CN104478349A - Early strength high wear-resisting self-leveling mortar used for ground repairing and preparation method thereof - Google Patents
Early strength high wear-resisting self-leveling mortar used for ground repairing and preparation method thereof Download PDFInfo
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- CN104478349A CN104478349A CN201410650380.3A CN201410650380A CN104478349A CN 104478349 A CN104478349 A CN 104478349A CN 201410650380 A CN201410650380 A CN 201410650380A CN 104478349 A CN104478349 A CN 104478349A
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Abstract
The invention discloses an early strength high wear-resisting self-leveling mortar used for ground repairing and a preparation method thereof, and the early strength high wear-resisting self-leveling mortar comprises the following components by weight: 35%-40% of P.052.5 ordinary portland cement; 15%-20% of a mineral admixture; 40%-55% of quartz sand or carborundum; 4%-6% of a special anti cracking agent; 0.5%-1% of an imported organic binder; 0.3%-0.5% of an inorganic salt strength enhancer; 0.1%-0.2% of an organic defoaming agent; 0.2%-0.4% of a high performance water reducing agent; 0.2%-0.4% of stabilizer cellulose; and 0.2%-0.5% of an erosion resistant additive. The early strength high wear-resisting self-leveling mortar is applied to construction by self leveling technology, can reduce the human, financial and material resources, is remarkable in economic benefit, is added with the high proportion of mineral admixture, is environmentally-friendly, utilizes industrial waste, is significant in social benefits and good in wear resistance, can be used for high wear resistance requirement ground, is good in corrosion resistance, and can be used for the ground in heavy chloride sulfate corrosion environment.
Description
Technical field
The present invention relates to a kind of dry-mix and preparation method thereof, be specifically related to a kind of strong high abrasion gravity flowing levelling mortar and preparation method thereof morning repaired for ground.
Background technology
Since 20 century 70s, the developed countries such as Japan and America and Europe in succession research and develop and produce gravity flow flat ground material, and are widely used.First by residences in Japan community, fundamental research has been done to gypsum-based self-leveling material at 1972-1973, construction test was carried out, existing gypsum-based self-leveling material commodity selling in 1977 to the gypsum-based self-leveling material that employing alpha-semi water plaster stone is base-material in 1976.The Pa Yiailuo company II type dehydrated gyp-of West Germany produces the self-leveling material that intensity is 20-30MPa, laying depth 10mm subsequently.American Gypsum cement company once adopted α, β-gypsum mixtures, obtained the flat material of pumping automatic flowing after adding people's aggregate at the scene.At present, gypsum-based self-leveling material has been applied on the ground of the buildingss such as commercial mansion, teaching building, condominium, but due to gypsum-based self-leveling material water tolerance poor, in neutral or acid, ironware is had to the danger of corrosion, thus use range is restricted.Along with the development of modern industry,, intensity etc. corrosion-resistant, dust-proof to production plant ground is had higher requirement, there is organic polymer system gravity flow flat ground material, as floor materials such as epoxy resin, polyurethanes, vinylformic acid (being cross-linked) classes.But, because solvent type epoxy floor material can discharge a certain amount of volatile organic matter (VOC) in production, construction and solidification process, harmful HUMAN HEALTH, along with to the pay attention to day by day of environmental protection and the raising of cement-based self-leveling material performance, cement-based self-leveling material starts to manifest the advantage larger than epoxy floor material at industrial ground.Nineteen eighty-two, Japan starts to occur cement-based self-leveling earth material, and because of its purposes wide, consumption is large, steady quality, commercially obtain and develop rapidly and admit widely, other developed country has also released one after another the cement-based self-leveling earth material of various brand, is particularly the countries and regions of representative with America and Europe.Current American-European countries and Japan are quite ripe in cement-based self-leveling material development and application, range of application is very wide, application quantity is also very large, according to data statistics, the application of cement-based self-leveling material in terrace industry in Europe has reached 1,500,000 tons/year, 100000000 square meters, wherein the consumption of Germany is at about 270,000 tons/year, and application area is at 2,000 ten thousand square meters.
At present, there is poor-performing and problem of less types in China's cement-based self-leveling mortar.The consequence brought because low, the surperficial ashing wear resistance of gravity flowing levelling mortar early strength is not enough is almost can not using the surface layer of gravity flowing levelling mortar as terrace, and can only re-use epoxy resin gravity flowing levelling mortar or other earth material as ornament layer on Self-leveling screed-coat.Although use epoxy resin gravity flowing levelling mortar to have good mobility, surface quality advantages of higher, it is higher to the requirement of base material and construction, and expensive.The cement-based self-leveling mortar of domestic current production is generally coventional type, lacks within 2 ~ 6 hours, can go up people and to walk rapid-hardening self-leveling mortar, industrial abrasion-resistant ground self-leveling material, high performance self-leveling material etc.Therefore develop high quality, economic fast hydraulic cement based self-leveling mortar has actual engineering practical value.
Existing mortar is early strong for realizing it simultaneously, often needs various cement to mix, and makes finished product be not easy to control.Wear no resistance, corrosion-resistant.
At present, the cement-based self-leveling mortar product ubiquity early strength on market is low, and the phenomenons such as efflorescence, dusting, cracking easily appear in surface.Many on starting material is base material by special cement, high expensive.
Summary of the invention
For solving the problem, the invention provides a kind of strong high abrasion gravity flowing levelling mortar and preparation method thereof morning repaired for ground, do not use rapid hardening cement, by utilizing organic and inorganic chemistry auxiliary agent, only using ordinary portland cement, gather materials, in mineral admixture and additive situation, through assay optimization, obtain optimised process proportioning, realize this gravity flowing levelling mortar early strength high, good cohesive strength, higher erosion resistance, high-wearing feature feature.In addition, the present invention, ensureing that mortar has comparatively under high early strength, mixes industrial waste flyash or slag powders in a large number in starting material, improves the serviceability of mortar, also reduce the energy and the resource consumption of product, the greenization for product opens a new way simultaneously.
For achieving the above object, the technical scheme that the present invention takes is:
For strong high abrasion gravity flowing levelling mortar morning that ground is repaired, be prepared from by the component of following mass percent:
Described mineral admixture is the mixture of flyash and dicalcium powder, or the mixture of breeze and dicalcium powder, described quartz sand or silicon carbide are 20 ~ 70 orders, dicalcium powder is 800 orders, described extraordinary anti-fissuring agent is modification UEA swelling agent, described import organic binder bond is for being import latex powder, described inorganic salt strength promoter is: Quilonum Retard, described organic defoamer is modified dimethyl polysiloxane class, described high-performance water reducing agent to be concentration be 40% high performance water reducing agent of polyocarboxy acid, described stablizer is the mixture of the Walocel MT 20.000PV of 0.2% ~ 0.4% and the wood fibre of 0.1% ~ 0.2%, described anti-erosion additive is import efficient preservative.
Wherein, described flyash and the mixture of dicalcium powder are 2 with the ratio of P.052.5 ordinary Portland cement: (3.5 ~ 4).
Wherein, the mixture of breeze and dicalcium powder is 1.5 with the ratio of P.052.5 ordinary Portland cement: (3.5 ~ 4).
Wherein, quartz sand or silicon carbide can adopt following ratio to mix: 20 ~ 40 order particle diameters of 70% and 40 ~ 70 order particle diameters of 30% used in combination, or directly use 20 ~ 70 orders to be suitable for grating sand.
Wherein, described 0.3% ~ 0.5% inorganic salt strength promoter can substitute with the potassium aluminium sulfate of 3% ~ 5%.
Above-mentioned a kind of strong high abrasion gravity flowing levelling mortar morning for ground repairing is prepared by the following method:
S1, by mass percent component according to claim 1, cement, mineral admixture, extraordinary anti-fissuring agent, stablizer and import organic binder bond and organic defoamer are placed in whipping appts mix and blend 5 ~ 8 minutes, obtain mixture;
S2, by mass percent component according to claim 1 by high-performance water reducing agent adopt spraying form be slowly evenly sprayed on the mixture of step S1 gained, spray time is no less than 2 minutes, do not stop in spray process stirring, ensure that high-performance water reducing agent is uniformly dispersed in powder;
S3, by mass percent component according to claim 1, inorganic salt strength promoter, anti-erosion additive, quartz sand or silicon carbide are added in the mixture of step S2 gained, continue stirring and make it fully mix after 10 ~ 15 minutes, get product.Before using, mixture must be accomplished waterproof and dampproof, in use, the gravity flowing levelling mortar finished product that the present invention is obtained and water used in combination in the ratio of 100: 18.
The present invention has following beneficial effect: adopt Self-leveling construction technology, reduces manpower, financial resources and material resources, remarkable in economical benefits; Add a high proportion of mineral admixture, environmental protection and waste utilization, social benefit is remarkable; Wear resistance is good, can be used for wear resistance and requires high ground; Good corrosion resistance, can be used for the ground of villaumite, the heavier environment of sulphate corrosion.
Embodiment
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In following examples, the raw material used is as follows:
Described mineral admixture is the mixture of flyash and dicalcium powder, or the mixture of breeze and dicalcium powder, described quartz sand or silicon carbide are 20 ~ 70 orders, dicalcium powder is 800 orders, described extraordinary anti-fissuring agent is modification UEA swelling agent, described import organic binder bond is for being import latex powder, described inorganic salt strength promoter is: Quilonum Retard (0.3% ~ 0.5%) or potassium aluminium sulfate (3% ~ 5%), described organic defoamer is modified dimethyl polysiloxane class, described high-performance water reducing agent is the high performance water reducing agent of polyocarboxy acid of 40% concentration, described stablizer is Walocel MT 20.000PV (0.2% ~ 0.4%) and wood fibre (0.1% ~ 0.2%), described anti-erosion additive is import efficient preservative.
Embodiment 1
To P.052.5 ordinary Portland cement 35kg, mineral admixture 15kg (wherein dicalcium powder 10kg, slag powders 5kg), extraordinary anti-fissuring agent 4kg, import organic binder bond 0.5kg, organic defoamer 0.1kg, stablizer Mierocrystalline cellulose 0.2kg, be placed in whipping appts mix and blend 5 minutes, obtain mixture; Adopt the form of spraying to be slowly evenly sprayed on the mixture of gained 0.4kg high-performance water reducing agent, spray time is no less than 2 minutes, does not stop stirring in spray process, ensures that high-performance water reducing agent is uniformly dispersed in powder; Add inorganic salt strength promoter 0.3kg, quartz sand 45kg (wherein 20 ~ 40 order 31.5kg, 40 ~ 70 order 13.5kg), anti-erosion additive 0.2kg, continue stirring and make it fully mix after 10 minutes, can use, abundant mixing, stirs after 10 minutes, gets product.
Embodiment 2
To P.052.5 ordinary Portland cement 35kg, mineral admixture 20kg (wherein dicalcium powder 10kg, flyash 10kg), extraordinary anti-fissuring agent 6kg, import organic binder bond 1kg, organic defoamer 0.2kg, stablizer Mierocrystalline cellulose 0.4kg, be placed in whipping appts mix and blend 8 minutes, obtain mixture; Adopt the form of spraying to be slowly evenly sprayed on the mixture of gained 0.4kg high-performance water reducing agent, spray time is no less than 2 minutes, does not stop stirring in spray process, ensures that high-performance water reducing agent is uniformly dispersed in powder; Add inorganic salt strength promoter 0.5kg, silicon carbide 40kg (wherein 20 ~ 40 order 28kg, 40 ~ 70 order 12kg), anti-erosion additive 0.5kg, continue stirring and make it fully mix after 15 minutes, get product.
Embodiment 3
To P.052.5 ordinary Portland cement 37.5kg, mineral admixture 17.5kg (wherein dicalcium powder 10kg, flyash 7.5kg), extraordinary anti-fissuring agent 5kg, import organic binder bond 0.75kg, organic defoamer 0.15kg, stablizer Mierocrystalline cellulose 0.3kg, be placed in whipping appts mix and blend 6.5 minutes, obtain mixture; Adopt the form of spraying to be slowly evenly sprayed on the mixture of gained 0.3kg high-performance water reducing agent, spray time is no less than 2 minutes, does not stop stirring in spray process, ensures that high-performance water reducing agent is uniformly dispersed in powder; Add inorganic salt strength promoter 0.4kg, quartz sand 20kg (20 ~ 70 order mixing), silicon carbide 20kg (20 ~ 70 order mixing), anti-erosion additive 0.35kg, continuing stirring made it fully mix after 10 ~ 15 minutes, got product.
After testing, the mortar mobility of embodiment 1-3 gained, early stage and 28 days intensity all exceed the requirement of national JC/T985; Wear resistance is higher, lower than 0.2 gram; Coefficient against corrosion is higher, all more than 0.9.
In sum, this concrete enforcement adopts Self-leveling construction technology, reduces manpower, financial resources and material resources, remarkable in economical benefits; Add a high proportion of mineral admixture, environmental protection and waste utilization, social benefit is remarkable; Wear resistance is good, can be used for wear resistance and requires high ground; Good corrosion resistance, can be used for the ground of villaumite, the heavier environment of sulphate corrosion.
The above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; can make some improvement and adjustment according to used raw material and purity difference, these improve and adjustment also should be considered as protection scope of the present invention.
Claims (6)
1., for strong high abrasion gravity flowing levelling mortar morning that ground is repaired, it is characterized in that, be prepared from by the component of following mass percent:
Described mineral admixture is the mixture of flyash and dicalcium powder, or the mixture of breeze and dicalcium powder, described quartz sand or silicon carbide are 20 ~ 70 orders, dicalcium powder is 800 orders, described extraordinary anti-fissuring agent is modification UEA swelling agent, described import organic binder bond is for being import latex powder, described inorganic salt strength promoter is: Quilonum Retard, described organic defoamer is modified dimethyl polysiloxane class, described high-performance water reducing agent to be concentration be 40% high performance water reducing agent of polyocarboxy acid, described stablizer is the mixture of the Walocel MT 20.000PV of 0.2% ~ 0.4% and the wood fibre of 0.1% ~ 0.2%, described anti-erosion additive is import efficient preservative.
2. a kind of strong high abrasion gravity flowing levelling mortar morning repaired for ground according to claim 1, is characterized in that, described flyash and the mixture of dicalcium powder are 2 with the ratio of P.052.5 ordinary Portland cement: (3.5 ~ 4).
3. a kind of strong high abrasion gravity flowing levelling mortar morning repaired for ground according to claim 1, is characterized in that, the mixture of breeze and dicalcium powder is 1.5 with the ratio of P.052.5 ordinary Portland cement: (3.5 ~ 4).
4. a kind of strong high abrasion gravity flowing levelling mortar morning repaired for ground according to claim 1, it is characterized in that, quartz sand or silicon carbide can adopt following ratio to mix: 20 ~ 40 order particle diameters of 70% and 40 ~ 70 order particle diameters of 30% used in combination, or directly use 20 ~ 70 orders to be suitable for grating sand.
5. a kind of strong high abrasion gravity flowing levelling mortar morning repaired for ground according to claim 1, is characterized in that, described 0.3% ~ 0.5% inorganic salt strength promoter can substitute with the potassium aluminium sulfate of 3% ~ 5%.
6. the preparation method of a kind of strong high abrasion gravity flow morning gravity flowing levelling mortar repaired for ground as claimed in claim 1, is characterized in that, comprise the steps:
S1, by mass percent component according to claim 1, cement, mineral admixture, extraordinary anti-fissuring agent, stablizer and import organic binder bond and organic defoamer are placed in whipping appts mix and blend 5 ~ 8 minutes, obtain mixture;
S2, by mass percent component according to claim 1 by high-performance water reducing agent adopt spraying form be slowly evenly sprayed on the mixture of step S1 gained, spray time is no less than 2 minutes, do not stop in spray process stirring, ensure that high-performance water reducing agent is uniformly dispersed in powder;
S3, by mass percent component according to claim 1, inorganic salt strength promoter, anti-erosion additive, quartz sand or silicon carbide are added in the mixture of step S2 gained, continue stirring and make it fully mix after 10 ~ 15 minutes, get product.
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Cited By (8)
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| CN105236894A (en) * | 2015-10-29 | 2016-01-13 | 华南理工大学 | Anti-shrinkage self-leveling mortar with good self-healing property for bedding layer and preparation method thereof |
| CN106187057A (en) * | 2016-07-04 | 2016-12-07 | 德清扬泰建筑材料有限公司 | A kind of cement-based self-leveling dry powder and mortar and preparation method thereof |
| CN106365558A (en) * | 2016-08-30 | 2017-02-01 | 派丽(上海)管理有限公司 | Self-levelling mortar with waterproof function |
| CN106746956A (en) * | 2016-11-25 | 2017-05-31 | 河池永固混凝土有限责任公司 | Rapid-Repair polymer mortar |
| CN106738270A (en) * | 2016-11-21 | 2017-05-31 | 哈尔滨工业大学 | Method using nature aquation method control Concrete Material upper surface level is intervened |
| CN106746954A (en) * | 2016-11-25 | 2017-05-31 | 河池永固混凝土有限责任公司 | Polymer modification mending mortar |
| CN111153661A (en) * | 2020-01-10 | 2020-05-15 | 深圳市蛇口招商港湾工程有限公司 | Sulphoaluminate cement-based material for ocean repairing protection engineering and preparation method thereof |
| CN111484296A (en) * | 2020-05-09 | 2020-08-04 | 湖南省富民乐建材科技发展有限公司 | Self-leveling formula and leveling process thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105236894A (en) * | 2015-10-29 | 2016-01-13 | 华南理工大学 | Anti-shrinkage self-leveling mortar with good self-healing property for bedding layer and preparation method thereof |
| CN106187057A (en) * | 2016-07-04 | 2016-12-07 | 德清扬泰建筑材料有限公司 | A kind of cement-based self-leveling dry powder and mortar and preparation method thereof |
| CN106365558A (en) * | 2016-08-30 | 2017-02-01 | 派丽(上海)管理有限公司 | Self-levelling mortar with waterproof function |
| CN106738270A (en) * | 2016-11-21 | 2017-05-31 | 哈尔滨工业大学 | Method using nature aquation method control Concrete Material upper surface level is intervened |
| CN106746956A (en) * | 2016-11-25 | 2017-05-31 | 河池永固混凝土有限责任公司 | Rapid-Repair polymer mortar |
| CN106746954A (en) * | 2016-11-25 | 2017-05-31 | 河池永固混凝土有限责任公司 | Polymer modification mending mortar |
| CN111153661A (en) * | 2020-01-10 | 2020-05-15 | 深圳市蛇口招商港湾工程有限公司 | Sulphoaluminate cement-based material for ocean repairing protection engineering and preparation method thereof |
| CN111153661B (en) * | 2020-01-10 | 2021-10-08 | 深圳市蛇口招商港湾工程有限公司 | Sulphoaluminate cement-based material for ocean repairing protection engineering and preparation method thereof |
| CN111484296A (en) * | 2020-05-09 | 2020-08-04 | 湖南省富民乐建材科技发展有限公司 | Self-leveling formula and leveling process thereof |
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Address after: 110005 Heping 88 South Avenue, Heping District, Liaoning, Shenyang Patentee after: Liaoning Construction Science Research Institute Co Ltd Address before: 110005 Heping 88 South Avenue, Heping District, Liaoning, Shenyang Patentee before: Architectural Science Research Inst., Liaoning Prov. |