CN101648803B - Powder mortar composite for bubble lightweight concrete - Google Patents

Powder mortar composite for bubble lightweight concrete Download PDF

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Publication number
CN101648803B
CN101648803B CN2009100540723A CN200910054072A CN101648803B CN 101648803 B CN101648803 B CN 101648803B CN 2009100540723 A CN2009100540723 A CN 2009100540723A CN 200910054072 A CN200910054072 A CN 200910054072A CN 101648803 B CN101648803 B CN 101648803B
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grams
lightweight concrete
cellulose
ether
cement
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CN2009100540723A
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CN101648803A (en
Inventor
施晓旦
郭和森
王养臣
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CHANGSHU YISHENG COMMODITY Co.,Ltd.
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Shanghai Dongsheng New Material Co Ltd
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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
    • 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
    • C04B28/06—Aluminous cements
    • 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
    • C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
    • C04B40/0608—Dry ready-made mixtures, e.g. mortars at which only water or a water solution has to be added before use
    • 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
    • C04B2103/0045—Polymers chosen for their physico-chemical characteristics
    • C04B2103/0066—Film forming polymers
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • 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
    • C04B2111/40—Porous or lightweight materials
    • 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
    • C04B2111/50—Flexible or elastic materials

Abstract

The invention provides a powder mortar composite for bubble lightweight concrete and the composite comprises the following components in parts by weight: 60-90 parts of ordinary silicate cement, 20-40 parts of sulphoaluminate cement, 1.5-3.0 parts of polyacrylate re-dispersible emulsion powder, 0.05-0.15 part of cellulose ether and 0.1-0.3 part of tartaric acid. The invention can ensure that the lightweight concrete has uniform density, stable volume weight and good hydrophobic property; in addition, the film of polymer has good flexibility in the lightweight concrete so as to be more applicable to the roadbed filling of tunnels and express highways, thus shortening the construction period and improving the construction efficiency.

Description

Powder mortar composite for bubble lightweight concrete
Technical field
The present invention relates to a kind of dry powder mortar composition for air bubble lightweight concrete.
Background technology
Along with the high speed development of national economy, motorway of China and subterranean tunnel and high speed railway construction are also flourish, and be at the forefront in the world at present.In the great development of motorway, subterranean tunnel and high speed railway construction; Also existing some has technical barrier to be solved, as the maintenance of the stability of slope problem of the problem of bumping at bridge-head in weak ground location, highfill embankment and Tunnel Engineering with banket or the like.
Recent years, bubble lightweight concrete is at home and abroad more and more paid attention to, and has been widely used in as a type material extraordinary prospect being arranged in highway and the tunnel construction in the world.But many problems of bubble lightweight concrete, like bonding strength, snappiness, hydrophobic nature and unconfined compression strength etc. is still waiting further raising.Because be a type material; The advantage of the many additives of concrete is not used effectively in light weight concrete; The bubble stability of adding light weight concrete also is a very important problem; Therefore, solving light weight concrete and how to use concrete additive, is a very important problem to improve bubble lightweight concrete each item intensity.
Summary of the invention
The object of the present invention is to provide a kind of powder mortar composite for bubble lightweight concrete, to overcome the above-mentioned defective that prior art exists.
Powder mortar composite for bubble lightweight concrete of the present invention comprises the component of following weight part:
60～90 parts of ordinary Portland cements
20～40 parts of aluminosulfate cements
1.5～3.0 parts of polyacrylic ester redispersable latex powders
0.05～0.15 part of ether of cellulose
0.1～0.3 part in tartrate
Said ordinary Portland cement, aluminosulfate cement can adopt the commercially available prod, resemble board (42.5) ordinary Portland cement like what Shanghai Cement Plant produced; Six or nine boards (42.5) quick hardening sulphoaluminate cement of Tangshan six or nine cement ltds.
Described polyacrylic ester redispersable latex powder is meant the redispersable latex powder that vinylformic acid, esters of acrylic acid, other verivate copolymerization of vinylformic acid or homopolymerization are produced; Can adopt the commercially available prod, east, Shanghai rises the VAP-360 polyacrylic ester redispersable latex powder that novel material has company.
Said ether of cellulose is selected from more than one of carboxylic hydroxypropyl methyl cellulose ether, hydroxypropyl methyl cellulose ether, cellulose ether or hydroxyethyl ether cellulose;
Said ether of cellulose can adopt commercially available product, and containing the chemical industry ltd trade mark like the sky, Henan is the product of MC-100000S;
Preferably, the weight-average molecular weight of described ether of cellulose is 2～40,000, and preferable weight-average molecular weight is 20,000 hydroxyethyl ether cellulose, and for example the Rong Ou chemical industry Shanghai ltd trade mark is the MK-20000S ether of cellulose;
Powder mortar composite for bubble lightweight concrete of the present invention adopts this area ordinary method preparation, and for example (but being not limited to) adopted the method that is prepared as follows:
In the time of 70 ℃; Ordinary Portland cement is joined in the agitator kettle, add aluminosulfate cement, polyacrylic ester redispersable latex powder, ether of cellulose, tartrate while stirring successively, stirred 30 minutes; Process dry powder; Pack packing then adds water again during use, the adding weight of water is 50～60% of said powder mortar composite for bubble lightweight concrete.
Powder mortar composite for bubble lightweight concrete of the present invention; Adopted the polyacrylic ester redispersable latex powder as polymeric additive, because the polyacrylic ester redispersable latex powder forms stable film among being blended in cement equably, this film has hydrophobic nature again; Remove light weight concrete from and add other hydrophober again; Eliminated that contained emulsifying agent (tensio-active agent) makes light weight concrete density even to the influence of bubble stability in other hydrophober, unit weight is stable; Hydrophobicity performance is good; The film of polymkeric substance has good snappiness in light weight concrete simultaneously, has increased the folding strength and the bonding strength (with cement based) of light weight concrete, is applicable to that more the roadbed of tunnel, motorway bankets.The rational Application of aluminosulfate cement; Improve the early strength of light weight concrete greatly, because the crosslinked action of polymeric film, make the stable long-term strength of light weight concrete; Stable mechanical property; Be highly suitable for banketing of some Important Project and the urgent engineering of time requirement, shorten the engineering time, improved advantages such as operating efficiency.
Embodiment
Embodiment 1
Ordinary Portland cement (going up walrus board (42.5)) 6000 grams, aluminosulfate cement (Tangshan six or nine boards (42.5) quick hardening sulphoaluminate cement) 4000 grams, polyacrylic ester redispersable latex powder (east, Shanghai rises VAP-360) 150 grams, hydroxyethyl ether cellulose (20,000 molecular weight, the Rong Ou chemical industry Shanghai ltd trade mark is the MK-20000S ether of cellulose) 5 grams, tartrate 30 grams;
Preparing method: in the time of 70 ℃; Ordinary Portland cement is joined in the agitator kettle, add aluminosulfate cement, polyacrylic ester redispersable latex powder, hydroxyethyl ether cellulose, tartrate while stirring successively, stirred 30 minutes; Process dry powder; Pack packing then adds water again during use, the adding weight of water is 5600 grams.
Embodiment 2
Ordinary Portland cement (going up walrus board (42.5)) 7000 grams, aluminosulfate cement (Tangshan six or nine boards (42.5) quick hardening sulphoaluminate cement) 3000 grams, polyacrylic ester redispersable latex powder (east, Shanghai rises VAP-360) 200 grams, hydroxyethyl ether cellulose (the 20000 molecular weight Rong Ou chemical industry Shanghai ltd trades mark are the MK-20000S ether of cellulose) 7.5 grams, tartrate 20 grams, water 5600 grams.
The preparation method is with embodiment 1.
Embodiment 3
Ordinary Portland cement (going up walrus board (42.5)) 8000 grams, aluminosulfate cement (Tangshan six or nine boards (42.5) quick hardening sulphoaluminate cement) 2000 grams, polyacrylic ester redispersable latex powder (east, Shanghai rises VAP-360) 300 grams, hydroxyethyl ether cellulose (the 20000 molecular weight Rong Ou chemical industry Shanghai ltd trades mark are the MK-20000S ether of cellulose) 10 grams, tartrate 10 grams, water 5600 grams.The preparation method is with embodiment 1.
Embodiment 4
Ordinary Portland cement (going up walrus board (42.5)) 6500 grams, aluminosulfate cement (Tangshan six or nine boards (42.5) quick hardening sulphoaluminate cement) 3500 grams, polyacrylic ester redispersable latex powder (east, Shanghai rises VAP-360) 175 grams, hydroxyethyl ether cellulose (20,000 molecular weight) 15 grams, tartrate 25 grams, water 5600 grams.
Embodiment 5
Ordinary Portland cement (going up walrus board (42.5)) 7500 grams, aluminosulfate cement (Tangshan six or nine boards (42.5) quick hardening sulphoaluminate cement) 2500 grams, polyacrylic ester redispersable latex powder (east, Shanghai rises VAP-360) 225 grams, hydroxyethyl ether cellulose (the 20000 molecular weight Rong Ou chemical industry Shanghai ltd trades mark are the MK-20000S ether of cellulose) 12.5 grams, tartrate 12 grams, water 5600 grams.The preparation method is with embodiment 1.
Embodiment 6
Ordinary Portland cement (going up walrus board (42.5)) 7200 grams, aluminosulfate cement (Tangshan six or nine boards (42.5) quick hardening sulphoaluminate cement) 2800 grams, polyacrylic ester redispersable latex powder (east, Shanghai rises VAP-360) 250 grams, hydroxyethyl ether cellulose (the 20000 molecular weight Rong Ou chemical industry Shanghai ltd trades mark are the MK-20000S ether of cellulose) 6 grams, tartrate 15 grams, water 5600 grams.The preparation method is with embodiment 1.
Embodiment 7
Ordinary Portland cement (going up walrus board (42.5)) 6200 grams, aluminosulfate cement (Tangshan six or nine boards (42.5) quick hardening sulphoaluminate cement) 3300 grams, polyacrylic ester redispersable latex powder (east, Shanghai rises VAP-360) 275 grams, hydroxyethyl ether cellulose (the 20000 molecular weight Rong Ou chemical industry Shanghai ltd trades mark are the MK-20000S ether of cellulose) 14 grams, tartrate 22 grams, water 5600 grams.The preparation method is with embodiment 1.
Embodiment 8
Ordinary Portland cement (going up walrus board (42.5)) 6700 grams, aluminosulfate cement (Tangshan six or nine boards (42.5) quick hardening sulphoaluminate cement) 3800 grams, polyacrylic ester redispersable latex powder (east, Shanghai rises VAP-360) 300 grams, hydroxyethyl ether cellulose (the 20000 molecular weight Rong Ou chemical industry Shanghai ltd trades mark are the MK-20000S ether of cellulose) 9 grams, tartrate 28 grams, water 5600 grams.The preparation method is with embodiment 1.
Embodiment 9
Ordinary Portland cement (going up walrus board (42.5)) 7800 grams, aluminosulfate cement (Tangshan six or nine boards (42.5) quick hardening sulphoaluminate cement) 2200 grams, polyacrylic ester redispersable latex powder (east, Shanghai rises VAP-360) 165 grams, hydroxyethyl ether cellulose (the 20000 molecular weight Rong Ou chemical industry Shanghai ltd trades mark are the MK-20000S ether of cellulose) 7 grams, tartrate 18 grams, water 5600 grams.The preparation method is with embodiment 1.
Embodiment 10
Blank:
Ordinary Portland cement (going up walrus board (42.5)) 10000 grams, water 5600 grams.Comparison sample:
Hat immature soil wood Technew SA product:
One, the mortar with embodiment 1～9 adds 89 liters in bubble (density 50 grams per liters) again, mixes the back and processes all kinds of moulds according to the method in " bubble mixing light banket new technology " (People's Press's publication) book;
Said bubble refers to finger: after water adds certain amount of foaming agent; Pass through frothing machine again; It is all generated bubble; The ratio of whipping agent and water is 1: 20, and the density of bubble is 50 grams per liters, and the adding mode can adopt the method in " bubble mixing light banket new technology " (People's Press's publication) book;
Two, cement foamable compsn and foaming machine use rich energy-saving building technology centre of development product (the composite cement foamable compsn of JT) the JT-500 frothing machine of Nanjing gold.
Three, testing method:, measure the result and see the following form according to the method in " bubble mixing light banket new technology " (People's Press's publication) book:
Figure G2009100540723D00071
Can find out from above-mentioned application test; Extraordinary dry powder mortar composition for air bubble lightweight concrete of the present invention is compared with comparison sample; The light weight concrete that adopts dry powder mortar composition for air bubble lightweight concrete to process, molding unit weight is close with design unit weight, and the unit weight loss is little; Die trial is after immersion in 28 days, and water-intake rate is the highest also to have only 11%; 7 days ultimate compression strength has reached more than 80% of 28 days ultimate compression strength, and the ultimate compression strength of the light weight concrete in later stage is stable; Bubble lightweight concrete mortar folding strength, with the bonding strength of cement based apparently higher than comparative sample and blank sample, be highly suitable for opening up base and banketing of tunnel, motorway and Important Project.

Claims (3)

1. powder mortar composite for bubble lightweight concrete is characterized in that, comprises the component of following weight part:
Figure FSB00000637535000011
Described polyacrylic ester redispersable latex powder is selected from the redispersable latex powder that vinylformic acid, esters of acrylic acid, other verivate copolymerization of vinylformic acid or homopolymerization are produced.
2. powder mortar composite for bubble lightweight concrete according to claim 1; It is characterized in that said ether of cellulose is selected from more than one in carboxylic hydroxypropyl methyl cellulose ether, hydroxypropyl methyl cellulose ether, cellulose ether or the hydroxyethyl ether cellulose.
3. powder mortar composite for bubble lightweight concrete according to claim 1 is characterized in that, the weight-average molecular weight of said ether of cellulose is 2～40,000.
CN2009100540723A 2009-06-29 2009-06-29 Powder mortar composite for bubble lightweight concrete Active CN101648803B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN101648803B true CN101648803B (en) 2012-05-23

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102010223B (en) * 2010-06-29 2013-03-06 上海东升新材料有限公司 Early-strength soft foamed light concrete and filling soil combination
CN102383352B (en) * 2011-08-29 2013-08-07 中交四公局第二工程有限公司 Method for constructing foam lightweight concrete poured roadbed
CN102898065A (en) * 2012-10-24 2013-01-30 北京工业大学 Cracking and hollowing resistant aerated concrete water repellent and use method thereof
CN103467046A (en) * 2013-08-28 2013-12-25 句容联众科技开发有限公司 Polymer cement mortar and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101428992A (en) * 2008-12-03 2009-05-13 上海华力化工产品有限公司 Dry powder mortar packaged in grouping manner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101428992A (en) * 2008-12-03 2009-05-13 上海华力化工产品有限公司 Dry powder mortar packaged in grouping manner

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