CN102351443A - High temperature resistant alkali slag cementing material and its preparation method - Google Patents
High temperature resistant alkali slag cementing material and its preparation method Download PDFInfo
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- CN102351443A CN102351443A CN201110199805XA CN201110199805A CN102351443A CN 102351443 A CN102351443 A CN 102351443A CN 201110199805X A CN201110199805X A CN 201110199805XA CN 201110199805 A CN201110199805 A CN 201110199805A CN 102351443 A CN102351443 A CN 102351443A
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- 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
A high temperature resistant alkali slag cementing material and its preparation method relate to a cementing material and its preparation method. The invention aims to solve the peeling problem of carbon fiber cloth and concrete at high temperature due to the low vitrification point of present building strengthening adhesives and the problem that present building strengthening adhesives are not resistant to high temperatures. The high temperature resistant alkali slag cementing material is made from a slag powder, potassium water glass, sodium hydroxide and water. The preparation method provided by the invention comprises the following steps of: 1, adding sodium hydroxide into potassium water glass with uniformly stirring, and adjusting the modulus of potassium water glass; 2, pouring the slag powder into a mixing pot, adding potassium water glass with stirring, and adding water into the mixing pot with stirring to obtain the high temperature resistant alkali slag cementing material. The compressive strength of the alkali slag cementing material at the high temperature of 700 DEG C is equivalent to that at normal temperature. The interlaminar shear strength of the material provided by the invention is much better than that of an epoxy organic glue, and an interlaminar shear test shows an ideal destroy mode of concrete peeling at the interface. The preparation method is applied in the field of building strengthening materials.
Description
Technical field
The present invention relates to a kind of gelling material and preparation method thereof.
Background technology
At present, carbon cloth is widely applied in reinforced concrete structure, and it has the good temperature resistance ability under the anoxybiotic situation, and promptly when being lower than 1000 ℃, temperature is very little to the influence of carbon cloth tensile strength.But under the aerobic situation, when temperature reaches 400 ℃, obvious oxidation can take place, the intensity of carbon cloth descends thereupon.Building reinforce tackiness agent commonly used at present is the epoxies organic gel, its second-order transition temperature T
gGreatly about 65～82 ℃, when envrionment temperature reaches glass transition temperature T
gThe time, the cohesive strength of organic adhesion agent will sharply reduce, lose its transmit between fiber shearing and with the cooperative basis of concrete, very easily cause carbon cloth and concrete peeling off, the intensity of carbon cloth is not in full use, can not be high temperature resistant.
Summary of the invention
The present invention is that will to solve existing building reinforced glue stick second-order transition temperature low excessively, at high temperature very easily causes carbon cloth and concrete peeling off, can not resistant to elevated temperatures problem, high temperature resistant alkali slag gel material and preparation method thereof is provided.
The present invention is high temperature resistant, and the alkali slag gel material is processed by slag powders, potash water glass, sodium hydroxide and water; Wherein the mass ratio of slag powders and potash water glass is 1: 0.2～0.3, and the mass ratio of slag powders and sodium hydroxide is 1: 0.04～0.05, and the mass ratio of slag powders and water is 1: 0.35～0.45; The modulus of said potash water glass is 2.79.
The preparation method of above-mentioned high temperature resistant alkali slag gel material, carry out according to the following steps: be to add sodium hydroxide in 2.79 the potash water glass to stir to modulus one,, the modulus that makes potash water glass is 0.8～1.2; Two, slag powders is poured in the agitator kettle, poured into modulus again and be 0.8～1.2 potash water glass, stir 1～2min, in agitator kettle, pour water then into, stir 2～8min, promptly obtain high temperature resistant alkali slag gel material; Said slag powders and modulus are that the mass ratio of 2.79 potash water glass is 1: 0.2～0.3, and the mass ratio of slag powders and sodium hydroxide is 1: 0.04～0.05, and the mass ratio of slag powders and water is 1: 0.35～0.45.
Slag receives the hydration process of potash water glass under exciting to be: generate KOH and Si (OH) by the potash water glass hydrolysis
4, the Ca of slag glass body then
2+, Mg
2+OH in the planar water glass medium
-, the O in the slag
2-The absorption proton forms oxyhydroxide and water, makes the slag glass body disintegrate, dissolve; Last Ca (OH)
2Si (OH) with the reaction generation
4Form the hydrated calcium silicate gel and a type zeolite minerals of indissoluble.Mostly product is spacial framework, has good gelling and stability.At normal temperatures with the mechanical property of alkali slag gel material affixing carbon fabric reinforced concrete beam of the present invention with suitable with organic gel affixing carbon fabric reinforced concrete beam, high temperature resistant alkali slag gel material can make carbon cloth and the effective co-operation of concrete beam plate under fire.It is all better that this alkali slag gel material has high-early-strength, impermeability, bond and anchor property simultaneously, and cost is low and pollute outstanding advantages such as little.
Alkali slag gel material of the present invention is as the building reinforce tackiness agent of affixing carbon fabric and bar planting; Has resistant to elevated temperatures characteristic; At first, this alkali slag gel material ultimate compression strength in the time of 700 ℃ is suitable with its ultimate compression strength at normal temperatures, the alkali slag gel material is processed the cubes of 20mm * 20mm * 20mm; Record that ultimate compression strength reaches 82.10MPa under its normal temperature, ultimate compression strength reaches 78.85MPa in the time of 700 ℃.Secondly; Alkali slag gel material inplane shear intensity at normal temperatures can reach 1.43～1.48MPa; Suitable with epoxies organic gel inplane shear intensity; And alkali slag gel material inplane shear intensity still can reach 0.98～1.05MPa under 700 ℃ of high temperature, is far superior to epoxies organic gel shear at high temperature effect; Alkali slag gel material inplane shear test presents the desirable failure mode that concrete at the interface is stripped from, and solved the problem that high temperature is very easily peeled off with concrete with epoxies organic gel affixing carbon fabric down effectively.
Description of drawings
The SEM photo of the alkali slag gel material that Fig. 1 makes for embodiment 23 under 20 ℃; The SEM photo of the alkali slag gel material that Fig. 2 makes for embodiment 23 under 200 ℃; The SEM photo of the alkali slag gel material that Fig. 3 makes for embodiment 23 under 400 ℃; The SEM photo of the alkali slag gel material that Fig. 4 makes for embodiment 23 under 600 ℃; The SEM photo of the alkali slag gel material that Fig. 5 makes for embodiment 23 under 800 ℃; The SEM photo of the alkali slag gel material that Fig. 6 makes for embodiment 23 under 1000 ℃; The X-ray diffractogram of alkali slag gel material behind different high temperature that Fig. 7 makes for embodiment 23; Fig. 8 under hot conditions alkali slag gel material and cement stone ultimate compression strength with the variation of temperature relation curve ,-▲-expression cement stone ,-■-expression is high temperature resistant alkali slag gel material.
Embodiment
Technical scheme of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: this embodiment is high temperature resistant, and the alkali slag gel material is processed by slag powders, potash water glass, sodium hydroxide and water; Wherein the mass ratio of slag powders and potash water glass is 1: 0.2～0.3, and the mass ratio of slag powders and sodium hydroxide is 1: 0.04～0.05, and the mass ratio of slag powders and water is 1: 0.35～0.45; The modulus of said potash water glass is 2.79.
Embodiment two: what this embodiment and embodiment one were different is: the mass ratio of slag powders and potash water glass is 1: 0.2.Other is identical with embodiment one.
Embodiment three: what this embodiment and embodiment one were different is: the mass ratio of slag powders and potash water glass is 1: 0.3.Other is identical with embodiment one.
Embodiment four: what this embodiment and embodiment one were different is: the mass ratio of slag powders and potash water glass is 1: 0.25.Other is identical with embodiment one.
Embodiment five: what this embodiment and embodiment one were different is: the mass ratio of slag powders and potash water glass is 1: 0.286.Other is identical with embodiment one.
Embodiment six: what this embodiment was different with one of embodiment one to five is: the mass ratio of slag powders and sodium hydroxide is 1: 0.04.Other is identical with one of embodiment one to five.
Embodiment seven: what this embodiment was different with one of embodiment one to five is: the mass ratio of slag powders and sodium hydroxide is 1: 0.05.Other is identical with one of embodiment one to five.
Embodiment eight: what this embodiment was different with one of embodiment one to five is: the mass ratio of slag powders and sodium hydroxide is 1: 0.046.Other is identical with one of embodiment one to five.
Embodiment nine: what this embodiment was different with one of embodiment one to eight is: the mass ratio of slag powders and water is 1: 0.35.Other is identical with one of embodiment one to eight.
Embodiment ten: what this embodiment was different with one of embodiment one to eight is: the mass ratio of slag powders and water is 1: 0.45.Other is identical with one of embodiment one to eight.
Embodiment 11: what this embodiment was different with one of embodiment one to eight is: the mass ratio of slag powders and water is 1: 0.408.Other is identical with one of embodiment one to eight.
Embodiment 12: the preparation method of this embodiment is high temperature resistant alkali slag gel material, carry out according to the following steps: one, in modulus is 2.79 potash water glass, add sodium hydroxide and stir, the modulus that makes potash water glass is 0.8～1.2; Two, slag powders is poured in the agitator kettle, poured into modulus again and be 0.8～1.2 potash water glass, stir 1～2min, in agitator kettle, pour water then into, stir 2～8min, promptly obtain high temperature resistant alkali slag gel material; Said slag powders and modulus are that the mass ratio of 2.79 potash water glass is 1: 0.2～0.3, and the mass ratio of slag powders and sodium hydroxide is 1: 0.04～0.05, and the mass ratio of slag powders and water is 1: 0.35～0.45.
Slag powders, potash water glass and sodium hydroxide are the commercially available prod in this embodiment.
Embodiment 13: what this embodiment and embodiment 12 were different is: the modulus that makes potash water glass in the step 1 is 0.8.Other is identical with embodiment 12.
Embodiment 14: what this embodiment and embodiment 12 were different is: the modulus that makes potash water glass in the step 1 is 1.2.Other is identical with embodiment 12.
Embodiment 15: what this embodiment and embodiment 12 were different is: the modulus that makes potash water glass in the step 1 is 0.9～1.1.Other is identical with embodiment 12.
Embodiment 16: what this embodiment and embodiment 12 were different is: the modulus that makes potash water glass in the step 1 is 1.Other is identical with embodiment 12.
Embodiment 17: what this embodiment was different with one of embodiment 12 to 16 is: stir 1min in the step 2 for the first time.Other is identical with one of embodiment 12 to 16.
Embodiment 18: what this embodiment was different with one of embodiment 12 to 16 is: stir 2min in the step 2 for the first time.Other is identical with one of embodiment 12 to 16.
Embodiment 19: what this embodiment was different with one of embodiment 12 to 18 is: stir 2min in the step 2 for the second time.Other is identical with one of embodiment 12 to 18.
Embodiment 20: what this embodiment was different with one of embodiment 12 to 18 is: stir 8min in the step 2 for the second time.Other is identical with one of embodiment 12 to 18.
Embodiment 21: what this embodiment was different with one of embodiment 12 to 18 is: stir 4～6min in the step 2 for the second time.Other is identical with one of embodiment 12 to 18.
Embodiment 22: what this embodiment was different with one of embodiment 12 to 18 is: stir 5min in the step 2 for the second time.Other is identical with one of embodiment 12 to 18.
Embodiment 23: the preparation method of this embodiment is high temperature resistant alkali slag gel material, carry out according to the following steps: one, in modulus is 2.79 28.6g potash water glass, add 4.6g sodium hydroxide and stir, the modulus that makes potash water glass is 0.8; Two, the 100g slag powders is poured in the agitator kettle, poured into modulus again and be 0.8 potash water glass, stir 1min, in agitator kettle, pour 40.8g water then into, stir 5min, promptly obtain high temperature resistant alkali slag gel material.
The rank of the said slag powders of this embodiment is S95.
The time for use of the high temperature resistant alkali slag gel material that this embodiment makes is no more than 1h.When using this alkali slag gel material affixing carbon fabric reinforced concrete structure; Carbon cloth is soaked in the alkali slag gel material need and pestle is smash 15min, and the carbon cloth that will soak into the alkali slag gel material then sticks on the concrete structural surface that polishes flat.
The alkali slag gel material of this embodiment SEM photo such as Fig. 1 under 20 ℃; Alkali slag gel material SEM photo such as Fig. 2 under 200 ℃; Alkali slag gel material SEM photo such as Fig. 3 under 400 ℃; Alkali slag gel material SEM photo such as Fig. 4 under 600 ℃, alkali slag gel material SEM photo such as Fig. 5 under 800 ℃, alkali slag gel material SEM photo such as Fig. 6 under 1000 ℃.Can find out that before 600 ℃, considerable change does not take place the microstructure of alkali slag gel material.
The X-ray diffractogram of alkali slag gel material behind different high temperature of this embodiment is as shown in Figure 7, and M representes Ca
2MgSi
2O
7, the alkali slag gel material begins to take place solid state reaction in 600～800 ℃ of intervals, generate akermanite, and the thing phase composite is by the noncrystal crystal phase that changes into mutually, and hydrated calcium silicate (C-S-H) gel structure has than multiple cracking and occurs.
As a comparison; Chosen ordinary Portland cement P.O425; The cement paste test block of preparation and alkali slag gel material same size (cubes of 20mm * 20mm * 20mm) is carried out high temperature resistant test simultaneously with the alkali slag gel material, to compare the difference of the two resistance to elevated temperatures.Ultimate compression strength is as shown in Figure 8 with the variation of temperature relation curve, can find out under the situation of identical wc, and alkali slag gel material resistance to elevated temperatures is superior to the cement stone by the ordinary Portland cement preparation.
Claims (10)
1. high temperature resistant alkali slag gel material is characterized in that high temperature resistant alkali slag gel material processed by slag powders, potash water glass, sodium hydroxide and water; Wherein the mass ratio of slag powders and potash water glass is 1: 0.2～0.3, and the mass ratio of slag powders and sodium hydroxide is 1: 0.04～0.05, and the mass ratio of slag powders and water is 1: 0.35～0.45; The modulus of said potash water glass is 2.79.
2. the preparation method of high temperature resistant alkali slag gel material according to claim 1, the mass ratio that it is characterized in that slag powders and potash water glass is 1: 0.286.
3. the preparation method of high temperature resistant alkali slag gel material according to claim 1 and 2, the mass ratio that it is characterized in that slag powders and sodium hydroxide is 1: 0.046.
4. the preparation method of high temperature resistant alkali slag gel material according to claim 3 is characterized in that: the mass ratio of slag powders and water is 1: 0.408.
5. the preparation method of the described high temperature resistant alkali slag gel material of claim 1; The preparation method who it is characterized in that high temperature resistant alkali slag gel material; Carry out according to the following steps: be to add sodium hydroxide in 2.79 the potash water glass to stir to modulus one,, the modulus that makes potash water glass is 0.8～1.2; Two, slag powders is poured in the agitator kettle, poured into modulus again and be 0.8～1.2 potash water glass, stir 1～2min, in agitator kettle, pour water then into, stir 2～8min, promptly obtain high temperature resistant alkali slag gel material; Said slag powders and modulus are that the mass ratio of 2.79 potash water glass is 1: 0.2～0.3, and the mass ratio of slag powders and sodium hydroxide is 1: 0.04～0.05, and the mass ratio of slag powders and water is 1: 0.35～0.45.
6. the preparation method of high temperature resistant alkali slag gel material according to claim 5 is characterized in that making the modulus of potash water glass in the step 1 is 0.8.
7. the preparation method of high temperature resistant alkali slag gel material according to claim 5 is characterized in that making the modulus of potash water glass in the step 1 is 1.2.
8. the preparation method of high temperature resistant alkali slag gel material according to claim 5 is characterized in that making the modulus of potash water glass in the step 1 is 1.
9. according to the preparation method of claim 5 or 6 described high temperature resistant alkali slag gel materials, it is characterized in that stirring for the first time in the step 2 1min.
10. the preparation method of high temperature resistant alkali slag gel material according to claim 9 is characterized in that stirring for the second time in the step 2 5min.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129969A (en) * | 2014-07-23 | 2014-11-05 | 广西启利新材料科技股份有限公司 | Geopolymer-based carbon fiber sheet binder |
| CN106116391A (en) * | 2016-06-28 | 2016-11-16 | 蚌埠市方阵商品混凝土有限公司 | A kind of refractory concrete |
| CN106431037A (en) * | 2016-09-19 | 2017-02-22 | 哈尔滨工业大学 | Method for relieving shrinkage of alkali slag binding material |
| CN106517987A (en) * | 2016-11-22 | 2017-03-22 | 哈尔滨理工大学 | Micro-steel fiber reinforced alkali slag cementing material and preparation method |
| CN106630877A (en) * | 2016-12-22 | 2017-05-10 | 南京工业大学 | Alkaline-slag-based inorganic adhesive for bonding carbon fiber sheets |
| CN106746825A (en) * | 2016-11-24 | 2017-05-31 | 哈尔滨理工大学 | String enhancing alkali--activated slag cement and preparation method thereof |
| CN108756050A (en) * | 2018-07-27 | 2018-11-06 | 哈尔滨工业大学 | A kind of high temperature resistant brick setting and preparation method thereof |
| CN110316984A (en) * | 2019-07-10 | 2019-10-11 | 安徽工业大学 | A kind of compound alkali-activated carbonatite solid waste type high shear force, refractory inorganic adhesive and preparation method thereof |
| CN110744882A (en) * | 2019-09-30 | 2020-02-04 | 曾小燕 | Preparation method of asphalt-based waterproof coiled material |
| CN114622681A (en) * | 2022-04-19 | 2022-06-14 | 哈尔滨理工大学 | Refractory fiber reinforced alkali slag cementing material thermal insulation wallboard and processing method thereof |
-
2011
- 2011-07-18 CN CN201110199805XA patent/CN102351443B/en active Active
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| 《铁道学报》 20110131 郑文忠 等 用碱矿渣胶凝材料粘贴碳纤维布加固组合梁受力性能试验研究 第101-107页 1-10 第33卷, 第1期 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129969A (en) * | 2014-07-23 | 2014-11-05 | 广西启利新材料科技股份有限公司 | Geopolymer-based carbon fiber sheet binder |
| CN106116391A (en) * | 2016-06-28 | 2016-11-16 | 蚌埠市方阵商品混凝土有限公司 | A kind of refractory concrete |
| CN106431037B (en) * | 2016-09-19 | 2018-07-06 | 哈尔滨工业大学 | A kind of method for improving alkali--activated slag cement and shrinking |
| CN106431037A (en) * | 2016-09-19 | 2017-02-22 | 哈尔滨工业大学 | Method for relieving shrinkage of alkali slag binding material |
| CN106517987A (en) * | 2016-11-22 | 2017-03-22 | 哈尔滨理工大学 | Micro-steel fiber reinforced alkali slag cementing material and preparation method |
| CN106746825A (en) * | 2016-11-24 | 2017-05-31 | 哈尔滨理工大学 | String enhancing alkali--activated slag cement and preparation method thereof |
| CN106630877A (en) * | 2016-12-22 | 2017-05-10 | 南京工业大学 | Alkaline-slag-based inorganic adhesive for bonding carbon fiber sheets |
| CN108756050A (en) * | 2018-07-27 | 2018-11-06 | 哈尔滨工业大学 | A kind of high temperature resistant brick setting and preparation method thereof |
| CN108756050B (en) * | 2018-07-27 | 2020-10-23 | 哈尔滨工业大学 | High-temperature-resistant brick masonry and preparation method thereof |
| CN110316984A (en) * | 2019-07-10 | 2019-10-11 | 安徽工业大学 | A kind of compound alkali-activated carbonatite solid waste type high shear force, refractory inorganic adhesive and preparation method thereof |
| CN110316984B (en) * | 2019-07-10 | 2021-05-28 | 安徽工业大学 | Composite alkali-excited solid waste type high-shearing-force high-temperature-resistant inorganic adhesive and preparation method thereof |
| CN110744882A (en) * | 2019-09-30 | 2020-02-04 | 曾小燕 | Preparation method of asphalt-based waterproof coiled material |
| CN114622681A (en) * | 2022-04-19 | 2022-06-14 | 哈尔滨理工大学 | Refractory fiber reinforced alkali slag cementing material thermal insulation wallboard and processing method thereof |
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