CN1238295C - High performance cement base self leveling material - Google Patents
High performance cement base self leveling material Download PDFInfo
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- CN1238295C CN1238295C CNB2004100530305A CN200410053030A CN1238295C CN 1238295 C CN1238295 C CN 1238295C CN B2004100530305 A CNB2004100530305 A CN B2004100530305A CN 200410053030 A CN200410053030 A CN 200410053030A CN 1238295 C CN1238295 C CN 1238295C
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- leveling material
- performance cement
- cement
- leveling
- slag
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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
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to high performance cement base self-leveling materials for a building engineering field. Each component and the weight percent thereof are: 25 to 35% of ordinary portland cement, 3.2 to 4.5% of fly ash, 0 to 3.0% of micro silicon powder, 2.8 to 4.0% of slag, 50 to 63% of building sand, 3.27 to 3.7% of expansion agent and 0.23 to 0.40% of high efficiency water reducing agent. The present invention has the advantages of wide raw material sources, low cost, reducible environmental pollution and cement quantity, energy saving, improved mixture fluidity, the reduced mixing quantity of chemical additive, reduced cost and environmental pollution and simple operation, and the water preserving capability of self-leveling mortar and strength and compactness after rigidification are improved. Materials after rigidification have the characteristics of high compactness, penetration resistance and cohesive force and good stability and water preserving capability.
Description
Technical field
What the present invention relates to is a kind of material of construction engineering technical field, specifically, relates to a kind of high-performance cement based self-leveling material that is used for floor leveling or building structure repairing and reinforcing.
Background technology
Ground is as an important integral part of building, and its quality has caused that people pay close attention to greatly.Building ground is when construction, the following common fault of normal appearance: because of trying to meet the deadline for the project or requiring to use starting material and working specification construction in accordance with regulations, or not maintenance in accordance with regulations, cross the people in morning, cross-operation causes ground relief, dusting, pitted skin, ground breaking-up etc., on the ground after completing, smear mortar or transhipment mortar and concrete, cause a lot of grey pimples in ground etc.Common in the past treatment process is with floor roughening, and then smears the thick mortar of one deck 2cm thereon, takes a lot of work, time-consuming, expense material, can not guarantee ground flat degree, has increased the deadweight of ground floor again.At the problems referred to above, flooring has traditionally been carried out once reform, a kind of new material---ground self-leveling material has been proposed.At first, self-leveling material mainly is a gypsum system, but its water tolerance is poor, and owing to be neutral or acid, reinforcing bar is had the danger of corrosion, thereby use range is restricted.So the development research of Self-Levelling Cement Materials draws attention in the world, and there is product to come out in succession.
Find through literature search prior art; Wang Xuesen etc. are at " Building technology exploitation " the 29th volume; the 4th phase 2002.4; P33-35 writes articles " low-heat Study on super automatic flowing mortar "; this article has proposed a kind ofly to be mainly used in the grouting reinforcing engineering by mixing the super automatic flowing mortar of granulated blast-furnace slag and silica flour in right amount, this gravity flowing levelling mortar since admixture a large amount of granulated blast-furnace slags; reduced hydration heat effectively, therefore avoided owing to the hydration temperature height causes shrinkage crack.But this kind gravity flowing levelling mortar should not be used for floor leveling.This in addition gravity flowing levelling mortar exist new sand cutting slurry divergence through the time loss big, anti-segregation, bleeding capacity are relatively poor, can not satisfy the requirement that mortar stirs transportation, pumping and construction fully, compare with traditional plastering mortar, starting material are had relatively high expectations, price is very expensive, and is difficult to big area and promotes the use of.
Summary of the invention
The objective of the invention is at having deficiency and defective in the prior art, a kind of high-performance cement based self-leveling material is provided, make it can be used for ground gravity flow levelling, the reinforcing and the repairing of once visited place face, dusting ground and the construct repairing of defective ground and some special building structures, suitably adjust the prescription and the production technique of this material, it can be used as the grouting material and uses.
The present invention is achieved by the following technical solutions, and each component of the present invention and weight percent thereof are:
Ordinary Portland cement 25～35%
Flyash 3.2～4.5%
SILICA FUME 0～3.0%
Slag 2.8～4.0%
Building sand 50～63%
Swelling agent 3.27～3.7%
High efficiency water reducing agent 0.23～0.40%
The present invention mixes packed forming by a certain percentage by ordinary Portland cement, flyash, slag, SILICA FUME, building sand, swelling agent and high efficiency water reducing agent.Mainly be to utilize commercially available common building material to realize high-performance cement based self-leveling material fundamental property:
1. adopt flyash, slag and SILICA FUME partly to replace silicate cement, utilize flyash and slag to improve the flowing property of mix, adopt SILICA FUME to improve water-retentivity and the raising gravity flowing levelling mortar intensity and the density of mix.Can greatly reduce cost like this, and reduce environmental pollution, effectively utilize refuse.Cement should be selected the silicate cement of 425. strength grades for use, and flyash should be selected I level flyash for use, and slag should be selected ground slag for use, and SILICA FUME should select for use Elken company to provide, about 0.01～0.1 μ m of its grain diameter.
2. adopt and meet the common building sand that JGJ52-92 " regular concrete sand quality standard and test method " requires, grating by strictness control sand with the sand classification after remix, with the flowability of improving mortar greatly and the consumption that reduces expensive organic admixture.The sand of using in the gravity flowing levelling mortar of the present invention should meet following particle diameter and grating requires:
2.500～5.000mm 0～6% (weight ratio)
1.250～2.500mm 20～35% (weight ratio)
0.315～1.250mm 55～65% (weight ratio)
＜0.315mm 10～15% (weight ratio)
The fineness modulus that is sand is in 2.7～2.9 scopes.
3. described swelling agent produces volumetric expansion by chemical reaction, thereby makes the drying shrinkage of mortar be compensated and make mortar more closely knit for mixing non-bleed type swelling agent calcium aluminate class.The volume of swelling agent should be controlled at the drying shrinkage that can compensate mortar and expansible scope, its volume are arranged slightly is 5～10% of gelling material.
4. described high efficiency water reducing agent is admixture naphthalenesulfonate series high-efficiency water-reducing agent powder among the present invention, and addition content is 0.50～1.2% of a gelling material.For making mortar can realize having bigger degree of mobilization, need mix an amount of high efficiency water reducing agent from levelling.
Preparation method of the present invention is: claim required ordinary Portland cement, flyash, slag, SILICA FUME, building sand, swelling agent and the high efficiency water reducing agent got by formula rate, stir in stirrer, form product, pack.During on-the-spot the use, add the mixing water of gelling material weight 40～45%.
The invention has the advantages that: use the routine building material, it is extensive to have raw material sources, the advantage that cost is low; In starting material, adopt flyash and slag partly to replace cement, be utilization of waste material on the one hand, can reduce pollution and minimizing cement consumption to environment, save energy, in addition on the one hand, adding coal ash and slag, utilize its glass microballon effect, improve the mix flowability, reduce the chemical admixture volume, reduce cost; Adopt SILICA FUME partly to replace cement, intensity and density after improving the gravity flowing levelling mortar water-retentivity and hardening; Packed bags with on-spot is mixed and stirred, and reduces environmental pollution, and is easy and simple to handle, realizes reducing cost of labor from levelling; Reach compensation and the effect of microdilatancy is arranged slightly by the non-bleed type of admixture swelling agent, make material after the sclerosis have the characteristics of high fine and close, high impervious, high cohesive force and stability, water-retentivity is good.
Embodiment
Provide following examples in conjunction with content of the present invention:
The high-performance cement based self-leveling mortar mixes sand by a certain percentage by ordinary Portland cement, flyash, slag, SILICA FUME, building sand, swelling agent and high efficiency water reducing agent and forms, according to the engineering application need, by adjusting the invention prescription, can obtain needed performance.
Embodiment 1
Ordinary Portland cement 25
Flyash 3.2
SILICA FUME 2.0
Slag 2.8
Building sand 63.0
Swelling agent 3.7
High efficiency water reducing agent 0.30
Said components gets high-performance cement based self-leveling mortar dry powder by aforementioned prepared, adds 0.45 tap water of gelling material quality, stirs, and it is as follows to record its performance:
Divergence is 280mm, ultimate compression strength (7 days) 38.5MPa, folding strength (7 days) 6.52MPa;
Ultimate compression strength (28 days) 59.3MPa, folding strength (28 days) 8.76MPa;
Rate of expansion 7 days: 0.024%, 28 day 0.026%, 56 day 0.027%
Embodiment 2
Ordinary Portland cement 30.0
Flyash 3.04
SILICA FUME 0
Slag 3.04
Building sand 60.0
Swelling agent 3.5
High efficiency water reducing agent 0.42
Said components gets high-performance cement based self-leveling mortar dry powder by aforementioned prepared, adds 0.45 tap water of gelling material quality, stirs, and it is as follows to record its performance:
Divergence is 290mm, ultimate compression strength (7 days) 34.0MPa, folding strength (7 days) 6.28MPa;
Ultimate compression strength (28 days) 50.5MPa, folding strength (28 days) 8.54MPa;
Rate of expansion 7 days: 0.026%, 28 day 0.028%, 56 day 0.029%
Embodiment 3 (being mass ratio in the example)
Ordinary Portland cement 35.0
Flyash 4.5
SILICA FUME 3.0
Slag 4.0
Building sand 50.0
Swelling agent 3.27
High efficiency water reducing agent 0.23
Said components gets high-performance cement based self-leveling mortar dry powder by aforementioned prepared, adds 0.45 tap water of gelling material quality, stirs, and it is as follows to record its performance:
Divergence is 290mm, ultimate compression strength (7 days) 37.0MPa, folding strength (7 days) 6.50MPa;
Ultimate compression strength (28 days) 60.5MPa, folding strength (28 days) 9.0MPa;
Rate of expansion 7 days: 0.025%, 28 day 0.028%, 56 day 0.030%
Claims (4)
1, a kind of high-performance cement based self-leveling material is characterized in that, each component and weight percent thereof are:
Ordinary Portland cement 25～35%
Flyash 3.2～4.5%
SILICA FUME 0～3.0%
Slag 2.8～4.0%
Building sand 50～63%
Swelling agent 3.27～3.7%
High efficiency water reducing agent 0.23～0.40%.
2, the described high-performance cement based self-leveling material of claim 1 is characterized in that, described building sand must meet following particle diameter and grating requires:
2.500～5.000mm 0～6% weight ratio
1.250～2.500mm 20～35% weight ratios
0.315～1.250mm 55～65% weight ratios
＜0.315mm 10～15% weight ratios.
3, the described high-performance cement based self-leveling material of claim 1 is characterized in that, it is Powdered that described high efficiency water reducing agent is that naphthalenesulfonate is.
4, the described high-performance cement based self-leveling material of claim 1 is characterized in that, described swelling agent is the calcium aluminate class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100530305A CN1238295C (en) | 2004-07-22 | 2004-07-22 | High performance cement base self leveling material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100530305A CN1238295C (en) | 2004-07-22 | 2004-07-22 | High performance cement base self leveling material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1587180A CN1587180A (en) | 2005-03-02 |
| CN1238295C true CN1238295C (en) | 2006-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100530305A Expired - Fee Related CN1238295C (en) | 2004-07-22 | 2004-07-22 | High performance cement base self leveling material |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318345C (en) * | 2005-10-09 | 2007-05-30 | 李凌伟 | Self-leveling cement and its production process |
| CN100462324C (en) * | 2007-02-08 | 2009-02-18 | 上海交通大学 | Powder coal ash expanding self-dense concrete for filling square steel pipe |
| CN100432003C (en) * | 2007-05-11 | 2008-11-12 | 计慷 | Flow by gravity evened material of fluorin silicon for guarding against electrostatic |
| CN101985392B (en) * | 2010-08-24 | 2012-10-24 | 江苏尼高科技有限公司 | Plastering mortar using high-volume slag and preparation method thereof |
| CN102503305B (en) * | 2011-10-27 | 2013-07-31 | 北京东方雨虹防水技术股份有限公司 | Injectable garbage covering material |
| CN105585281A (en) * | 2014-10-20 | 2016-05-18 | 天津林山水泥制品有限公司 | Corrosion-resistant cement fence and preparation method thereof |
| CN104402330B (en) * | 2014-11-04 | 2016-09-14 | 潍坊德霖建材科技有限公司 | One is dry mixed gravity flowing levelling mortar |
| CN104496320A (en) * | 2014-12-18 | 2015-04-08 | 南京工业大学 | Cement-based self-leveling mortar and preparation method thereof |
| 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 |
| CN105481316B (en) * | 2015-12-24 | 2017-10-03 | 邢台建工商品混凝土有限公司 | A kind of oil resistant oozes mortar and preparation method thereof |
| CN105622029A (en) * | 2015-12-25 | 2016-06-01 | 江苏蓝圈新材料有限公司 | Cement-based self-leveling mortar |
| CN106116421A (en) * | 2016-06-28 | 2016-11-16 | 浙江共创建材科技有限公司 | A kind of house ornamentation thick-layer gravity flowing levelling mortar and preparation method thereof |
| CN106587874A (en) * | 2016-11-22 | 2017-04-26 | 闫博文 | Method for preparing ground self-leveling mortar |
| CN109422506B (en) * | 2017-09-04 | 2021-07-13 | 山东路联交通材料有限公司 | Quick-setting and high-strength cement pavement maintenance material |
| CN112573870A (en) * | 2019-09-29 | 2021-03-30 | 华新水泥股份有限公司 | Self-leveling terrace material and preparation method thereof |
| CN113213862B (en) * | 2021-06-24 | 2024-02-09 | 山东业安建材有限公司 | Self-leveling super-early-strength rapid hardening material and preparation method thereof |
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