CN104529319B - Low-heat micro-expansion complex cement and preparation method thereof - Google Patents
Low-heat micro-expansion complex cement and preparation method thereof Download PDFInfo
- Publication number
- CN104529319B CN104529319B CN201410738455.3A CN201410738455A CN104529319B CN 104529319 B CN104529319 B CN 104529319B CN 201410738455 A CN201410738455 A CN 201410738455A CN 104529319 B CN104529319 B CN 104529319B
- Authority
- CN
- China
- Prior art keywords
- cement
- parts
- expansion
- complex cement
- surface area
- 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.)
- Active
Links
Classifications
-
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Low-heat micro-expansion complex cement and preparation method thereof, MgO expansion agent：18 parts, industrial residue：25 70 parts, 25 70 parts of Portland clinker, 14 parts of Gypsum Fibrosum；MgO expansion agent in dispensing, Portland clinker and Gypsum Fibrosum combined grinding are prepared into magnesium oxide expanding cement, cement specific surface area is not less than 300 m2Then the magnesium oxide expanding cement and industrial residue are configured to complex cement according to proportioning, mix homogeneously by/kg；Or by MgO expansion agent, clinker, Gypsum Fibrosum and industrial residue according to proportion ingredient, mixing, intergrinding, complex cement being prepared, complex cement fineness prepared by the method is tailed over less than 10% for 80 microns of square hole screens, and specific surface area is not less than 300 m2/kg.Expansion can be produced in early stage, expansion can be produced in middle and late stage again, while meeting compensating concrete early stage, the contraction of middle and late stage, prevent the shrinkage cracking of concrete.
Description
Technical field
The invention belongs to building material technical field, and in particular to a kind of low grade fever, microdilatancy complex cement and its preparation side
Method.
Background technology
Concrete is a kind of most popular construction material.Concrete can be because water during hardening produces intensity
The reason such as scatter and disappear of muddy water or moisture outwardly environment produces various contractions, and such as self-constriction, dry shrinkage, temperature drop shrinks etc..
Under constraints, contraction will produce tension, will cause concrete when tension exceedes the ultimate tensile of concrete material
Material cracks, so as to affect the service life and safety of concrete building structures.With the development of China's economic society, basis sets
The demand for applying construction persistently increases, large quantities of great infrastructure construction engineering such as water resources dam, bridge, tunnel, high-speed railways etc.
Or build.Need in these Important Projects using substantial amounts of mass concrete.Temperature drop shrinks and causes concrete material
Cracking be common problem that mass concrete faces, the durability of serious harm xoncrete structure and safety.Prevent weight
The cracking that mass concrete causes because of temperature drop contraction in large-engineering, it is ensured that engineering safety is the great demand of nation-building.
To prevent the cracking of mass concrete, people often take cooling concrete raw material, it is on the rocks mix and stir, embedded cooling
Traditional temperature control measures such as water pipe, to reduce mass concrete temperature rise, reduce temperature drop and shrink.These measures are to large volume coagulation
The anticracking of soil has positive role, but costly, affects construction speed, and tends not to avoid the cracking of concrete completely.
Also research reduces the aquation of mass concrete to reduce cement consumption using high content mineral admixtures such as flyash etc.
Temperature rise.But, mixing a large amount of mineral admixtures substantially reduces the early strength of concrete.
Appropriate extender is mixed in concrete, the receipts of the expansion compensation concrete material produced using extender aquation
Contracting is to prevent one of common technology means of Shrinkage Cracking of Concrete, and the technical operation is simple, and advantage of lower cost, effect are good.
At present, the extender on market mainly has three classes, i.e. calcium sulphoaluminate class, calcium sulphoaluminate-calcium oxide and calcium oxide.Sulfur-bearing aluminum
The extender of sour calcium class is with entringite (3CaOAl2O3·3CaSO4·32H2O) as expansion sources, i.e., extender is in aquation mistake
Entringite is formed in journey and expansion is produced.Such extender hydration swelling is very fast, and expansion is primarily generated at early stage, and to concrete
The later stage temperature drop of the contraction in later stage, particularly mass concrete shrinks but can not effective compensation.Entringite is in high temperature (as greatly
In 80 DEG C) easily decompose dehydration in environment, therefore the extender containing calcium sulphoaluminate class must not be used for long term ambient temperature for 80 DEG C
Engineering above, thus limit its application in mass concrete of the temperature rise higher than 80 DEG C.Further, since entringite
Being formed needs a large amount of water, and such extender is in the relatively low modern high performance concrete of the ratio of mud and is difficult to carry out wet-cured concrete
In expansion effect be also affected.Calcium oxide (CaO) is also commonly used and makees extender, and its aquation generates calcium hydroxide (Ca (OH)2)
When produce volumetric expansion.Calcium oxide expansion agents expansion is rapid, and expansion is occurred mainly with early days, thus the receipts to later concrete
Truncate repays DeGrain.
The MgO prepared under specified conditions produce in hydration process it is early-in-later stage prolonged expansion, can be used for compensation big
The temperature drop of volume concrete shrinks, and preferably solves the problem of Cracking of mass concrete, and can simplify or cancel temperature control measures,
Construction investment is saved, accelerating construction progress, economic results in society are huge.Magnesium oxide (MgO) aquation generates magnesium hydroxide (Mg
(OH)2) when produce volumetric expansion, the extender hydration swelling water requirement is few, can be in not enough mixed of low water-cement ratio or wet curing
Used in solidifying soil.Additionally, dehydration temperaturre height (about 340 DEG C -490 DEG C) of magnesium hydroxide, can be used in mass concrete, mend
The temperature drop for repaying concrete shrinks.The eighties in last century, the high-magnesia cement for water conservancy project dam concrete is developed, in clinker
The free magnesium for containing, as clinker burning temperature is up to 1450 DEG C, the hydration activity of magnesium oxide is low, and reaction is very slow, expansion
The later stage is concentrated mainly on, thus later stage temperature drop is shunk obvious compensating action.But the large volume relatively small for scale
For concrete, its temperature drop shrinks and occurs relatively early, because magnesium oxide can not carry out effective compensation in clinker, especially
It is that compensation effect is worse for occurring in the self-constriction of early stage.On the other hand, due to the problem of cement stability, cement
The content of MgO in clinker can not be more than 5%, thus content of magnesia often occur not enough, and expansion can not be fully compensated receipts
Contracting.Magnesium oxide of the research and development later with different hydration activities, and be used as to mix outward extender use, its consumption and expansion
Performance preferably can be controlled, but its dispersing uniformity in concrete is relatively difficult to ensure card, and increased mixing time.
The content of the invention
The technical problem of solution：The present invention provides a kind of low-heat micro-expansion complex cement and preparation method thereof, and it can be
Early stage produces expansion, can produce expansion in middle and late stage again, while meeting compensating concrete early stage, the contraction of middle and late stage, prevents from mixing
Coagulate the shrinkage cracking of soil.In combination with a large amount of industrial residues, the consumption of clinker is reduced, reduce CO2Discharge, improves early stage strong
Degree.
Technical scheme：A kind of preparation method of low-heat micro-expansion complex cement, following components is matched somebody with somebody by (1) by weight
Material：MgO expansion agent：1-8 parts, industrial residue：25-70 parts, Portland clinker 25-70 parts, Gypsum Fibrosum 1-4 parts；(2) will
MgO expansion agent, Portland clinker and Gypsum Fibrosum combined grinding in dispensing prepares magnesium oxide expanding cement, and cement compares table
Area is not less than 300m2/ kg, then by the magnesium oxide expanding cement and industrial residue according to proportioning, mix homogeneously, is configured to multiple
Cement；Or by MgO expansion agent, clinker, Gypsum Fibrosum and industrial residue according to proportion ingredient, intergrinding, prepare compound
Cement, complex cement fineness prepared by the method are tailed over less than 10% for 80 microns of square hole screens, and specific surface area is not less than 300m2/
kg。
With periclase as key component, content of magnesia is not less than 60wt%, BET- N2 adsorptions to the MgO expansion agent
The specific surface area that method is measured is 5-80m2/ kg, adopts citric acid method to test activity index for 30s-600s.
The industrial residue is made up of at least two in flyash, slag, slag, magnesium slag.
The industrial residue of the substep grinding, the specific surface area of wherein grinding granulated blast-furnace slag, slag and magnesium slag be not low
In 400m2/kg。
Low-heat micro-expansion complex cement obtained by above-mentioned preparation method.
The contraction of the expansion compensation concrete that the present invention is produced using magnesium oxide aquation.Part water is replaced using industrial residue
Mud, reduces cement consumption, so as to reduce hydrated cementitious heat release, reduces the self-constriction produced because of hydrated cementitious.By separate grinding
Magnesium oxide micro-expansion cement and industrial residue, more easily can control the fineness of cement and industrial residue respectively, optimize cement
Match somebody with somebody with waste particle level, improve the hydration efficiency of cement, be conducive to improving early stage hydrated cementitious speed, improve early strength.Together
When mix industrial residue, can give full play to the volcano ash effect of industrial residue, improve complex cement later strength.Additionally, this
Low-heat micro-expansion complex cement can also by by Portland clinker, MgO expansion agent, Gypsum Fibrosum and industrial residue according to
Proportion ingredient, again intergrinding are prepared to certain fineness.The method of this intergrinding can not be to cement granules and Industry Waste
Solid impurity particle fineness is individually controlled, and can only be controlled the fineness of final products microdilatancy complex cement on the whole, may be increased
Plus grinding energy.
In such scheme, different activities, different amounts of MgO expansion agent can be mixed according to actual needs, regulate and control water
Mud speed of expansion and swell increment, meet the demand of compensating concrete contraction.From the high MgO expansion agent of activity, can be in morning
Phase produces more expansion, and from the relatively low MgO expansion agent of activity, then can produce in middle and late stage and more expand.Pass through
Change to component proportions such as industrial residue, MgO expansion agent and clinkers, can prepare with different mechanical properties
With the complex cement of cubic deformation performance.
Beneficial effect：The invention provides a kind of low-heat micro-expansion complex cement and preparation method thereof, to prevent concrete
Shrinkage cracking provides new approach.The expansion character of the complex cement can be produced in early stage rapid, suitable with conveniently regulating and controlling
The expansion compensation concrete early-age shrinkage of amount, can produce appropriate expansion compensation concrete middle and late stage in middle and late stage again and shrink, prevent
The only shrinkage cracking of concrete.Additionally, cement clinker consumption is few in the complex cement, industrial residue consumption is big, and hydration heat is low,
CO2Discharge is few, and early stage mechanical strength develops fast advantage.
Description of the drawings
Fig. 1 is the process chart of low grade fever non-shrinkage cement substep grinding of the present invention.First by clinker, different activities
MgO expansion agent and Gypsum Fibrosum carry out dispensing, then by said mixture intergrinding to specifying fineness, magnesium oxide is obtained swollen
Swollen cement.Then magnesium oxide expanding cement and levigate industrial residue, are carried out dispensing by separate grinding industrial residue, mixing, are matched somebody with somebody
Make complex cement.
Fig. 2 is the process chart of the common mixed grinding of low grade fever non-shrinkage cement of the present invention.Will be clinker, magnesium oxide swollen
Swollen dose, Gypsum Fibrosum and various industrial residues carry out dispensing, intergrinding to regulation fineness, make complex cement.
Fig. 3 is the hot-fluid measurements figure that complex cement is prepared in embodiment 1 and embodiment 2；
Fig. 4 is the hydration heat measurement result figure that complex cement is prepared in embodiment 1 and embodiment 2；
Fig. 5 is that embodiment 1, embodiment 2 and embodiment 3 prepare complex cement, is received using the early stage that ripple tube method is measured certainly
Contracting curve chart；
Fig. 6 is 3 complex cement slurry deformation curve of embodiment 2 and embodiment.
Fig. 7 is embodiment 1,6 compound cement body drying shrinkage deformation curve of embodiment 3 and embodiment.
Specific embodiment
Following examples further illustrate present disclosure, but should not be construed as limiting the invention.Without departing substantially from
In the case of spirit of the invention and essence, the modification made to the inventive method, step or condition and replacement belong to the present invention
Scope.If not specializing, the conventional meanses that technological means used are well known to those skilled in the art in embodiment.
Embodiment 1：
Using the technological process shown in Fig. 1, by 53.1 parts of Portland clinkers, 4.25 parts of MgO expansion agents (according to
Citric acid method test activity index is 50s, and content of magnesia is 87wt%, and specific surface area is 25m2/kg.) and 2.65 parts of Gypsum Fibrosum
The grinding in ball mill, prepares magnesium oxide expanding cement, and cement specific surface area is more than 400m2/kg.Again with the oxidation for preparing
(separate grinding to specific surface area is more than 450m for magnesium expanding cement and 20 parts of slags2/ kg), the mixing of 20 parts of flyash, prepare multiple
Cement.
Embodiment 2：
Using the technological process shown in Fig. 1, by 35.4 parts of Portland clinkers, 2.8 parts of MgO expansion agents (according to lemon
Lemon acid system test activity index is 50s, and content of magnesia is 87wt%, and specific surface area is 25m2/kg.) and 1.8 parts of Gypsum Fibrosum in ball
Grinding in grinding machine, prepares magnesium oxide expanding cement, and cement specific surface area is more than 400m2/kg.It is swollen with the magnesium oxide for preparing again
(separate grinding to specific surface area is more than 450m for swollen cement and 40 parts of slags2/ kg), the mixing of 20 parts of flyash, prepare Compound Water
Mud.
Embodiment 3：
Using the technological process shown in Fig. 1, by 35.4 parts of Portland clinkers, 2.8 parts of MgO expansion agents (according to lemon
Lemon acid system test activity index is 400s, and content of magnesia is 89wt%, and specific surface area is 7.2m2/kg.) and 1.8 parts of Gypsum Fibrosum exist
Grinding in ball mill, prepares magnesium oxide expanding cement, and cement specific surface area is more than 400m2/kg.Again with the magnesium oxide for preparing
(separate grinding to specific surface area is more than 450m for expanding cement and 40 parts of slags2/ kg), the mixing of 20 parts of flyash, prepare compound
Cement.
Embodiment 4：
Using the technological process shown in Fig. 1, by 53.1 parts of Portland clinkers, 4.2 parts of MgO expansion agents (according to lemon
Lemon acid system test activity index is 50s, and content of magnesia is 87wt%, and specific surface area is 25m2/kg.) and 2.7 parts of Gypsum Fibrosum in ball
Grinding in grinding machine, prepares magnesium oxide expanding cement, and cement specific surface area is more than 460m2/kg.It is swollen with the magnesium oxide for preparing again
Swollen cement is mixed with 20 parts of slags, 10 parts of magnesium slags, 10 parts of slags, prepares complex cement.Slag, magnesium slag and the equal Jing of slag are independent
Grinding is more than 450m to specific surface area2/kg。
Embodiment 5：
Using the technological process shown in Fig. 2, by 40 parts of Portland clinkers, 2 parts of MgO expansion agents (according to citric acid
Method test activity index is 50s, and content of magnesia is 87wt%, and specific surface area is 25m2/kg.), 2 parts of Gypsum Fibrosum, 40 parts of magnesium slags,
16 parts of slag grindings in ball mill, prepare complex cement, and complex cement fineness is tailed over less than 5% for 80 microns of square hole screens,
Specific surface area is more than 460m2/kg。
Embodiment 6：
Using the technological process shown in Fig. 1, by 34.1 parts of Portland clinkers, 4.1 parts of MgO expansion agents (according to lemon
Lemon acid system test activity index is 83s, and content of magnesia is 65wt%, and specific surface area is 14m2/kg.) and 1.8 parts of Gypsum Fibrosum in ball
Grinding in grinding machine, prepares magnesium oxide expanding cement, and cement specific surface area is more than 400m2/kg.It is swollen with the magnesium oxide for preparing again
(separate grinding to specific surface area is more than 450m for swollen cement and 40 parts of slags2/ kg), the mixing of 20 parts of flyash, prepare Compound Water
Mud.
Fig. 3, Fig. 4 are the hydration heat measurement result that complex cement is prepared in embodiment 1 and embodiment 2.As seen from the figure, with
Portland cement is compared, and is mixed slag and flyash, is substantially reduced hydrated cementitious rate of heat release and reduce hydration heat amount.
Fig. 5 is that embodiment 2 and embodiment 3 prepare complex cement, adopt ripple tube method (outside diameter of bel size for
28.5mm, length are 440mm) the Early self-shrinkage curve that measures, the ratio of mud is 0.38, measures from cement slurry initial set and starts meter
Calculate.As seen from the figure, compared with Portland cement, the self-constriction of complex cement early stage significantly less than portland cement, especially
It is that its self-constriction in early stage is compensated completely, also in age when the complex cement for mixing activity index for 50s MgO expansion agents
Phase generates the microdilatancy of 200 microstrains when being 110h.Compared with portland cement, oxidation of the activity index for 400s is mixed
The complex cement (embodiment 3) of magnesium extender, self-constriction is significantly reduced, the self-constriction for still having 230 microstrains during 110h.It can be seen that,
MgO expansion agent activity higher (activity index is less), early stage compensation effect are more obvious.
By 3 complex cement of embodiment 2 and embodiment, (ratio of mud the is 0.38) mix that adds water is into 20mm × 20mm × 80mm
Cement slurry, is to conserve 24 hours during 98 ± 2%, temperature is 20 ± 2 DEG C of curing boxes in relative humidity, and the demoulding surveys just long, then
Conserve in being placed on 20 DEG C of water, measure the length of different larval instar slurry test specimen, calculate deflection.Fig. 6 is two kinds of complex cement slurries
Deformation curve.As seen from the figure, complex cement generates expansion, the expansion ratio embodiment 2 that 3 complex cement slurry of embodiment is produced
Complex cement slurry is big.This is as compared with Example 2, in embodiment 3, MgO expansion agent is active relatively low, more polyoxygenated
Magnesium is in the demoulding and measures just long (molding 24 hours) aquation generation expansion afterwards.
By embodiment 1,6 complex cement of embodiment 3 and embodiment, add water (ratio of mud is 0.38) mix, prepared by molding
The cement slurry of 20mm × 20mm × 80mm, is 98 ± 2% in relative humidity, and temperature is little for maintenance 24 in 20 ± 2 DEG C of curing boxes
When, the demoulding surveys just long, conserves, measurement during test specimen is placed on 25 ± 2 DEG C, climatic chamber of the relative humidity for 60 ± 5% then
The length of different larval instar slurry test specimen, calculates deflection.Fig. 7 is embodiment 1,6 compound cement soma of embodiment 3 and embodiment
Dry contraction distortion curve.As seen from the figure, compared with Portland cement paste, embodiment 1,6 complex cement of embodiment 3 and embodiment
The dry shrinkage amount of slurry is substantially reduced, and particularly drying shrinkage value of the 1 complex cement slurry of embodiment at 168 days is close to
Zero.This is mainly due to MgO expansion agent reaction and produces expansion, compensate for the dry shrinkage of test specimen, meanwhile, in complex cement
Various industrial waste residues instead of clinker, reduce cement consumption, it helps reduce the dry shrinkage of test specimen.
Complex cement prepared by various embodiments above, with reference to cement mortar strength test standard, weigh a cement, three
Part normal sand and 0.5 part of water, stir, molding 40mm × 40mm × 160mm mortar specimens, and test compound cement is respectively 3
My god, anti-folding, the comprcssive strength of 28 days and 90 days.Cement mortar strength result of the test of the table 1 for various embodiments above complex cement.
Table 1
As can be seen from the table, 3 days comprcssive strength of the various embodiments described above complex cement is all higher than or equal to 15MPa, 28 days
Comprcssive strength is all higher than or equal to 40MPa.Complex cement 28 days wherein in embodiment 2, embodiment 3, embodiment 4 and embodiment 6
28 day intensity requirements of the intensity higher than 42.5 portland cements.Particularly, at 90 days, the resistance to compression of each complex cement and anti-folding are strong
Degree has significantly increase, and this is mainly due to the secondary pozzolanic reaction of industrial residue.
Claims (2)
1. a kind of preparation method of low-heat micro-expansion complex cement, it is characterised in that：By 53.1 parts of Portland clinkers, 4.2
Part MgO expansion agent and 2.7 parts of Gypsum Fibrosum grindings in ball mill, the MgO expansion agent is according to citric acid method test activity
Index is 50s, and content of magnesia is 87 wt.%, and specific surface area is 25 m2/ kg, prepares magnesium oxide expanding cement, cement ratio
Surface area is more than 460m2/kg；Mixed with the magnesium oxide expanding cement for preparing and 20 parts of slags, 10 parts of magnesium slags, 10 parts of slags again
Close, prepare complex cement；The equal Jing separate grindings of slag, magnesium slag and slag are more than 450 m to specific surface area2/kg。
2. low-heat micro-expansion complex cement obtained in preparation method described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738455.3A CN104529319B (en) | 2014-12-05 | 2014-12-05 | Low-heat micro-expansion complex cement and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738455.3A CN104529319B (en) | 2014-12-05 | 2014-12-05 | Low-heat micro-expansion complex cement and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104529319A CN104529319A (en) | 2015-04-22 |
| CN104529319B true CN104529319B (en) | 2017-04-05 |
Family
ID=52845008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410738455.3A Active CN104529319B (en) | 2014-12-05 | 2014-12-05 | Low-heat micro-expansion complex cement and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104529319B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295876B (en) * | 2015-10-12 | 2019-01-08 | 嘉华特种水泥股份有限公司 | A kind of microdilatancy oil-well cement |
| CN105781568A (en) * | 2016-03-21 | 2016-07-20 | 浙江温州沈海高速公路有限公司 | Shrinkage-compensating high-resistance tunnel structure |
| CN106946479A (en) * | 2017-04-06 | 2017-07-14 | 绵阳莫仕科技有限公司 | A kind of humble thermal expansion portland cement |
| CN109437637B (en) * | 2018-12-12 | 2021-06-22 | 盐城市国泰混凝土有限公司 | Steel slag cement expanding agent and silicate cement doped with same |
| CN109553320B (en) * | 2018-12-12 | 2021-07-27 | 盐城市国泰混凝土有限公司 | Nickel slag cement expanding agent and silicate cement doped with same |
| CN109665730A (en) * | 2018-12-19 | 2019-04-23 | 龚家玉 | A kind of anticracking cement and preparation method thereof |
| CN112608046A (en) * | 2020-11-21 | 2021-04-06 | 河北京兰水泥有限公司 | Coal-fired furnace slag composite mixed material and preparation method and application thereof |
| CN115259783A (en) * | 2022-06-28 | 2022-11-01 | 江苏苏博特新材料股份有限公司 | High-magnesium low-heat anti-cracking cement for hydraulic large-volume concrete and preparation method thereof |
| CN117003501A (en) * | 2023-05-09 | 2023-11-07 | 河北工业大学 | Ultralow-carbon magnesia slag cement and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173700A (en) * | 2010-12-31 | 2011-09-07 | 四川嘉华企业（集团）股份有限公司 | Minimum inflation low heat silicate cement |
| CN102515583A (en) * | 2011-11-28 | 2012-06-27 | 峨眉山强华特种水泥有限责任公司 | Method for producing low heat expansive cement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100912385B1 (en) * | 2007-11-23 | 2009-08-19 | 쌍용양회공업(주) | Low-heat cement compositions for super high strength concrete |
-
2014
- 2014-12-05 CN CN201410738455.3A patent/CN104529319B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173700A (en) * | 2010-12-31 | 2011-09-07 | 四川嘉华企业（集团）股份有限公司 | Minimum inflation low heat silicate cement |
| CN102515583A (en) * | 2011-11-28 | 2012-06-27 | 峨眉山强华特种水泥有限责任公司 | Method for producing low heat expansive cement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104529319A (en) | 2015-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104529319B (en) | Low-heat micro-expansion complex cement and preparation method thereof | |
| CN106747128B (en) | A kind of big fluidised form High Strength Non-shrinking Filling Material and preparation method thereof | |
| CN113416013B (en) | High-performance concrete crack resistance agent and preparation method thereof | |
| CN105801017B (en) | Room temperature maintaining Reactive Powder Concrete and preparation method thereof | |
| CN108558303A (en) | A kind of regeneration concrete bulk and its production method | |
| CN110734257A (en) | Preparation method of high impervious concrete | |
| CN105347768B (en) | Slip casing by pressure mould land plaster | |
| CN103342491A (en) | Iron tailing-based complex mineral admixture and preparation process thereof | |
| CN104909596B (en) | High efficiency composite expanding agent for high-strength self-stressing concrete filled steel tube and preparation method thereof | |
| CN111116159B (en) | Phosphogypsum steel pipe concrete and preparation method thereof | |
| Quang | Effect of quartz powder and mineral admixtures on the properties of high-performance concrete | |
| CN109095802B (en) | Expansive agent for concrete, concrete and preparation method thereof | |
| CN107021698A (en) | A kind of grinding coagulation soil and preparation method thereof | |
| CN109665773A (en) | A kind of clinker replaces the C80 high-strength concrete of fine aggregate | |
| CN110451840B (en) | Composite type compacting agent | |
| Yuvaraj et al. | Predicting the mechanical strength of coal pond ash based geopolymer concrete using linear regression method | |
| CN111268988A (en) | High-water-resistance calcination-free phosphogypsum-based slope building block material and preparation thereof | |
| CN109437769A (en) | A kind of C30P10 subway concrete and preparation method thereof | |
| CN114014568B (en) | Low-alkali cement special for railway and bridge construction and preparation method thereof | |
| CN108863264A (en) | A kind of building latex material and preparation method | |
| CN109867456B (en) | Application of magnesium sulfate, portland cement containing magnesium sulfate, preparation method and application thereof | |
| Zhang et al. | Efficient utilization of waste shield slurry and CDW fines to prepare eco-friendly controlled low-strength material | |
| CN114213045A (en) | Phosphogypsum-based cement based on industrial waste and preparation method thereof | |
| CN110183183A (en) | A kind of coarse granule phosphorus ore slag high-tenacity fiber concrete and preparation method | |
| JPH0676235B2 (en) | Hydraulic cement composition |
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 |