CN103193405B - Silicon ash paste materials, its preparations and applicatio - Google Patents
Silicon ash paste materials, its preparations and applicatio Download PDFInfo
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- CN103193405B CN103193405B CN201310095399.1A CN201310095399A CN103193405B CN 103193405 B CN103193405 B CN 103193405B CN 201310095399 A CN201310095399 A CN 201310095399A CN 103193405 B CN103193405 B CN 103193405B
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- silicon ash
- paste materials
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- water
- retardant
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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
Abstract
The invention discloses a kind of silicon ash paste materials, its composition of raw materials contains silicon ash, water, retardant and souring agent, wherein silicon ash and the mass ratio of water are silicon ash: water=1:(0.9 ~ 2.5), the mass content of retardant is 0.01 ~ 0.06% of silicon ash paste materials, and the mass content of souring agent is 0.01 ~ 0.05% of silicon ash paste materials.The present invention for raw material with silicon ash, prepares environmental protection, efficiently silicon ash paste materials and is applied in concrete preparation.The method technique is simple, the silicon ash slurry obtained can be widely used in all kinds of concrete, being widely used in the important engineering such as harbour engineering, water resources dam engineering, nuclear power engineering, road and rail higher to concrete requirement, also may be used for normal concrete, for replacing cement.The silicon ash paste materials obtained is conducive to reducing the environmental pollution produced when silicon ash directly uses, and can improve the dispersion efficiency of silicon ash in concrete, can significantly improve concrete intensity, impermeability and resistance to chemical corrosion etc.
Description
Technical field
The present invention relates to the applied technical field of silicon ash, particularly relate to the application of silicon ash paste materials in technical field of concrete.
Technical background
Silicon ash is the dust reclaimed from the flue gas of the alloy smelting such as Pure Silicon Metal or ferrosilicon.Silicon ash median size is 0.15 ~ 0.2 micron, and specific surface area is 15000 ~ 20000m2/kg.Its main component is silicon-dioxide, and content is 80% ~ 92%.Impurity component is sodium oxide, calcium oxide, magnesium oxide, ferric oxide, ferric oxide and gac etc.
The domestic and international utilization to silicon ash is at present mainly concrete industry, and refractory materials additive, cement admixture etc., range of application is very extensive.Extensively send out from concrete industry and be applied in harbour engineering, water power hydro project, civil building engineering, road and rail construction project etc., major part is for improving cement concrete character and performance, for preparing the special concrete with characteristics such as early strong, high-strength, wear-resisting, resistance to erosion, corrosion-resistant, high impermeabilisations.Silicon ash is applied in concrete, can filler particles space, raising volume density and reduction porosity.Silicon ash has pozzolanic reaction in concrete simultaneously, and the Silicon-rich gel-strength that aquation is formed is higher than Ca(OH)
2with the hydrated cementitious gel style of work., there are two deficiencies in the application of silicon ash in concrete, one is that density is little, and produce very large dust when causing reinforced, contaminate environment, even affects reinforced accuracy sometimes in use procedure because the particle of silicon ash own is little; Two is silicon ash difficulties in dispersion in concrete, obviously can increase concrete churning time, have a strong impact on efficiency.
Summary of the invention
The object of the invention is to make up the deficiencies in the prior art, a kind of silicon ash paste materials and preparation method thereof is provided, both can have solved the problem of the grey in use contaminate environment of silicon, the dispersion rate of silicon ash in concrete can be improved again, raise the efficiency.
The present invention also has an object to be to provide the application method of above-mentioned silicon ash paste materials.
In order to realize foregoing invention object, present invention employs following technical scheme: a kind of silicon ash paste materials, its composition of raw materials contains silicon ash, water, retardant and souring agent, wherein silicon ash and the mass ratio of water are silicon ash: water=1:(0.9 ~ 2.5), the mass content of retardant is 0.01 ~ 0.06% of silicon ash paste materials, and the mass content of souring agent is 0.01 ~ 0.05% of silicon ash paste materials.
Preferably, the mass content of described silicon ash is 35% ~ 48% of silicon ash paste materials.
Described retardant is selected from one or more the mixing in hydroxycarboxylate and derivative thereof or phosphoric acid salt.
Preferably, described retardant is selected from tripoly phosphate sodium STPP, Sunmorl N 60S, one or more mixing of Sodium hexametaphosphate 99.
Described souring agent is selected from sulfuric acid or phosphoric acid.
As above the preparation method of arbitrary described silicon ash paste materials, containing following steps:
Prepare burden in proportion;
Part water is added in the stirred pot that high force dispersion devices is housed;
Keeping under the state stirred, slowly adding retardant, souring agent and silicon ash, then add the water of surplus;
After having fed in raw material, keep stirring more than 30min, final obtained to mix, solution-stabilized silicon ash slurry.
A kind of concrete admixture material, it is containing, for example upper arbitrary described silicon ash paste materials.
The present invention for raw material with silicon ash, prepares environmental protection, efficiently silicon ash paste materials and is applied in concrete preparation.The method technique is simple, the silicon ash slurry obtained can be widely used in all kinds of concrete, being widely used in the important engineering such as harbour engineering, water resources dam engineering, nuclear power engineering, road and rail higher to concrete requirement, also may be used for normal concrete, for replacing cement.The silicon ash paste materials obtained is conducive to reducing the environmental pollution produced when silicon ash directly uses, and can improve the dispersion efficiency of silicon ash in concrete, can significantly improve concrete intensity, impermeability and resistance to chemical corrosion etc.
Embodiment
Silicon ash of the present invention overflows with smelting furnace when smelting duriron and industrial silicon, and reclaimed with smoke eliminator, and its main component is SiO
2particulate flue dust, be ortho states silicon ash or low encryption silicon ash, its tap density is 150-400kg/m
3.Its dioxide-containing silica is generally 85%-92%, and other compositions are mainly sodium oxide, calcium oxide, magnesium oxide, ferric oxide, aluminum oxide and gac etc.
embodiment 1
This example is the preparation example of silicon ash slurry.
In the 6000L stirred pot that high force dispersion devices is housed, add 2000kg water, under the situation keeping Keep agitation, first add sulphuric acid soln and 3kg tripoly phosphate sodium STPP that 12.5kg concentration is 20%, then add silicon ash gradually, add speed to ensure that the silicon ash added can for foundation in rapid dispersion to water, adding silicon ash total amount is 2000kg, finally add the water 984.5kg of surplus, keep stirring 30min, the final silicon ash content forming silicon ash slurry is 40%.Its formula is as shown in table 1 below.
Table 1
| Number Material | Weight fraction |
| 1 silicon ash | 40 parts |
| 2 retardant | 0.06 part |
| 3 sulfuric acid | 0.05 part |
| 4 water | 59.89 parts |
| 5 add up to | 100 parts |
embodiment 2
This example is the preparation example of silicon ash slurry.
Undertaken preparing burden by such as following table 2 and operate by the step of embodiment 1:
Table 2
| Number Material | Weight fraction |
| 1 silicon ash | 38 parts |
| 2 retardant | 0.02 part |
| 3 sulfuric acid | 0.01 part |
| 4 water | 61.97 parts |
| 5 add up to | 100 parts |
Embodiment 3
This example is the preparation example of silicon ash slurry.
Undertaken preparing burden by such as following table 3 and operate by the step of embodiment 1:
Table 3
| Number Material | Weight fraction |
| 1 silicon ash | 45 parts |
| 2 retardant | 0.01 |
| 3 phosphoric acid | 0.01 |
| 4 water | 54.98 parts |
| 5 add up to | 100 parts |
Embodiment 4
Prepare silicon ash slurry by the method for embodiment 1, join in concrete, concrete mix is as shown in table 4 below, and its physicals is as shown in table 5 compared with not adding the concrete of silicon putty material.
Table 4
Table 5
Visible, its ultimate compression strength of concrete adding silicon mortar is much better than the concrete not adding silicon mortar; Its spread coefficient is then lower than the concrete not adding silicon mortar, and the concrete density of namely adding silicon ash slurry is better, and anti-permeability performance is more superior.
Embodiment 5
Prepare by the method for embodiment 1 silicon ash slurry and silicon ash join respectively in concrete, its concrete match ratio when physicals respectively as shown in following table 6 and table 7.
Table 6
Table 7
Visible, the concrete-agitating time adding silicon mortar is shorter than the churning time directly adding silicon ash, improves efficiency, and its physicals is also better than the concrete directly adding silicon ash relatively simultaneously.
Claims (5)
1. a silicon ash paste materials, it is characterized in that: its composition of raw materials contains silicon ash, water, retardant and souring agent, wherein the mass content of silicon ash is 35% ~ 48% of silicon ash paste materials, silicon ash and the mass ratio of water are silicon ash: water=1:(0.9 ~ 2.5), the mass content of retardant is 0.01 ~ 0.06% of silicon ash paste materials, the mass content of souring agent is 0.01 ~ 0.05% of silicon ash paste materials, and souring agent is selected from sulfuric acid or phosphoric acid.
2. silicon ash paste materials according to claim 1, is characterized in that: described retardant is selected from one or more the mixing in hydroxycarboxylate or phosphoric acid salt.
3. silicon ash paste materials according to claim 2, is characterized in that: described retardant is selected from tripoly phosphate sodium STPP, Sunmorl N 60S, one or more mixing of Sodium hexametaphosphate 99.
4. the preparation method of the silicon ash paste materials as described in as arbitrary in claims 1 to 3, is characterized in that containing following steps:
Prepare burden in proportion;
Part water is added in the stirred pot that high force dispersion devices is housed;
Keeping under the state stirred, slowly adding retardant, souring agent and silicon ash, then add the water of surplus;
After having fed in raw material, keep stirring more than 30min, final obtained to mix, solution-stabilized silicon ash slurry.
5. a concrete admixture material, is characterized in that containing, for example claims 1 to 3 arbitrary described silicon ash paste materials.
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| CN103193405B true CN103193405B (en) | 2015-12-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105174836A (en) * | 2015-08-28 | 2015-12-23 | 广州华隧威预制件有限公司 | Ultra-high strength active powder concrete and preparation method therefor |
| CN105130307A (en) * | 2015-08-29 | 2015-12-09 | 华南理工大学 | Method for preparing high-fluidity silica mortar |
| CN107056127B (en) * | 2017-05-08 | 2019-09-10 | 中交四航工程研究院有限公司 | Self waterproof erosion resistant, preparation method and application are mixed in a kind of concrete |
| CN112225503A (en) * | 2020-10-12 | 2021-01-15 | 四川省川铁枕梁工程有限公司 | High-performance pre-dispersed silica mortar concrete and preparation method thereof |
| CN112209646A (en) * | 2020-10-12 | 2021-01-12 | 四川省川铁枕梁工程有限公司 | High-performance pre-dispersed silica mortar and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482088A (en) * | 2003-06-19 | 2004-03-17 | 中国建筑材料科学研究院 | Concrete slurry form finely-divided mineral admixture and and method for manufacturing the same |
| CN102531502A (en) * | 2012-03-02 | 2012-07-04 | 河南省交通科学技术研究院有限公司 | Post-tensioning prestressed concrete porelike grouting agent and preparation method thereof, and grouting material |
| CN102757193A (en) * | 2012-07-12 | 2012-10-31 | 成都嘉新科技集团有限公司 | Composite admixture for concrete |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482088A (en) * | 2003-06-19 | 2004-03-17 | 中国建筑材料科学研究院 | Concrete slurry form finely-divided mineral admixture and and method for manufacturing the same |
| CN102531502A (en) * | 2012-03-02 | 2012-07-04 | 河南省交通科学技术研究院有限公司 | Post-tensioning prestressed concrete porelike grouting agent and preparation method thereof, and grouting material |
| CN102757193A (en) * | 2012-07-12 | 2012-10-31 | 成都嘉新科技集团有限公司 | Composite admixture for concrete |
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