milling material, reagent A in reaction kettle
Mixing stirs 1h with 400r/min, and filtering takes filter residue 5:1 in mass ratio that adjuvant is added and is uniformly mixed to get pretreatment phosphorus stone
Cream；
(2) according to the mass fraction, 6 parts of aggregates, 30 parts of pre-treating fly ash, 10 parts of white limes, 40 parts of reagent B, pre- place are successively taken
It manages ardealite to mix in reaction kettle, after 500r/min magnetic agitation 35min, in 65 DEG C of rotary evaporations, is concentrated under reduced pressure into substance
Long-pending 35%, obtains concentrate, takes concentrate in still kettle, and under the conditions of 175 DEG C, steam pressure handles 3h, obtains base-material, and base-material is taken to eat
Vinegar fumigates 6h persistently to get compound cracking resistance ingredient A.
The preparation of compound cracking resistance ingredient B: taking bamboo shoots to crushed 80 meshes in pulverizer, takes sieving particle in steam-explosion jar,
Steam blasting is carried out under conditions of 300 DEG C, water material mass ratio 20:1, pressure 2.8MPa, discharges, steam explosion material is obtained, by mass parts
Number meter, successively takes 20 parts of steam explosion material, 8 parts of wheat brans, 1 part of biogas slurry, 30 parts of water, is added in fermentor, in 28 DEG C, revolving speed 300r/
Under the conditions of min, constant-temperature table oscillation and fermentation 2 days, discharging obtained fermentation material, takes fermentation material to sterilize at 121 DEG C 15min, must handle
Object, in mass ratio 1:3 preparing quick lime, processed material, reagent C are mixed in transparent glass tank, closed solarization 4 days, and discharging subtracts in 60 DEG C
Pressure is evaporated to constant weight to get compound cracking resistance ingredient B.
A kind of anti-crack concrete, according to the mass fraction, including following component: 60 parts of ordinary portland cements, 20 parts of quartz sands, 6 parts
Impervious agent, 4 parts of water-reducing agents, 30 parts of water, 30 parts of compound cracking resistance ingredient A, 20 parts of compound cracking resistance ingredient B.
A kind of preparation method of anti-crack concrete, includes the following steps:
(1) according to the mass fraction, 60 parts of ordinary portland cements, 20 parts of quartz sands, 6 parts of impervious agents, 4 parts of water-reducing agents, 30 parts of water, 30 parts are taken
Compound cracking resistance ingredient A, 20 parts of compound cracking resistance ingredient B；
(2) it in 30 DEG C, first takes ordinary portland cement, quartz sand, water, compound cracking resistance ingredient A to mix in reaction kettle, is stirred with 600r/min
After 30min, compound cracking resistance ingredient B, impervious agent, water-reducing agent mixing is added, obtains mixed slurry, mixed mortar injection mold is transferred to
Precuring room, in 35 DEG C, precuring is quiet stop 2h after, demoulding, obtain coagulation sun-dried mud brick, then move to carbonization case, in gas concentration lwevel 20%, temperature
Under the conditions of 35 DEG C of degree, relative humidity are 50%, constant temperature and humidity is carbonized 2h, obtains carbonated concrete base, then by gained carbonated concrete base
Move into still kettle, in pressure be 13atm, temperature be 170 DEG C under the conditions of, heat-insulation pressure keeping conserve 12h after, room temperature natural curing 5 days,
Up to anti-crack concrete.
Reagent A: the concentrated sulfuric acid of concentration 1.84g/L, sodium citrate is taken to mix to get reagent A mass ratio 15:3.
Reagent B: 8:3 in mass ratio takes the ethanol solution that volume fraction is 60%, sodium bicarbonate to mix to get reagent B.
Reagent C: 15:1 in mass ratio takes the PBS buffer solution that pH is 7.8, ammonium carbonate to mix to get reagent C.
Adjuvant: 5:0.3 in mass ratio takes microcrystalline wax, the mixing of inclined aluminium kaolin to get adjuvant.
Pre-treating fly ash: in 80 DEG C, 1:20 in mass ratio takes flyash, the concentration of atomization is 47% hydrofluoric acid solution
Mixing is aged 3 days, and after being 13 with the NaOH solution adjusting pH value of concentration 0.1mol/L, it is mixed that 8 times of flyash quality of water is added
It closes, keeps the temperature 3h, being passed through carbon dioxide adjustment pH value is 8.2, in 90 DEG C of rotary evaporations to constant weight to get pre-treating fly ash.
Water-reducing agent: YZ-1 naphthalene series high-efficiency water-reducing agent.
Permeability-reducing admixture: 4:2:0.01 in mass ratio takes plant ash, SiO2, pearl powder mixing to get permeability-reducing admixture.
The preparation method of compound cracking resistance ingredient A, includes the following steps:
(1) 1:30 in mass ratio takes ardealite, dehydrated alcohol to mix in ball grinder, and zirconia ball is added by ball material mass ratio 30:1
It grinds pearl and ball milling material is obtained with 500r/min ball milling mixing 3h, in 70 DEG C, 30:1 in mass ratio takes ball milling material, reagent A in reaction kettle
Mixing stirs 3h with 600r/min, and filtering takes filter residue 5:2 in mass ratio that adjuvant is added and is uniformly mixed to get pretreatment phosphorus stone
Cream；
(2) according to the mass fraction, 10 parts of aggregates, 40 parts of pre-treating fly ash, 20 parts of white limes, 60 parts of reagent B, pre- place are successively taken
It manages ardealite to mix in reaction kettle, after 800r/min magnetic agitation 60min, in 90 DEG C of rotary evaporations, is concentrated under reduced pressure into substance
Long-pending 50%, obtains concentrate, takes concentrate in still kettle, and under the conditions of 185 DEG C, steam pressure handles 6h, obtains base-material, and base-material is taken to eat
Vinegar fumigates 10h persistently to get compound cracking resistance ingredient A.
The preparation of compound cracking resistance ingredient B: taking bamboo shoots to crushed 80 meshes in pulverizer, takes sieving particle in steam-explosion jar,
Steam blasting is carried out under conditions of 350 DEG C, water material mass ratio 30:1, pressure 3.6MPa, discharges, steam explosion material is obtained, by mass parts
Number meter, successively takes 30 parts of steam explosion material, 12 parts of wheat brans, 3 parts of biogas slurries, 50 parts of water, is added in fermentor, in 32 DEG C, revolving speed 400r/
Under the conditions of min, constant-temperature table oscillation and fermentation 4 days, discharging obtained fermentation material, takes fermentation material to sterilize at 130 DEG C 25min, must handle
Object, in mass ratio 1:6 preparing quick lime, processed material, reagent C are mixed in transparent glass tank, closed solarization 8 days, and discharging subtracts in 80 DEG C
Pressure is evaporated to constant weight to get compound cracking resistance ingredient B.
A kind of anti-crack concrete, according to the mass fraction, including following component: 80 parts of ordinary portland cements, 30 parts of quartz sands, 10 parts
Impervious agent, 8 parts of water-reducing agents, 50 parts of water, 50 parts of compound cracking resistance ingredient A, 40 parts of compound cracking resistance ingredient B.
A kind of preparation method of anti-crack concrete, includes the following steps:
(1) according to the mass fraction, 80 parts of ordinary portland cements, 30 parts of quartz sands, 10 parts of impervious agents, 8 parts of water-reducing agents, 50 parts of water, 50 are taken
The compound cracking resistance ingredient A of part, 40 parts of compound cracking resistance ingredient B；
(2) it in 45 DEG C, first takes ordinary portland cement, quartz sand, water, compound cracking resistance ingredient A to mix in reaction kettle, is stirred with 800r/min
After 50min, compound cracking resistance ingredient B, impervious agent, water-reducing agent mixing is added, obtains mixed slurry, mixed mortar injection mold is transferred to
Precuring room, in 45 DEG C, precuring is quiet stop 4h after, demoulding, obtain coagulation sun-dried mud brick, then move to carbonization case, in gas concentration lwevel 20%, temperature
Under the conditions of 40 DEG C of degree, relative humidity are 60%, constant temperature and humidity is carbonized 4h, obtains carbonated concrete base, then by gained carbonated concrete base
Move into still kettle, in pressure be 15atm, temperature be 190 DEG C under the conditions of, heat-insulation pressure keeping conserve 16h after, room temperature natural curing 8 days,
Up to anti-crack concrete.
Reagent A: the concentrated sulfuric acid of concentration 1.84g/L, sodium citrate is taken to mix to get reagent A mass ratio 13:3.
Reagent B: 8:1.5 in mass ratio takes the ethanol solution that volume fraction is 60%, sodium bicarbonate to mix to get reagent B.
Reagent C: 12:1 in mass ratio takes the PBS buffer solution that pH is 7.5, ammonium carbonate to mix to get reagent C.
Adjuvant: 5:0.2 in mass ratio takes microcrystalline wax, the mixing of inclined aluminium kaolin to get adjuvant.
Pre-treating fly ash: in 70 DEG C, 1:12 in mass ratio takes flyash, the concentration of atomization is 47% hydrofluoric acid solution
Mixing is aged 2 days, and after being 12.5 with the NaOH solution adjusting pH value of concentration 0.1mol/L, it is mixed that 6 times of flyash quality of water is added
It closes, keeps the temperature 2h, being passed through carbon dioxide adjustment pH value is 7.5, in 85 DEG C of rotary evaporations to constant weight to get pre-treating fly ash.
Water-reducing agent: TH-928 poly carboxylic acid series water reducer.
Permeability-reducing admixture: 4:1.5:0.01 in mass ratio takes plant ash, SiO2, pearl powder mixing to get permeability-reducing admixture.
The preparation method of compound cracking resistance ingredient A, includes the following steps:
(1) 1:25 in mass ratio takes ardealite, dehydrated alcohol to mix in ball grinder, and zirconia ball is added by ball material mass ratio 25:1
It grinds pearl and ball milling material is obtained with 400r/min ball milling mixing 2h, in 67 DEG C, 25:1 in mass ratio takes ball milling material, reagent A in reaction kettle
Mixing stirs 2h with 500r/min, and filtering takes filter residue 5:1.5 in mass ratio that adjuvant is added and is uniformly mixed to get pretreatment phosphorus stone
Cream；
(2) according to the mass fraction, 8 parts of aggregates, 35 parts of pre-treating fly ash, 15 parts of white limes, 50 parts of reagent B, pre- place are successively taken
It manages ardealite to mix in reaction kettle, after 600r/min magnetic agitation 50min, in 70 DEG C of rotary evaporations, is concentrated under reduced pressure into substance
Long-pending 40%, obtains concentrate, takes concentrate in still kettle, and under the conditions of 180 DEG C, steam pressure handles 5h, obtains base-material, and base-material is taken to eat
Vinegar fumigates 7h persistently to get compound cracking resistance ingredient A.
The preparation of compound cracking resistance ingredient B: taking bamboo shoots to crushed 80 meshes in pulverizer, takes sieving particle in steam-explosion jar,
Steam blasting is carried out under conditions of 330 DEG C, water material mass ratio 25:1, pressure 2.9MPa, discharges, steam explosion material is obtained, by mass parts
Number meter, successively takes 25 parts of steam explosion material, 11 parts of wheat brans, 2 parts of biogas slurries, 35 parts of water, is added in fermentor, in 30 DEG C, revolving speed 350r/
Under the conditions of min, constant-temperature table oscillation and fermentation 3 days, discharging obtained fermentation material, takes fermentation material to sterilize at 127 DEG C 20min, must handle
Object, in mass ratio 1:5 preparing quick lime, processed material, reagent C are mixed in transparent glass tank, closed solarization 6 days, and discharging subtracts in 70 DEG C
Pressure is evaporated to constant weight to get compound cracking resistance ingredient B.
A kind of anti-crack concrete, according to the mass fraction, including following component: 70 parts of ordinary portland cements, 25 parts of quartz sands, 8 parts
Impervious agent, 6 parts of water-reducing agents, 40 parts of water, 40 parts of compound cracking resistance ingredient A, 30 parts of compound cracking resistance ingredient B.
A kind of preparation method of anti-crack concrete, includes the following steps:
(1) according to the mass fraction, 70 parts of ordinary portland cements, 25 parts of quartz sands, 8 parts of impervious agents, 6 parts of water-reducing agents, 40 parts of water, 40 parts are taken
Compound cracking resistance ingredient A, 30 parts of compound cracking resistance ingredient B；
(2) it in 40 DEG C, first takes ordinary portland cement, quartz sand, water, compound cracking resistance ingredient A to mix in reaction kettle, is stirred with 700r/min
After 40min, compound cracking resistance ingredient B, impervious agent, water-reducing agent mixing is added, obtains mixed slurry, mixed mortar injection mold is transferred to
Precuring room, in 40 DEG C, precuring is quiet stop 3h after, demoulding, obtain coagulation sun-dried mud brick, then move to carbonization case, in gas concentration lwevel 20%, temperature
Under the conditions of 37 DEG C of degree, relative humidity are 55%, constant temperature and humidity is carbonized 3h, obtains carbonated concrete base, then by gained carbonated concrete base
Move into still kettle, in pressure be 14atm, temperature be 180 DEG C under the conditions of, heat-insulation pressure keeping conserve 14h after, room temperature natural curing 7 days,
Up to anti-crack concrete.
Comparative example 1: it is essentially identical with the preparation method of embodiment 2, it has only the difference is that lacking compound cracking resistance ingredient A.
Comparative example 2: it is essentially identical with the preparation method of embodiment 2, it has only the difference is that lacking compound cracking resistance ingredient B.
Comparative example 3: the concrete of Qingdao company production.
Crack resistance test: anti-crack concrete made from Example 1-3, comparative example 1-3 is as test sample, maintenance 28
After it, its compression strength is tested, whether every group of sample surfaces of tensile splitting strength and observation have crack generation, and record crack
Length.Test sample is 150mm × 150mm × 150mm cube standard sample.Compression strength and splitting-tensile strength are pressed
It is tested according to GB/T50081-2002 " normal concrete mechanical test method ".Concrete outcome is as shown in table 1.
Table 1:
In summary, concrete effect of the invention is more preferable, is worth of widely use.
Claims (10)
1. a kind of anti-crack concrete, according to the mass fraction, including following component: 60 ~ 80 parts of ordinary portland cements, 20 ~ 30 parts of quartz sands,
6 ~ 10 parts of impervious agents, 4 ~ 8 parts of water-reducing agents, 30 ~ 50 parts of water, which is characterized in that further include: 30 ~ 50 parts of compound cracking resistance ingredient A, 20 ~
40 parts of compound cracking resistance ingredient B.
2. a kind of anti-crack concrete according to claim 1, which is characterized in that the preparation method of the compound cracking resistance ingredient A,
Include the following steps:
(1) 1:20 ~ 30 take ardealite, dehydrated alcohol mixing in mass ratio, and zirconium oxide ball milling is added by ball 20 ~ 30:1 of material mass ratio
Pearl, ball milling mixing obtain ball milling material, and in 65 ~ 70 DEG C, 20 ~ 30:1 in mass ratio takes ball milling material, reagent A to be mixed, and filtering takes
Adjuvant mixing is added to get pretreated ardealite in filter residue 5:1 in mass ratio ~ 2；
(2) according to the mass fraction, 6 ~ 10 parts of aggregates, 30 ~ 40 parts of pre-treating fly ash, 10 ~ 20 parts of white limes, 40 ~ 60 are successively taken
Part reagent B, pretreated ardealite are mixed, and rotary evaporation is concentrated under reduced pressure, obtains concentrate, take concentrate steam pressure to handle, obtain base
Material takes base-material vinegar stifling to get compound cracking resistance ingredient A.
3. a kind of anti-crack concrete according to claim 2, which is characterized in that the reagent A in the step (1): quality
Take the concentrated sulfuric acid, sodium citrate mixing to get reagent A than 10 ~ 15:3.
4. a kind of anti-crack concrete according to claim 2, which is characterized in that the adjuvant in the step (1): in mass ratio
5:0.1 ~ 0.3 takes microcrystalline wax, the mixing of inclined aluminium kaolin to get adjuvant.
5. a kind of anti-crack concrete according to claim 2, which is characterized in that the pre-treating fly ash in the step (2):
In 60 ~ 80 DEG C, 1:6 ~ 20 take flyash, hydrofluoric acid solution mixing in mass ratio, and ageing adjusts pH value, flyash quality 4 is added
~ 8 times of water mixing, heat preservation adjust pH value, and rotary evaporation is to get pre-treating fly ash.
6. a kind of anti-crack concrete according to claim 2, which is characterized in that the reagent B in the step (2): pressing quality
Take ethanol solution, sodium bicarbonate mixing to get reagent B than 8:1 ~ 3.
7. a kind of anti-crack concrete according to claim 1, which is characterized in that the preparation of the compound cracking resistance ingredient B: take bamboo
Bamboo shoot pulverize and sieve, take sieving particle steam blasting, discharging, obtain steam explosion material, according to the mass fraction, successively take 20 ~ 30 parts of steam explosion material,
8 ~ 12 parts of wheat brans, 1 ~ 3 part of biogas slurry, 30 ~ 50 parts of water, in 28 ~ 32 DEG C, constant-temperature table oscillation and fermentation, discharging obtains fermentation material, takes hair
The sterilizing of ferment material obtains processed material, the preparing quick lime of 1:3 in mass ratio ~ 6, processed material, reagent C mixing, closed solarization, discharging, decompression steaming
Hair is to get compound cracking resistance ingredient B.
8. a kind of anti-crack concrete according to claim 7, which is characterized in that the reagent C: 10 ~ 15:1 takes in mass ratio
PBS buffer solution, ammonium carbonate mixing are to get reagent C.
9. a kind of anti-crack concrete according to claim 1, which is characterized in that the impervious agent: 4:1 ~ 2 in mass ratio:
0.01 takes plant ash, SiO2, pearl powder mixing to get permeability-reducing admixture.
10. a kind of anti-crack concrete according to claim 1, which is characterized in that the water-reducing agent: TH-928 polycarboxylic-acid subtracts
Any one in aqua or YZ-1 naphthalene series high-efficiency water-reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811013615.2A CN108929087A (en) | 2018-08-31 | 2018-08-31 | A kind of anti-crack concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811013615.2A CN108929087A (en) | 2018-08-31 | 2018-08-31 | A kind of anti-crack concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108929087A true CN108929087A (en) | 2018-12-04 |
Family
ID=64443180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811013615.2A Pending CN108929087A (en) | 2018-08-31 | 2018-08-31 | A kind of anti-crack concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108929087A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62226845A (en) * | 1986-03-27 | 1987-10-05 | 大成建設株式会社 | Carbon fiber composite hydraulic prepreg material |
| CN101143718A (en) * | 2007-08-30 | 2008-03-19 | 天津大学 | Method for preparing crystallinity controllable nano hydroxyapatite powder |
| CN101234874A (en) * | 2008-02-26 | 2008-08-06 | 武汉理工大学 | Cement-base rigidity water-proofing material and preparing method thereof |
| CN107601964A (en) * | 2017-10-19 | 2018-01-19 | 周夕和 | A kind of preparation method of ceramic gypsum mold |
| CN107602045A (en) * | 2017-10-19 | 2018-01-19 | 仇颖莹 | A kind of preparation method of high-intensity fiber plasterboard |
-
2018
- 2018-08-31 CN CN201811013615.2A patent/CN108929087A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62226845A (en) * | 1986-03-27 | 1987-10-05 | 大成建設株式会社 | Carbon fiber composite hydraulic prepreg material |
| CN101143718A (en) * | 2007-08-30 | 2008-03-19 | 天津大学 | Method for preparing crystallinity controllable nano hydroxyapatite powder |
| CN101234874A (en) * | 2008-02-26 | 2008-08-06 | 武汉理工大学 | Cement-base rigidity water-proofing material and preparing method thereof |
| CN107601964A (en) * | 2017-10-19 | 2018-01-19 | 周夕和 | A kind of preparation method of ceramic gypsum mold |
| CN107602045A (en) * | 2017-10-19 | 2018-01-19 | 仇颖莹 | A kind of preparation method of high-intensity fiber plasterboard |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105541384B (en) | A kind of ultralight foam concrete and preparation method thereof | |
| Handayani et al. | Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement | |
| CN111018383B (en) | Preparation method of chitosan reinforced carbonized hardened body | |
| CN113956070A (en) | Cement kiln tail gas carbonization autoclaved-free aerated concrete wall product and preparation method thereof | |
| CN113956000B (en) | Cement kiln tail gas carbonization building prefabricated product and preparation method thereof | |
| CN111747672B (en) | Superfine modified phosphorus slag powder and superfine composite admixture for concrete | |
| CN110282925A (en) | Artificial porous aggregate of carbonized steel slag and preparation method thereof | |
| CN108996939B (en) | Prehydrated mineral powder nanocrystal core early strength agent for steam-cured concrete and preparation method thereof | |
| CN112694279B (en) | Lightweight aggregate with core-shell structure and preparation method thereof | |
| CN109734369A (en) | A kind of foam air-entrained concrete building block and preparation method thereof prepared using iron tailings as raw material normal temperature and pressure | |
| CN113292265A (en) | Light aggregate based on surface modification, preparation method thereof and light concrete | |
| CN114349401B (en) | High-performance concrete and preparation method thereof | |
| CN109020386A (en) | A kind of cement fibrolite plate | |
| CN111410508A (en) | Preparation method and application of building product based on power plant solid waste and carbon dioxide | |
| CN110467393A (en) | 120MPa superelevation strength silicate haydite concrete tubular pole matrix and preparation method thereof | |
| CN115286286A (en) | Efficient water reducing agent for concrete and preparation method thereof | |
| CN113636767A (en) | Low-carbon cement and preparation method thereof | |
| CN107721287B (en) | A kind of diatomite modified concrete and preparation method thereof | |
| CN109400029A (en) | A method of cement pipe pile is processed using carbon fiber and regeneration concrete | |
| CN106747580A (en) | A kind of autoclave aerated concrete building block for adding rice hull ash and preparation method thereof | |
| CN113024182A (en) | High-toughness high-cohesiveness C80-strength fiber concrete and preparation method thereof | |
| CN108929087A (en) | A kind of anti-crack concrete | |
| CN116553895A (en) | Magnesium slag carbon-fixing gelling material and preparation method thereof | |
| CN111362600A (en) | Preparation method of regenerated set cement | |
| Athira et al. | Carbonation of air lime mortars under natural and accelerated conditions–A systematic review |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181204 |