CN106477931A - Modified active phosphorus slag, preparation method and modified active phosphoric slag cement and concrete - Google Patents

Modified active phosphorus slag, preparation method and modified active phosphoric slag cement and concrete Download PDF

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Publication number
CN106477931A
CN106477931A CN201610873506.2A CN201610873506A CN106477931A CN 106477931 A CN106477931 A CN 106477931A CN 201610873506 A CN201610873506 A CN 201610873506A CN 106477931 A CN106477931 A CN 106477931A
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slag
phosphorus slag
modified active
cement
content
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CN106477931B (en
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王昕�
颜碧兰
刘晨
朱文尚
杜勇
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China Building Materials Academy CBMA
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China Building Materials Academy CBMA
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/023—Chemical treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Abstract

The present invention is with regard to a kind of modified active phosphorus slag, preparation method and modified active phosphoric slag cement and concrete, and modified active phosphorus slag includes:Activating agent and phosphorus slag；Activating agent and phosphorus slag mass ratio are 0.5 1:10；Moisture in phosphorus slag is less than phosphorus slag weight 2%；The weight ratio of active agent component is：50 70 parts of carbide slag, aluminium sulfate slag：0 40 parts, red mud：0 40 parts, aluminous fly-ash：0 30, Gypsum Fibrosum：20 30 parts, anhydrous calcium sulphoaluminate mineral：0 30 parts.Modified active phosphorus slag of the present invention eliminates harmful components in phosphorus slag to be affected on cement and concrete performance, and modified active phosphorus slag makes cement setting time shorten, and intensity improves, and so that each age strength of concrete is improved, each age contract with dry rate is less than slag powders simultaneously；The present invention is various industrial residues to activator used during phosphorus slag modified active, without chemi-excitation reagent, cement and concrete serviceability and endurance quality etc. are all had no adverse effects, so that high-dopant phosphorus slag is applied in cement and concrete and be possibly realized, reach the purpose turning waste into wealth.

Description

Modified active phosphorus slag, preparation method and modified active phosphoric slag cement and concrete
Technical field
The present invention relates to a kind of modified active phosphorus slag, more particularly to a kind of modified active phosphorus slag, preparation method and modification Activation phosphoric slag cement and concrete.
Background technology
Phosphorus slag is good recycling resource, and its chemical composition is similar to slag with ore deposit phase composition, has good diving In the hydraulicity, and it is good, impervious strong, the features such as later strength rate of increase is big to have concrete workability.At present, phosphorus slag is in cement The aspects such as sill, sintered hollow block, steam pressure building-block, devitrified glass, non-fired and non-steamed bricks, road surface base layer material, rock wool have Certain application.But, due to P in phosphorus slag2O5There is considerable influence etc. harmful components to cement setting hardening and early strength development, Thus its application percentage in cement industry and concrete construction engineering is not high, most of phosphorus slag air storage (accumulative stacking Amount is more than 90,000,000 tons), to ecological environment structure serious harm.
For improving reactivity of phosphor slag, eliminating harmful components impact in phosphorus slag, people have carried out numerous studies nearly ten years.Mesh Before, reactivity of phosphor slag exciting method is divided into mechanical activation, chemical activation and multiplicity reactivation etc. three class.Wherein, mechanical activation is profit Improve phosphorus slag reaction contact area and vitreous body fracture bond number with mechanical grinding mode, improve phosphorus slag powder body distribution of particles, strengthen Phosphorus slag hydration reaction activity；Chemical activation mainly makes phosphorus slag vitreous body disintegrate by alkalescence condition, or acceleration of hydration hardening, with Improve phosphorus slag reactivity；Multiplicity reactivation is that first two method is combined.These activity methods technological means are different, and phosphorus slag is improved Effect is also different.But current activation method is less to cement serviceability, rheological characteristic and drying shrinkage, the characteristic concern such as anti-corrosion； And the use not only high cost of chemical reagent, there is also some shortcomings, such as highly basic, basic salt and villaumite exciting agent, easily simultaneously The phenomenons such as induction concrete alkali aggregate reaction, steel bar corrosion；Sulphate activation agent, calcium oxide equal excitation material also can feed water mud and Volume stability of concrete brings certain hidden danger；In addition excitation material incorporation in phosphorus slag is too high, also can be special to phosphorus slag aquation Property have a negative impact, the such as heat of hydration, impermeability, later strength rate of increase etc..
Content of the invention
Present invention is primarily targeted at, a kind of new modified activation phosphorus slag, preparation method and modified active phosphorus slag are provided Cement and concrete, technical problem to be solved is so that it is turned waste into wealth, thus more suitable for practicality.
The object of the invention to solve the technical problems employs the following technical solutions to realize.Propose according to the present invention A kind of modified active phosphorus slag, it includes:Activating agent and phosphorus slag, the mass ratio of described activating agent and phosphorus slag is 0.5-1:10； Wherein, the moisture in described phosphorus slag is less than the 2wt% of phosphorus slag weight；The weight ratio of the component of described activating agent is：Carbide slag 50-70 part, aluminium sulfate slag：0-40 part, red mud：0-40 part, aluminous fly-ash：0-30, Gypsum Fibrosum：20-30 part, anhydrous calcium sulphoaluminate Mineral：0-30 part.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, aforesaid modified active phosphorus slag, the calcium oxide content in wherein said carbide slag is more than or equal to 65wt%；Dioxide-containing silica in described aluminium sulfate slag is 60%-72wt%, and the content of aluminium sesquioxide is 8wt%- 15wt%；Calcium oxide in described red mud, alchlor and total silica content are more than 60wt%, K2O or Na2The content of O For 1wt%-3wt%；Alchlor content in described aluminous fly-ash is more than 35wt%.
Preferably, aforesaid modified active phosphorus slag, wherein said carbide slag is to prepare the Industry Waste that acetylene gas obtain Slag；Described aluminium sulfate slag is to prepare the industrial residue that bauxite obtains；Described red mud is to refine aluminium oxide to obtain industrial residue；Institute Stating aluminous fly-ash is coal-burning power plant's waste discharge gurry；Described anhydrous calcium sulphoaluminate mineral are sulphoaluminate cement clinker, described sulfur Mineral constituent content in aluminate cement grog is more than or equal to 55wt%.
The object of the invention to solve the technical problems also to be realized using following technical scheme.Propose according to the present invention A kind of modified active phosphorus slag preparation method, it comprises the following steps:Phosphorus slag is dried；By weight, power taking rock ballast 50- 70 parts, aluminium sulfate slag：0-40 part, red mud：0-40 part, aluminous fly-ash：0-30, Gypsum Fibrosum：20-30 part, anhydrous calcium sulphoaluminate ore deposit Thing：0-30 part, mix homogeneously, obtain activator；Phosphorus slag after drying and described activator are 0.5-1 in mass ratio:10 mix Close uniformly, grinding, obtain modified active phosphorus slag.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Preferably, phosphorus slag is wherein dried and is less than to moisture by the preparation method of aforesaid modified active phosphorus slag 2wt%.
Preferably, the preparation method of aforesaid modified active phosphorus slag, the temperature of wherein said drying is 100-200 DEG C.
Preferably, the preparation method of aforesaid modified active phosphorus slag, the calcium oxide content in wherein said carbide slag is big In equal to 65wt%, for preparing the industrial residue that acetylene gas obtain；Dioxide-containing silica in described aluminium sulfate slag is 60%-72wt%, the content of aluminium sesquioxide is 8wt%-15wt%, for preparing the industrial residue that bauxite obtains；Described Calcium oxide in red mud, alchlor and total silica content are more than 60wt%, K2O or Na2The content of O is 1wt%- 3wt%, obtains industrial residue for refining aluminium oxide；Alchlor content in described aluminous fly-ash is more than 35wt%, is Coal-burning power plant's waste discharge gurry；Described anhydrous calcium sulphoaluminate mineral are sulphoaluminate cement clinker, described sulphoaluminate cement clinker In mineral constituent content be more than or equal to 55wt%.
The object of the invention to solve the technical problems also to be realized using following technical scheme.Propose according to the present invention A kind of modified active phosphoric slag cement, its component (by weight percentage) include：Modified active phosphorus slag of the present invention： 30%-50%, cement base material:50%-70%；That above each group is divided and be 100%.
Preferably, aforesaid modified active phosphoric slag cement, wherein its presetting period are 1h：30min-6h：30min, final set Time is 3h-7h：30min；3d rupture strength is 2.2-4.2MPa, and 28d rupture strength is 6.7-8.6MPa；28d comprcssive strength For 38.8-53.0MPa, 3d comprcssive strength is 14.8-28.0MPa.
The object of the invention to solve the technical problems also to be realized using following technical scheme.Propose according to the present invention A kind of modified active phosphorus slag concrete, its component (by weight percentage) include：Modified active phosphorus slag of the present invention： 10%-30%, concrete base material:70%-90%；That above each group is divided and be 100%.
By technique scheme, modified active phosphorus slag of the present invention, preparation method and modified active phosphoric slag cement and coagulation Soil at least has following advantages：
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And can be practiced according to the content of description, after being described in detail such as with presently preferred embodiments of the present invention below.
1st, modified active phosphorus slag of the present invention eliminates P in phosphorus slag2O5Etc. harmful components, cement and concrete performance are affected. The present invention is modified activator used when activating and is essentially different types of industrial residue, without strong basicity or salt to phosphorus slag The chemi-excitation reagent such as class；The modified active phosphorus slag of the present invention makes cement setting time notable compared to without the phosphorus slag of overactivation Shorten, and cement 3 days and 28 days intensity all improve a lot, and so that each age strength of concrete is also improved simultaneously, each age does Shrinkage is less than slag powders；In addition the activator of the present invention to cement and concrete serviceability and endurance quality etc. all no bad shadow Ring, so that high-dopant phosphorus slag is applied in cement and concrete and be possibly realized.
2nd, the phosphorus slag improvement activation method of the present invention is easy and simple to handle, production equipment that need not be complicated, and economic and reliable is conducive to Phosphorus slag popularization and application in cement industry and Concrete Industry, have a extensive future.
3rd, the carbide slag of the annual discharge of China, aluminium sulfate slag, red mud, aluminous fly-ash, phosphorus slag be more than 25,000,000 tons, this Invention prepares modified active phosphorus slag using above industrial residue for raw material, has reached the purpose turning waste into wealth, cost-effective.
Specific embodiment
For further illustrating that the present invention is to reach technological means and effect that predetermined goal of the invention is taken, below in conjunction with Preferred embodiment, to according to modified active phosphorus slag proposed by the present invention, preparation method and modified active phosphoric slag cement and concrete Its specific embodiment, feature and its effect, after describing in detail such as.In the following description, different " embodiment " or " enforcement What example " referred to is not necessarily same embodiment.Additionally, the special characteristic in one or more embodiments or feature can be by any suitable shapes Formula combines.
A kind of modified active phosphorus slag that one embodiment of the present of invention proposes, it includes:Activating agent and phosphorus slag, wherein said Activating agent and phosphorus slag mass ratio be 0.5-1:10 wherein, and the moisture in described phosphorus slag is less than the 2% of phosphorus slag weight；Described The weight ratio of the component of activating agent is：Carbide slag 50-70 part, aluminium sulfate slag：0-40 part, red mud：0-40 part, aluminous fly-ash： 0-30, Gypsum Fibrosum：20-30 part, anhydrous calcium sulphoaluminate mineral：0-30 part.The present embodiment adopts tetra- kinds of model phosphorus slags of A, B, C, D, respectively The chemical composition of the phosphorus slag of model is as shown in table 1；The activating agent of specific embodiment and the mass ratio of phosphorus slag, the weight of moisture in phosphorus slag Amount content, activating agent proportioning is as shown in table 2.
Preferably, the calcium oxide content in the carbide slag described in modified active phosphorus slag of the embodiment of the present invention is more than or equal to 65wt%, it is mainly used in forming precipitated hydroxyapatite with phosphate radical in phosphorus slag improvement chemical reaction, is coagulated with shortening cement The knot time；Dioxide-containing silica in described aluminium sulfate slag is 60%-72wt%, and the content of aluminium sesquioxide is 8wt%- 15wt%, is conducive to shortening cement setting time, provides intensity；Calcium oxide in described red mud, alchlor and titanium dioxide Silicon total content is more than 60wt%, K2O or Na2The content of O is 1wt%-3wt%, has hydration activity excitation；Described height Alchlor content in aluminium powder coal ash is more than 35wt%, can make up phosphorus slag aluminium phase content in aquation liquid phase not enough.
Preferably, the carbide slag described in modified active phosphorus slag of the embodiment of the present invention is to prepare the industry that acetylene gas obtain Waste residue；Described aluminium sulfate slag is to prepare the industrial residue that bauxite obtains；Described red mud is to refine aluminium oxide to obtain industrial residue； Described aluminous fly-ash is coal-burning power plant's waste discharge gurry；Described anhydrous calcium sulphoaluminate mineral are sulphoaluminate cement clinker, state sulfur Mineral constituent content in aluminate cement grog is more than or equal to 55wt%, effectively shortens cement setting time it is contemplated that economy Cost factor, thus it is relatively small in activator use ratio.
An alternative embodiment of the invention proposes a kind of preparation method of modified active phosphorus slag, mainly includes the following steps that： Phosphorus slag is dried；By weight, power taking rock ballast 50-70 part, aluminium sulfate slag：0-40 part, red mud：0-40 part, aluminous fly-ash： 0-30, Gypsum Fibrosum：20-30 part, anhydrous calcium sulphoaluminate mineral：0-30 part, mix homogeneously, obtain activator；Phosphorus slag after drying and Described activator is 0.5-1 in mass ratio:10 mix homogeneously, grinding, obtain modified active phosphorus slag.The present embodiment adopt A, B, Tetra- kinds of model phosphorus slags of C, D, the chemical composition of the phosphorus slag of each model is as shown in table 1；The activating agent of specific embodiment and the matter of phosphorus slag Amount ratio, activating agent proportioning is as shown in table 2.
Preferably, in the preparation method of modified active phosphorus slag of the embodiment of the present invention dry phosphorus slag being less than to moisture 2wt%.In specific embodiment phosphorus slag, the weight content of moisture is as shown in table 2.
Preferably, the temperature of the drying described in the preparation method of modified active phosphorus slag of the embodiment of the present invention is 100-200 DEG C, specifically the drying temperature of each embodiment is as shown in table 2.
Preferably, the calcium oxide content in the carbide slag described in the preparation method of modified active phosphorus slag of the embodiment of the present invention More than or equal to 65wt%, for preparing the industrial residue that acetylene gas obtain；Dioxide-containing silica in described aluminium sulfate slag is 60%-72wt%, the content of aluminium sesquioxide is 8wt%-15wt%, for preparing the industrial residue that bauxite obtains；Described Calcium oxide in red mud, alchlor and total silica content are more than 60wt%, K2O or Na2The content of O is 1wt%- 3wt%, obtains industrial residue for refining aluminium oxide；Alchlor content in described aluminous fly-ash is more than 35wt%, is Coal-burning power plant's waste discharge gurry；Described anhydrous calcium sulphoaluminate mineral are sulphoaluminate cement clinker.
An alternative embodiment of the invention proposes a kind of modified active phosphoric slag cement, and its component (by weight percentage) is wrapped Include：
Modified active phosphorus slag of the present invention：30%-50%,
Cement base material:50%-70%；Wherein, cement base material is the cement without modified active phosphorus slag.
That above each group is divided and be 100%.
Preferably, the modified active phosphoric slag cement of the embodiment of the present invention, its presetting period is 1h：30min-6h：30min, Final setting time is 3h-7h：30min；3d rupture strength is 2.2-4.2MPa, and 28d rupture strength is 6.7-8.6MPa；3d pressure resistance Spend for 38.8-53.0MPa, 3d comprcssive strength is 14.8-28.0MPa.
An alternative embodiment of the invention proposes a kind of modified active phosphorus slag concrete, its component (by weight percentage) Including：
Modified active phosphorus slag of the present invention：10%-30%,
Concrete base material:70%-90%；
That above each group is divided and be 100%.
The phosphorus slag chemical composition (percentage by weight/%) of table 1 different model
" Loss " represents loss on ignition；
" Σ " represents the summation of several chemical compositions in prostatitis, the balance of a small amount of other impurities less than 100%.
The raw material composition of table 2 embodiment 1-4 modified active phosphorus slag and preparation parameter
Embodiment 5-11 modified active phosphoric slag cement includes modified active phosphorus slag and the cement of the present invention；Wherein, each enforcement Example modified active phosphoric slag cement component (percentage by weight meter) as shown in table 3, prepares the phosphorus slag model used by modified active phosphorus slag, Activator is all as shown in table 3 with phosphorus slag weight ratio；The group of the activator in embodiment 5-11 is divided into：60 parts of carbide slag, aluminum sulfate 10 parts of slag, 10 parts of red mud, 20 parts of Gypsum Fibrosum.
Comparative example 1-7 is phosphoric slag cement, and includings cement base material and phosphorus slag, this phosphorus slag is not modified activation, phosphorus used The model of slag, comparative example 1-7 phosphoric slag cement component (percentage by weight meter) is as shown in table 4.
The specific surface area of embodiment 5-11 modified active phosphoric slag cement and comparative example 1-7 phosphoric slag cement is 350m2/kg.
Embodiments of the invention are identical with the cement base material used by comparative example, are same cement.
Table 3 5-11 modified active phosphoric slag cement forms
Table 4 comparative example 1-7 phosphoric slag cement forms
Phosphorus slag model Phosphorus slag/% Cement/%
Comparative example 1 A 30 7
Comparative example 2 A 50 50
Comparative example 3 B 30 70
Comparative example 4 B 40 60
Comparative example 5 B 50 50
Comparative example 6 C 50 50
Comparative example 7 D 50 50
By GB/T 17671《Test method for strength of hydraulic cement mortar (ISO method)》And GB/T 1346《Cement normal consistency water Amount, setting time and the stability method of inspection》Method detect the modified active phosphoric slag cement of embodiment 5-11 and comparative example 1-7 The physical property of phosphoric slag cement, test result is as shown in table 5.
Table 5 embodiment 5-11 modified active phosphoric slag cement and the quantitative measurement result of comparative example 1-7 phosphoric slag cement
From table 4 and table 5, the setting time of the modified active phosphoric slag cement of embodiment 5-11 is compared to comparative example 1-7 Phosphoric slag cement substantially shortens setting time, and in cement, modified active phosphorus slag volume is higher, and improved effect is more obvious；Meanwhile, water Mud early stage and later strength also have different degrees of raising.
The components by weight percent of embodiment 12-26 modified active phosphoric slag cement is：Modified active phosphorus slag 50%, cement base material 50%.Wherein, the phosphorus slag model used by modified active phosphorus slag in embodiment 12-26, activator and phosphorus slag weight ratio, activator The weight ratio of each component is all as shown in table 6.
The composition of table 6 embodiment 12-26 modified active phosphoric slag cement
By GB/T 17671《Test method for strength of hydraulic cement mortar (ISO method)》And GB/T 1346《Cement setting time and peace Qualitative reaction method》Method detect embodiment 12-26 modified active phosphoric slag cement physical property, test result such as table 7 Shown.
Table 7 embodiment 12-26 modified active phosphoric slag cement quantitative measurement
From table 7, with the change of activator component proportioning, the physical property of final modified active phosphoric slag cement all has Change in various degree, the comprcssive strength of modified active phosphoric slag cement finally giving and meet cement standard setting time, implement In example 12-26 modified active phosphoric slag cement, the content of modified active phosphorus slag is 50wt%, illustrates that industrial phosphorus slag can prepare water Use in a large number during mud, reach the purpose turning waste into wealth；Meanwhile, the modified active agent of the present invention swashs to reactivity of phosphor slag as shown in Table 7 Send out effect stability.
Embodiment 27
The component (by weight percentage) of the modified active phosphorus slag concrete of the present embodiment is：The changing of 10% embodiment 1 Property activation phosphorus slag, 90% concrete base material.
Embodiment 28
The component (by weight percentage) of the modified active phosphorus slag concrete of the present embodiment is：The changing of 30% embodiment 1 Property activation phosphorus slag, 70% concrete base material.
Comparative example 8
The component (by weight percentage) of the phosphorus slag concrete of this comparative example is：30%A type phosphorus slag, 70% coagulation soil matrix Material, wherein phosphorus slag is without modified active.
Comparative example 9
The component (by weight percentage) of the slag powder concrete of this comparative example is：30% pulverized slag, 70% concrete Base material.
Embodiment 27,28, comparative example 8, the concrete base material as raw material in comparative example 9 prepared by portland cement and , the components by weight percent of embodiment and comparative example all of concrete base material is：370 parts of portland cements, 829 parts of sands, 659 parts 10-20mm stone, 355 parts of 5-10mm stones, 4 parts of additives, 175 parts of water.
By GB/T50082-2009《Standard for test methods of longterm performance and durability of ordinary concrete standard》Contractility is tested Detection method molding 100mm × 100mm × 515mm concrete sample, testing example 27,28 modified active phosphorus slag concrete, Comparative example 8 phosphorus slag concrete, comparative example 9 slag powder concrete and embodiment 22,28, the concrete base material used by comparative example 8,9 Physical property, test result is as shown in table 8.
The quantitative measurement result of each concrete of table 8
7d shrinkage factor 28d shrinkage factor 90d shrinkage factor
Embodiment 27 3.78×10-5 1.80×10-4 3.88×10-4
Embodiment 28 3.69×10-5 1.84×10-4 3.69×10-4
Comparative example 8 6.99×10-5 3.63×10-4 6.48×10-4
Comparative example 9 4.85×10-5 1.98×10-4 5.57×10-4
Concrete base material 3.5×10-5 1.9×10-4 4.47×10-4
As shown in Table 8, embodiment 27,28 modified active phosphorus slag concrete examination body contract with dry rate of each age compare slag powder concrete Contract with dry rate is little, and close with the concrete examination body of neat portland cement preparation, or even 90 days its contract with dry rate compare neat portland cement The concrete examination body of preparation is also little；And the concrete shrinkage of the modified active phosphorus slag of the 30wt% that adulterates is less, it follows that preparation The modified active phosphorus slag of the present invention can be added during concrete in a large number, reach the purpose turning waste into wealth.
The above, be only presently preferred embodiments of the present invention, and not the present invention is made with any pro forma restriction, according to Any simple modification, equivalent variations and modification above example made according to the technical spirit of the present invention, all still falls within this In the range of bright technical scheme.

Claims (10)

1. a kind of modified active phosphorus slag it is characterised in that：It includes:Activating agent and phosphorus slag, the matter of described activating agent and phosphorus slag Amount ratio is 0.5-1:10；Wherein, the moisture in described phosphorus slag is less than the 2% of phosphorus slag weight；
The weight ratio of the component of described activating agent is：
Carbide slag 50-70 part, aluminium sulfate slag：0-40 part, red mud：0-40 part, aluminous fly-ash：0-30, Gypsum Fibrosum：20-30 part, no Water calcium sulfoaluminate minerals：0-30 part.
2. modified active phosphorus slag according to claim 1 is it is characterised in that the calcium oxide content in described carbide slag is big In equal to 65wt%；Dioxide-containing silica in described aluminium sulfate slag is 60%-72wt%, and the content of aluminium sesquioxide is 8wt%-15wt%；Calcium oxide in described red mud, alchlor and total silica content are more than 60wt%, K2O or Na2O Content be 1wt%-3wt%；Alchlor content in described aluminous fly-ash is more than 35wt%.
3. modified active phosphorus slag according to claim 1 is it is characterised in that described carbide slag is to prepare acetylene gas to obtain Industrial residue；Described aluminium sulfate slag is to prepare the industrial residue that bauxite obtains；Described red mud is to refine aluminium oxide to obtain work Industry waste residue；Described aluminous fly-ash is coal-burning power plant's waste discharge gurry；Described anhydrous calcium sulphoaluminate mineral are that sulphate aluminium cement is ripe Material, the mineral constituent content in described sulphoaluminate cement clinker is more than or equal to 55wt%.
4. a kind of preparation method of modified active phosphorus slag it is characterised in that：It comprises the following steps:
Phosphorus slag is dried；By weight, power taking rock ballast 50-70 part, aluminium sulfate slag：0-40 part, red mud：0-40 part, high-alumina fly Coal ash：0-30, Gypsum Fibrosum：20-30 part, anhydrous calcium sulphoaluminate mineral：0-30 part, mix homogeneously, obtain activator；Phosphorus after drying Slag and described activator are 0.5-1 in mass ratio:10 mix homogeneously, grinding, obtain modified active phosphorus slag.
5. the preparation method of modified active phosphorus slag according to claim 4 contains it is characterised in that drying phosphorus slag to moisture Amount is less than 2wt%.
6. the preparation method of modified active phosphorus slag according to claim 4 is it is characterised in that the temperature of described drying is 100-200℃.
7. the preparation method of modified active phosphorus slag according to claim 4 is it is characterised in that oxygen in described carbide slag Change calcium content and be more than or equal to 65wt%, for preparing the industrial residue that acetylene gas obtain；Titanium dioxide in described aluminium sulfate slag Silicone content is 60%-72wt%, and the content of aluminium sesquioxide is 8wt%-15wt%, for preparing the Industry Waste that bauxite obtains Slag；Calcium oxide in described red mud, alchlor and total silica content are more than 60wt%, K2O or Na2The content of O is 1wt%-3wt%, obtains industrial residue for refining aluminium oxide；Alchlor content in described aluminous fly-ash is more than 35wt%, is coal-burning power plant's waste discharge gurry；Described anhydrous calcium sulphoaluminate mineral are sulphoaluminate cement clinker, described aluminium sulfate Mineral constituent content in clinker is more than or equal to 55wt%.
8. a kind of modified active phosphoric slag cement it is characterised in that：Its component (by weight percentage) includes：
Modified active phosphorus slag described in any one of claim 1-3：30%-50%,
Cement base material:50%-70%；
That above each group is divided and be 100%.
9. modified active phosphoric slag cement according to claim 8 is it is characterised in that its presetting period is 1h：30min-6h： 30min, final setting time is 3h-7h：30min；3d rupture strength is 2.2-4.2MPa, and 28d rupture strength is 6.7-8.6MPa； 28d comprcssive strength is 38.8-53.0MPa, and 3d comprcssive strength is 14.8-28.0MPa.
10. a kind of modified active phosphorus slag concrete it is characterised in that：Its component (by weight percentage) includes：
Modified active phosphorus slag described in any one of claim 1-3：10%-30%,
Concrete base material:70%-90%；
That above each group is divided and be 100%.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108751777A (en) * 2018-06-12 2018-11-06 金华市欣生沸石开发有限公司 The warm anti-crack water-proof agent of suppression
CN108821671A (en) * 2018-07-17 2018-11-16 山东大学 A kind of full Industrial Solid Waste high intensity instant foam concrete material and preparation method
CN110937833A (en) * 2019-12-03 2020-03-31 贵州鼎瑞环保科技有限公司 Ardealite baking-free modification treatment method
CN111825403A (en) * 2020-08-01 2020-10-27 中建西部建设贵州有限公司 High-dosage activated phosphorus slag powder roller compacted concrete with low heat insulation and temperature rise and good durability

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108751777A (en) * 2018-06-12 2018-11-06 金华市欣生沸石开发有限公司 The warm anti-crack water-proof agent of suppression
CN108751777B (en) * 2018-06-12 2020-12-29 金华市欣生沸石开发有限公司 Temperature-inhibiting anti-cracking waterproof agent
CN108821671A (en) * 2018-07-17 2018-11-16 山东大学 A kind of full Industrial Solid Waste high intensity instant foam concrete material and preparation method
CN108821671B (en) * 2018-07-17 2020-07-17 山东大学 Full-industrial solid waste high-strength ready-to-use foamed concrete material and preparation method thereof
CN110937833A (en) * 2019-12-03 2020-03-31 贵州鼎瑞环保科技有限公司 Ardealite baking-free modification treatment method
CN111825403A (en) * 2020-08-01 2020-10-27 中建西部建设贵州有限公司 High-dosage activated phosphorus slag powder roller compacted concrete with low heat insulation and temperature rise and good durability

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