CN1275545A - Quick-setting cement composition - Google Patents
Quick-setting cement composition Download PDFInfo
- Publication number
- CN1275545A CN1275545A CN 99107743 CN99107743A CN1275545A CN 1275545 A CN1275545 A CN 1275545A CN 99107743 CN99107743 CN 99107743 CN 99107743 A CN99107743 A CN 99107743A CN 1275545 A CN1275545 A CN 1275545A
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- Prior art keywords
- oxide
- cement
- quick
- cement composition
- setting cement
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B28/34—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 cold phosphate binders
- C04B28/342—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 cold phosphate binders the phosphate binder being present in the starting composition as a mixture of free acid and one or more reactive oxides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00215—Mortar or concrete mixtures defined by their oxide composition
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A quick-setting hardening cement composition is made up by adding ammonium polyphosphate solution to inorganic mixture formed from silicon dioxide, iron oxide and one or more than one kind selected from aluminium oxide, titanium oxide, manganese oxide, calcium oxide or potassium oxide. Said invention possesses super-rapid herdening property, and can possess a certain internal compressive strength in a short time,and can overcome the defect of water-contained cement used in construction previously.
Description
The invention relates to a kind of invention that hardened cement (be referred to as " not it ") constitutes thing of coagulating.It can make the cement of not converting water that the sclerosis coagulation reaction takes place.Specify in main inorganics such as dust and sand and magnesium oxide, to add exactly and advance ammonium polyphosphate (Ammonium Poly Phosphate Solution) solution, the rapid-result hardened cement that forms thereby coagulation reaction is hardened in generation.
Technical field that the present invention belongs to is compared different with the constitute of general in the past cement, magnesian content is higher, does not add water and use in the sclerosis coagulation reaction, belongs to the special cement technical field.Having in main component magnesium oxide and reduce natural magnesium similarly in the conventional art, or add the hydrochloric acid magnesium solution in the magnesium that obtains with other method obtains decorating with rostone or makes the so-called allanite that brick and tile are used after the mixing.It has quick, the easy-to-use advantage of condensing.Cause wherein contains mineral composition, thereby intensity height after the scleroma, and is more outstanding than other rostone quality, has reflecting feel after the polishing.But because of its water content is low, use, and have the unfavorable problem of building stones surface scleroma so can not be used for outside construction.
In addition, as a kind of cement that in phosphoric acid, adds metal oxide of also having of special cement.This cement has good resistivity against fire, erosion resistance and wear resistance.But because of it has the shortcoming that needs heating, be not suitable for a large amount of uses, only be used at present as the dental filler.Its use range is subjected to certain limitation.
In construction industry, can say the success or failure of the length decision engineering of duration.And this problem often relates to water and the reaction and the hard reaction with fixed attention of cement.For time of reaching desirable strength and needing also is a major cause that influences duration length.
For overcoming the shortcoming of above-mentioned special cement, the purpose of this invention is to provide a kind of quick-setting cement composition, this rapid-result hardened cement has supper-fast Hardenability, and can have certain internal pressure strength at short notice, can overcome construction in the past and go up the aqueous shortcoming of using of cement, be a kind of indurative at once cement constitute.It is to add ammonium polyphosphate solution in the inorganic constitute that is main raw material with silicon-dioxide, magnesium oxide, thereby obtains the constitute of cement (not it).This material setting and hardening speed is fast, just can have high internal pressure strength at short notice, the transaction capabilities brilliance, and erosion resistance, resistance toheat are outstanding.
Specifically, the present invention is adding living solution in main inorganic raw material silicon-dioxide and magnesium oxide, ammonium polyphosphate (Ammonium Poly Phosphate Solution) solution, thus obtain the formation thing of cement (not it).The ratio of the shared inorganic raw material gross weight of wherein various compositions is: silicon-dioxide 65-82%, magnesium oxide 17-28%, and by the inorganic mixture of choosing one or more in aluminum oxide, ferric oxide, titanium oxide, manganese oxide, calcium oxide or the potassium oxide etc., account for 0.1-1.5%, amount to 100 kilograms, the ammonium polyphosphate solution that adds the 20-30 kilogram has so just constituted the formation prescription of cement (not it).
Also can account for silicon-dioxide 65-77% in the above-mentioned inorganic raw material, magnesium oxide accounts for 22-28%.
More than shown in the cement constitute in, chemical reaction takes place between the inorganics of solid powdery hardly.But after ammonium polyphosphate solution adds, chemical reaction takes place at once just.Ammonia in the solution decomposes the volatilization back and combines with inorganics, forms firm reticulated structure.
When adding living solution in inorganics, what of addition with the relation of reaction are: if the addition deficiency, then the part inorganic substance do not react; If addition is too much, the remaining solution in reaction back is stayed in the concrete, and produced oxygen for a long time.
If but inorganic constitute is excessive, then has the inorganic substance that the part end reacts and remain in the middle of the concrete, so reduce the intensity of concrete itself.In a word, the additive capacity of defined had both been avoided the problems referred to above in this constitute, had greatly accelerated setting rate again, had improved internal pressure strength, shock strength, erosion resistance etc., had outstanding performance.
In addition, the magnesium oxide in the cement formation thing reacts with salt material or most living solution at short notice and combines, and some magnesium oxide passes through the water molecules of a small amount of existence in the solution and combines with other material composition in addition, the formation congealed solid.But, when content of magnesia is too much, can cause the reacted expansion cracks phenomenon of hardening of cement.Silicon-dioxide can improve concrete intensity and water tolerance.Above conclusion is the achievement that obtains on the basis of long-term experiment.
On basis of the present invention, cement constitutes thing can no longer add water in use, therefore, can disperse A E preparation (occurring the freeze/thaw phenomenon when avoiding general in the past cement to use), cement particle, reduce unit consumption of water, take the small bubbles among the coagulation scholar out of, thereby improve operation quality; While is because needn't re-use various mixed preparations such as water reducer, current lubrication agent, contraction water reducer, thereby it is more simple and easy to do to operate.The use of in-23-55 degree centigrade scope, all can constructing.Particularly also can construct in the winter of cold.
Feature of the present invention is: moulding is rapid, and the moulding early strength is big, and constructing, internal pressure can reach 200-250kg/cm after 2 hours
2Corrosion resistance nature to general pharmaceutical chemicals, solvent and salt solution etc. is outstanding.Because of re-using the calcium oxide in the cement in the past hardly, therefore to the steel bars in concrete non-corrosiveness.In addition, the upper limit temperature of heat tolerance can reach 1000 degrees centigrade, and thermotolerance is splendid.Supper-fast Hardenability makes subaqueous work easier.Its every performance and advantage are by illustration.
Cement of the present invention constitutes thing and can be widely used in the constructions such as highway reparation, cement wall, pillar, upholder, bridge.Can be used for also that plant facilities is repaired, in the operations such as reparation of fixed operation, domestic gas pipeline and the underground pipeline of the waterway pipe construction of reparation, water pipe wall or the sluice etc. on industrial freezer ground, airstrip, guard operation, dock cargo hold, mechanical prop, stay-bolt nail.
Usefulness and technology formation that cement constitutes the thing composition see following examples explanation for details.Embodiment 1
73 kilograms of silicon-dioxide, 26 kilograms in magnesium oxide adds proportion and is 25 kilograms of 1.4% ammonium polyphosphate solution in the mixing inorganics that aluminium sesquioxide is 1 kilogram, and cement constitutes thing and obtains concrete product through the sclerosis coagulation reaction.Below for this concrete product being carried out the data that physical property experiment back is obtained.
(1) pressure
(2) intensity of beam
(3) bond strength
Concrete: 60kg/cm
2
Metal: 40kg/cm
2
Claims (3)
1. quick-setting cement composition is characterized in that choosing at inorganic raw material silicon-dioxide, ferric oxide and in by aluminum oxide, ferric oxide, titanium oxide, manganese oxide, calcium oxide or potassium oxide and adds ammonium polyphosphate solution in one or more the inorganic mixture and constitute.
2. quick-setting cement composition according to claim 1, it is characterized in that in inorganic raw material, containing the silicon-dioxide that accounts for gross weight 65-82%, the magnesium oxide of 17-28% and by the inorganic mixture 0.1-1.5% that chooses one or more in aluminum oxide, ferric oxide, titanium oxide, manganese oxide, calcium oxide or the potassium oxide etc., in amounting to 100 kilograms, add ammonium polyphosphate solution 20-30 kilogram and constitute.
3. quick-setting cement composition according to claim 2 is characterized in that dioxide-containing silica is the 65-77% of gross weight in the inorganic raw material, and content of magnesia is the 22-28% of gross weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99107743 CN1275545A (en) | 1999-05-28 | 1999-05-28 | Quick-setting cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99107743 CN1275545A (en) | 1999-05-28 | 1999-05-28 | Quick-setting cement composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1275545A true CN1275545A (en) | 2000-12-06 |
Family
ID=5272906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99107743 Pending CN1275545A (en) | 1999-05-28 | 1999-05-28 | Quick-setting cement composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1275545A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200890B (en) * | 2005-12-13 | 2011-01-19 | 宇部材料工业株式会社 | Soil hardening material |
-
1999
- 1999-05-28 CN CN 99107743 patent/CN1275545A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200890B (en) * | 2005-12-13 | 2011-01-19 | 宇部材料工业株式会社 | Soil hardening material |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |