CN1068554A - A kind of alkali exciting slag cement and method for making - Google Patents
A kind of alkali exciting slag cement and method for making Download PDFInfo
- Publication number
- CN1068554A CN1068554A CN92104479A CN92104479A CN1068554A CN 1068554 A CN1068554 A CN 1068554A CN 92104479 A CN92104479 A CN 92104479A CN 92104479 A CN92104479 A CN 92104479A CN 1068554 A CN1068554 A CN 1068554A
- Authority
- CN
- China
- Prior art keywords
- alkali
- slag
- cement
- activator
- slag cement
- 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.)
- Pending
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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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/1535—Mixtures thereof with other inorganic cementitious materials or other activators with alkali metal containing activators, e.g. sodium hydroxide or waterglass
-
- 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 a kind of alkali exciting slag cement and method for making, and main component is slag and alkali-activator, adds plaster stone and sulfate cement grog, directly mixes and levigate making.It utilizes alkali-activator, the lateral reactivity of activated slag generates more hydrate and rational formula, make slag cement have the early strength height, frost resistance is good, good corrosion resistance, the strong and low good characteristic that waits of hydration heat of sulfate corrosion has been eliminated " two grind a burning " technology of operating mine slag cement in the past, energy-conservation, ratio of performance to price height.Can be widely used in construction work, in the concrete works of road engineering and large volume.
Description
The invention belongs to a kind of improvement that contains scoriaceous cement and manufacturing process thereof.
Slag cement in the past, slag content is lower, be generally about 40%, all the other are grog and gypsum, and all be with the explained hereafter of " two mill one burn ", can be used for the common buildings material, but aspects such as intensity, frost resistance, wear resistance and anti-sulphates corrosive are all undesirable in early days for it, and complex manufacturing.
The objective of the invention is to develop a kind of intensity height, frost resistance is good, wear resistance is good, anti-sulphates corrosive is good, hydration heat is low slag cement, it excites and gives rational prescription and technology by alkali, solved the problem of above-mentioned existence effectively.
The present invention is achieved in that it has following active principle than (weight percent): slag 97-99%, alkali-activator 1-3%.In order to make its effect better, preferably adopt Na, the Ca ionic is polynary excites, and takes following active principle ratio: slag 75-90%, Portland clinker 7-22%, alkali-activator 1-3%; Slag 82-89%, plaster stone 10-15%, alkali-activator 1-3%; Slag 70-90%, Portland clinker 5-20% gives birth to the cream 3-10% of factory, alkali-activator 1-3%.Here said alkali-activator, general with the water-soluble salt or the alkali that contain sodium ion, for example, Na
2CO
3, NaOH, NaCL, Na
2SO
4Wait one or more.For improving its performance, it is an amount of also can to add Sodium Tetraborate.Portland clinker is generally used greater than 550 labels.After satisfactory material prepared, carry out combined grinding and form.The technology that this is advanced has been eliminated " two mills one burn " technology of slag cement in the past, has saved coal in a large number.
The present invention is with the scoriaceous lateral reactivity of highly basic component de-excitation, generates more hydrated product, and then produces high strength.Vitreum in the slag is the source of strength of cement, it can decompose under alkaline component effect and discharges silicate anion and aluminic acid negatively charged ion, slag is under the effect of the OH of high density, and its manosil AS skeleton is destroyed and enter in the solution with aquation complex ion group, and Ca is met in the back
#Generate hydrated products such as hydrated calcium silicate and drated calcium aluminate Deng positively charged ion and bring into play its intensity, add a spot of grog again, grog is met behind the water except that generating hydrated product and is emitted Ca(OH)
2, and the latter to be basic oxide play excitation to slag, polynaryly like this excite better than unit stimulation effect, its hydrated product also can be used as crystal seed, promotes the development of aquation and intensity.Alkali exciting slag cement Ca/Si is low, does not have Ca(OH)
2Separate out, so the endurance performance of concrete of making is good.Owing to used slag in large quantities, make its ability with higher resisting erosion of sulfate, COEFFICIENT K 28 days=1.08 against corrosion facts have proved that under the erosion of vitriol, intensity does not only reduce, and increases on the contrary.The longterm strength assay shows this cement, and 3 months, 6 months, 1 year, 1 year half, its intensity was in the trend that continue to rise, and each length of time is all with the speed increase of 5-10%.Its early strength is also higher, 3 days ultimate compression strength 200-300, and 7 days 300-500 can compare favourably with cement more than the 500-700 in 28 days.The antifreezing test result, functional, freeze thawing 25 times, weight loss is＜5% for the 0.07%(standard), loss of strength is 25% for the 10.9%(standard).Its wear resisting property is good, and rate of wear is 0.75%.In addition, alkali exciting slag cement of the present invention, water requirement is little, and water cement ratio is 0.42, and workability is good.Its hydration heat of evidence is 3 days 192 joule/gram, 7 days 205 joule/gram, and the cement for dam standard 3 days was 230 joule/gram, 7 days 272 joule/gram.Therefore this cement is not only applicable to construction work, is suitable for the concrete works and the road engineering of large volume yet.Its applied range is that " five is big " cement is incomparable at present.The present invention in use, its slurry with gather materials bonding firmly, the not only available general sandstone that gathers materials, also available fine aggregate and the industrial degree slag that contains fine powder, the molding sand etc. that gives up, the concrete durability of making is good.In a word, the present invention has the good ratio of performance to price.Applicant's production practice prove, reduce by 30 yuan than operating mine slag portland cement ton cost, 215.3 ten thousand yuan of annual benefits.Certain building constructor uses this new building material, and new output value 61.4 ten thousand in 3 months, 1,590,000 yuan of the new profits, and 2.4 ten thousand yuan of joint remaining sums increase income 10.3 ten thousand yuan of remaining sums, remarkable in economical benefits.
Table 1 is alkali slag cement and the contrast of common R type strength of cement.Table 2 is the performance comparison of domestic and international road cement and alkali slag cement of the present invention.
Table 1
Below be two embodiment of the present invention (ingredients by weight per-cent):
Embodiment 1 embodiment 2
Slag 70 85
Grog 22 5
Plaster stone 6 6.2
Na
2CO
32 (NaOH) 3
Sodium Tetraborate 0.8
To can directly make the standard base (SB) exciting slag cement after the above-mentioned material mixing.
Claims (7)
1, a kind of alkali exciting slag cement is characterized in that having following active principle ratio, slag 97-99%, alkali-activator 1-3%.
2, alkali exciting slag cement according to claim 1 is characterized in that having following active principle ratio, slag 75-90%, Portland clinker 7-22%, alkali-activator 1-3%.
3, alkali exciting slag cement according to claim 1 is characterized in that having following active principle ratio, slag 82-89%, plaster stone 10-15%, alkali-activator 1-3%.
4, alkali exciting slag cement according to claim 1 is characterized in that having following active principle, slag 70-90%, Portland clinker 5-20%, plaster stone 3-10%, alkali-activator 1-3%.
5,, it is characterized in that alkali-activator uses NaOH or NaCL according to claim 1,2,3 or 4 described alkali exciting slag cements.
6, alkali exciting slag cement according to claim 5, it is an amount of to it is characterized in that adding Sodium Tetraborate.
7, a kind of manufacture method according to claim 1,2,3,4 or 5 described alkali exciting slag cements is characterized in that forming batch mixes is levigate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92104479A CN1068554A (en) | 1992-06-13 | 1992-06-13 | A kind of alkali exciting slag cement and method for making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92104479A CN1068554A (en) | 1992-06-13 | 1992-06-13 | A kind of alkali exciting slag cement and method for making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1068554A true CN1068554A (en) | 1993-02-03 |
Family
ID=4940822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92104479A Pending CN1068554A (en) | 1992-06-13 | 1992-06-13 | A kind of alkali exciting slag cement and method for making |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1068554A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110460C (en) * | 1999-06-25 | 2003-06-04 | 孟云芳 | Composite cement |
| CN104987016A (en) * | 2015-07-10 | 2015-10-21 | 福州大学 | Neutral sodium-salt alkali slag tunnel fireproof coating, and preparation and using method thereof |
| CN105271846A (en) * | 2015-09-16 | 2016-01-27 | 邱如新 | Alkali slag cement production technology |
| CN105669146A (en) * | 2016-02-02 | 2016-06-15 | 福州大学 | Autoclaved aerated concrete block containing neutral sodium-salt alkali activated slag concrete and preparation method of autoclaved aerated concrete block |
| CN106277867A (en) * | 2016-07-20 | 2017-01-04 | 周荣 | A kind of preparation method of modified low bulk industrial residue base alkali-activated material |
| CN108203251A (en) * | 2018-03-01 | 2018-06-26 | 东北大学 | A kind of alkali-activated carbonatite blast-furnace cinder cementitious material and preparation method thereof |
| CN112341012A (en) * | 2020-11-25 | 2021-02-09 | 合肥工业大学 | Novel mixed alkaline cement based on alkali-activated cementing material and portland cement and preparation method thereof |
| CN112374784A (en) * | 2020-11-23 | 2021-02-19 | 广西交科集团有限公司 | Coagulant of alkali-activated material at low temperature and use method thereof |
-
1992
- 1992-06-13 CN CN92104479A patent/CN1068554A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1110460C (en) * | 1999-06-25 | 2003-06-04 | 孟云芳 | Composite cement |
| CN104987016A (en) * | 2015-07-10 | 2015-10-21 | 福州大学 | Neutral sodium-salt alkali slag tunnel fireproof coating, and preparation and using method thereof |
| CN105271846A (en) * | 2015-09-16 | 2016-01-27 | 邱如新 | Alkali slag cement production technology |
| CN105669146A (en) * | 2016-02-02 | 2016-06-15 | 福州大学 | Autoclaved aerated concrete block containing neutral sodium-salt alkali activated slag concrete and preparation method of autoclaved aerated concrete block |
| CN105669146B (en) * | 2016-02-02 | 2017-11-17 | 福州大学 | Neutral sodium-salt alkali-activated slag steam pressure sand aerated concrete block and preparation method thereof |
| CN106277867A (en) * | 2016-07-20 | 2017-01-04 | 周荣 | A kind of preparation method of modified low bulk industrial residue base alkali-activated material |
| CN108203251A (en) * | 2018-03-01 | 2018-06-26 | 东北大学 | A kind of alkali-activated carbonatite blast-furnace cinder cementitious material and preparation method thereof |
| CN112374784A (en) * | 2020-11-23 | 2021-02-19 | 广西交科集团有限公司 | Coagulant of alkali-activated material at low temperature and use method thereof |
| CN112341012A (en) * | 2020-11-25 | 2021-02-09 | 合肥工业大学 | Novel mixed alkaline cement based on alkali-activated cementing material and portland cement and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |