CN103086671A - Building structure reinforcing mortar - Google Patents
Building structure reinforcing mortar Download PDFInfo
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- CN103086671A CN103086671A CN2013100377060A CN201310037706A CN103086671A CN 103086671 A CN103086671 A CN 103086671A CN 2013100377060 A CN2013100377060 A CN 2013100377060A CN 201310037706 A CN201310037706 A CN 201310037706A CN 103086671 A CN103086671 A CN 103086671A
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Abstract
The invention belongs to the technical field of a building material, and particularly relates to building structure reinforcing mortar. The building structure reinforcing mortar comprises cement, slag, slag powder, ultra-fine fly ash, latex powder, dextrin, starch ether, a defoamer, and an amino sulfonate water reducer. The slag aggregate is specially processed in the invention. Therefore, the problem of poor mortar stability easily caused by common slag is effectively solved; and meanwhile, the strength of reinforcing the mortar is greatly improved. The product disclosed by the invention is high in strength, good in durability, economic and reasonable, and suitable for reinforcement projects of various buildings, bridges and roads.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of building structure strengthening mortar.
Background technology
Current, buildings and structures reinforcing and repairing task are heavy.Yet China still lacks corresponding product standard and utilisation technology rules so far, lacks the reinforcing mortar of special use on market, therefore, must and need in conjunction with China's building strengthening, reparation reality the proprietary material of exploitation excellent property.
Slag is the waste residue that produces in steelmaking process, and quantity discharged is about the 15%-20% of output of steel.The present invention as the gathering materials of reinforcement material, carries out organic assembling with cement, slag powders, superfined flyash, latex powder, dextrin, starch ethers, defoamer and sulfamate water reducer with slag, is prepared from.Institute's invention product has good application property, suitable intensity, volume stability and weather resistance, can satisfy different reinforcing needs, and product can with dry powder commodity mortar form supply market, have wide market outlook.
Summary of the invention
The object of the present invention is to provide a kind of mobility large, mobility keeps, and strength development is fast, and volume stability is good, the building structure strengthening mortar of good endurance.This reinforcing mortar is comprised of cement, slag, slag powders, superfined flyash, latex powder, dextrin, starch ethers, defoamer and sulfamate water reducer, and the weight ratio of each component is:
The better weight ratio of each component is:
In the present invention, described cement is a kind of in 42.5 grades of ordinary Portland cements or 52.5 grades of ordinary Portland cements.
In the present invention, described slag is through overheated stewing processing, and its particle size is less than or equal to 5mm.
In the present invention, described slag powders is a kind of in S75 slag powders or S95 slag powders.
In the present invention, described superfined flyash be particle diameter less than or equal to 20 μ m,, specific surface area is more than or equal to 850m
2The flyash of/kg.
In the present invention, described latex powder is acrylic latex powder.
In the present invention, described dextrin is white solid.
In the present invention, the water-reducing rate of described sulfamate is more than or equal to 14%.
The present invention propose take the structural strengthening material preparation method of slag as gathering materials, concrete steps are: take each component by aforementioned each part by weight, cement, slag, slag powders, superfined flyash, latex powder, dextrin, starch ethers, defoamer and sulfamate water reducer are passed through mechanical stirring, be mixed to uniform state, namely get desired product.
The using method of the building reinforce mortar that the present invention proposes, concrete steps are as follows:
Accurately take building reinforce mortar and water, first water is added stirrer, in the situation that blade of stirrer begins to rotate, will reinforce mortar and at the uniform velocity drop into stirrer.Standing 5min after stirring 3min namely can be used for construction.Amount of water is the 15%-35% of product weight of the present invention.
In the present invention, cement is as main bonding component, and slag powders and superfined flyash form the plural gel system as adulterant together with cement.Mix latex powder and be force of cohesion and snappiness in order to improve system.The effect of dextrin and starch ethers is water-keeping thickening and prevents the layering of emanating, and improves workability and the homogeneity of system.Adding of sulfamate water reducer can reduce the system water consumption, improves its rheological and plasticity-, and its intensity is improved, and reduces and shrinks, prolongs life.Defoamer add the bubble that is to eliminate in mortar, improve intensity, improve apparent property.
The slag wear resistance is good, and volume is large, and intensity is high, and the performance index such as water-absorbent, freezing-thawing resistance etc. are all fine, is used for doing to gather materials, and can greatly improve intensity and the non-deformability of reinforcing mortar.
The present invention is a kind of building structure strengthening material, and its degree of mobilization is large, and the fluidity loss rate is little, have good workability and application property, be convenient to improve to produce and operating efficiency, and to adopt in a large number trade waste be starting material, have very high environmental benefit and social benefit.Product of the present invention can be produced for slag processing factory and reinforcement material factory.
Embodiment
Further illustrate the present invention below by embodiment.
Embodiment 1
A kind of building structure strengthening mortar, by 42.5 grades of ordinary Portland cements 100, slag 55, S75 slag powders 15, superfined flyash 5, latex powder 1, dextrin 1.0, starch ethers 0.3, defoamer 0, the weight ratio of sulfamate water reducer 0.12 is formulated.After adding water and stir by 35% of reinforcement material gross weight, its degree of mobilization is 230mm, and the 1h rate of loss is 8%, 3 days ultimate compression strength is 32.5MPa, and 28 days ultimate compression strength is 60.0MPa, and 28 days folding strengths are 9.5MPa, 28 days tensile bond strengths are 0.7MPa, and shrinking percentage was 0.065% in 28 days.
Embodiment 2
A kind of building structure strengthening mortar, by 52.5 grades of ordinary Portland cements 100, slag 510, S95 slag powders 40, superfined flyash 12, latex powder 6, dextrin 0.2, starch ethers 1.2, defoamer 0.13, the weight ratio of Sulfamic acid water reducing agent 1.30 is formulated.After adding water and stir by 15% of reinforcement material gross weight, its degree of mobilization is 250mm, and the 1h rate of loss is 7%, 3 days ultimate compression strength is 35.8MPa, and 28 days ultimate compression strength is 65.0MPa, and 28 days folding strengths are 10.5MPa, 28 days tensile bond strengths are 0.9MPa, and shrinking percentage was 0.060% in 28 days.
Embodiment 3
A kind of building structure strengthening mortar, by 52.5 grades of ordinary Portland cements 100, slag 320, S95 slag powders 28, superfined flyash 11, latex powder 4, dextrin 0.8, starch ethers 1.0, defoamer 0.06, the weight ratio of Sulfamic acid water reducing agent 1.05 is formulated.After adding water and stir by 18% of reinforcement material gross weight, its degree of mobilization is 290mm, and the 1h rate of loss is 6%, 3 days ultimate compression strength is 38.4MPa, and 28 days ultimate compression strength is 70.0MPa, and 28 days folding strengths are 11.0MPa, 28 days tensile bond strengths are 0.7MPa, and shrinking percentage was 0.054% in 28 days.
Embodiment 4
A kind of building structure strengthening mortar, by 52.5 grades of ordinary Portland cements 100, slag 320, S95 slag powders 28, superfined flyash 11, latex powder 4, dextrin 0.8, starch ethers 1.0, defoamer 0.06, the weight ratio of Sulfamic acid water reducing agent 1.05 is formulated.The yellow ground of identical volume be aggregate reinforcement material by comparison, after adding water and stir by 18% of reinforcement material gross weight, degree of mobilization is 225mm, the 1h rate of loss is 8%, 3 days ultimate compression strength is 33.2MPa, and 28 days ultimate compression strength is 64.0MPa, and 28 days folding strengths are 10.2MPa, 28 days tensile bond strengths are 0.6MPa, and shrinking percentage was 0.14% in 28 days.Reinforce mortar take the slag of special processing as aggregate not only effectively utilizes Industrial Solid Waste, also reduced to reinforce the shrinking percentage of mortar, improved the intensity of reinforcing mortar.
Above-described embodiment is interpreted as only being used for explanation the present invention and is not used in restriction protection scope of the present invention.After the content of having read the present invention's record, those skilled in the art can make various changes or modifications the present invention, and these equivalences change and modification falls into claim limited range of the present invention equally.
Claims (8)
1. a building structure strengthening mortar, is characterized in that, this building reinforce mortar is comprised of cement, slag, slag powders, superfined flyash, latex powder, dextrin, starch ethers, defoamer and sulfamate water reducer, and the weight ratio of each component is:
2. building structure strengthening mortar according to claim 1, is characterized in that, the better weight ratio of each component is:
3. building structure strengthening mortar according to claim 1 and 2, is characterized in that, described cement is a kind of in 42.5 grades of ordinary Portland cements or 52.5 grades of ordinary Portland cements.
4. building structure strengthening mortar according to claim 1 and 2, is characterized in that, described slag is the slag through overheated stewing processing, and its particle is the continuous grading less than or equal to 5mm.
5. building structure strengthening mortar according to claim 1 and 2, is characterized in that, described slag powders is a kind of in S75 slag powders or S95 slag powders.
6. building structure strengthening mortar according to claim 1 and 2, is characterized in that, the granularity of described superfined flyash is less than or equal to 20 μ m, and specific surface area is more than or equal to 850m
2/ kg.
7. building structure strengthening mortar according to claim 1 and 2, is characterized in that, described latex powder is acrylic latex powder.
8. building structure strengthening mortar according to claim 1 and 2, is characterized in that, the water-reducing rate of described sulfamate is more than or equal to 14%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037706.0A CN103086671B (en) | 2013-01-30 | 2013-01-30 | Building structure reinforcing mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037706.0A CN103086671B (en) | 2013-01-30 | 2013-01-30 | Building structure reinforcing mortar |
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| CN103086671A true CN103086671A (en) | 2013-05-08 |
| CN103086671B CN103086671B (en) | 2015-05-27 |
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| CN201310037706.0A Active CN103086671B (en) | 2013-01-30 | 2013-01-30 | Building structure reinforcing mortar |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819159A (en) * | 2014-01-20 | 2014-05-28 | 同济大学 | Ground mortar using bentonite and dextrin as water-retention and thickening materials and using method thereof |
| CN104609767A (en) * | 2015-02-05 | 2015-05-13 | 江苏苏博特新材料股份有限公司 | Cement hydration rate regulating material as well as preparation method and application of cement hydration rate regulating material |
| CN105503090A (en) * | 2015-12-31 | 2016-04-20 | 葛洲坝武汉道路材料有限公司 | Grade-G85 steel and iron slag micropowder cement-based cementing material and manufacturing method thereof |
| CN109437740A (en) * | 2018-11-28 | 2019-03-08 | 上海宝田新型建材有限公司 | A kind of high permeable wear-resisting type pervious concrete and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560084A (en) * | 2009-06-02 | 2009-10-21 | 河北科技大学 | Environmental-friendly waterproof polymer mortar |
-
2013
- 2013-01-30 CN CN201310037706.0A patent/CN103086671B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560084A (en) * | 2009-06-02 | 2009-10-21 | 河北科技大学 | Environmental-friendly waterproof polymer mortar |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819159A (en) * | 2014-01-20 | 2014-05-28 | 同济大学 | Ground mortar using bentonite and dextrin as water-retention and thickening materials and using method thereof |
| CN103819159B (en) * | 2014-01-20 | 2015-11-04 | 同济大学 | A kind of with wilkinite and dextrin be water-keeping thickening material ground mortar and using method thereof |
| CN104609767A (en) * | 2015-02-05 | 2015-05-13 | 江苏苏博特新材料股份有限公司 | Cement hydration rate regulating material as well as preparation method and application of cement hydration rate regulating material |
| CN105503090A (en) * | 2015-12-31 | 2016-04-20 | 葛洲坝武汉道路材料有限公司 | Grade-G85 steel and iron slag micropowder cement-based cementing material and manufacturing method thereof |
| CN109437740A (en) * | 2018-11-28 | 2019-03-08 | 上海宝田新型建材有限公司 | A kind of high permeable wear-resisting type pervious concrete and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN103086671B (en) | 2015-05-27 |
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