CN105503063A - Anti-crack agent used for Portland cement fiberboards - Google Patents
Anti-crack agent used for Portland cement fiberboards Download PDFInfo
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- CN105503063A CN105503063A CN201511026223.6A CN201511026223A CN105503063A CN 105503063 A CN105503063 A CN 105503063A CN 201511026223 A CN201511026223 A CN 201511026223A CN 105503063 A CN105503063 A CN 105503063A
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- Prior art keywords
- crack resistence
- parts
- portland cement
- resistence agent
- agent
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an anti-crack agent used for Portland cement fiberboards. The anti-crack agent is characterized by at least comprising green vitriol, pure acrylic elastic emulsion, anhydrous cupric sulfate, magnesium oxide and polypropylene fibers. The anti-crack agent has the beneficial effects that when the cement fiberboards are produced, the cement fiberboards containing the anti-crack agent used for Portland cement fiberboards have low volume shrinkage and can not crack permanently; the impermeable pressure of the anti-crack agent doped cement fiberboards is 0.9MPa while the impermeable pressure of the cement fiberboards without the anti-crack agent is only 0.7MPa; the anti-crack agent has good waterproof effects, also has certain compact effects on the cement fiberboards, can conduce to improving the compressive strength of the cement fiberboards and has good anti-crack effects, antifreeze and anti-impact properties and wear and shock resistance.
Description
Technical field
The present invention relates to building material field, particularly a kind of crack resistence agent for Portland cement fiberboard.
Background technology
Cement fibrolite plate, also known as fiber cement board.Be with siliceous, calcareous material for main raw material, add vegetable fibre, through slurrying, copy get, pressurize, a kind of New Building Materials of maintenance.The cement fibrolite plate produced through high pressure is fiber cement board pressure again, and the non-pressurized cement fibrolite plate of its Performance Ratio is better.Ordinary Portland cement, when Fibreboard Production, easily cracks, and has a strong impact on quality product.
Crack resistence agent is also known as anti-fissuring agent, anti-fissuring agent is organic polymer mixed emulsion, make full use of the physical and chemical changes mechanism in sand-cement slurry and concrete curing process, the pulvis of chemical industry synthesis, carry out anticracking, cracking resistance from physics and chemistry two aspect, sand-cement slurry and concrete intensity can be significantly improved.Anti-fissuring agent can efficiently solve due to styrofoam smooth surface, do not absorb water and cause surface plastering difficulty, and the problem such as easy to crack, anti-fissuring agent is added in sand-cement slurry and concrete, the generation of mortar and concrete crackle and hollowing phenomenon can be reduced widely, increase mortar strength, improve construction quality.It is greatly dry-shrinkage deformed that anti-fissuring agent solves conventional cement mortar, the problems such as impermeability, splitting resistance, frost resistance difference, directly mix the crack problem of plastic shrinkage and the segregation generation that effectively can control mortar concrete in cement, greatly improve the resistance to cleavage of mortar concrete, freeze proof shock resistance and wear-resisting shock resistance.
, still there is result of use not good in existing anti-fissuring agent, the shortcoming that resistance to cleavage, freeze proof shock resistance and wear-resisting shock resistance are not good.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of crack resistence agent for Portland cement fiberboard, thus it is not good to overcome existing crack resistence agent result of use, the shortcoming that resistance to cleavage, freeze proof shock resistance and wear-resisting shock resistance are not good.
For achieving the above object, the invention provides a kind of crack resistence agent for Portland cement fiberboard, it is characterized in that, described crack resistence agent at least comprises: iron vitriol, elastic pure acrylic acid emulsion, anhydrous cupric sulfate, magnesium oxide and polypropylene fibre.
Preferably, in technique scheme, count by weight, described crack resistence agent at least comprises: iron vitriol 1-3 part, elastic pure acrylic acid emulsion 1-3 part, anhydrous cupric sulfate 0.05-0.1 part, magnesium oxide 0.1-1 part and polypropylene fibre 1-2 part.
Preferably, in technique scheme, described crack resistence agent comprises: dihydrate gypsum, calcium oxide, trolamine and ether of cellulose.
Preferably, in technique scheme, count by weight, described crack resistence agent comprises: dihydrate gypsum 5-10 part, calcium oxide 1-3 part, trolamine 0.05-0.1 part and ether of cellulose 1-5 part.
Preferably, in technique scheme, described ether of cellulose is one or more in hydroxyethylmethyl-cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, Natvosol, Vltra tears.
Preferably, in technique scheme, in use, the mass ratio of described crack resistence agent and Portland cement fiberboard is 1-3:100.
Preferably, in technique scheme, described cement fibrolite plate, meter comprises following component by weight: Portland cement 60-70 part, flyash 6-7 part, wood chip 9-12 part, water 3-6 part and water reducer 1.2-1.4 part.
Preferably, in technique scheme, described water reducer at least comprises: naphthalenesulfonate formaldehyde condensation compound, phenol, sodium hydroxide, sugared calcium, Trisodium Citrate.
Preferably, in technique scheme, described water reducer comprises: sodium lignosulfonate, sulfonated melamine compound resin, iron protocarbonate, calcium sulphoaluminate, polyvinyl alcohol, thiosinamine.
Preferably, in technique scheme, count by weight, described water reducer comprises: naphthalenesulfonate formaldehyde condensation compound 20-30 part, phenol 5-10 part, sodium hydroxide 1-5 part, sugared calcium 1-5 part, Trisodium Citrate 5-10 part, sodium lignosulfonate 10-15 part, sulfonated melamine compound resin 10-15 part, iron protocarbonate 1-5 part, calcium sulphoaluminate 5-10 part, polyvinyl alcohol 10-15 part, thiosinamine 1-5 part.
Compared with prior art, the present invention has following beneficial effect: when producing cement fibrolite plate, adds the crack resistence agent that the present invention is used for Portland cement fiberboard, cement fibrolite plate volumetric shrinkage can be made little, can prolongedly not split.The cement fibrolite plate impermeability pressure being doped with crack resistence agent reaches 0.9MPa, and the cement fibrolite plate impermeability pressure not adding crack resistence agent only has 0.7MPa.Adopt crack resistence agent of the present invention to have good waterproof action, have certain densification to cement fibrolite plate simultaneously, the ultimate compression strength of cement fibrolite plate can be improved.There is good effect of prestressed, freeze proof shock resistance and wear-resisting shock resistance.
Embodiment
Below in conjunction with specific embodiment, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Embodiment 1
A kind of crack resistence agent for Portland cement fiberboard, count by weight, described crack resistence agent comprises: iron vitriol 2 parts, elastic pure acrylic acid emulsion 2 parts, anhydrous cupric sulfate 0.08 part, 0.5 part, magnesium oxide, polypropylene fibre 2 parts, dihydrate gypsum 8 parts, 1 part, calcium oxide, trolamine 0.08 part, Natvosol 4 parts.
In use, the mass ratio of described crack resistence agent and Portland cement fiberboard is 2:100.Cement fibrolite plate, meter comprises following component by weight: Portland cement 65 parts, 7 parts, flyash, wood chip 10 parts, 5 parts, water and water reducer 1.3 parts.
Described water reducer comprises: naphthalenesulfonate formaldehyde condensation compound 25 parts, phenol 7 parts, 4 parts, sodium hydroxide, sugared calcium 3 parts, Trisodium Citrate 7 parts, sodium lignosulfonate 13 parts, sulfonated melamine compound resin 13 parts, iron protocarbonate 2 parts, calcium sulphoaluminate 8 parts, polyvinyl alcohol 12 parts, thiosinamine 4 parts.
Embodiment 2
A kind of crack resistence agent for Portland cement fiberboard, count by weight, described crack resistence agent comprises: iron vitriol 1 part, elastic pure acrylic acid emulsion 3 parts, anhydrous cupric sulfate 0.1 part, 0.1 part, magnesium oxide, polypropylene fibre 2 parts, dihydrate gypsum 5 parts, 3 parts, calcium oxide, trolamine 0.1 part, hydroxyethylmethyl-cellulose 2 parts, ethyl cellulose 3 parts.
In use, the mass ratio of described crack resistence agent and Portland cement fiberboard is 1:100.Cement fibrolite plate, meter comprises following component by weight: Portland cement 65 parts, 7 parts, flyash, wood chip 10 parts, 5 parts, water and water reducer 1.3 parts.
Described water reducer comprises: naphthalenesulfonate formaldehyde condensation compound 25 parts, phenol 7 parts, 4 parts, sodium hydroxide, sugared calcium 3 parts, Trisodium Citrate 7 parts, sodium lignosulfonate 13 parts, sulfonated melamine compound resin 13 parts, iron protocarbonate 2 parts, calcium sulphoaluminate 8 parts, polyvinyl alcohol 12 parts, thiosinamine 4 parts.
Embodiment 3
A kind of crack resistence agent for Portland cement fiberboard, count by weight, described crack resistence agent comprises: iron vitriol 3 parts, elastic pure acrylic acid emulsion 1 part, anhydrous cupric sulfate 0.05 part, 1 part, magnesium oxide, polypropylene fibre 1 part, dihydrate gypsum 10 parts, 1 part, calcium oxide, trolamine 0.05 part, benzyl cellulose 1 part.
In use, the mass ratio of described crack resistence agent and Portland cement fiberboard is 3:100.Cement fibrolite plate, meter comprises following component by weight: Portland cement 65 parts, 7 parts, flyash, wood chip 10 parts, 5 parts, water and water reducer 1.3 parts.
Described water reducer comprises: naphthalenesulfonate formaldehyde condensation compound 25 parts, phenol 7 parts, 4 parts, sodium hydroxide, sugared calcium 3 parts, Trisodium Citrate 7 parts, sodium lignosulfonate 13 parts, sulfonated melamine compound resin 13 parts, iron protocarbonate 2 parts, calcium sulphoaluminate 8 parts, polyvinyl alcohol 12 parts, thiosinamine 4 parts.
Embodiment 4
A kind of crack resistence agent for Portland cement fiberboard, count by weight, described crack resistence agent comprises: iron vitriol 2 parts, elastic pure acrylic acid emulsion 3 parts, anhydrous cupric sulfate 0.07 part, 0.8 part, magnesium oxide, polypropylene fibre 1 part, dihydrate gypsum 6 parts, 1 part, calcium oxide, trolamine 0.09 part and ethyl cellulose 4 parts.
In use, the mass ratio of described crack resistence agent and Portland cement fiberboard is 2:100.Cement fibrolite plate, meter comprises following component by weight: Portland cement 70 parts, 6 parts, flyash, wood chip 11 parts, 5 parts, water and water reducer 1.4 parts.
Described water reducer comprises: naphthalenesulfonate formaldehyde condensation compound 25 parts, phenol 8 parts, 3 parts, sodium hydroxide, sugared calcium 5 parts, Trisodium Citrate 7 parts, sodium lignosulfonate 14 parts, sulfonated melamine compound resin 11 parts, iron protocarbonate 3 parts, calcium sulphoaluminate 7 parts, polyvinyl alcohol 12 parts, thiosinamine 3 parts.
Comparative example 1
For a crack resistence agent for Portland cement fiberboard, count by weight, described crack resistence agent comprises: dihydrate gypsum 8 parts, 1 part, calcium oxide, trolamine 0.08 part and ethyl cellulose 4 parts.
In use, the mass ratio of described crack resistence agent and Portland cement fiberboard is 2:100.Cement fibrolite plate, meter comprises following component by weight: Portland cement 65 parts, 7 parts, flyash, wood chip 10 parts, 5 parts, water and water reducer 1.3 parts.
Described water reducer comprises: naphthalenesulfonate formaldehyde condensation compound 25 parts, phenol 7 parts, 4 parts, sodium hydroxide, sugared calcium 3 parts, Trisodium Citrate 7 parts, sodium lignosulfonate 13 parts, sulfonated melamine compound resin 13 parts, iron protocarbonate 2 parts, calcium sulphoaluminate 8 parts, polyvinyl alcohol 12 parts, thiosinamine 4 parts.
Comparative example 2
Cement fibrolite plate prepared by this comparative example does not add crack resistence agent, described cement fibrolite plate, and meter comprises following component by weight: Portland cement 65 parts, 7 parts, flyash, wood chip 10 parts, 5 parts, water and water reducer 1.3 parts.
Described water reducer comprises: naphthalenesulfonate formaldehyde condensation compound 25 parts, phenol 7 parts, 4 parts, sodium hydroxide, sugared calcium 3 parts, Trisodium Citrate 7 parts, sodium lignosulfonate 13 parts, sulfonated melamine compound resin 13 parts, iron protocarbonate 2 parts, calcium sulphoaluminate 8 parts, polyvinyl alcohol 12 parts, thiosinamine 4 parts.
The crack resistence agent of embodiment and comparative example is used for making cement fibrolite plate, and then detects the indices of cement fibrolite plate.As shown in Table 1 and Table 2.
Table 1 is the water resistance of cement fibrolite plate and the detected result of strength property that are doped with the crack resistence agent that the present embodiment obtains
As shown in table 1, after being doped with the cement fibrolite plate crack resistence agent after the embodiment of the present invention, the intensity of cement fibrolite plate is significantly improved.The cement fibrolite plate 14 days rate of expansion of crack resistence agent provided by the invention of simultaneously adulterating can reach 0.027%, and the rate of expansion in 21 days air still has 0.007%, and the contraction of-0.002% has appearred in the cement fibrolite plate not adding crack resistence agent.Meanwhile, the cement fibrolite plate impermeability pressure being doped with crack resistence agent reaches 0.9MPa, and the cement fibrolite plate impermeability pressure not adding crack resistence agent only has 0.7MPa.Therefore, adopt crack resistence agent of the present invention to have good waterproof action, have certain densification to cement fibrolite plate simultaneously, the ultimate compression strength of cement fibrolite plate can be improved.
Table 2 is detected results of the resistance to cleavage of the cement fibrolite plate being doped with the crack resistence agent that the present embodiment obtains
Flaw area/mm 2 | Crack reduces coefficient | Limit splits performance ratings | |
Embodiment 1 | 453.2 | 77.7% | One-level |
Embodiment 2 | 448.9 | 76.5% | One-level |
Embodiment 3 | 462.5 | 76.7% | One-level |
Embodiment 4 | 455.2 | 75.8% | One-level |
Comparative example 1 | 503.2 | 70.8% | Secondary |
Comparative example 2 | 568.3 | 65.8% | Secondary |
As shown in table 2, crack resistence agent of the present invention can reduce visible crack number and the area of cement fibrolite plate effectively, has played the effect of cracking resistance preferably.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (10)
1. for a crack resistence agent for Portland cement fiberboard, it is characterized in that, described crack resistence agent at least comprises: iron vitriol, elastic pure acrylic acid emulsion, anhydrous cupric sulfate, magnesium oxide and polypropylene fibre.
2. the crack resistence agent for Portland cement fiberboard according to claim 1, it is characterized in that, count by weight, described crack resistence agent at least comprises: iron vitriol 1-3 part, elastic pure acrylic acid emulsion 1-3 part, anhydrous cupric sulfate 0.05-0.1 part, magnesium oxide 0.1-1 part and polypropylene fibre 1-2 part.
3. the crack resistence agent for Portland cement fiberboard according to claim 1, is characterized in that, described crack resistence agent comprises: dihydrate gypsum, calcium oxide, trolamine and ether of cellulose.
4. the crack resistence agent for Portland cement fiberboard according to claim 1, is characterized in that, count by weight, and described crack resistence agent comprises: dihydrate gypsum 5-10 part, calcium oxide 1-3 part, trolamine 0.05-0.1 part and ether of cellulose 1-5 part.
5. the crack resistence agent for Portland cement fiberboard according to claim 1-4, it is characterized in that, described ether of cellulose is one or more in hydroxyethylmethyl-cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, Natvosol, Vltra tears.
6. the crack resistence agent for Portland cement fiberboard according to claim 1, is characterized in that, in use, the mass ratio of described crack resistence agent and Portland cement fiberboard is 1-3:100.
7. the crack resistence agent for Portland cement fiberboard according to claim 1, it is characterized in that, described cement fibrolite plate, meter comprises following component by weight: Portland cement 60-70 part, flyash 6-7 part, wood chip 9-12 part, water 3-6 part and water reducer 1.2-1.4 part.
8. the crack resistence agent for Portland cement fiberboard according to claim 7, it is characterized in that, described water reducer at least comprises: naphthalenesulfonate formaldehyde condensation compound, phenol, sodium hydroxide, sugared calcium, Trisodium Citrate.
9. the crack resistence agent for Portland cement fiberboard according to claim 8, it is characterized in that, described water reducer comprises: sodium lignosulfonate, sulfonated melamine compound resin, iron protocarbonate, calcium sulphoaluminate, polyvinyl alcohol, thiosinamine.
10. the crack resistence agent for Portland cement fiberboard according to claim 7, it is characterized in that, count by weight, described water reducer comprises: naphthalenesulfonate formaldehyde condensation compound 20-30 part, phenol 5-10 part, sodium hydroxide 1-5 part, sugared calcium 1-5 part, Trisodium Citrate 5-10 part, sodium lignosulfonate 10-15 part, sulfonated melamine compound resin 10-15 part, iron protocarbonate 1-5 part, calcium sulphoaluminate 5-10 part, polyvinyl alcohol 10-15 part, thiosinamine 1-5 part.
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CN201511026223.6A CN105503063A (en) | 2015-12-30 | 2015-12-30 | Anti-crack agent used for Portland cement fiberboards |
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CN201511026223.6A CN105503063A (en) | 2015-12-30 | 2015-12-30 | Anti-crack agent used for Portland cement fiberboards |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109912250A (en) * | 2019-04-19 | 2019-06-21 | 湖北恒利建材科技有限公司 | It is a kind of efficiently to reduce water-proofing anticracking agent and preparation method thereof |
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CN1844023A (en) * | 2006-04-20 | 2006-10-11 | 上海交通大学 | Mortar anti-cracking agent |
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CN104310843A (en) * | 2014-09-26 | 2015-01-28 | 北京建筑大学 | Clay-resistant concrete function additive and preparation method thereof |
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CN109912250A (en) * | 2019-04-19 | 2019-06-21 | 湖北恒利建材科技有限公司 | It is a kind of efficiently to reduce water-proofing anticracking agent and preparation method thereof |
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