CN105693125A - Sulfoaluminate cement heat stabilizer and application method thereof - Google Patents

Sulfoaluminate cement heat stabilizer and application method thereof Download PDF

Info

Publication number
CN105693125A
CN105693125A CN201610074636.XA CN201610074636A CN105693125A CN 105693125 A CN105693125 A CN 105693125A CN 201610074636 A CN201610074636 A CN 201610074636A CN 105693125 A CN105693125 A CN 105693125A
Authority
CN
China
Prior art keywords
heat stabilizer
sulphate aluminium
aluminium cement
agstone
cement heat
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
Application number
CN201610074636.XA
Other languages
Chinese (zh)
Other versions
CN105693125B (en
Inventor
王桂明
包明
陈华军
水中和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Huayi New Material Co., Ltd.
Original Assignee
Wuhan University of Technology WUT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan University of Technology WUT filed Critical Wuhan University of Technology WUT
Priority to CN201610074636.XA priority Critical patent/CN105693125B/en
Publication of CN105693125A publication Critical patent/CN105693125A/en
Application granted granted Critical
Publication of CN105693125B publication Critical patent/CN105693125B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • C04B40/0042—Powdery mixtures
    • 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
    • C04B28/06—Aluminous cements
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention relates to a sulfoaluminate cement heat stabilizer and an application method thereof. The sulfoaluminate cement heat stabilizer is composed of the following components in percentage by mass: 60-90% of regenerated cementing material, 5-20% of limestone flour and 5-20% of quartz powder. The sulfoaluminate cement heat stabilizer implements waste reutilization, changes wastes into valuable substances, saves the resources, and has excellent environment friendliness and favorable ecological benefits.

Description

A kind of sulphate aluminium cement heat stabilizer and using method thereof
Technical field
The invention belongs to building material technical field, relate particularly to a kind of sulphate aluminium cement heat stabilizer and using method thereof。
Background technology
Sulphate aluminium cement is a new cement series, it is referred to as the 3rd series cement, have that early strength height, setting time be short, the feature of high permeability resistant, high frost resistance, rotproofness and low alkalinity, be widely used in winter construction, speedily carry out rescue work in the special engineerings such as repairing, impervious leak stopping。
Compared with Portland cement, the single sulfur type of entringite (AFt), calcium sulphoaluminate (AFm) are the hydrated products that sulphate aluminium cement is main。And more than under 90 DEG C of states, entringite is but that a unstable phase very easily undergoes phase transition, this makes the application in engineering of sulphate aluminium cement cover with shade。When Gypsum Fibrosum is plentiful, under normal temperature condition, AFm can change AFt, and along with the violent solid volume change of 57.27%, the formation of this secondary ettringite will result in cement strength and declines, and serious even causes swelling cracking。At this moment the meeting of penetrating into of moisture worsens the durability of sulphate aluminium cement goods further, causes that sulphate aluminium cement article construction destroys, reduces its serviceability。And in cement concrete actual application, discharge due to the concentration of the heat of hydration and heat radiation often makes cement material be in higher temperature state not in time。Such as, in casting of concrete in mass process, its central temperature is likely to be due to the concentration of the heat of hydration and heat dissipation problem and up to more than 90 DEG C, tans by the sun the building under summer sunlight, and its surface temperature of concrete is also up to more than 70 DEG C。The thermally-stabilised problem of sulphate aluminium cement goods has become its problem extremely general and serious in engineering practice, how to strengthen the heat stability of sulphate aluminium cement, improve concrete volume stability, and then improving concrete crack resistance, it is prevented that concrete cracking is the difficult problem that engineering circles is urgently to be resolved hurrily。
From material angle, it is possible to by mixing fine-ground fly-ash or slag powders in Portland cement concrete (PCC), reduce the heat of hydration, reduce the temperature difference and shrink, improve crack-resistant performance of concrete。But the activity excitation for sulphate aluminium cement, fine-ground fly-ash or slag powders needs sufficiently high alkaline environment, but does not have enough alkaline environments to promote flyash or slag powders reaction in sulphate aluminium cement, does not also have the effect of stable entringite。
But have substantial amounts of old building construction and engineering construction thing to rebuild every year, and produce the building castoff of incredible amount, wherein quite a few is discarded concrete, and it is stacked and takies a large amount of valuable land resource, and regeneration rate is also very low。In fact effective utilization is also lacked for fine aggregate, hydrated product and unhydrated cement in discarded concrete mortar。
Summary of the invention
It is an object of the invention to provide a kind of raising heat-staple stabilizer of sulphate aluminium cement; solve secondary ettringite to generate and cause the sulphate aluminium cement heat stabilizer of the problems such as sulphate aluminium cement concrete product cracking, poor durability to prepare using method; realize refuse reclamation; turn waste into wealth; save resource; preserve the ecological environment so that sulphate aluminium cement large-scale use is possibly realized。
This invention address that the scheme that above-mentioned technical problem adopts is: a kind of sulphate aluminium cement heat stabilizer, its component is regenerative gel material, agstone and silica flour, and the mass fraction of each component is than for regenerative gel material: agstone: silica flour=60%～90%:5%～20%:5%～20%。
By such scheme, described regenerative gel material is to cross 75 μm of sieves after the cement stone grinder separated from broken discarded concrete, obtains specific surface area 300m2The powder body of/kg, then calcines 2～6 hours at 400 DEG C～900 DEG C, is then cooled to room temperature gained。
By such scheme, described agstone specific surface area >=300m2/ kg, clay content < 3%。
By such scheme, described silica flour fineness is 180-250 order。
The using method of described sulphate aluminium cement heat stabilizer, its step is as follows: first weigh corresponding sulphate aluminium cement according to proportioning, sulphate aluminium cement heat stabilizer, aggregate and water, described its component of sulphate aluminium cement heat stabilizer is regenerative gel material, agstone and silica flour, the mass fraction of each component is than for regenerative gel material: agstone: silica flour=60%～90%:5%～20%:5%～20%, by sulphate aluminium cement, dry mixing homogenizing in blender put into by sulphate aluminium cement heat stabilizer and aggregate, then stirring is added water, the volume of described heat stabilizer is the 5%-30% of the quality of sulphate aluminium cement。
Principles of the invention is: control entringite growing amount in sulphate aluminium cement hydrated product by heat stabilizer, utilizes heat stabilizer stablize entringite simultaneously, reduces entringite to list sulfur type hydrated calcium aluminate sulfate (AFm) transformation amount。After regenerative gel material calcination, main catabolite is C2S, CaO and CaCO3。Material through being calcined gained is involved in sulfate cement hydration reaction, plays reactivity, and gain in strength is produced contribution, C2S aquation can improve the later strength of sulphate aluminium cement, and be calcined the partial raw water product not yet decomposed completely and also can play the effect of nucleus, promotes the aquation of new cementitious material system。CaCO in agstone3Restriction calcium vanadium AFt, to the transformation of single aluminium sulfate AFm, is simultaneously generated single carboaluminates (Ca4A12O6CO3·11H2O) to replace single aluminium sulfate。Comparing with single aluminium sulfate, single carboaluminates has bigger insoluble, it is easy to stable existence, silica flour also increases system heat stability and the mobility of aquation system。
The beneficial effects of the present invention is: catabolite C main after utilizing regenerative gel material calcination2S, CaO, participate in sulfate cement hydration reaction, plays reactivity, and sulfate cement gain in strength is produced contribution, it is possible to plays raising sulphate aluminium cement product strength effect。Avoid using the pozzolanic activity materials such as flyash to sulphate aluminium cement system without intensity facilitation。Agstone and silica flour can arrive the effect stablizing entringite crystal formation, and silica flour increases the mobility of aquation system simultaneously。The raw material that heat stabilizer provided by the invention uses is by the concrete debris processed through high-temperature activation and the agstone very easily obtained and silica flour。Achieving refuse reclamation, turn waste into wealth, save resource, environmental friendliness performance is superior, has good ecological benefits。
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but present disclosure is not limited solely to the following examples。
Embodiment 1:
Concrete debris is carried out pretreatment, removes foreign material, waste concrete is broken, screening, obtain the particle diameter particulate matter less than or equal to 4.75；Particulate matter after drying being put into disintegrating machine process, extract micropowder with air shocking type bag dust collection, the micropowder of extraction is crossed 200 mesh sieves, extracting screen underflow, inspection particle diameter is less than 75 μm, and testing its specific surface area is 361m2/ kg, obtains Binder Materials；The granule not being extracted continues to accept pulverizing at drum-type regenerating device, crushes while extract regenerative micro powder, dries material at the temperature lower calcination 4 hours of 600 DEG C, is cooled to room temperature with wind-force subsequently。By regenerative gel material 70%, agstone 15%, three's batch mixer is sufficiently mixed homogenizing, described agstone specific surface area >=300m by the ratio of silica flour 15%2/ kg, < 3%, described silica flour fineness is 180-250 order to clay content, obtains sulphate aluminium cement heat stabilizer。In example, heat stabilizer replaces cement 15% respectively, and 20%, 25%, cement, sulphate aluminium cement heat stabilizer and aggregate are put into dry mixing homogenizing in blender, then adds water stirring。Wherein the ratio of mud of mortar is 0.4, and cement mortar rate is 1:1。Age is that the mortar of 28d experimental performance result after 90 DEG C of heat treatment 24h is as shown in table 1。
Table 1 embodiment the performance test results
Embodiment 2:
Concrete debris is carried out pretreatment, removes foreign material, waste concrete is broken, screening, obtain the particle diameter particulate matter less than or equal to 4.75；Particulate matter after drying being put into disintegrating machine process, extract micropowder with air shocking type bag dust collection, the micropowder of extraction is crossed 200 mesh sieves, extracting screen underflow, inspection particle diameter, less than 75 μm, obtains regenerative gel material, and testing its specific surface area is 387m2/ kg；The granule not being extracted continues to accept pulverizing at drum-type regenerating device, crushes while extract regenerative micro powder, dries material at the temperature lower calcination 4 hours of 600 DEG C, is cooled to room temperature with wind-force subsequently。By regenerative gel material 80%, agstone 10%, three's batch mixer is sufficiently mixed homogenizing, described agstone specific surface area >=300m by the ratio of silica flour 10%2/ kg, < 3%, described silica flour fineness is 180-250 order to clay content, obtains sulphate aluminium cement heat stabilizer。Cement, sulphate aluminium cement heat stabilizer and aggregate are put into dry mixing homogenizing in blender, then adds water stirring。Wherein the ratio of mud of mortar is 0.4, and cement mortar rate is 1:1。Age is that the mortar of 28d experimental performance result after 105 DEG C of heat treatment 24h is as shown in table 2。
Table 2 embodiment the performance test results
Embodiment 3:
Concrete debris is carried out pretreatment, removes foreign material, waste concrete is broken, screening, obtain the particle diameter particulate matter less than or equal to 4.75；Particulate matter after drying being put into disintegrating machine process, extract micropowder with air shocking type bag dust collection, the micropowder of extraction is crossed 200 mesh sieves, extracting screen underflow, inspection particle diameter, less than 75 μm, obtains regenerative gel material；Testing its specific surface area is 441m2/ kg, it does not have the granule being extracted continues to accept pulverizing at drum-type regenerating device, crushes while extract regenerative micro powder, dries material at the temperature lower calcination 4 hours of 600 DEG C, is cooled to room temperature with wind-force subsequently。By regenerative gel material 80%, agstone 10%, three's batch mixer is sufficiently mixed homogenizing, described agstone specific surface area >=300m by the ratio of silica flour 10%2/ kg, < 3%, described silica flour fineness is 180-250 order to clay content, obtains sulphate aluminium cement heat stabilizer。Cement, sulphate aluminium cement heat stabilizer and aggregate are put into dry mixing homogenizing in blender, then adds water stirring。Age is that the concrete test block of 28d experimental performance result after 90 DEG C of heat treatment 24h is as shown in table 3。
Table 3 concrete test block experimental performance result after 90 DEG C of heat treatment 24h

Claims (5)

1. a sulphate aluminium cement heat stabilizer, its component is regenerative gel material, agstone and silica flour, and the mass fraction of each component is than for regenerative gel material: agstone: silica flour=60%～90%:5%～20%:5%～20%。
2. sulphate aluminium cement heat stabilizer according to claim 1, it is characterised in that: described regenerative gel material is to cross 75 μm of sieves after the cement stone grinder separated from broken discarded concrete, obtains specific surface area 300m2The powder body of/kg, then calcines 2～6 hours at 400 DEG C～900 DEG C, is then cooled to room temperature gained。
3. sulphate aluminium cement heat stabilizer according to claim 1, it is characterised in that: described agstone specific surface area >=300m2/ kg, clay content < 3%。
4. sulphate aluminium cement heat stabilizer according to claim 1, it is characterised in that: described silica flour fineness is 180-250 order。
5. the using method of the sulphate aluminium cement heat stabilizer described in claim 1, its step is as follows: first weigh corresponding sulphate aluminium cement according to proportioning, sulphate aluminium cement heat stabilizer, aggregate and water, described its component of sulphate aluminium cement heat stabilizer is regenerative gel material, agstone and silica flour, the mass fraction of each component is than for regenerative gel material: agstone: silica flour=60%～90%:5%～20%:5%～20%, by sulphate aluminium cement, dry mixing homogenizing in blender put into by sulphate aluminium cement heat stabilizer and aggregate, then stirring is added water, the volume of described heat stabilizer is the 5%-30% of the quality of sulphate aluminium cement。
CN201610074636.XA 2016-02-02 2016-02-02 A kind of sulphate aluminium cement heat stabilizer and its application method Active CN105693125B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610074636.XA CN105693125B (en) 2016-02-02 2016-02-02 A kind of sulphate aluminium cement heat stabilizer and its application method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610074636.XA CN105693125B (en) 2016-02-02 2016-02-02 A kind of sulphate aluminium cement heat stabilizer and its application method

Publications (2)

Publication Number Publication Date
CN105693125A true CN105693125A (en) 2016-06-22
CN105693125B CN105693125B (en) 2017-12-05

Family

ID=56229034

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610074636.XA Active CN105693125B (en) 2016-02-02 2016-02-02 A kind of sulphate aluminium cement heat stabilizer and its application method

Country Status (1)

Country Link
CN (1) CN105693125B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108609884A (en) * 2018-06-27 2018-10-02 烟台大学 A kind of entringite stabilizer
CN110776281A (en) * 2019-10-28 2020-02-11 山东大学 Regenerated powder composite mine cemented filling material and preparation method thereof
CN112341127A (en) * 2020-11-24 2021-02-09 广西云燕特种水泥建材有限公司 Sludge curing agent and production method thereof
CN115321937A (en) * 2022-09-14 2022-11-11 昆明理工大学 Laterite-calcium carbonate-cement-based composite material and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101343152A (en) * 2008-08-29 2009-01-14 济南大学 Strontium calcium aluminium sulphate cement
CN101367629A (en) * 2008-09-16 2009-02-18 重庆大学 Manufacture of sulphur aluminate cements with electrolytic manganesium residue and method of manufacturing the same
CN101759422A (en) * 2010-01-21 2010-06-30 同济大学 Desulfurized gypsum base polyphenyl particle heat insulation mortar
CN104261774A (en) * 2014-09-19 2015-01-07 武汉理工大学 Sulphoaluminate cement based material with high strength and low cost

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101343152A (en) * 2008-08-29 2009-01-14 济南大学 Strontium calcium aluminium sulphate cement
CN101367629A (en) * 2008-09-16 2009-02-18 重庆大学 Manufacture of sulphur aluminate cements with electrolytic manganesium residue and method of manufacturing the same
CN101759422A (en) * 2010-01-21 2010-06-30 同济大学 Desulfurized gypsum base polyphenyl particle heat insulation mortar
CN104261774A (en) * 2014-09-19 2015-01-07 武汉理工大学 Sulphoaluminate cement based material with high strength and low cost

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
KAKALI G等: "Hydration products of C3A,C3S and Portland cement in the presence of CaCO3", 《CEM CONCR RES》 *
VOGLIS N等: "Portland-limestone cements.Their properties and hydration compared to those of other composite cements", 《CEM CONCR RES》 *
王达等: "微膨胀水泥砂浆的性能研究", 《四川建筑科学研究》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108609884A (en) * 2018-06-27 2018-10-02 烟台大学 A kind of entringite stabilizer
CN108609884B (en) * 2018-06-27 2021-01-19 烟台大学 Ettringite stabilizer
CN110776281A (en) * 2019-10-28 2020-02-11 山东大学 Regenerated powder composite mine cemented filling material and preparation method thereof
CN112341127A (en) * 2020-11-24 2021-02-09 广西云燕特种水泥建材有限公司 Sludge curing agent and production method thereof
CN115321937A (en) * 2022-09-14 2022-11-11 昆明理工大学 Laterite-calcium carbonate-cement-based composite material and preparation method thereof

Also Published As

Publication number Publication date
CN105693125B (en) 2017-12-05

Similar Documents

Publication Publication Date Title
Zhang et al. Low carbon cementitious materials: Sodium sulfate activated ultra-fine slag/fly ash blends at ambient temperature
WO2019141098A1 (en) High-value comprehensive utilization method for lithium slag
Tan et al. Utilization of lithium slag as an admixture in blended cements: Physico-mechanical and hydration characteristics
Jain Effect of nonpozzolanic and pozzolanic mineral admixtures on the hydration behavior of ordinary Portland cement
CN103787602B (en) A kind of ultra-fine regenerated powder complex geological polymer gel material
CN105776994A (en) Self-compacting concrete prepared from concrete mixing station waste slurry
CN105800971B (en) The complementary cementitious material made of the fine powder in regeneration concrete shattering process
CN106242327B (en) A kind of regenerative micro powder cement mixture and preparation method thereof
CN109095865A (en) A kind of recycled high performance concrete material and preparation method thereof
CN106242349A (en) A kind of granite stone powder complex mineral blending material and preparation method thereof
CN105130220B (en) With discarded concrete and the method for sludge eco-cement and active sand
CN104150794B (en) A kind of preparation method of iron tailings portland cement
CN111875268B (en) Calcined clay, process for producing the same, and limestone calcined clay cement
CN103351105B (en) A kind of alkali-activated carbonatite gelling material and its preparation method
CN102515590B (en) Process for producing sulphoaluminate cement by proportioning for direct slurry of red mud
CN106495581B (en) Grouting material reinforced for road and preparation method thereof
CN102249582B (en) Active bauxite dressing tailing micro-powder, and preparation method thereof
CN108328950B (en) A kind of method that red mud cooperates with other solid wastes to prepare ferrous aluminate cement
Liu et al. Influence of calcined coal-series kaolin fineness on properties of cement paste and mortar
CN105693125A (en) Sulfoaluminate cement heat stabilizer and application method thereof
CN105130221B (en) The method of comprehensive utilization discarded concrete and sludge system ecology clinker
CN108569859A (en) A kind of water proof anti-seepage concrete additive and preparation method thereof with self-repair function
CN106116189A (en) A kind of no first-hand datum lithium slag composite gelled material
CN102503196A (en) Method for preparing cement clinker by using waste concrete
CN101274824B (en) Cement clinker and preparation thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20191128

Address after: 528100 No. 36-2, A District, Datang garden, Sanshui Industrial Park, Foshan, Guangdong

Patentee after: Foshan Huayi New Material Co., Ltd.

Address before: 430070 Hubei Province, Wuhan city Hongshan District Luoshi Road No. 122

Patentee before: Wuhan University of Technology

TR01 Transfer of patent right