CN101786847A - Repair mortar and construction method thereof - Google Patents

Repair mortar and construction method thereof Download PDF

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Publication number
CN101786847A
CN101786847A CN201010042858A CN201010042858A CN101786847A CN 101786847 A CN101786847 A CN 101786847A CN 201010042858 A CN201010042858 A CN 201010042858A CN 201010042858 A CN201010042858 A CN 201010042858A CN 101786847 A CN101786847 A CN 101786847A
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CN
China
Prior art keywords
weight
aggregate
mending mortar
parts
type composite
Prior art date
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Granted
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CN201010042858A
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Chinese (zh)
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CN101786847B (en
Inventor
李少强
张绮珊
郭晓燕
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Shenzhen Guangtian group Limited by Share Ltd
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SHENZHEN GUANGTIAN DECORATION GROUP CO Ltd
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Priority to CN2010100428586A priority Critical patent/CN101786847B/en
Publication of CN101786847A publication Critical patent/CN101786847A/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482Coating or impregnation materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72Repairing or restoring existing buildings or building materials
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

A light energy-saving repair mortar is prepared by mixing the following components according to the parts by weight: 25-30 parts of ordinary Portland cement higher than or equal to R325, 5-8 parts of construction gypsum, 3-5 parts of slaked lime with the fineness more than 300 meshes, 10-15 parts of light aggregate, 50-55 parts of heavy aggregate and 1 part of F compound additive, wherein the light aggregate is inorganic vitrified hollow microporous material with the fineness lower than 100 meshes; the heavy aggregate is river sand; and the F compound additive is prepared by mixing 0.25 part of lignocellulose, 0.25 part of polypropylene fiber and 0.4 part of redispersible latex powder according to parts by weight. 30-50 % of the repair mortar by weight is diluted with water and uniformly mixed through mechanical or manual stirring to meet the viscosity suitable for mechanical spraying or manual construction, and the mechanical spraying or manual construction can be carried out. The light repair mortar is applicable to be matched with various mortars for use so as to repair cracking and dropping and can fill the repair thickness at once, the process is simple, the manufacturing cost is low, and the repair mortar is applicable to indoor and outdoor repair works of houses, bridges and large public buildings.

Description

A kind of mending mortar and constructional method thereof
Technical field
The present invention relates to a kind of mortar for building, especially relate to a kind of composition and constructional method thereof of mending mortar.
Background technology
(air-entrained concrete building block for example, its deadweight is approximately 600-800Kg/m developing and apply novel wall material energetically 3) time, common motar (its component and weight proportion are generally ordinary Portland cement 18-25, white lime 0-5, limestone sand 60-75, additive 0.24-0.40) from weight average between 1700-1800Kg/m 3Between.Because lightweight not, the Young's modulus of these mortars be all obviously greater than the Young's modulus of air-entrained concrete building block, do not match with the Young's modulus of air-entrained concrete building block, cause the interface of plastering to produce bigger deformation stress and produce hollowing, cracking then; Or, the outward appearance of metope and large public building is impacted, even owner or pedestrian are brought potential safety hazard because of house, bridge and large public building motion cause screed cracking to occur, come off.Secondly, because existing mortar is difficult to reach the effect of disposable filling and repairing thickness from great, need secondary operation, when increasing the cost cost, operation is loaded down with trivial details, and operating efficiency is low.
Summary of the invention
The invention provides and a kind ofly be applied to house, bridge and large public building, be suitable for, come off with the supporting use of various mortars, with repair cracking, and lightweight mending mortar that can disposable filling and repairing thickness, simultaneously, the present invention also provides its constructional method.
For solving the problems of the technologies described above, the invention provides a kind of mending mortar, it is characterized in that, mix by the component of following weight proportion:
Ordinary Portland cement 25-30
Plaster of Paris 5-8
White lime 3-5
Light-weight aggregate 10-15
Heavy aggregate 50-55
F type composite assistant 1;
Wherein, described ordinary Portland cement is for being greater than or equal to the R325 model; The fineness of described white lime is more than 300 orders; Described light-weight aggregate is that fineness is lower than the inorganic vitreous hollow microporous material of 100 purposes; Described heavy aggregate is a river sand; Described F type composite assistant comprises that lignocellulose 0.25 weight part, polypropylene fibre 0.25 weight part, redispersable latex powder 0.4 weight part mix.
The component that is mixed into described F type composite assistant also comprises the water-holding agent of 0.1 weight part.
Described polypropylene fibre is the fiber of moderate-length.
Described F type composite assistant is the F type composite assistant of the synthetic trading company in Guangzhou.
The fineness of described inorganic vitreous hollow microporous material is the 60-100 order.
Described river sand is that fineness is the common river of a 25-50 purpose sand.
Described mending mortar, preferably the component by following weight proportion mixes:
Ordinary Portland cement 28
Plaster of Paris 6
White lime 3
Light-weight aggregate 12
Heavy aggregate 50
F type composite assistant 1.
The present invention also provides the constructional method of described mending mortar: with the 30-50% thin up of described mending mortar by its weight, mechanical or manual stirring is until mixing, reach the viscosity that is fit to mechanically spraying or manual construction, can mechanically spraying or manual construction.
The present invention is the thinking according to lighting, adopt special light-weight aggregate to reduce the proportion of mending mortar, make it lightweight, effectively prevent to ftracture from great when repairing, the generation because of mortar, can disposablely reach the effect of filling and repairing thickness, simplified the operation of secondary repairing work in the prior art, simultaneously, the present invention also improves cohesive strength and anti-contracility.The present invention also adopts special composite assistant to satisfy the mending mortar needs, has reached extraordinary construction effect.
Inorganic vitreous hollow microporous material is the main contributor of lighting, and the whole proportion of mending mortar of the present invention reduces greatly, does apparent density (Kg/cm 3) be reduced to 700-1000 from the 1700-1800 of prior art mortar.This has fundamentally solved the complicated procedures of forming of existing mending mortar because of plastering from the great sagging secondary that causes and repairing.
The main particle diameter of the ordinary Portland cement that the present invention is used is less than 0.08mm (national Specification 0.08mm above must not surpass 10%), and the white lime fineness is 300 orders above (being that particle diameter is 0-0.048mm), and they belong to fine particle; The used light-weight aggregate of the present invention is inorganic vitreous hollow microporous material, and fineness is 60-100 order (particle diameter is about 0.15-0.25mm), and it belongs to middle particle; The fineness of the sand that the present invention is used is 25-50 order (particle diameter 0.30-0.60mm), belongs to coarse particles.Like this, size distribution is all arranged in the particle size range of 0-0.6mm, grain composition is good, it is comparatively closely knit that this just makes storeroom fill, mortar resistance to compression after the sclerosis, tensile strength just strengthen thereupon, can reduce the stretching, the racking stress deformation that produce at the interface of plastering, effectively reduce interfacial failure and the cracking that produces.
Good grain composition and lighting also make mortar of the present invention can be used in mechanized construction, because grading curve becomes positive correlation with its pumping, grating is good more, and pumping is good more, has also solved because of the existing great stifled pump that produces of mortar ratio, plugging, stifled rifle problem.
The gypsum porosity is big; can make the mortar microdilatancy; anti-shrinkage strain performance strengthens; make the mortar smooth surface full; effectively reduce the mortar cracking when dry, moreover the micropore of inorganic vitreous hollow microporous material can stop the development of microfracture in the mortar block of sclerosis back; reduce the fissured stress concentration factor of mortar internal voids, play the effect that improves matrix tensile strength, shear strength.
Contain redispersable latex powder in the F type composite assistant, can make mending mortar of the present invention at different positions---comprise mending mortar-motar interface region, mending mortar-interface region and mending mortar inside gather materials---all produce latex film, latex film has since stretch mechanism, can apply pulling force to itself and mending mortar riveted joint part, by these internal action power, mortar is kept as a whole, the cohesive strength that is mending mortar has improved, add the latex film that is interweaved and microfracture is merged into through crack inhibition is also arranged, effectively reduce hollowing, cracking.Add in the F type composite assistant and contain lignocellulose, has powerful crosslinked darning function, mix with components such as cement, light-weight aggregate, heavy aggregates between the fiber of back and constitute 3-D solid structure, like this, make the effective combination of all components, improve anti-cracking performance, and man-made fiber (polypropylene fibre) composition in the F type composite assistant more helps becoming fibre, give fiber high elongation, increase mortar elasticity.Lignocellulose in the F type composite assistant, polypropylene fibre and redispersable latex powder three acting in conjunction have promoted the rupture stress of mending mortar, when applying reactive force, because elastic improvement forms with regard to the deferrable microfracture, effectively reduce cracking.Like this, the lightweight mending mortar can effectively reduce the cracking of mortar, the quality of assurance construction work.
Add inorganic vitreous hollow microporous material and make the mortar lightweight; also make having relatively moved easily between variable grain; redispersable latex powder in the F type composite assistant also can make mobile the enhancing in addition, and both actings in conjunction make that intergranular sliding-frictional resistance becomes littler in the mending mortar, the flexible enhancing; it is more sliding that quality also becomes; it is more smooth and easy that the mortar plaster is got up, and workability improves, and has added lightweight; mending mortar can disposable filling and repairing thickness, need not secondary operation.
Adopt inorganic vitreous hollow microporous material and gypsum to increase porosity, reduced the material usage of unit surface,, thereby reach cost cost effectively energy-conservation and the reduction unit surface because of lighting vertical-lift weight also reduces greatly thereupon.
At present, in mortar for building field, commerical ready-mixed concrete is in the process of high speed steady progression, and commodity mortar also is the developing new trend of urban architecture adnornment industry, common dry-mix has belonged to the novel product category, and the lighting field of mortar also relates to regard to rarer people.In a word, after adopting lightweight mending mortar of the present invention, its volume density reduces, and cohesiveness is good, lightweight, aspect resistance to cleavage, has suitable advantage, do not have and shrink, disposable plastering do not ftractureed, the disposable filling and repairing thickness that reaches fast of energy, features simple and practical process, unit square rice cheap is applicable to house, bridge and large public building repairing work.
Embodiment
Each component of lightweight mending mortar of the present invention is all selected existing commercially available prod for use, and each composition weight of embodiment 1-5 sees Table shown in one, and each composition weight is in kilogram:
Table one
Sequence number Material name Producer's model Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
??1 Ordinary Portland cement General ??25 ??28 ??30 ??25 ??26
??2 Plaster of Paris General ??5 ??6 ??5 ??5 ??8
??3 White lime General ??4 ??3 ??3 ??4 ??5
??4 Light-weight aggregate China's Henan mining industry ??15 ??12 ??10 ??10 ??10
??5 Heavy aggregate General ??50 ??50 ??51 ??55 ??50
??6 F type composite assistant Guangzhou is synthetic ??1.0 ??1.0 ??1.0 ??1.0 ??1.0
Wherein, ordinary Portland cement, plaster of Paris, white lime, heavy aggregate (common river sand) adopt the general producer's model in this area all can, wherein, described ordinary Portland cement is the black cement that is greater than or equal to the R325 model; The fineness of described white lime is more than 300 orders; The then preferred fineness of light-weight aggregate is the inorganic vitreous hollow microporous material of 60-100 purpose; As the common river sand of heavy aggregate, the preferred 25-50 order of fineness.
Wherein, F type composite assistant is provided by the synthetic trading company in Guangzhou, can be mixed by lignocellulose 0.25 weight part, polypropylene fibre 0.25 weight part, redispersable latex powder 0.4 weight part.As optimal way, also contain the water-holding agent of 0.1 weight part in this auxiliary agent, polypropylene fibre then is the fiber of moderate-length, each embodiment all adopts the F type composite assistant of this preferred ingredient.These components of F type composite assistant are existing commercially available prod, this area.
Below in conjunction with specific embodiment the present invention is done detailed description further.
Embodiment 1
Get each component according to weight shown in the embodiment in the table one 1, production technique is as follows:
Ordinary Portland cement, plaster of Paris, white lime, light-weight aggregate, heavy aggregate, F type composite assistant is by above-mentioned than reblending, even with mechanical stirring, promptly obtain the lightweight mending mortar of present embodiment 1, with paper bag packing or in bulkly all can.
Constructional method: get 100 kilograms of the lightweight mending mortars of the above-mentioned embodiment that obtains 1, add 30 kilograms of dilutions of water, mechanical or manual stirring reaches the viscosity that is fit to mechanically spraying or manual construction and can carry out automatic arc spraying or handwork until mixing.
Do the method for inspection of surface density, standard GB/T20473-2006 test thermal conductivity and industry standard SJG11-2004 detection 28d cohesive strength by standard GB/T 20473-2006 test and test, the result is shown in 1 corresponding data of embodiment in the table two.
Embodiment 2
Obtain the lightweight mending mortar of embodiment 2 with each composition weight shown in the embodiment in the table one 2, repetition embodiment 1 described production technique (only each composition weight changes); Repeat the constructional method among the embodiment 1, get 100 kilograms of lightweight mending mortars and add 40 kilograms of dilutions of water, mechanical or manual stirring reaches the viscosity that is fit to mechanically spraying or manual construction until mixing, and carries out automatic arc spraying or handwork then.Do Performance Detection with embodiment 1 described each standard, the result is shown in 2 corresponding datas of embodiment in the table two.
Embodiment 3
Obtain the lightweight mending mortar of embodiment 3 with each composition weight shown in the embodiment in the table one 3, repetition embodiment 1 described production technique (only each composition weight changes); Repeat the constructional method among the embodiment 1, get 100 kilograms of lightweight mending mortars and add 50 kilograms of dilutions of water, mechanical or manual stirring is carried out automatic arc spraying or handwork then until mixing.Do Performance Detection with embodiment 1 described each standard, the result is shown in 3 corresponding datas of embodiment in the table two.
Embodiment 4
Obtain the lightweight mending mortar of embodiment 4 with specified embodiment 4 each composition weight, repetition embodiment 1 described production technique (only each composition weight changes) in the table one; Repeat the constructional method among the embodiment 1, get 100 kilograms of lightweight mending mortars and add 50 kilograms of dilutions of water, mechanical or manual stirring is carried out automatic arc spraying or handwork then until mixing.Do Performance Detection with embodiment 1 described each standard, the result is shown in 4 corresponding datas of embodiment in the table two.
Embodiment 5
Obtain the lightweight mending mortar of embodiment 5 with specified embodiment 5 each composition weight, repetition embodiment 1 described production technique (only each composition weight changes) in the table one; Repeat the constructional method among the embodiment 1, get 100 kilograms of lightweight mending mortars and add 40 kilograms of dilutions of water, mechanical or manual stirring is carried out automatic arc spraying or handwork then until mixing.Do Performance Detection with embodiment 1 described each standard, the result is shown in 5 corresponding datas of embodiment in the table two.
Table two
Sequence number Project Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
??1 Do surface density (kg/m3) ??796 ??826 ??952 ??735 ??742
??2 Thermal conductivity (W/ (mK)) ??0.18 ??0.25 ??0.30 ??0.12 ??0.14
??3 28d cohesive strength (MPa) ??0.44 ??0.48 ??0.56 ??0.39 ??0.41

Claims (8)

1. a mending mortar is characterized in that, is mixed by the component of following weight proportion:
Ordinary Portland cement 25-30
Plaster of Paris 5-8
White lime 3-5
Light-weight aggregate 10-15
Heavy aggregate 50-55
F type composite assistant 1;
Wherein, described ordinary Portland cement is for being greater than or equal to the R325 model; The fineness of described white lime is more than 300 orders; Described light-weight aggregate is that fineness is lower than the inorganic vitreous hollow microporous material of 100 purposes; Described heavy aggregate is a river sand;
Described F type composite assistant comprises that lignocellulose 0.25 weight part, polypropylene fibre 0.25 weight part, redispersable latex powder 0.4 weight part mix.
2. mending mortar according to claim 1 is characterized in that, the component that is mixed into described F type composite assistant also comprises the water-holding agent of 0.1 weight part.
3. mending mortar according to claim 1 is characterized in that, described polypropylene fibre is the fiber of moderate-length.
4. mending mortar according to claim 1 is characterized in that, described F type composite assistant is the F type composite assistant of the synthetic trading company in Guangzhou.
5. mending mortar according to claim 1 is characterized in that, the fineness of described inorganic vitreous hollow microporous material is the 60-100 order.
6. mending mortar according to claim 1 is characterized in that, described river sand is that fineness is the common river of a 25-50 purpose sand.
7. according to each described mending mortar of claim 1-6, it is characterized in that, mix by the component of following weight proportion:
Ordinary Portland cement 28
Plaster of Paris 6
White lime 3
Light-weight aggregate 12
Heavy aggregate 50
F type composite assistant 1.
8. the constructional method of each described mending mortar of claim 1-7: with the 30-50% thin up of described mending mortar by its weight, mechanical or manual stirring is until mixing, reach the viscosity that is fit to mechanically spraying or manual construction, can mechanically spraying or manual construction.
CN2010100428586A 2010-01-19 2010-01-19 Repair mortar and construction method thereof Active CN101786847B (en)

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Application Number Priority Date Filing Date Title
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CN101786847B CN101786847B (en) 2012-06-13

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102535733A (en) * 2012-01-16 2012-07-04 上海富春建业科技股份有限公司 Method for repairing autoclaved aerated concrete defected sheet material
CN103253901A (en) * 2013-06-06 2013-08-21 上海昱喜新材料科技有限公司 Concrete bridge-deck rapid paving mortar and preparation method thereof
CN103664055A (en) * 2012-09-15 2014-03-26 南京沪联新型建材有限公司 Polymer mortar and mixing method thereof
CN105016693A (en) * 2015-07-08 2015-11-04 济南大学 Caulking anti-crack mortar
CN106116341A (en) * 2016-06-21 2016-11-16 浙江共创建材科技有限公司 A kind of expediting setting type cement flooring mending mortar and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100450962C (en) * 2007-02-05 2009-01-14 孙晋东 Dry powder mortar for plastering gypsum wall
CN101412608B (en) * 2008-11-03 2012-05-23 深圳广田装饰集团股份有限公司 Composite foam mortar, and preparation and construction method thereof
CN101492268B (en) * 2009-03-11 2012-05-09 朱炳喜 Concrete mending mortar additive and formulating method for mending mortar
CN101580369B (en) * 2009-06-19 2013-06-12 清华大学 Fiber reinforced high-strength mortar used for concrete structure repair

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102535733A (en) * 2012-01-16 2012-07-04 上海富春建业科技股份有限公司 Method for repairing autoclaved aerated concrete defected sheet material
CN102535733B (en) * 2012-01-16 2014-07-02 上海富春建业科技股份有限公司 Method for repairing autoclaved aerated concrete defected sheet material
CN103664055A (en) * 2012-09-15 2014-03-26 南京沪联新型建材有限公司 Polymer mortar and mixing method thereof
CN103253901A (en) * 2013-06-06 2013-08-21 上海昱喜新材料科技有限公司 Concrete bridge-deck rapid paving mortar and preparation method thereof
CN103253901B (en) * 2013-06-06 2016-01-13 上海昱喜新材料科技有限公司 A kind of concrete bridge deck fast spreading mortar and preparation method thereof
CN105016693A (en) * 2015-07-08 2015-11-04 济南大学 Caulking anti-crack mortar
CN106116341A (en) * 2016-06-21 2016-11-16 浙江共创建材科技有限公司 A kind of expediting setting type cement flooring mending mortar and preparation method thereof

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Address after: 518003 Guangdong, Shenzhen, Luohu District, Yanhe Road 1003, Beijing capital east 1~2 level.

Patentee after: Shenzhen Guangtian group Limited by Share Ltd

Address before: 518003 Guangdong, Shenzhen, Luohu District, Yanhe Road 1003, Beijing capital east 1~2 level.

Patentee before: Shenzhen Guangtian Decoration Group Co., Ltd.

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