CN107162456A - A kind of alkali slag cement accumulation of salt in the surface soil inhibitor and preparation method thereof - Google Patents
A kind of alkali slag cement accumulation of salt in the surface soil inhibitor and preparation method thereof Download PDFInfo
- Publication number
- CN107162456A CN107162456A CN201710318440.5A CN201710318440A CN107162456A CN 107162456 A CN107162456 A CN 107162456A CN 201710318440 A CN201710318440 A CN 201710318440A CN 107162456 A CN107162456 A CN 107162456A
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- Prior art keywords
- salt
- surface soil
- slag cement
- accumulation
- alkali slag
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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
- 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
Abstract
The present invention relates to building material technical field, more particularly to one kind can suppress the alkali slag cement accumulation of salt in the surface soil, adjust the inhibitor and preparation method thereof of alkali slag cement performance.The alkali slag cement accumulation of salt in the surface soil inhibitor, it is characterised in that：It is made up of the raw material of following mass percent：Zeolite 10 30%, silicon ash 10 20%, flyash 20 30%, boric acid 5 15%, ultrafine slag powder 5 55%.The alkali slag cement accumulation of salt in the surface soil inhibitor of the present invention, make and using simple, the accumulation of salt in the surface soil inhibitor has certain retarding effect simultaneously, the service behaviour of alkali slag cement concrete and mortar can be improved by adding the accumulation of salt in the surface soil inhibitor, improve construction quality after construction, the early strength and later strength 15 20% of alkali slag cement concrete can be improved, alkali slag cement concrete accumulation of salt in the surface soil probability is greatly reduced, reduction amplitude is up to 80%, suppress the accumulation of salt in the surface soil phenomenon after alkali slag cement construction, have inhibitory action to the accumulation of salt in the surface soil phenomenon of the construction material after construction.
Description
Technical field
The present invention relates to building material technical field, more particularly to one kind can suppress the alkali slag cement accumulation of salt in the surface soil, adjust alkali
Inhibitor of Properties of Slag Cement and preparation method thereof.
Background technology
Construction material is the class material being most widely used.Construction material traditional at present is followed out in application process
Hair-application-discard this pattern, causes resource increasingly depleted, and cause a large amount of obsolete materials, pollutant discharge and environment to dislike
Change.As often produced one ton of steel, will there are tens of tons of slags, slag and other waste residue outputs.The discharge of solid waste, takes soil
Ground, pollution environment, it is detrimental to health, and also results in the huge wasting of resources.How depletion of non-renewable resources is reduced, fully
Using industrial residue, turned waste into wealth, the direction of research is had been working hard as material scholar.
Alkali slag cement is one of focus of recent domestic research.It refers to containing active（It is unformed）Al2O3With
SiO2Slag under basic conditions, with alkali or Na2SiO3（K2SiO3）Etc. mixing, the New Building Materials of preparation.It is prepared
Technique is simple, and energy consumption is low, pollution is few, and the excellent performance of alkali slag cement, meets the Green Sustainable strategy of China,
Its research and extension has extremely important effect particularly with the more nervous China of the energy.
Though alkali slag cement has high-early-strength, high temperature resistant, a series of corrosion-resistant, Portland cements such as low-carbon environment-friendly
Unexistent excellent properties, but it is not still widely used at present, is primarily due to engineering after construction and surface easily occurs
Accumulation of salt in the surface soil phenomenon, the accumulation of salt in the surface soil be commonly called as again whiting, generally building surface produce, be typically rendered as white powder, floc sedimentation shape or
Flocculus shape.As building obtains leucoderma, there is serious influence to outward appearance attractive in appearance and engineering evaluation of its appearance etc.,
Can also have an impact in addition to the coloring effect of building, basalis and surface decoration layer, paint, veneer bond quality.It is to also
Cause quality accident, the extension time of handing over, a series of problems, such as of doing over again.The accumulation of salt in the surface soil is due to addition water soluble alkali content in construction
Height, internal metal ion activity is higher, is easily separated out with the evaporation of moisture.How to suppress accumulation of salt in the surface soil phenomenon is to improve alkali-activated slag water
The problem of one urgent need to resolve of mud popularization and application.
The content of the invention
The present invention in order to make up the defect of prior art there is provided one kind prepare simply, effect it is good, simple to operate, effective
Reduce alkali slag cement accumulation of salt in the surface soil probability and be conducive to the workability of alkali slag cement concrete, water retention property, improve work after construction
Cheng Zhiliang alkali slag cement accumulation of salt in the surface soil inhibitor and preparation method thereof.
The present invention is achieved through the following technical solutions：
A kind of alkali slag cement accumulation of salt in the surface soil inhibitor, it is characterised in that：It is made up of the raw material of following percentage by weight：Zeolite 10-
30%th, silicon ash 10-20%, flyash 20-30%, boric acid 5-15%, ultrafine slag powder 5-55%.
Further, the sized zeolite particles be 5A ranks, purity be 99% and more than.
The specific surface area of the silicon ash is 1000m2/kg。
The flyash is high-calcium fly ass, and specific surface area is in 500m2/ more than kg.
The fineness requirement of the ultrafine slag powder crosses 200 mesh sieves, tails over as within 2%.
The boric acid uses technical grade, purity more than 95%.
The preparation method of the alkali slag cement accumulation of salt in the surface soil inhibitor, comprises the following steps：
（1）Mixing：Zeolite, silicon ash, flyash, boric acid and ultrafine slag powder are well mixed according to above-mentioned percentage by weight
Afterwards；
（2）Grinding：By step（1）In mixed material grinding is carried out in ball mill, produce the alkali slag cement accumulation of salt in the surface soil suppression
Agent.
Further, step（1）By each raw material mixing 8-12 hours in batch mixer, it is sufficiently mixed it.
Step（2）Grinding time is 7-9 hours, grinding to specific surface area 500-600m2/kg。
It is preferred that, can be by step（1）Raw material after gained is well mixed crosses 200 mesh sieves, tails within control 1.5%, produces
Alkali slag cement accumulation of salt in the surface soil inhibitor.
In use, above-mentioned alkali-activated slag accumulation of salt in the surface soil inhibitor to be entrained in the alkali slag cement concrete or mortar to be used
In, the doping quality of the accumulation of salt in the surface soil inhibitor is the 5%~10% of the cement quality mixed when preparing alkali-slag concrete.
The accumulation of salt in the surface soil inhibitor inhibiting mechanism of the present invention is the hydroxyl effectively in absorption alkali slag cement by introducing zeolite
Ion, suppresses precipitation of the basic ion with hole；Introduce silicon ash and flyash and ultrafine slag powder, play its microballoon filing effect and
Epigenetic volcano ash effect, the effectively harmful hole number and volume of reduction alkali slag cement；PH value can effectively be adjusted by introducing boric acid, in
With unnecessary hydroxide ion.The accumulation of salt in the surface soil inhibitor of the present invention can be effectively improved slag cements compactness, and reduction alkali slag cement is general
Alkali probability and harm, can strengthen alkali slag cement concrete and water retentivity of mortar and workability according to its consumption, and meeting engineering should
With requiring.
The beneficial effects of the invention are as follows：The alkali slag cement accumulation of salt in the surface soil inhibitor of the present invention, makes and using simple, it is only necessary to mix
Enter the 5%-10% of cement quality when prepared by alkali slag cement, use cost is relatively low；The accumulation of salt in the surface soil inhibitor by neutralization reaction with
And micro aggregate effect, volcano ash effect can absorb the unnecessary alkali added in alkali slag cement and reduce harmful hole number, should simultaneously
Accumulation of salt in the surface soil inhibitor has certain retarding effect, different according to volume, extension setting time and engineering time, is conducive to concrete
Vibrate；The service behaviour of alkali slag cement concrete and mortar can be improved by adding the accumulation of salt in the surface soil inhibitor, improve engineering after construction
Quality, the accumulation of salt in the surface soil inhibitor can improve the early strength and later strength 15-20% of alkali slag cement concrete, and alkali is greatly reduced
Slag concrete accumulation of salt in the surface soil probability, reduction amplitude is up to 80%, suppresses the accumulation of salt in the surface soil phenomenon after alkali slag cement construction, to construction
The accumulation of salt in the surface soil phenomenon of construction material afterwards has inhibitory action.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Accompanying drawing 1 is influence of the accumulation of salt in the surface soil inhibitor volume of the preparation of embodiment 1 to alkali slag cement intensity；
Accompanying drawing 2 is that accumulation of salt in the surface soil inhibitor volume prepared by embodiment 2 influences on alkali slag cement sample carbon acid ion concentration；
Accompanying drawing 3 is that accumulation of salt in the surface soil inhibitor volume prepared by embodiment 2 influences on alkali slag cement sample pH value；
Accompanying drawing 4 is influence of the accumulation of salt in the surface soil inhibitor of the preparation of embodiment 3 to alkali slag cement sample pore structure；
Accompanying drawing 5 is influence of the accumulation of salt in the surface soil inhibitor of the preparation of embodiment 3 to alkali slag cement water absorption rate；
Accompanying drawing 6 is the aquation 60dSEM photos of alkali slag cement after admixture accumulation of salt in the surface soil inhibitor prepared by embodiment 4.
Embodiment
Embodiment one:
5A zeolites 10kg, silicon ash 20kg, high-calcium fly ass 25kg, ultrafine slag powder 35kg, technical grade boric acid 10kg are weighed, will be upper
Raw material is stated to be sufficiently mixed in batch mixer 10 hours, it is uniform to ensure to be sufficiently mixed, by mixed material in ball mill grinding 8
Hour, its specific surface area is determined for 550m2/ kg, produces accumulation of salt in the surface soil inhibitor.As shown in Figure 1, as the accumulation of salt in the surface soil of embodiment 1 suppresses
The increase of agent volume, alkali slag cement intensity presents first to increase reduces trend afterwards.The optimum mix amount of accumulation of salt in the surface soil inhibitor is 10.0%, and
Not filling accumulation of salt in the surface soil inhibitor to compression strength has growth.
Embodiment two：
5A zeolites 15kg, silicon ash 20kg, flyash 20kg, ultrafine slag powder 40kg, technical grade boric acid 5kg are weighed, by above-mentioned original
Material is sufficiently mixed 10 hours in batch mixer, and uniform to ensure to be sufficiently mixed, by mixed material, grinding 7 is small in ball mill
When, its specific surface area is determined for 520m2/ kg, produces accumulation of salt in the surface soil inhibitor.It was found from accompanying drawing 2, add after accumulation of salt in the surface soil inhibitor, alkali ore deposit
The top layer carbanion of slag cement hardened paste（That is accumulation of salt in the surface soil main component）Concentration declines to a great extent, and is dropped to by 2500mg/L
1100mg/L, effectively suppresses the accumulation of salt in the surface soil phenomenon of alkali slag cement.From accompanying drawing 3 as can be seen that adding after accumulation of salt in the surface soil inhibitor, alkali-activated slag
The pH value of hardened paste is significantly reduced, but remains at more than 11.0 alkaline environment, therefore, and accumulation of salt in the surface soil inhibitor can be in certain journey
PH value is adjusted on degree so that the hydroxide ion in hardened paste is kept within the specific limits, it is to avoid excessive ion, which overflows, to be made
Into the accumulation of salt in the surface soil.
Embodiment three：
5A zeolites 20kg, silicon ash 20kg, high-calcium fly ass 20kg, ultrafine slag powder 25kg, technical grade boric acid 15kg are weighed, will be upper
Raw material is stated to be sufficiently mixed in batch mixer 12 hours, it is uniform to ensure to be sufficiently mixed, by mixed material in ball mill grinding 9
Hour, its specific surface area is determined for 580m2/ kg, produces accumulation of salt in the surface soil inhibitor.From accompanying drawing 4 as can be seen that the admixture accumulation of salt in the surface soil of embodiment three
After inhibitor, the hole size reduction of alkali slag cement hardened paste has decreased below 0.02um by harmful hole more than 0.02um
Harmless hole.Reduce basic ion and issue additional the probability for causing the accumulation of salt in the surface soil with moisture by perforation channels, so as to suppress alkali slag cement
Accumulation of salt in the surface soil phenomenon.It was found from accompanying drawing 5, the water absorption rate of the alkali slag cement hardened paste after admixture accumulation of salt in the surface soil inhibitor is substantially reduced, can
Deduce the increase of its compactness, the number of openings reduction is consistent with compression strength and hole size variation.
Example IV：
5A zeolites 25kg, silicon ash 10kg, flyash 30kg, ultrafine slag powder 30kg, technical grade boric acid 5kg are weighed, by above-mentioned original
Material is sufficiently mixed 12 hours in batch mixer, and uniform to ensure to be sufficiently mixed, by mixed material, grinding 9 is small in ball mill
When, its specific surface area is determined for 600m2/ kg, produces accumulation of salt in the surface soil inhibitor.Accompanying drawing 6 is alkali slag cement after admixture accumulation of salt in the surface soil inhibitor
The SEM photograph of hardened paste, as seen from the figure, after admixture accumulation of salt in the surface soil inhibitor, slurry Hole is substantially reduced, and gel occurs
Class material is filled between hole, enhances the consistency of slurry, suppresses the accumulation of salt in the surface soil.
Embodiment five：
5A zeolites 30kg, silicon ash 15kg, flyash 25kg, ultrafine slag powder 20kg, technical grade boric acid 10kg are weighed, by above-mentioned original
Material is sufficiently mixed 12 hours in batch mixer, and uniform to ensure to be sufficiently mixed, by mixed material, grinding 9 is small in ball mill
When, its specific surface area is determined for 500m2/ kg, produces accumulation of salt in the surface soil inhibitor.
The accumulation of salt in the surface soil inhibitor inhibiting mechanism of the present invention is the hydroxyl effectively in absorption alkali slag cement by introducing zeolite
Ion, suppresses precipitation of the basic ion with hole；Introduce silicon ash and flyash and ultrafine slag powder, play its microballoon filing effect and
Epigenetic volcano ash effect, the effectively harmful hole number and volume of reduction alkali slag cement；PH value can effectively be adjusted by introducing boric acid, in
With unnecessary hydroxide ion.The accumulation of salt in the surface soil inhibitor of the present invention can be effectively improved slag cements compactness, and reduction alkali slag cement is general
Alkali probability and harm, can strengthen alkali slag cement concrete and water retentivity of mortar and workability according to its consumption, and meeting engineering should
With requiring.
Claims (10)
1. a kind of alkali slag cement accumulation of salt in the surface soil inhibitor, it is characterised in that：It is made up of the raw material of following percentage by weight：Zeolite 10-
30%th, silicon ash 10-20%, flyash 20-30%, boric acid 5-15%, ultrafine slag powder 5-55%.
2. alkali slag cement accumulation of salt in the surface soil inhibitor according to claim 1, it is characterised in that：The sized zeolite particles are 5A grades
Not, purity be 99% and more than.
3. alkali slag cement accumulation of salt in the surface soil inhibitor according to claim 1, it is characterised in that：The specific surface area of the silicon ash is
1000m2/kg。
4. alkali slag cement accumulation of salt in the surface soil inhibitor according to claim 1, it is characterised in that：The flyash is high calcium fine coal
Ash, specific surface area is in 500m2/ more than kg.
5. alkali slag cement accumulation of salt in the surface soil inhibitor according to claim 1, it is characterised in that：The ultrafine slag powder it is thin
Degree required 200 mesh sieves, tailed over as within 2%.
6. alkali slag cement accumulation of salt in the surface soil inhibitor according to claim 1, it is characterised in that：The boric acid uses technical grade,
Purity more than 95%.
7. a kind of preparation method of the alkali slag cement accumulation of salt in the surface soil inhibitor described in claim, it is characterised in that：Including following step
Suddenly：
（1）Mixing：Zeolite, silicon ash, flyash, boric acid and ultrafine slag powder are well mixed according to above-mentioned percentage by weight
Afterwards；
（2）Grinding：By step（1）In mixed material grinding is carried out in ball mill, produce the alkali slag cement accumulation of salt in the surface soil suppression
Agent.
8. the preparation method of alkali slag cement accumulation of salt in the surface soil inhibitor according to claim 7, it is characterised in that：Step（1）
By each raw material mixing 8-12 hours in batch mixer, it is sufficiently mixed it.
9. the preparation method of alkali slag cement accumulation of salt in the surface soil inhibitor according to claim 7, it is characterised in that：Step（2）Powder
Consume time as 7-9 hours, grinding to specific surface area 500-600m2/kg。
10. the preparation method of alkali slag cement accumulation of salt in the surface soil inhibitor according to claim 7, it is characterised in that：By step（1）
Raw material after gained is well mixed crosses 200 mesh sieves, tails within control 1.5%, produces alkali slag cement accumulation of salt in the surface soil inhibitor.
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| CN201710318440.5A CN107162456A (en) | 2017-05-08 | 2017-05-08 | A kind of alkali slag cement accumulation of salt in the surface soil inhibitor and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619298A (en) * | 2017-09-30 | 2018-01-23 | 广东清大同科环保技术有限公司 | A kind of anti-accumulation of salt in the surface soil cement base seepy material |
| CN108585662A (en) * | 2018-05-30 | 2018-09-28 | 中建西部建设西南有限公司 | A kind of lightweight pervious concrete people walking along the street face brick and preparation method thereof |
| CN108929061A (en) * | 2018-07-31 | 2018-12-04 | 济南大学 | A kind of alkali-excited cement accumulation of salt in the surface soil inhibitor and preparation method thereof |
| CN108947306A (en) * | 2018-07-31 | 2018-12-07 | 济南大学 | Modified alkali-excited cement accumulation of salt in the surface soil inhibitor of a kind of nano-titanium oxide and preparation method thereof |
| CN110105826A (en) * | 2019-05-14 | 2019-08-09 | 四川南方美创防水科技有限公司 | A kind of novel high polymer waterproof material |
| CN112897926A (en) * | 2021-02-23 | 2021-06-04 | 佳木斯市松江水泥有限公司 | Saltpetering inhibitor for portland cement |
| CN114907049A (en) * | 2022-05-26 | 2022-08-16 | 四川能投建工集团有限公司 | Alkali slag cement saltpetering inhibitor and preparation method thereof |
| CN115611542A (en) * | 2022-11-03 | 2023-01-17 | 南通市市政工程设计院有限责任公司 | Method for improving durability of concrete structure by controlling alkali aggregate reaction |
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| CN106518155A (en) * | 2016-11-18 | 2017-03-22 | 中建七局第四建筑有限公司 | Geopolymer-based thermal insulation mortar with water resistance and fire resistance |
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| CN105130305A (en) * | 2015-08-25 | 2015-12-09 | 武汉理工大学 | Alkaline slag cement solidification method for boron-containing waste resin of nuclear power plant |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619298A (en) * | 2017-09-30 | 2018-01-23 | 广东清大同科环保技术有限公司 | A kind of anti-accumulation of salt in the surface soil cement base seepy material |
| CN107619298B (en) * | 2017-09-30 | 2020-03-13 | 广东清大同科环保技术有限公司 | Anti-efflorescence cement-based permeable material |
| CN108585662A (en) * | 2018-05-30 | 2018-09-28 | 中建西部建设西南有限公司 | A kind of lightweight pervious concrete people walking along the street face brick and preparation method thereof |
| CN108929061A (en) * | 2018-07-31 | 2018-12-04 | 济南大学 | A kind of alkali-excited cement accumulation of salt in the surface soil inhibitor and preparation method thereof |
| CN108947306A (en) * | 2018-07-31 | 2018-12-07 | 济南大学 | Modified alkali-excited cement accumulation of salt in the surface soil inhibitor of a kind of nano-titanium oxide and preparation method thereof |
| CN110105826A (en) * | 2019-05-14 | 2019-08-09 | 四川南方美创防水科技有限公司 | A kind of novel high polymer waterproof material |
| CN112897926A (en) * | 2021-02-23 | 2021-06-04 | 佳木斯市松江水泥有限公司 | Saltpetering inhibitor for portland cement |
| CN114907049A (en) * | 2022-05-26 | 2022-08-16 | 四川能投建工集团有限公司 | Alkali slag cement saltpetering inhibitor and preparation method thereof |
| CN115611542A (en) * | 2022-11-03 | 2023-01-17 | 南通市市政工程设计院有限责任公司 | Method for improving durability of concrete structure by controlling alkali aggregate reaction |
| CN115611542B (en) * | 2022-11-03 | 2023-08-22 | 南通市市政工程设计院有限责任公司 | Method for controlling alkali aggregate reaction to improve durability of concrete structure |
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