CN1931776A - High activity mixture slurry with several mineral components and its prepn process - Google Patents

High activity mixture slurry with several mineral components and its prepn process Download PDF

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Publication number
CN1931776A
CN1931776A CNA2006101247257A CN200610124725A CN1931776A CN 1931776 A CN1931776 A CN 1931776A CN A2006101247257 A CNA2006101247257 A CN A2006101247257A CN 200610124725 A CN200610124725 A CN 200610124725A CN 1931776 A CN1931776 A CN 1931776A
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wet
content
coal ash
high activity
activator
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CN100386279C (en
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马保国
张美香
张武权
罗忠涛
鄢佳佳
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Wuhan University of Science and Engineering WUSE
Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • 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

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Abstract

The present invention relates to one kind of high activity mixture slurry with several mineral components and its preparation process. The high activity mixture slurry is prepared with waste cement slurry as cementing component 40-60 weight portions, wet fly ash accounting in solid 40-60 weight portions, modifier 1-5 weight portions and water 80-100 weight portions, and through wet grinding. The modifier consists of reinforcing agent 10-30 wt%, surface modifier 20-40 wt% and activator 30-50 wt%. The present invention has two kinds of waste utilized and possesses the features of simple production process, low cost, high activity, capacity of compounding high quality concrete, etc.

Description

High activity mixture slurry with several mineral components and preparation method thereof
Technical field
The invention belongs to the material of construction class, be specifically related to a kind of high activity mixture slurry with several mineral components and preparation method thereof.
Background technology
Along with the Chinese society development, the trend pickup of urban renewal and building industry, the waste discharge amount is increasing gradually, and particularly water ratio height, active low trade waste are difficult to be recycled, for example discarded cement slurry, wet-discharged coal ash etc.The waste that discarded cement slurry produces when mainly being cleaning concrete stirring transportation equipment, according to statistics, the annual concrete usage quantity of China is about 2,000,000,000 m 3, about discarded about 5,000 ten thousand t of cement slurry quantity discharged; The technology of gathering dust of flyash mainly contains the row of doing and 2 kinds of wet rows, and the dried hygroscopic row or the hygroscopic row's that wets method is generally taked for the ease of storing in most of fuel-burning power plant, and China's flyash is stored up semi-invariant and reached more than 13 hundred million tons so far, takes up an area of more than 50 ten thousand mu.The treatment process of this type of waste is to transport to the suburb to fill out flat gully of ditch or accumulation arbitrarily mostly, promptly needing to take a large amount of vacant lot deposits, severe contamination the physical environment that people depend on for existence again, becomes big public hazards in city, and the environmental problem of Yin Faing is very outstanding thus.
Waste discharge is inevitable on the one hand, and the contradiction of concrete on the other hand Sustainable development and resource supply and demand becomes increasingly conspicuous, and has become the focus of material supplier author's concern about the problem of the trade waste that is recycled.At present, utilize the research of wet-discharged coal ash to have a large amount of reports: to be mainly used in preparation cement mixture, concrete admixture, the water-fast less demanding basic infilling work of part etc., but to have problems such as the wet-discharged coal ash utilization ratio is low, energy charge height, quality of item difference; But do not see the systematic study report so far about the technical study of the discarded cement slurry of efficient utilization.
Summary of the invention
The object of the present invention is to provide a kind of low cost, the useless rate of usury, highly active high activity mixture slurry with several mineral components and preparation method thereof.
To achieve these goals, technical scheme of the present invention is: a kind of high activity mixture slurry with several mineral components, it is characterized in that it is mainly ground through wet-milling by discarded cement slurry mesostroma bonding component, wet-discharged coal ash, properties-correcting agent and water forms, and the shared mass fraction of each component is: matrix cementing component solid content 40-60, wet-discharged coal ash solid content 40-60, properties-correcting agent 1-5, water 80-100;
Described properties-correcting agent is made up of toughener, surface-modifying agent and activator, and toughener, surface-modifying agent and activator respectively account for the properties-correcting agent mass percent and be: toughener 10-30, surface-modifying agent 20-40, activator 30-50.
Described discarded cement slurry water ratio 30-40%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, sand factor≤10%; Blain specific surface is 300-400m 2/ Kg.
Described wet-discharged coal ash water ratio 25-35%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, carbon content≤12%; Blain specific surface is 350-400m 2/ Kg.
Described toughener is Na 2CO 3Or trolamine (TEA) etc.; Described surface-modifying agent is poly carboxylic acid series water reducer or efficient naphthalene water reducer; Described activator is Na 2SiO 4Or Na 2SO 4Deng.
The preparation method of above-mentioned a kind of high activity mixture slurry with several mineral components is characterized in that it comprises the steps:
1) raw material is chosen: a. chooses discarded cement slurry, measures discarded actual water ratio of cement slurry and sand factor, by effective screening wherein sand, stone is separated, and the ageing of gained matrix cementing component is standby; Described discarded cement slurry water ratio 30-40%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, sand factor≤10%; Blain specific surface is 300-400m 2/ Kg;
B. choose wet-discharged coal ash, measure actual water ratio of wet-discharged coal ash and carbon content thereof, ageing is standby; Described wet-discharged coal ash water ratio 25-35%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, carbon content≤12%; Blain specific surface is 350-400m 2/ Kg;
2) properties-correcting agent preparation: respectively accounting for the properties-correcting agent mass percent by toughener, surface-modifying agent and activator is: toughener 10-30, surface-modifying agent 20-40, activator 30-50 choose toughener, surface-modifying agent and activator mix and form, and be standby;
3) respectively forming shared mass fraction by discarded cement slurry mesostroma bonding component solid content, wet-discharged coal ash solid content, properties-correcting agent and water is: matrix cementing component solid content 40-60, wet-discharged coal ash solid content 40-60, properties-correcting agent 1-5, water 80-100, mixing grinds 5-15min through wet-milling, gets product.
Mainly acting as of each component of high activity mixture slurry with several mineral components of the present invention:
Discarded cement slurry: main component is the unhydrated cement clinker of hydrated calcium silicate, drated calcium aluminate, calcium hydroxide, ettringite and part, and its calcium, silicone content are higher.Under mechanical wet-milling effect, hardened cement paste is by refinement, and wherein the outside hydration layer of aquation particle is not stripped from, and can bring into play hydration activity again; Hydrated calcium silicate, drated calcium aluminate are in the steady state in boundary under mechanical force, have once more the spontaneity of aquation.
Wet-discharged coal ash: owing to itself contain the silicon oxide and the aluminum oxide of high level, adopting under physics and the chemi-excitation acting in conjunction, having crystal such as hydrated product hydrated calcium silicate and ettringite to generate.
Toughener: select Na for use 2CO 3, trolamine (TEA) etc.Flyash activity be can excite on the one hand, system early strength and early stage extent of hydration are used to improve; The grinding aid effect is arranged on the other hand, can improve wet-milling efficient and effect.
Surface-modifying agent: select polycarboxylic acid series or efficient naphthalene water reducer etc. for use.Be used to improve the slip physicals, comprise grinding aid, slip flowability, stability and dispersiveness etc.
Activator: select Na for use 2SiO 4Or Na 2SO 4Excite Deng being used for flyash activity, improve the extent of hydration of slip.
High activity mixture slurry with several mineral components activity excitation Analysis on Mechanism:
Calcium, silicone content height in the discarded cement slurry, and silicon, aluminium content height in the wet-discharged coal ash, Calcium of intensifiens content is on the low side, and the wet-discharged coal ash that is mixed into of the two provides aquation to send out seasonable necessary calcium.Under mechanical wet-milling effect, hardened cement paste is by refinement, and wherein the outside hydration layer of aquation particle is not stripped from, and can continue to bring into play hydration activity again; Hydrated calcium silicate, drated calcium aluminate are in the steady state in boundary under mechanical force, have once more the spontaneity of aquation; In wet-milling and put procedure, the stripping of flyash metal ion and Si-O bond rupture, the flyash particle surface can form the high silicon fiml of one deck porous, makes the polymerization degree of its particle surface reduce, and helps accelerating the secondary hydration reaction of flyash.
The present invention has following beneficial effect: 1, the dual hydration reaction that helps promoting discarded cement slurry and wet-discharged coal ash that excites of physics and chemistry, excite its early activity, and have high reactivity, can be applied in the concrete mixing production by big volume;
2, obviously improve the serviceability of fresh concrete, effectively control the fresh concrete slump through time loss; 3, can utilize discarded cement slurry and wet-discharged coal ash in a large number, sharp useless rate height, production technique is simple, and is with low cost.The present invention will discard cement slurry and wet-discharged coal ash and mix through wet-milling, be mixed with the mineral admixture slip, be used for place of cement preparation commerical ready-mixed concrete, can reduce cost, and reduce disposable utilization of resources amount, again recycling solid waste; Can solve the reality that a large amount of at present discarded cement slurries and wet-discharged coal ash can't fully be used well, significantly reduce the pollution of industrial waste, significant social economy and environmental benefit are arranged environment.
Description of drawings
Fig. 1 is preparation flow figure of the present invention
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples, embodiment should not regard limitation of the invention as.
Embodiment 1: as shown in Figure 1, a kind of high activity mixture slurry with several mineral components preparation method, it comprises the steps:
1) raw material is chosen: a. chooses discarded cement slurry, measures discarded actual water ratio of cement slurry and sand factor, by effective screening wherein sand, stone is separated, and the ageing of gained matrix cementing component is standby; Described discarded cement slurry water ratio 30-40%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, sand factor≤10%; Blain specific surface is 300-400m 2/ Kg;
B. choose wet-discharged coal ash, measure actual water ratio of wet-discharged coal ash and carbon content thereof, ageing is standby; Described wet-discharged coal ash water ratio 25-35%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, carbon content≤12%; Blain specific surface is 350-400m 2/ Kg;
2) properties-correcting agent preparation: choose toughener, surface-modifying agent and activator mix by table 1 and form, standby;
3) choose discarded cement slurry mesostroma bonding component solid content, wet-discharged coal ash solid content, properties-correcting agent and water by the proportioning of table 1; Mixing grinds 5-15min through wet-milling, gets product.
A kind of high activity mixture slurry with several mineral components proportioning sees Table 1.
Wet-milling proportioning/the mass fraction of table 1 high activity mixture slurry with several mineral components
Numbering The matrix cementing component solid content The wet-discharged coal ash solid content Water Toughener kind and volume Surface-modifying agent kind/volume Activator species/volume The wet-milling time (min)
a 40 60 80 Na 2CO 3/0.2 FDN-1/0.5 Na 2SO 4/0.5 5
b 50 50 85 TEA/0.36 Poly carboxylic acid/0.8 Na 2SiO 4/1.2 10
c 60 40 90 Na 2CO 3/0.9 FDN-1/1 Na 2SiO 4/1.2 15
The high activity mixture slurry with several mineral components performance sees Table 2.
Table 2 high activity mixture slurry with several mineral components performance index
Numbering The performance test project
Different time sinkability (being initially 300ml) Static 30s (T 30s) Final bleed rate Final volume (ml) Specific surface area (m 2/Kg)
0.5 1 2 3 5 7 10 24
a 296 290 280 274 272 268 265 265 20.45 11.7％ 300 440.30
b 295 292 281 273 272 269 266 266 19.20 11.3％ 300 520.10
c 294 288 278 270 268 266 265 264 19.05 12.0％ 300 590.60
Proportioning is closed in clean slurry experiment and Mechanics Performance Testing the results are shown in Table 3.
Proportioning and Mechanics Performance Testing are closed in the clean slurry experiment of table 3
Numbering Cement The slip solid content W/C Mechanics Performance Testing (MPa)
3d 7d 28d
0 1 - 0.4 37.1 49.03 67.3
A1 0.8 0.2/a 30.6 42.5 61.2
A2 0.8 0.2/b 33.8 45.5 63.5
A3 0.8 0.2/c 31.2 43.6 62.4
A4 0.7 0.3/b 31.3 42.8 59.2
As shown in table 2, made admixture slurry viscosity is low, and flowing property is good; Can make the slip homogenizing by whipping appts, reduce its bleed rate, satisfy service requirements.As shown in table 3, test specimen A1, A2, A3 be admixture 20% slip solid content a, b, c respectively, and its each age strength can satisfy the industrial production demand all near plain cement test specimen 0, and each age strength of test specimen A2 is higher relatively; Test specimen A4 is admixture 30% slip solid content b, and its each age strength is lower than A2, but also can satisfy industrial requirement.
Embodiment 2:
A kind of preparation method of high-activity mineral blending material slip, it comprises the steps:
1) raw material is chosen: a. chooses discarded cement slurry, measures discarded actual water ratio of cement slurry and sand factor, by effective screening wherein sand, stone is separated, and the ageing of gained matrix cementing component is standby; Described discarded cement slurry water ratio 30-40%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, sand factor≤10%; Blain specific surface is 300-400m 2/ Kg;
B. choose wet-discharged coal ash, measure actual water ratio of wet-discharged coal ash and carbon content thereof, ageing is standby; Described wet-discharged coal ash water ratio 25-35%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, carbon content≤12%; Blain specific surface is 350-400m 2/ Kg;
2) properties-correcting agent preparation: respectively accounting for the properties-correcting agent mass percent by toughener, surface-modifying agent and activator is: toughener 15, surface-modifying agent 35, activator 50 are chosen toughener, surface-modifying agent and activator mix and formed, and be standby; Described toughener is a trolamine, and described surface-modifying agent is a poly carboxylic acid series water reducer; Described activator is a water glass;
3) respectively forming shared mass fraction by matrix cementing component solid content, wet-discharged coal ash solid content, water and properties-correcting agent is: matrix cementing component solid content 50, properties-correcting agent 50, and water 85, properties-correcting agent 2.4 mixing grind 10min through wet-milling, get product.
Embodiment 3:
A kind of preparation method of high-activity admixture slurry made of wet fly-ash, it comprises the steps:
1) raw material is chosen: a. chooses discarded cement slurry, measures discarded actual water ratio of cement slurry and sand factor, by effective screening wherein sand, stone is separated, and the ageing of gained matrix cementing component is standby; Described discarded cement slurry water ratio 30-40%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, sand factor≤10%; Blain specific surface is 300-400m 2/ Kg;
B. choose wet-discharged coal ash, measure actual water ratio of wet-discharged coal ash and carbon content thereof, ageing is standby; Described wet-discharged coal ash water ratio 25-35%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, carbon content≤12%; Blain specific surface is 350-400m 2/ Kg;
2) properties-correcting agent preparation: respectively accounting for the properties-correcting agent mass percent by toughener, surface-modifying agent and activator is: toughener 29, surface-modifying agent 35, activator 36 are chosen toughener, surface-modifying agent and activator mix and formed, and be standby; Described toughener is Na 2CO 3, described surface-modifying agent is efficient naphthalene water reducer; Described activator is a water glass;
3) respectively forming shared mass fraction by matrix cementing component solid content, wet-discharged coal ash solid content, water and properties-correcting agent is: matrix cementing component solid content 60, wet-discharged coal ash solid content 40, water 90, properties-correcting agent 1, mix grinding 15min through wet-milling, and get product.
Embodiment 4:
A kind of preparation method of high activity mixture slurry with several mineral components, it comprises the steps:
1) raw material is chosen: a. chooses discarded cement slurry, measures discarded actual water ratio of cement slurry and sand factor, by effective screening wherein sand, stone is separated, and the ageing of gained matrix cementing component is standby; Described discarded cement slurry water ratio 30-40%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, sand factor≤10%; Blain specific surface is 300-400m 2/ Kg;
B. choose wet-discharged coal ash, measure actual water ratio of wet-discharged coal ash and carbon content thereof, ageing is standby; Described wet-discharged coal ash water ratio 25-35%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, carbon content≤12%; Blain specific surface is 350-400m 2/ Kg;
2) properties-correcting agent preparation: respectively accounting for the properties-correcting agent mass percent by toughener, surface-modifying agent and activator is: toughener 10, surface-modifying agent 40, activator 50 are chosen toughener, surface-modifying agent and activator mix and formed, and be standby; Described toughener is Na 2CO 3, described surface-modifying agent is a naphthalene water reducer; Described activator is a sodium sulfate;
3) respectively forming shared mass fraction by discarded cement slurry mesostroma bonding component solid content, wet-discharged coal ash solid content, properties-correcting agent and water is: matrix cementing component solid content 40, wet-discharged coal ash solid content 40, properties-correcting agent 5, water 100, mixing grinds 5min through wet-milling, gets product.
Embodiment 5:
A kind of preparation method of high activity mixture slurry with several mineral components, it comprises the steps:
1) raw material is chosen: a. chooses discarded cement slurry, measures discarded actual water ratio of cement slurry and sand factor, by effective screening wherein sand, stone is separated, and the ageing of gained matrix cementing component is standby; Described discarded cement slurry water ratio 30-40%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, sand factor≤10%; Blain specific surface is 300-400m 2/ Kg;
B. choose wet-discharged coal ash, measure actual water ratio of wet-discharged coal ash and carbon content thereof, ageing is standby; Described wet-discharged coal ash water ratio 25-35%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, carbon content≤12%; Blain specific surface is 350-400m 2/ Kg;
2) properties-correcting agent preparation: respectively accounting for the properties-correcting agent mass percent by toughener, surface-modifying agent and activator is: toughener 30, surface-modifying agent 40, activator 30 are chosen toughener, surface-modifying agent and activator mix and formed, and be standby; Described toughener is Na 2CO 3, described surface-modifying agent is a naphthalene water reducer; Described activator is a sodium sulfate;
3) respectively forming shared mass fraction by discarded cement slurry mesostroma bonding component solid content, wet-discharged coal ash solid content, properties-correcting agent and water is: matrix cementing component solid content 60, wet-discharged coal ash solid content 60, properties-correcting agent 5, water 80, mixing grinds 15min through wet-milling, gets product.
The bound value and the interval value of discarded cement slurry mesostroma bonding component of the present invention, wet-discharged coal ash, properties-correcting agent and water raw material can both be realized the present invention, the bound value and the interval value of the toughener of properties-correcting agent, surface-modifying agent, activator can both be realized the present invention, just do not enumerate embodiment one by one at this.

Claims (8)

1. high activity mixture slurry with several mineral components, it is characterized in that it is mainly ground through wet-milling by discarded cement slurry mesostroma bonding component, wet-discharged coal ash, properties-correcting agent and water forms, and the shared mass fraction of each component is: matrix cementing component solid content 40-60, wet-discharged coal ash solid content 40-60, properties-correcting agent 1-5, water 80-100;
Described properties-correcting agent is made up of toughener, surface-modifying agent and activator, and toughener, surface-modifying agent and activator respectively account for the properties-correcting agent mass percent and be: toughener 10-30, surface-modifying agent 20-40, activator 30-50.
2. a kind of high activity mixture slurry with several mineral components according to claim 1 is characterized in that: described discarded cement slurry water ratio 30-40%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, sand factor≤10%; Blain specific surface is 300-400m 2/ Kg.
3. a kind of high activity mixture slurry with several mineral components according to claim 1 is characterized in that: described wet-discharged coal ash water ratio 25-35%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, carbon content≤12%; Blain specific surface is 350-400m 2/ Kg.
4. a kind of high activity mixture slurry with several mineral components according to claim 1 is characterized in that: described toughener is Na 2CO 3Or trolamine.
5. a kind of high activity mixture slurry with several mineral components according to claim 1 is characterized in that: described surface-modifying agent is poly carboxylic acid series water reducer or efficient naphthalene water reducer.
6. a kind of high activity mixture slurry with several mineral components according to claim 1 is characterized in that: described activator is Na 2SiO 4Or Na 2SO 4
7. the preparation method of a kind of high activity mixture slurry with several mineral components as claimed in claim 1 is characterized in that it comprises the steps:
1) raw material is chosen: a. chooses discarded cement slurry, measures discarded actual water ratio of cement slurry and sand factor, by effective screening wherein sand, stone is separated, and the ageing of gained matrix cementing component is standby; Described discarded cement slurry water ratio 30-40%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, sand factor≤10%; Blain specific surface is 300-400m 2/ Kg;
B. choose wet-discharged coal ash, measure actual water ratio of wet-discharged coal ash and carbon content thereof, ageing is standby; Described wet-discharged coal ash water ratio 25-35%, free calcium oxide content≤2.5%, sulfur trioxide content≤3%, carbon content≤12%; Blain specific surface is 350-400m 2/ Kg;
2) properties-correcting agent preparation: respectively accounting for the properties-correcting agent mass percent by toughener, surface-modifying agent and activator is: toughener 10-30, surface-modifying agent 20-40, activator 30-50 choose toughener, surface-modifying agent and activator mix and form, and be standby;
3) respectively forming shared mass fraction by discarded cement slurry mesostroma bonding component solid content, wet-discharged coal ash solid content, properties-correcting agent and water is: matrix cementing component solid content 40-60, wet-discharged coal ash solid content 40-60, properties-correcting agent 1-5, water 80-100, mixing grinds 5-15min through wet-milling, gets product.
8. the preparation method of a kind of high activity mixture slurry with several mineral components according to claim 7, it is characterized in that: described toughener is Na 2CO 3Or trolamine; Described surface-modifying agent is poly carboxylic acid series water reducer or efficient naphthalene water reducer; Described activator is Na 2SiO 4Or Na 2SO 4
CNB2006101247257A 2006-10-10 2006-10-10 High activity mixture slurry with several mineral components and its prepn process Expired - Fee Related CN100386279C (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104003640A (en) * 2014-05-30 2014-08-27 山东众森科技股份有限公司 Special-purpose liquid activator for mineral admixture and preparation method of liquid activator
CN105347713A (en) * 2015-11-12 2016-02-24 江门市中建科技开发有限公司 Cement concrete micro-expansion anti-cracking mineral admixture and preparation method thereof
CN109053065A (en) * 2018-07-13 2018-12-21 中建西部建设贵州有限公司 A kind of flyash mixed mixing and preparation method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1197813C (en) * 2002-02-07 2005-04-20 大庆油田建设设计研究院 Sludge consolidating agent
KR20040065100A (en) * 2003-01-15 2004-07-21 인선이엔티 주식회사 Manufacturing Method of Recycled Aggregate Concrete
CN100427424C (en) * 2005-01-19 2008-10-22 南京都市废弃物综合利用开发有限公司 Reclaimed concrete aggregate two-ash broken stones

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104003640A (en) * 2014-05-30 2014-08-27 山东众森科技股份有限公司 Special-purpose liquid activator for mineral admixture and preparation method of liquid activator
CN105347713A (en) * 2015-11-12 2016-02-24 江门市中建科技开发有限公司 Cement concrete micro-expansion anti-cracking mineral admixture and preparation method thereof
CN109053065A (en) * 2018-07-13 2018-12-21 中建西部建设贵州有限公司 A kind of flyash mixed mixing and preparation method thereof

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