CN110156380A - It is a kind of intensively to match asphalt and preparation method using prepared by modified steel scoria - Google Patents
It is a kind of intensively to match asphalt and preparation method using prepared by modified steel scoria Download PDFInfo
- Publication number
- CN110156380A CN110156380A CN201910361150.8A CN201910361150A CN110156380A CN 110156380 A CN110156380 A CN 110156380A CN 201910361150 A CN201910361150 A CN 201910361150A CN 110156380 A CN110156380 A CN 110156380A
- Authority
- CN
- China
- Prior art keywords
- steel slag
- acrylic acid
- parts
- asphalt
- water soluble
- 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.)
- Granted
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
- 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
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1074—Silicates, e.g. glass
-
- 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
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Road Paving Structures (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Intensively match asphalt and preparation method using prepared by modified steel scoria the invention discloses a kind of, the composition material of the asphalt are as follows: water soluble acrylic acid material modification steel slag, basalt aggregate, miberal powder and modified pitch, wherein water soluble acrylic acid material modification steel slag is the steel slag that surface is covered with water soluble acrylic acid material, and water soluble acrylic acid material includes organosiloxane, compound emulsifying agent, silane coupling agent, initiator, auxiliary agent, filler, ammonium hydroxide, sodium bicarbonate, dehydrated alcohol and the distilled water of esters of acrylic acid, the group containing end-vinyl.The asphalt the preparation method comprises the following steps: successively being sieved, being cleaned and modification to steel slag first, then carry out aggregate grading design and prepare modified steel scoria asphalt.Asphalt provided by the invention has good high-temperature stability, low-temperature cracking-resistance and water stability, while reducing asphalt content, has saved production cost, is conducive to discarded extensive utilization of the steel slag in road engineering.
Description
Technical field
Intensively match asphalt and preparation method using prepared by modified steel scoria the present invention relates to a kind of, belongs to road work
Journey field of material technology.
Background technique
China's transport development in recent years is in Rapid development stage, and wherein highway is as in communications and transportation integrated system
The daily trip of important component, development and people with national economy is closely bound up.According to statistics, in the past few years, entirely
State's total mileage of highway and national highway density all show the trend gradually increased, and by year ends 2017, national highway is open to traffic always
Mileage reaches 477.35 ten thousand kilometers, and national highway density is 49.72 kilometers/hundred square kilometres.Although highway in China construction obtains
Nowadays huge achievement, but it is also faced with a series of problem and test, one of critical issue is exactly natural high-quality stone
The worsening shortages of material.
Quickly large-scale road construction brings great pressure to the supply of raw material, on the one hand leads to natural high-quality collection
The phenomenon that material lacks, is increasingly severe, on the other hand causes a large amount of massif structure by exhaustive exploitation, destroys natural ecological environment.
In order to alleviate it is natural it is high-quality gather materials as supply pressure caused by pavement material, what research was more popular at present is secondary resource
Resource utilization is steel industry waste steel slag than the more typical material that represents.During steel industry, the yield of steel slag
The 10%~20% of crude steel yield is about accounted for, in recent years with the increase of China's Steel demand amount, steel slag yield is growing day by day,
Steel slag annual output in China's is more than 100,000,000 tons at present, but the comprehensive utilization ratio of steel slag only has 20% or so, a large amount of steel slag accumulation
Such as mountain, a large amount of soil is not only occupied, also causes a degree of environment and soil pollution by heavy metal, causes the secondary money in China
The significant wastage in source.
In order to improve the comprehensive utilization ratio of steel slag, it is a kind of relatively effective approach that steel slag, which is applied to road engineering, at present
One of, the research in relation to this respect is more, such as by Steel-slag for it is natural it is high-quality gather materials be applied to bituminous concrete and cement mixes
Solidifying soil, or replace cement to be used as cementitious material with steel-making slag powder.Steel slag has its unique as a kind of ideal road alternative materials
Advantage, industrial steel slag generally in alkalinity, stick, furthermore steel slag is coarse more so that with faintly acid pitch chemistry occurs for steel slag
The physics that the surface topography in hole also contributes between steel slag and pitch sticks, therefore steel slag and pitch have good Adhesion property.
Pitch binder is wrapped in steel slag surface, the aquation volume expansion of the oxide of free state in steel slag can be prevented, in certain journey
The water stability of bituminous concrete is improved on degree.Furthermore steel slag corner angle are preferable, the characteristics such as high, wear-resisting with intensity, by steel slag
It is applied in bituminous pavement, mixture has good pavement performance, not only antiskid but also wear-resisting, can improve the resistance to of bituminous pavement
Long property and safety.Thus steel slag is considered as a kind of highly beneficial road construction material with value, one side bituminous concrete
In addition to comprising binder pitch and a small amount of inorganic or organic additive, remaining all mineral building stones, the high yield of steel slag is just
Road construction has been catered to the very big demand gathered materials.Secondly, steel slag is applied to asphalt as a kind of trade waste,
While steel slag gets utilization, the cost of raw material also obtains a degree of reduction；On the other hand steel slag is improved to exist
Utilization rate in road engineering it is possible to prevente effectively from natural stone exhaustive exploitation, be conducive to the protection of ecological natural environment, push away
The sustainable development of dynamic road project.
Utilization rate of the steel slag in bituminous pavement is always relatively low, is primarily due to steel slag and contains a certain amount of free state oxygen
Change calcium and magnesia, meets water hydratable and volume expansion occurs, the random cracking of bituminous pavement is caused in the later period, therefore Moisture Damage is
The Major Diseases problem of steel slag asphalt mixture, and limitation steel slag is where the road engineering large-scale application the problem of.In order to
The water stability for improving steel slag asphalt concrete, before steel slag is applied to asphalt, it is necessary to be carried out to it appropriate
Pretreatment, current main pretreatment mode includes that ripening, steam pressure processing, steam treatment and carbonating are handled, at ageing
The reason period is long, and low efficiency, far below the production efficiency of steel slag, other processing modes are complicated for operation and processing cost is higher, limitation
The extensive utilization of steel slag.Furthermore also someone is surface-treated steel slag using organic siliconresin, but its brittleness is larger,
And need just be fully cured under the high temperature conditions to dilute it with toxic solvents, it is inconvenient.
Summary of the invention
Technical problem: for the above problem existing for current asphalt, the present invention, which provides, a kind of uses modified steel scoria
Asphalt and preparation method are intensively matched in preparation, by using the common converter by the processing of water soluble acrylic acid material modification
Steel-slag prepares asphalt for natural coarse aggregate, this method of modifying forms dense hydrophobic membrane on steel slag surface, and can be with drip
Blueness interaction, enhances the cohesive force between steel slag and pitch, and it is existing during engineer application to solve steel slag asphalt mixture
Volume instability problem, improves the utilization rate of industrial waste steel dreg, while reducing the production cost of asphalt, avoids to natural
The exhaustive exploitation of building stones, and the preparation method of intensive allocation modifier steel slag asphalt mixture, the steel slag as made from this method are provided
Asphalt has good low-temperature cracking-resistance, high-temperature stability and water stability.
Technical solution: intensively match asphalt using prepared by modified steel scoria the present invention provides a kind of, this is intensively matched
Asphalt includes following components according to mass parts:
4~5 parts of modified pitch；
25~50 parts of basalt aggregate；
55~70 parts of water soluble acrylic acid material modification steel slag；
4~7 parts of miberal powder；
Water soluble acrylic acid material modification steel slag is the steel slag that surface is covered with water soluble acrylic acid material, water soluble acrylic acid material
Including esters of acrylic acid, containing end-vinyl group organosiloxane, compound emulsifying agent, silane coupling agent, initiator, auxiliary agent, fill out
Material, ammonium hydroxide, sodium bicarbonate, dehydrated alcohol and distilled water.
Wherein:
The water soluble acrylic acid material includes following components according to mass parts:
Esters of acrylic acid: 165~190 parts of butyl acrylate, 210~235 parts of methyl methacrylate；
The organosiloxane of the group containing end-vinyl: 6~10 parts of vinyltriethoxysilane, vinyl cyclotetrasiloxane 2
~3 parts；
Compound emulsifying agent: 9~11 parts of lauryl sodium sulfate, 15~20 parts of Polyethylene Octylphenol Ether；
Silane coupling agent: 3~6 parts of gamma-aminopropyl-triethoxy-silane；
Initiator: 2~3 parts of ammonium persulfate；
Auxiliary agent: 3~5 parts of dimethicone；
Filler: 65~80 parts of talcum powder, 10~20 parts of titanium dioxide；
6~12 parts of ammonium hydroxide, 2~4 parts of sodium bicarbonate, 10~25 parts of dehydrated alcohol, 550~650 parts of distilled water.
The modified pitch is SBS modified pitch.
The basalt aggregate particle size distribution range is 0.075mm~4.75mm.
The water soluble acrylic acid material modification steel slag particle size distribution range is 4.75mm~16mm, and immersion expansion rate is small
In 1.5%, it is greater than 90 ° with the contact angle of water, is obtained by common converter steel slag through water soluble acrylic acid material modification.
The miberal powder is limestone dust or magmatic rock miberal powder, and partial size is not more than 0.075mm, and specific surface area is greater than
400m2/kg。
The present invention also provides a kind of intensive preparation method for matching asphalt prepared using modified steel scoria, this method
The following steps are included:
1) steel slag is modified: weighing raw material in proportion and prepares water soluble acrylic acid material, sprays water soluble acrylic acid on steel slag surface
Material, stirring in sprinkling makes water soluble acrylic acid material be evenly distributed on steel slag surface, and water soluble acrylic acid material is made to exist after solidification
Film forming is fully cured in steel slag surface, obtains water soluble acrylic acid material modification steel slag；
2) intensive allocation modifier steel slag asphalt mixture gradation: according to the aggregate grading design AC-13 modified steel of related specifications
Slag asphalt: water soluble acrylic acid material modification steel slag, 4.75mm~0.075mm particle size range more than 4.75mm partial size are used
It is interior to use basalt aggregate, miberal powder is used below 0.075mm partial size, pitch uses modified pitch；
3) intensive allocation modifier steel slag asphalt mixture preparation: by water soluble acrylic acid material modification steel slag, basalt aggregate, mine
Powder and modified pitch heat respectively, according to corresponding gradation design by water soluble acrylic acid material modification steel slag, the basalt of heating
Gather materials and be placed in mixing machine with miberal powder, adds modified pitch, mix is to uniformly up to modified steel scoria asphalt.
Wherein:
It is sprayed in aqueous acryhic material described in step 1) on steel slag surface, the quality of water soluble acrylic acid material is steel slag
The 6%~8% of quality；Described stirring in sprinkling is evenly distributed on water soluble acrylic acid material in steel slag surface, in revolving speed
To stir 4min~10min under conditions of 100rpm~200rpm, make water soluble acrylic acid material in steel slag table after the solidification
Face is fully cured in film forming, and condition of cure is to solidify 5h~6h in room temperature condition.
Sprayed in aqueous acryhic material described in step 1) on steel slag surface, steel slag according to screen size 16mm,
13.2mm, 9.5mm, 4.75mm screening, obtain tri- 16mm~13.2mm, 13.2mm~9.5mm, 9.5mm~4.75mm partial sizes
The steel slag being distributed in range, is rinsed well later, and 2h~5h is dried in 50 DEG C~180 DEG C baking ovens, is cooled down under room temperature.
Water soluble acrylic acid material modification steel slag, basalt aggregate, miberal powder and modified pitch are added respectively described in step 3)
Heat refers to heating 2h~3h in 170 DEG C~190 DEG C baking ovens；Mixer described in step 3) need to be preheated in advance 175 DEG C~
185℃；Mix described in step 3) is to uniformly up in modified steel scoria asphalt, duration of mixing is 1min~2min.
The specific mode of action is: using organic-philic water soluble acrylic acid material steel slag surface formed one layer it is fine and close hydrophobic
Film, and the organic-philic group that the hydrophobic membrane has can mutually be infiltrated with pitch, formed strong interaction, enhanced steel slag table
The adhesion strength in face and pitch, hydrophobic membrane and pitch membrane interaction are adsorbed on steel slag surface jointly, reduce the volume of steel slag
Expansion.
The utility model has the advantages that compared with prior art, present invention has the advantage that
1) it reduces the production cost of asphalt: cheap Steel-slag on the one hand having been used to replace natural high-quality collection
Material, on the other hand reduces the asphalt content of steel slag asphalt mixture；
2) environmentally friendly: on the one hand to replace non-renewable high-quality building stones using discarded Steel-slag, avoid the exhaustive exploitation of massif
With soil pollution caused by steel slag, natural ecological environment, the technique letter of another aspect water soluble acrylic acid material modification steel slag are protected
Single, room temperature construction does not need special installation, while avoiding the use of the organic solvent of pollution；
3) present invention forms one layer of fine and close hydrophobic membrane on steel slag surface using organic-philic water soluble acrylic acid material, and should
The organic-philic group that hydrophobic membrane has can mutually be infiltrated with pitch, form strong interaction, enhance steel slag surface and drip
Green adhesion strength, hydrophobic membrane and pitch membrane interaction are adsorbed on steel slag surface jointly, reduce the volume expansion of steel slag；
4) modified steel scoria performance of asphalt mixture is good: steel slag quality is hard, wear-proof sliding-proof and passes through modified asphalt content
It reduces, improves the high-temperature stability of mixture；Acryhic material has good flexibility under cryogenic, will not be as drip
Blueness is easy to happen brittle break at low temperature, therefore low-temperature cracking-resistance is good；Due to the collective effect of hydrophobic membrane and asphalt membrane, prevent
Contact of the steel slag with water, improves steel slag asphalt mixture water stabilizing.
Specific embodiment
Below with reference to the embodiment content that the present invention is furture elucidated.
Embodiment 1
A kind of intensively to match asphalt using prepared by modified steel scoria, this intensively matches asphalt according to mass parts packet
Include following components: 25 parts of basalt aggregate that 4 parts of SBS modified pitch, partial size are 4.75mm~0.075mm, partial size 4.75mm
55 parts of water soluble acrylic acid material modification steel slag, the partial size of~16mm are not more than 4 parts of limestone mineral powder of 0.075mm；
Water soluble acrylic acid material modification steel slag is the common converter steel slag that surface is covered with water soluble acrylic acid material, immersion
Expansion rate is greater than 90 ° less than 1.5%, with the contact angle of water；The water soluble acrylic acid material includes with the following group according to mass parts
Point:
Esters of acrylic acid: 165 parts of butyl acrylate, 210 parts of methyl methacrylate；
The organosiloxane of the group containing end-vinyl: 6 parts of vinyltriethoxysilane, 2 parts of vinyl cyclotetrasiloxane；
Compound emulsifying agent: 9 parts of lauryl sodium sulfate, 15 parts of Polyethylene Octylphenol Ether；
Silane coupling agent: 3 parts of gamma-aminopropyl-triethoxy-silane；
Initiator: 2 parts of ammonium persulfate；
Auxiliary agent: 3 parts of dimethicone；
Filler: 65 parts of talcum powder, 10 parts of titanium dioxide；
6 parts of ammonium hydroxide, 2 parts of sodium bicarbonate, 10 parts of dehydrated alcohol, 550 parts of distilled water.
A kind of intensive preparation method for matching asphalt prepared using modified steel scoria, method includes the following steps:
1) steel slag sieves: common converter steel slag being sieved according to screen size 16mm, 13.2mm, 9.5mm, 4.75mm, is obtained
The steel slag being distributed in tri- 16mm~13.2mm, 13.2mm~9.5mm, 9.5mm~4.75mm particle size ranges；
2) steel slag rinses: the common converter steel slag of above-mentioned each shelves partial size being rinsed well with clean water, is then dried at 50 DEG C
2h is dried in case, is finally cooled down at room temperature；
3) steel slag is modified: weighing raw material in proportion and prepares water soluble acrylic acid material, weighs the aqueous acrylamide of steel slag quality 6%
Sour sprays materials stir 4min with the revolving speed of 100rpm, are uniformly distributed water soluble acrylic acid material to steel slag surface in sprinkling
On steel slag surface, makes water soluble acrylic acid material that film forming be fully cured on steel slag surface after solidifying 5h under room temperature, obtain aqueous
Acryhic material modified steel scoria；
4) intensive allocation modifier steel slag asphalt mixture gradation: according to the aggregate grading design AC-13 modified steel of related specifications
Slag asphalt: water soluble acrylic acid material modification steel slag, 4.75mm~0.075mm particle size range more than 4.75mm partial size are used
It is interior to use basalt fine aggregate, limestone dust is used below 0.075mm partial size；
5) intensive allocation modifier steel slag asphalt mixture preparation: weigh water soluble acrylic acid material modification steel slag, basalt aggregate,
Limestone dust and SBS modified pitch simultaneously heat 2h in 170 DEG C of baking ovens respectively, according to corresponding gradation design by the water of heating
Property acryhic material modified steel scoria, basalt aggregate and miberal powder are preheating in 175 DEG C of mixing machines, are added SBS modified pitch, are mixed
1min is closed to uniformly up to modified steel scoria asphalt.
Embodiment 2
A kind of intensively to match asphalt using prepared by modified steel scoria, this intensively matches asphalt according to mass parts packet
Include following components: 30 parts of basalt aggregate that 4.2 parts of SBS modified pitch, partial size are 4.75mm~0.075mm, partial size are
60 parts of water soluble acrylic acid material modification steel slag, the partial size of 4.75mm~16mm are not more than 5 parts of limestone mineral powder of 0.075mm；
Water soluble acrylic acid material modification steel slag is the common converter steel slag that surface is covered with water soluble acrylic acid material, immersion
Expansion rate is greater than 90 ° less than 1.5%, with the contact angle of water；The water soluble acrylic acid material includes with the following group according to mass parts
Point:
Esters of acrylic acid: 170 parts of butyl acrylate, 215 parts of methyl methacrylate；
The organosiloxane of the group containing end-vinyl: 7 parts of vinyltriethoxysilane, 2 parts of vinyl cyclotetrasiloxane；
Compound emulsifying agent: 9 parts of lauryl sodium sulfate, 15 parts of Polyethylene Octylphenol Ether；
Silane coupling agent: 3 parts of gamma-aminopropyl-triethoxy-silane；
Initiator: 2 parts of ammonium persulfate；
Auxiliary agent: 3 parts of dimethicone；
Filler: 63 parts of talcum powder, 12 parts of titanium dioxide；
7 parts of ammonium hydroxide, 2 parts of sodium bicarbonate, 12 parts of dehydrated alcohol, 565 parts of distilled water.
A kind of intensive preparation method for matching asphalt prepared using modified steel scoria, method includes the following steps:
1) steel slag sieves: common converter steel slag being sieved according to screen size 16mm, 13.2mm, 9.5mm, 4.75mm, is obtained
The steel slag being distributed in tri- 16mm~13.2mm, 13.2mm~9.5mm, 9.5mm~4.75mm particle size ranges；
2) steel slag rinses: the common converter steel slag of above-mentioned each shelves partial size being rinsed well with clean water, is then dried at 80 DEG C
2.5h is dried in case, is finally cooled down at room temperature；
3) steel slag is modified: weighing raw material in proportion and prepares water soluble acrylic acid material, weighs aqueous the third of steel slag quality 6.5%
Olefin(e) acid sprays materials stir 5min with the revolving speed of 120rpm, divide water soluble acrylic acid material uniformly to steel slag surface in sprinkling
Cloth makes water soluble acrylic acid material that film forming be fully cured on steel slag surface, obtains water on steel slag surface after solidifying 5h under room temperature
Property acryhic material modified steel scoria；
4) intensive allocation modifier steel slag asphalt mixture gradation: according to the aggregate grading design AC-13 modified steel of related specifications
Slag asphalt: water soluble acrylic acid material modification steel slag, 4.75mm~0.075mm particle size range more than 4.75mm partial size are used
It is interior to use basalt fine aggregate, limestone dust is used below 0.075mm partial size；
5) intensive allocation modifier steel slag asphalt mixture preparation: weigh water soluble acrylic acid material modification steel slag, basalt aggregate,
Limestone dust and SBS modified pitch simultaneously heat 2h in 170 DEG C of baking ovens respectively, according to corresponding gradation design by the water of heating
Property acryhic material modified steel scoria, basalt aggregate and miberal powder are preheating in 175 DEG C of mixing machines, are added SBS modified pitch, are mixed
1min is closed to uniformly up to modified steel scoria asphalt.
Embodiment 3
A kind of intensively to match asphalt using prepared by modified steel scoria, this intensively matches asphalt according to mass parts packet
Include following components: 40 parts of basalt aggregate that 4.5 parts of SBS modified pitch, partial size are 4.75mm~0.075mm, partial size are
60 parts of water soluble acrylic acid material modification steel slag, the partial size of 4.75mm~16mm are not more than 6 parts of limestone mineral powder of 0.075mm；
Water soluble acrylic acid material modification steel slag is the common converter steel slag that surface is covered with water soluble acrylic acid material, immersion
Expansion rate is greater than 90 ° less than 1.5%, with the contact angle of water；The water soluble acrylic acid material includes with the following group according to mass parts
Point:
Esters of acrylic acid: 175 parts of butyl acrylate, 220 parts of methyl methacrylate；
The organosiloxane of the group containing end-vinyl: 7 parts of vinyltriethoxysilane, 2 parts of vinyl cyclotetrasiloxane；
Compound emulsifying agent: 9 parts of lauryl sodium sulfate, 17 parts of Polyethylene Octylphenol Ether；
Silane coupling agent: 4 parts of gamma-aminopropyl-triethoxy-silane；
Initiator: 2 parts of ammonium persulfate；
Auxiliary agent: 3 parts of dimethicone；
Filler: 70 parts of talcum powder, 14 parts of titanium dioxide；
8 parts of ammonium hydroxide, 2 parts of sodium bicarbonate, 15 parts of dehydrated alcohol, 580 parts of distilled water.
A kind of intensive preparation method for matching asphalt prepared using modified steel scoria, method includes the following steps:
1) steel slag sieves: common converter steel slag being sieved according to screen size 16mm, 13.2mm, 9.5mm, 4.75mm, is obtained
The steel slag being distributed in tri- 16mm~13.2mm, 13.2mm~9.5mm, 9.5mm~4.75mm particle size ranges；
2) steel slag rinses: the common converter steel slag of above-mentioned each shelves partial size being rinsed well with clean water, is then dried at 100 DEG C
3h is dried in case, is finally cooled down at room temperature；
3) steel slag is modified: weighing raw material in proportion and prepares water soluble acrylic acid material, weighs the aqueous acrylamide of steel slag quality 7%
Sour sprays materials, with the revolving speed 6min of 140rpm, make water soluble acrylic acid material be evenly distributed on steel to steel slag surface in sprinkling
Slag surface makes water soluble acrylic acid material that film forming be fully cured on steel slag surface, obtains aqueous third after solidifying 5.5h under room temperature
Olefin(e) acid material modification steel slag；
4) intensive allocation modifier steel slag asphalt mixture gradation: according to the aggregate grading design AC-13 modified steel of related specifications
Slag asphalt: water soluble acrylic acid material modification steel slag, 4.75mm~0.075mm particle size range more than 4.75mm partial size are used
It is interior to use basalt fine aggregate, limestone dust is used below 0.075mm partial size；
5) intensive allocation modifier steel slag asphalt mixture preparation: weigh water soluble acrylic acid material modification steel slag, basalt aggregate,
Limestone dust and SBS modified pitch simultaneously heat 2.5h in 175 DEG C of baking ovens respectively, according to corresponding gradation design by heating
Water soluble acrylic acid material modification steel slag, basalt aggregate and miberal powder are preheating in 180 DEG C of mixing machines, add SBS modified pitch,
Mix 1.5min is to uniformly up to modified steel scoria asphalt.
Embodiment 4
A kind of intensively to match asphalt using prepared by modified steel scoria, this intensively matches asphalt according to mass parts packet
Include following components: 45 parts of basalt aggregate that 4.8 parts of SBS modified pitch, partial size are 4.75mm~0.075mm, partial size are
65 parts of water soluble acrylic acid material modification steel slag, the partial size of 4.75mm~16mm are not more than 6 parts of miberal powder of 0.075mm；
Water soluble acrylic acid material modification steel slag is the common converter steel slag that surface is covered with water soluble acrylic acid material, immersion
Expansion rate is greater than 90 ° less than 1.5%, with the contact angle of water；The water soluble acrylic acid material includes with the following group according to mass parts
Point:
Esters of acrylic acid: 185 parts and 230 parts of methyl methacrylate of butyl acrylate；
The organosiloxane of the group containing end-vinyl: 9 parts of vinyltriethoxysilane and vinyl cyclotetrasiloxane 2.5
Part；
Compound emulsifying agent: 10 parts and 19 parts of Polyethylene Octylphenol Ether of lauryl sodium sulfate；
Silane coupling agent: 5 parts of gamma-aminopropyl-triethoxy-silane；
Initiator: 2.5 parts of ammonium persulfate；
Auxiliary agent: 4 parts of dimethicone；
Filler: 75 parts and 18 parts of titanium dioxide of talcum powder；
10 parts of ammonium hydroxide, 3 parts of sodium bicarbonate, 20 parts of dehydrated alcohol, 610 parts of distilled water.
A kind of intensive preparation method for matching asphalt prepared using modified steel scoria, method includes the following steps:
1) steel slag sieves: common converter steel slag being sieved according to screen size 16mm, 13.2mm, 9.5mm, 4.75mm, is obtained
The steel slag being distributed in tri- 16mm~13.2mm, 13.2mm~9.5mm, 9.5mm~4.75mm particle size ranges；
2) steel slag rinses: the common converter steel slag of above-mentioned each shelves partial size being rinsed well with clean water, is then dried at 150 DEG C
4h is dried in case, is finally cooled down at room temperature；
3) steel slag is modified: weighing raw material in proportion and prepares water soluble acrylic acid material, weighs aqueous the third of steel slag quality 7.5%
Olefin(e) acid sprays materials stir 8min in sprinkling with the revolving speed of 180rpm, divide water soluble acrylic acid material uniformly to steel slag surface
Cloth makes water soluble acrylic acid material that film forming be fully cured on steel slag surface, obtains on steel slag surface after solidifying 5.5h under room temperature
Water soluble acrylic acid material modification steel slag；
4) intensive allocation modifier steel slag asphalt mixture gradation: according to the aggregate grading design AC-13 modified steel of related specifications
Slag asphalt: water soluble acrylic acid material modification steel slag, 4.75mm~0.075mm particle size range more than 4.75mm partial size are used
It is interior to use basalt fine aggregate, miberal powder is used below 0.075mm partial size；
5) intensive allocation modifier steel slag asphalt mixture preparation: weigh water soluble acrylic acid material modification steel slag, basalt aggregate,
Miberal powder and SBS modified pitch simultaneously heat 2.5h in 185 DEG C of baking ovens respectively, according to corresponding gradation design by aqueous the third of heating
Olefin(e) acid material modification steel slag, basalt aggregate and miberal powder are preheating in 180 DEG C of mixing machines, add SBS modified pitch, mix
1.5min is to uniformly up to modified steel scoria asphalt.
Embodiment 5
A kind of intensively to match asphalt using prepared by modified steel scoria, this intensively matches asphalt according to mass parts packet
Include following components: 50 parts of basalt aggregate that 5 parts of SBS modified pitch, partial size are 4.75mm~0.075mm, partial size 4.75mm
70 parts of water soluble acrylic acid material modification steel slag, the partial size of~16mm are not more than 7 parts of miberal powder of 0.075mm；
Water soluble acrylic acid material modification steel slag is the common converter steel slag that surface is covered with water soluble acrylic acid material, immersion
Expansion rate is greater than 90 ° less than 1.5%, with the contact angle of water；The water soluble acrylic acid material includes with the following group according to mass parts
Point:
Esters of acrylic acid: 190 parts and 235 parts of methyl methacrylate of butyl acrylate；
The organosiloxane of the group containing end-vinyl: 10 parts and 3 parts of vinyl cyclotetrasiloxane of vinyltriethoxysilane；
Compound emulsifying agent: 11 parts and 20 parts of Polyethylene Octylphenol Ether of lauryl sodium sulfate；
Silane coupling agent: 6 parts of gamma-aminopropyl-triethoxy-silane；
Initiator: 3 parts of ammonium persulfate；
Auxiliary agent: 5 parts of dimethicone；
Filler: 80 parts and 20 parts of titanium dioxide of talcum powder；
12 parts of ammonium hydroxide, 4 parts of sodium bicarbonate, 25 parts of dehydrated alcohol, 650 parts of distilled water.
A kind of intensive preparation method for matching asphalt prepared using modified steel scoria, method includes the following steps:
1) steel slag sieves: common converter steel slag being sieved according to screen size 16mm, 13.2mm, 9.5mm, 4.75mm, is obtained
The steel slag being distributed in tri- 16mm~13.2mm, 13.2mm~9.5mm, 9.5mm~4.75mm particle size ranges；
2) steel slag rinses: the common converter steel slag of above-mentioned each shelves partial size being rinsed well with clean water, is then dried at 180 DEG C
5h is dried in case, is finally cooled down at room temperature；
3) steel slag is modified: weighing raw material in proportion and prepares water soluble acrylic acid material, weighs the aqueous acrylamide of steel slag quality 8%
Sour sprays materials stir 10min in sprinkling with the revolving speed of 200rpm, are uniformly distributed water soluble acrylic acid material to steel slag surface
On steel slag surface, makes water soluble acrylic acid material that film forming be fully cured on steel slag surface after solidifying 6h under room temperature, obtain aqueous
Acryhic material modified steel scoria；
4) intensive allocation modifier steel slag asphalt mixture gradation: according to the aggregate grading design AC-13 modified steel of related specifications
Slag asphalt: water soluble acrylic acid material modification steel slag, 4.75mm~0.075mm particle size range more than 4.75mm partial size are used
It is interior to use basalt fine aggregate, miberal powder is used below 0.075mm partial size；
5) intensive allocation modifier steel slag asphalt mixture preparation: weigh water soluble acrylic acid material modification steel slag, basalt aggregate,
Miberal powder and SBS modified pitch simultaneously heat 3h in 190 DEG C of baking ovens respectively, according to corresponding gradation design by the aqueous acrylamide of heating
Sour material modification steel slag, basalt aggregate and miberal powder are preheating in 185 DEG C of mixing machines, add SBS modified pitch, mix 2min
To uniformly up to modified steel scoria asphalt.
Reference examples 1
A kind of intensively to match basalt asphalt, the weight fraction of various raw materials is as follows: 4.8 parts of SBS modified pitch,
60 parts, 6 parts of limestone mineral powder of the above basalt aggregate of 45 parts of 4.75mm~0.075mm partial size basalt aggregate, 4.75mm partial size.
Preparation method is as follows: in proportion by the basalt aggregate of different-grain diameter, limestone and SBS modified pitch 170
2h is heated in DEG C baking oven, then the thickness of heating, which is gathered materials, according to corresponding gradation design to be placed in miberal powder is preheating to 180 DEG C and mixes
In conjunction machine, SBS modified pitch is added, mix 2min is until uniformly to get to intensively with basalt asphalt.
Reference examples 2
A kind of intensively to match common steel slag asphalt, the weight fraction of various raw materials is as follows: SBS modified pitch 4.8
More than part, 45 parts of 4.75mm~0.075mm partial size basalt aggregate, 4.75mm partial size common 60 parts of steel slag, limestone mineral powder 6
Part.
Preparation method is as follows: basalt aggregate, common steel slag, miberal powder and SBS modified pitch are added in 170 DEG C of baking ovens
Then the basalt aggregate of heating, common steel slag and miberal powder are placed according to corresponding gradation design and are preheating to 180 DEG C and mix by hot 2h
In conjunction machine, SBS modified pitch is added, mix 2min is until uniformly to get to intensively with common steel slag asphalt.
The performance for the asphalt that Examples 1 to 5 and reference examples 1~2 obtain is as shown in table 1, the test of various performances
Method please refers to " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTG E20-2011).
Table 1: various performance of asphalt mixture compare
As can be seen from the table, compared with intensively matching common steel slag asphalt, water soluble acrylic acid provided by the invention
Material modification steel slag asphalt mixture has preferable high-temperature stability, low-temperature cracking-resistance and water stability.
Claims (10)
1. a kind of intensively match asphalt using prepared by modified steel scoria, it is characterised in that: this is intensively pressed with asphalt
Include following components according to mass parts:
4~5 parts of modified pitch；
25~50 parts of basalt aggregate；
55~70 parts of water soluble acrylic acid material modification steel slag；
4~7 parts of miberal powder；
Wherein water soluble acrylic acid material modification steel slag is the steel slag that surface is covered with water soluble acrylic acid material, water soluble acrylic acid material
Including esters of acrylic acid, containing end-vinyl group organosiloxane, compound emulsifying agent, silane coupling agent, initiator, auxiliary agent, fill out
Material, ammonium hydroxide, sodium bicarbonate, dehydrated alcohol and distilled water.
2. a kind of as described in claim 1 use the intensive of modified steel scoria preparation to match asphalt, it is characterised in that: described
Water soluble acrylic acid material according to mass parts include following components:
Esters of acrylic acid: 165~190 parts of butyl acrylate, 210~235 parts of methyl methacrylate；
The organosiloxane of the group containing end-vinyl: 6~10 parts of vinyltriethoxysilane, vinyl cyclotetrasiloxane 2~3
Part；
Compound emulsifying agent: 9~11 parts of lauryl sodium sulfate, 15~20 parts of Polyethylene Octylphenol Ether；
Silane coupling agent: 3~6 parts of gamma-aminopropyl-triethoxy-silane；
Initiator: 2~3 parts of ammonium persulfate；
Auxiliary agent: 3~5 parts of dimethicone；
Filler: 65~80 parts of talcum powder, 10~20 parts of titanium dioxide；
6~12 parts of ammonium hydroxide, 2~4 parts of sodium bicarbonate, 10~25 parts of dehydrated alcohol, 550~650 parts of distilled water.
3. a kind of as described in claim 1 use the intensive of modified steel scoria preparation to match asphalt, it is characterised in that: described
Modified pitch be SBS modified pitch.
4. a kind of as described in claim 1 use the intensive of modified steel scoria preparation to match asphalt, it is characterised in that: described
Basalt aggregate particle size distribution range be 0.075mm~4.75mm.
5. a kind of as described in claim 1 use the intensive of modified steel scoria preparation to match asphalt, it is characterised in that: described
Water soluble acrylic acid material modification steel slag particle size distribution range be 4.75mm~16mm, soak expansion rate less than 1.5%, with water
Contact angle be greater than 90 °, obtained by common converter steel slag through water soluble acrylic acid material modification.
6. a kind of as described in claim 1 use the intensive of modified steel scoria preparation to match asphalt, it is characterised in that: described
Miberal powder be limestone dust or magmatic rock miberal powder, partial size be not more than 0.075mm, specific surface area be greater than 400m2/kg。
7. a kind of intensive preparation side for matching asphalt prepared using modified steel scoria as described in claim 1~6 is any
Method, it is characterised in that: method includes the following steps:
1) steel slag is modified: raw material is weighed in proportion and prepares water soluble acrylic acid material, sprays aqueous acryhic material on steel slag surface,
Stirring in sprinkling makes water soluble acrylic acid material be evenly distributed on steel slag surface, makes water soluble acrylic acid material in steel slag table after solidification
Film forming is fully cured in face, obtains water soluble acrylic acid material modification steel slag；
2) it intensive allocation modifier steel slag asphalt mixture gradation: is dripped according to the aggregate grading design AC-13 modified steel scoria of related specifications
Green mixture: water soluble acrylic acid material modification steel slag more than 4.75mm partial size is used, is adopted in 4.75mm~0.075mm particle size range
With basalt aggregate, miberal powder is used below 0.075mm partial size, pitch uses modified pitch；
3) intensive allocation modifier steel slag asphalt mixture preparation: by water soluble acrylic acid material modification steel slag, basalt aggregate, miberal powder and
Modified pitch heats respectively, according to corresponding gradation design by the water soluble acrylic acid material modification steel slag of heating, basalt aggregate
It is placed in mixing machine with miberal powder, adds modified pitch, mix is to uniformly up to modified steel scoria asphalt.
8. a kind of intensive preparation method for matching asphalt prepared using modified steel scoria as claimed in claim 7, special
Sign is: spraying in aqueous acryhic material described in step 1) on steel slag surface, the quality of water soluble acrylic acid material is steel slag
The 6%~8% of quality；, described stirring in sprinkling is evenly distributed on water soluble acrylic acid material in steel slag surface, in revolving speed
4min~10min is stirred under conditions of 100rpm~200rpm, makes water soluble acrylic acid material on steel slag surface after the solidification
It is fully cured in film forming, condition of cure is to solidify 5h~6h in room temperature condition.
9. a kind of intensive preparation method for matching asphalt prepared using modified steel scoria as claimed in claim 7, special
Sign is: sprayed in aqueous acryhic material described in step 1) on steel slag surface, steel slag according to screen size 16mm,
13.2mm, 9.5mm, 4.75mm screening, obtain tri- 16mm~13.2mm, 13.2mm~9.5mm, 9.5mm~4.75mm partial sizes
The steel slag being distributed in range, is rinsed well later, and 2h~5h is dried in 50 DEG C~180 DEG C baking ovens, is cooled down under room temperature.
10. a kind of intensive preparation method for matching asphalt prepared using modified steel scoria as claimed in claim 7, special
Sign is: adding water soluble acrylic acid material modification steel slag, basalt aggregate, miberal powder and modified pitch respectively described in step 3)
Heat refers to heating 2h~3h in 170 DEG C~190 DEG C baking ovens；Mixer described in step 3) need to be preheated in advance 175 DEG C~
185℃；Mix described in step 3) is to uniformly up in modified steel scoria asphalt, duration of mixing is 1min~2min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910361150.8A CN110156380B (en) | 2019-04-30 | 2019-04-30 | Densely-mixed asphalt mixture prepared from modified steel slag and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910361150.8A CN110156380B (en) | 2019-04-30 | 2019-04-30 | Densely-mixed asphalt mixture prepared from modified steel slag and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110156380A true CN110156380A (en) | 2019-08-23 |
| CN110156380B CN110156380B (en) | 2022-03-08 |
Family
ID=67633100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910361150.8A Active CN110156380B (en) | 2019-04-30 | 2019-04-30 | Densely-mixed asphalt mixture prepared from modified steel slag and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110156380B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111285637A (en) * | 2020-03-30 | 2020-06-16 | 中南大学 | Open-graded wearing layer asphalt mixture and preparation method thereof |
| CN111689717A (en) * | 2020-05-29 | 2020-09-22 | 上海海事大学 | Antiskid and wear-resistant colored asphalt concrete |
| CN112175600A (en) * | 2020-08-31 | 2021-01-05 | 西南石油大学 | Novel foam stabilizer and preparation method thereof |
| CN113754340A (en) * | 2021-08-16 | 2021-12-07 | 贵州工程应用技术学院 | Composite admixture for improving durability of common concrete through improved gradation |
| CN114853377A (en) * | 2022-05-10 | 2022-08-05 | 无锡市城市道桥科技有限公司 | Modification process of steel slag asphalt mixture |
| CN114853378A (en) * | 2022-05-24 | 2022-08-05 | 南京盛科道路新材料科技有限公司 | Drainage type asphalt mixture and preparation method thereof |
| CN116239350A (en) * | 2023-02-06 | 2023-06-09 | 山东水总有限公司 | Concrete resistant to temperature change cracking and production process thereof |
| CN116535137A (en) * | 2023-03-27 | 2023-08-04 | 东南大学 | Tunnel pavement mixture with porous steel slag loaded with nano flame retardant and construction method thereof |
| CN117819879A (en) * | 2024-03-05 | 2024-04-05 | 山东交通学院 | Low-temperature environment-friendly full-heat-braised steel slag aggregate asphalt mixture and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002032830A2 (en) * | 2000-10-17 | 2002-04-25 | James Hardie Research Pty Limited | Fiber cement composite material using biocide treated durable cellulose fibers |
| CN1472159A (en) * | 2003-05-08 | 2004-02-04 | 同济大学 | Acrylic acid slag decorative materials and preparing method thereof |
| CN105503040A (en) * | 2016-01-08 | 2016-04-20 | 赵建林 | Steel slag permeable building material and manufacturing method thereof |
-
2019
- 2019-04-30 CN CN201910361150.8A patent/CN110156380B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002032830A2 (en) * | 2000-10-17 | 2002-04-25 | James Hardie Research Pty Limited | Fiber cement composite material using biocide treated durable cellulose fibers |
| CN1472159A (en) * | 2003-05-08 | 2004-02-04 | 同济大学 | Acrylic acid slag decorative materials and preparing method thereof |
| CN105503040A (en) * | 2016-01-08 | 2016-04-20 | 赵建林 | Steel slag permeable building material and manufacturing method thereof |
Non-Patent Citations (3)
| Title |
|---|
| LILI MA: "Expansion inhibition of steel slag in asphalt mixture by a surface water isolation structure", 《ROAD MATERIALS AND PAVEMENT DESIGN》 * |
| 卢少忠: "《建筑涂料工程 性能•生产•施工》", 31 August 2007, 中国建材工业出版社 * |
| 强涛涛: "《合成革化学品》", 31 July 2016, 中国轻工业出版社 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111285637A (en) * | 2020-03-30 | 2020-06-16 | 中南大学 | Open-graded wearing layer asphalt mixture and preparation method thereof |
| CN111689717A (en) * | 2020-05-29 | 2020-09-22 | 上海海事大学 | Antiskid and wear-resistant colored asphalt concrete |
| CN112175600A (en) * | 2020-08-31 | 2021-01-05 | 西南石油大学 | Novel foam stabilizer and preparation method thereof |
| CN112175600B (en) * | 2020-08-31 | 2022-07-01 | 西南石油大学 | Novel foam stabilizer and preparation method thereof |
| CN113754340A (en) * | 2021-08-16 | 2021-12-07 | 贵州工程应用技术学院 | Composite admixture for improving durability of common concrete through improved gradation |
| CN114853377A (en) * | 2022-05-10 | 2022-08-05 | 无锡市城市道桥科技有限公司 | Modification process of steel slag asphalt mixture |
| CN114853378A (en) * | 2022-05-24 | 2022-08-05 | 南京盛科道路新材料科技有限公司 | Drainage type asphalt mixture and preparation method thereof |
| CN116239350A (en) * | 2023-02-06 | 2023-06-09 | 山东水总有限公司 | Concrete resistant to temperature change cracking and production process thereof |
| CN116535137A (en) * | 2023-03-27 | 2023-08-04 | 东南大学 | Tunnel pavement mixture with porous steel slag loaded with nano flame retardant and construction method thereof |
| CN117819879A (en) * | 2024-03-05 | 2024-04-05 | 山东交通学院 | Low-temperature environment-friendly full-heat-braised steel slag aggregate asphalt mixture and preparation method thereof |
| CN117819879B (en) * | 2024-03-05 | 2024-05-10 | 山东交通学院 | Low-temperature environment-friendly full-heat-braised steel slag aggregate asphalt mixture and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110156380B (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110156380A (en) | It is a kind of intensively to match asphalt and preparation method using prepared by modified steel scoria | |
| CN104891888B (en) | A kind of imitative stone material environment-friendly concrete pavior brick and its manufacture method | |
| CN103073246B (en) | Special masonry binder for autoclaved aerated concrete | |
| CN110734257A (en) | Preparation method of high impervious concrete | |
| CN101050093A (en) | Composition of road surface material of pervious cement concrete by using steel slag as aggregate, and method | |
| JP6871660B1 (en) | Oil shale slag concrete compounding ratio design method | |
| CN105733382B (en) | A kind of micro-nano reinforced steel bar rust preventing agent and preparation method thereof of autoclaved aerated concrete slab | |
| CN103952958A (en) | Method for rut maintaining and paving of municipal road | |
| CN103979807B (en) | A kind of construction refuse regenerated high-activity mineral blending material and preparation thereof | |
| CN104261723A (en) | Dry powder additive for masonry and rendering mortar and production technique thereof | |
| CN105347732A (en) | Antifreeze durable resin and concrete composite water-permeable floor tile | |
| CN1994709A (en) | Preparation method of concrete mixed with addition and aggregate | |
| CN104140229A (en) | Shrinkage-compensating recycled concrete and preparation method thereof | |
| CN110104981A (en) | A kind of and strong water proof slag as aggregate and preparation method thereof of asphalt adhesion | |
| CN102399073A (en) | Formula and preparation process for dry-mixed mortar | |
| CN102838334B (en) | Concrete member mending agent, preparation method and construction method | |
| CN103086619A (en) | Method for preparing construction waste micro-powder composite admixture | |
| CN103011750A (en) | Organic-inorganic composite light-weight and high-strength baseplate and preparation method thereof | |
| CN108793935B (en) | Precast dry material sprayed concrete | |
| CN108751865A (en) | Body refuse soil regeneration baking-free brick and preparation method thereof more than a kind of | |
| CN108033731A (en) | Decorate granolithic concrete and its preparation process | |
| CN113387620A (en) | Solidified dredged sludge block based on alkali-activated cementing material and preparation method thereof | |
| CN115159946A (en) | High-strength gypsum-based sand-free self-leveling mortar with high fluidity and preparation method and application thereof | |
| CN103755379B (en) | Method of preparing foamed air brick by taking iron tailings as main material | |
| CN103224364B (en) | Low-carbon (LC) high-performance tunnel sprays series special concrete |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |