CN101186463A - Composite water-retaining thickening material for commodity mortar and using method thereof - Google Patents

Composite water-retaining thickening material for commodity mortar and using method thereof Download PDF

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Publication number
CN101186463A
CN101186463A CNA2007101725287A CN200710172528A CN101186463A CN 101186463 A CN101186463 A CN 101186463A CN A2007101725287 A CNA2007101725287 A CN A2007101725287A CN 200710172528 A CN200710172528 A CN 200710172528A CN 101186463 A CN101186463 A CN 101186463A
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China
Prior art keywords
mortar
commodity
bentonite
composite water
mixed
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Granted
Application number
CNA2007101725287A
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Chinese (zh)
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CN100558669C (en
Inventor
孙振平
蒋正武
于龙
庞敏
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Shanghai Caoyang Building-Adhesive Plant
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Tongji University
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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
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039Premixtures of ingredients
    • 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
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/44Thickening, gelling or viscosity increasing agents
    • 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
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/46Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
    • 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

The invention belongs to the technical field of building materials, in particular to a compound water-preservation and viscosity promoting material used in commercial mortar and a preparation method thereof. Ca-bentonite, na-bentonite, kaolin, sepiolite, zeolite, cellulose ether (viscosity 10000mPa.s-200000mPa.s), fly ash and lignosulfonate are mixed and then ground till sieve residue is less than 40 percent with 0.08mm square opening sieve. The invention can greatly improve the cohesiveness and consistency of mortar, reduce the stratification of mortar and improve the water retaining rate of the mortar and perfect the uniformity, stability and constructability of mortar mixture, thus promoting construction efficiency and reducing environmental pollution. Being added with the material of the invention, the strength and durability of the mortar can be improved and the hazard of shrinkage and crack can be obviously reduced. The invention is specially used in the preparation of (dry-mixed, ready-mixed) mortar for masonry, plastering and ground commodities and also applied to the preparation of thermal insulation mortar and decorative plaster, etc.

Description

A kind of composite water-retaining thickening material and using method thereof that is used for commodity mortar
Technical field
The invention belongs to building material technical field, be specifically related to a kind of composite water-retaining thickening material and using method thereof that is used for commodity mortar.
Background technology
For accelerating the energy-saving and emission-reduction of Building Trade in China, promote the construction of harmonious society, since 2000, China Shanghai just began the research and the trial production of commodity mortar and uses.In this process, find that commodity mortar compares with traditional mortar, at construction workability, intensity, weather resistance, construction speed, labour intensity, economize on resources and aspects such as the energy, environmental protection have very big advantage.Subsequently, cities such as China Beijing, Guangzhou, Shenzhen are promoted in succession and are produced and the commodity in use mortar.On June 6th, 2007, six ministries and commissions such as China Department of Commerce, the Ministry of Public Security, the Ministry of Construction, State Administration of Quality Supervision, Inspection and Quarantine and Environmental Protection Administration unite and have issued " about forbid the on-the-spot notice that stirs mortar working at part city time limit " (merchant sends elsewhere [2007] No. 205).According to notice: for carrying out in " State Council is about carrying out the notice of the recent major tasks of building a conservation-minded society " (No. [2005] 21, promulgated by the State Council) requirement about " starting with from using link; further strengthen the bulk cement promotion efficiency ", according to " bulk cement management method ", taking to forbid in the on-the-spot measure of stirring mortar of municipal construction, is an important technical that guarantees construction engineering quality, raising building operation modernization level, realization comprehensive utilization of resources, promotes civilized construction.Notice request, 10 cities such as Beijing, Tianjin, Shanghai, Zhengzhou, Guangzhou, Shenzhen, Nanjing, Changzhou, Dalian and Huludao City ban use of the mortar of working-yard preparation from September 1st, 2007, the mortar that 33 cities such as Chongqing, Hangzhou, Shijiazhuang, Wuhan, Changsha ban use of the working-yard to prepare from July 1st, 2008, and 84 mortars that the city bans use of the working-yard to prepare from July 1st, 2009 such as Changchun, Taiyuan, Urumchi.
By the supply form, commodity mortar has the branch of dry blend premixing; According to purposes, commodity mortar have plaster, build by laying bricks or stones, the branch on ground; According to strength grade, commodity mortar comprises M5 again, M7.5, and M10, M15, M15, M20, M25, M30 etc. are multiple.The compounding process of commodity mortar requires very complicated and strict thus.
The maximum technological difficulties of preparation commodity mortar are how to improve the workability of mortar under the prerequisite that does not influence mechanical strength, increase denseness, reduce delamination degree and improve water-retentivity, and the admixture component of being added can be even with other dry powder material mixing, moreover these materials must not separate in the mortar transportation.
Summary of the invention
The objective of the invention is to propose a kind of composite water-retaining thickening material that is used for commodity mortar and using method thereof that can increase substantially mortar delamination resistance and water-retentivity.
The composite water-retaining thickening material that is used for commodity mortar that the present invention proposes is by calcium base Peng Run soil, sodium bentonite, kaolin, sepiolite, zeolite powder, ether of cellulose), flyash and sulfonated lignin form, the weight ratio of each component is:
Calcium-base bentonite 100
Sodium bentonite 1-100
Kaolin 1-50
Sepiolite 1-40
Zeolite 1-20
Ether of cellulose 0.3-10
Flyash 0-40
Sulfonated lignin 0-30,
Wherein, the viscosity of ether of cellulose is 10000mPa.s-200000mPa.s.
The preferable weight ratio of each component is:
Calcium-base bentonite 100
Sodium bentonite 10-50
Kaolin 5-40
Sepiolite 4-30
Zeolite 5-25
Ether of cellulose (viscosity 10000mPa.s-200000mPa.s) 0.6-8
Flyash 5-30
Sulfonated lignin 0-15.
The preparation method of the composite water-retaining thickening material that is used for commodity mortar that the present invention proposes, concrete steps are:, press the weight ratio weighing each component of raw material, calcium-base bentonite, sodium bentonite, kaolin, sepiolite, zeolite powder, ether of cellulose, flyash and sulfonated lignin, mix, drop in the pulverizer and carry out grinding, less than 40%, promptly get desired product up to 0.08mm square hole sieve percentage of sieve residue.
Among the present invention, the main effect of calcium-base bentonite, sodium bentonite, kaolin, sepiolite and zeolite powder is water-swelling, cement granules is spaced from each other slurry into good distribution, and strengthen the denseness of mortar and resist segregation, delamination resistance, and also have certain hydration activity behind zeolite and the kaolin grinding, they will with hydrated cementitious product C a (OH) 2The secondary pozzolanic reaction taking place, form the hydrated calcium silicate and the aquation sulplo-aluminate of low calcium, strengthen the density of slurry in the mortar, thereby improves mortar strength.The effect of ether of cellulose is to dissolve the solution that the back forms certain viscosity, improve the viscosity of mortar, improve cement slurry to mortar medium sand particulate parcel property, reduce mortar laminated, segregation, after mortar is smeared construction, because it has good water-retentivity, can effectively stop base material to the rapid absorption of moisture in the mortar and moisture to airborne evaporation, thereby improve the splitting resistance and the water-repellancy of mortar.Ether of cellulose also has very great help for the cohesive strength that improves between the base materials such as mortar and concrete, clay brick, building block.The effect of flyash is to serve as the carrier of ether of cellulose, improves the dispersing uniformity of this lightweight macromolecular material of ether of cellulose, and flyash behind mortar hardening equally can with hydrated cementitious product C a (OH) 2The secondary pozzolanic reaction takes place, with intensity and the water-repellancy of improving mortar.Sulfonated lignin have certain plasticizing dispersiveness to mortar on the one hand, and on the other hand, it can effectively delay the rate of set of mortar, thereby prevent the commodity mortar mortar waste that too fast setting and harden causes in summer.
The present invention is fine lark powdery substance, it can disperse well with the various components in the dry-mixed mortar, also can thorough mixing and dissolving in premixing mortar, thereby make the mortar of preparing in denseness, cohesiveness, water-retentivity, homogeneity, smear application property, and aspects such as ultimate compression strength, cohesive strength, frost resistance have significantly and improve.Simultaneously, admixture product of the present invention also helps to improve operating efficiency (can realize the automatic arc spraying construction technology of mortar), reduces environmental pollution.Admixture the present invention helps to reduce water consumption and the cement consumption in the mortar, improves its cohesive strength and weather resistance, reduces shrinking percentage, reduces cracking harm.Adjust the volume of product of the present invention, can make respectively economy very ideal be used to build by laying bricks or stones, wipe one's face and the commodity mortar of the various strength grades of floor treatment.
The using method of product of the present invention for premixing mortar, is generally 5kg/m 3-45kg/m 3, and for dry-mixed mortar, its volume is generally the 2%-15% (look the purposes of commodity mortar and different) of gelling material weight.
Use product preparation commodity mortar of the present invention, save in the mortar process for preparation, test the trouble of adjustment at the construction field (site) according to customer requirements, and compare with traditional admixture, more can demonstrate product of the present invention and improve mortar, and improve ultimate compression strength, water-retentivity and the frost resistance of mortar, reduce the shrinking percentage of mortar from technical standpoint in the superiority of low ash/sand than workability under the situation, and help to regulate time of coagulation of mortar, make the mortar of the system of mixing keep good denseness in a long time.
Material of the present invention detects through authoritative department, shows that its starting material come source range wide, and product component is reasonable, production technique is simple, and storage period is long, and using method is grasped easily, and suitability is strong, environmentally safe, and can partly utilize industrial solid castoff.The mineral raw material that product of the present invention can be easy to get according to the each place selects for use most economical rational prescription tissue to produce, and satisfies the production needs of various places commodity mortar, and market outlook are fine, and rate of profit is about 30%.
Embodiment
Further specify the present invention below by embodiment.
Embodiment 1, is used for the composite water-retaining thickening material (by weight percentage, down together) of commodity mortar.Calcium-base bentonite 68.07%, sodium bentonite 6.82%, kaolin 3.40%, sepiolite 2.72%, zeolite 3.41%, ether of cellulose (viscosity 200000mPa.s) 1.97%, sulfonated lignin 0%, after flyash 13.61% mixes, drop into and carry out grinding (up to 0.08mm square hole sieve percentage of sieve residue less than 40%) in the pulverizer and form.Compare with the ground mortar of not mixing any admixture, not only workability, toughness improve the ground mortar of admixture product of the present invention (volume be gelling material weight 6%), and delamination degree has only 10mm, water retention brings up to 92% from 65%, 28d ultimate compression strength improves 5%, and cohesive strength is brought up to 0.5MPa from about 0.2MPa, and shrinking percentage reduces by 30%, the loss of strength rate reduces by 40% behind 50 freeze-thaw cycle, satisfies to do and mixes ground commodity mortar standard-required.
Embodiment 2, the composite water-retaining thickening material that is used for commodity mortar is by calcium-base bentonite 39.00%, sodium bentonite 15.60%, kaolin 15.60%, sepiolite 7.80%, zeolite 7.80%, ether of cellulose (viscosity 100000mPa.s) 2.50%, sulfonated lignin 0%, flyash 11.70% mix the back and drop into and carry out grinding (up to 0.08mm square hole sieve percentage of sieve residue less than 40%) in the pulverizer and form.Compare with the masonry mortar of not mixing any admixture, not only workability, toughness improve the masonry mortar of admixture product of the present invention (volume be gelling material weight 9%), and delamination degree has only 13mm, water retention brings up to 94% from 68%, 28d ultimate compression strength improves 8%, and cohesive strength is brought up to 0.5MPa from about 0.2MPa, and shrinking percentage reduces by 25%, the loss of strength rate reduces by 35% behind 50 freeze-thaw cycle, satisfies to do to mix and builds the commodity mortar standard-required by laying bricks or stones.
Embodiment 3, the composite water-retaining thickening material that is used for commodity mortar is by calcium-base bentonite 34.96%, sodium bentonite 17.48%, kaolin 12.24%, sepiolite 10.49%, zeolite 8.74%, ether of cellulose (viscosity 75000mPa.s) 2.80%, flyash 8.74%, sulfonated lignin 4.55% mix the back and drop into and carry out grinding (up to 0.08mm square hole sieve percentage of sieve residue less than 40%) in the pulverizer and form.Compare with the plastering mortar of not mixing any admixture, (volume is 40kg/m to admixture product of the present invention 3) motar not only workability, toughness are greatly improved, and delamination degree has only 15mm, water retention brings up to 95% from 70%, extend to 9.0h from 6.5h time of coagulation, 28d ultimate compression strength improves 6%, and cohesive strength is brought up to 0.4MPa from about 0.15MPa, and shrinking percentage reduces by 35%, the loss of strength rate reduces by 32% behind 50 freeze-thaw cycle, satisfies the premixing commodity mortar product standard requirement of plastering.
Embodiment 4, the compound bonded thickening material that is used for commodity mortar is by calcium-base bentonite 56.34%, sodium bentonite 8.15%, kaolin 10.09%, sepiolite 14.32%, zeolite 6.30%, ether of cellulose (viscosity 100000mPa.s) 3.00%, sulfonated lignin 1.8%, flyash 0% mix the back and drop into and carry out grinding (up to 0.08 square hole sieve percentage of sieve residue less than 40%) in the pulverizer and form.Compare with not producing any admixture flour milling mortar, (volume is 35kg/m to admixture product of the present invention 3) not only workability, toughness are improved motar, and delamination degree have only 12 touch silent, water retention brings up to 96% from 69%, ultimate compression strength improved 5% in 28 days, cohesive strength is brought up to about 0.4MPa from about 0.2MPa, the loss of strength rate reduced by 34% after shrinking percentage reduced by 30%, 50 freeze-thaw cycle, satisfied the premixing commodity mortar product standard requirement of plastering.

Claims (3)

1. a composite water-retaining thickening material that is used for commodity mortar is characterized in that by calcium-base bentonite, sodium bentonite, and kaolin, sepiolite, zeolite, ether of cellulose, flyash and sulfonated lignin are formed, the weight ratio of each component:
Calcium-base bentonite 100
Sodium bentonite 1-100
Kaolin 1-50
Sepiolite 1-40
Zeolite 1-20
Ether of cellulose 0.5-10
Flyash 0-40
Sulfonated lignin 0-30,
Wherein, the viscosity of ether of cellulose is 10000mPa.s-200000mPa.s.
2. the composite water-retaining thickening material that is used for commodity mortar according to claim 1 is characterized in that the weight ratio of component is:
Calcium-base bentonite 100
Sodium bentonite 10-50
Kaolin 5-40
Sepiolite 4-30
Zeolite 5-25
Ether of cellulose 0.6-8
Flyash 5-30
Sulfonated lignin 0-15.
3. a using method that is used for the composite water-retaining thickening material of commodity mortar as claimed in claim 1 is characterized in that for premixing mortar, and the add-on of composite water-retaining thickening material is 5kg/m 3-45kg/m 3For dry-mixed mortar, the add-on of composite water-retaining thickening material is the 2%-15% of gelling material weight.
CNB2007101725287A 2007-12-19 2007-12-19 A kind of composite water-retaining thickening material and using method thereof that is used for commodity mortar Active CN100558669C (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101935185A (en) * 2009-07-02 2011-01-05 余春冠 Additive for preparing mortar from fine sand
CN102211892A (en) * 2011-03-31 2011-10-12 山西巨元新型建材有限公司 Mortar thickening powder and preparation method and application thereof
CN101786826B (en) * 2010-02-05 2012-07-18 中建商品混凝土有限公司 Ready-mixed mortar thickening plasticity-maintaining agent
CN103755245A (en) * 2013-12-20 2014-04-30 安徽省美域节能环保技术应用有限公司 Composite cement mortar and preparation method thereof
CN103755290A (en) * 2013-12-20 2014-04-30 安徽省美域节能环保技术应用有限公司 Cement mortar with anti-cracking performance and preparation method thereof
CN103803912A (en) * 2013-12-20 2014-05-21 安徽省美域节能环保技术应用有限公司 Reinforced energy-saving cement mortar and preparation method thereof
CN104003646A (en) * 2014-05-20 2014-08-27 同济大学 Water-retention and thickening material used for dry-mixed mortar and application thereof
CN104276784A (en) * 2014-09-30 2015-01-14 杭州天翔新型建材有限公司 Waterproof thickening powder for dry-mixed ordinary mortar
CN106554165A (en) * 2016-11-17 2017-04-05 武汉天衣集团有限公司 The inorganic mortar anti-crack water-proof agent of WHDF S types
CN106630737A (en) * 2016-10-19 2017-05-10 安阳建工(集团)混凝土外加剂有限责任公司 Plastering mortar admixture
CN110028281A (en) * 2019-03-07 2019-07-19 常州华光建材科技有限公司 A kind of water proof type premixing mortar
CN111807744A (en) * 2020-08-04 2020-10-23 重庆思贝肯节能技术开发有限公司 Foaming cement paste inorganic thickening agent and preparation method and application thereof

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101935185A (en) * 2009-07-02 2011-01-05 余春冠 Additive for preparing mortar from fine sand
CN101786826B (en) * 2010-02-05 2012-07-18 中建商品混凝土有限公司 Ready-mixed mortar thickening plasticity-maintaining agent
CN102211892A (en) * 2011-03-31 2011-10-12 山西巨元新型建材有限公司 Mortar thickening powder and preparation method and application thereof
CN102211892B (en) * 2011-03-31 2013-09-11 山西巨元新型建材有限公司 Mortar thickening powder and preparation method and application thereof
CN103803912A (en) * 2013-12-20 2014-05-21 安徽省美域节能环保技术应用有限公司 Reinforced energy-saving cement mortar and preparation method thereof
CN103755245A (en) * 2013-12-20 2014-04-30 安徽省美域节能环保技术应用有限公司 Composite cement mortar and preparation method thereof
CN103755290A (en) * 2013-12-20 2014-04-30 安徽省美域节能环保技术应用有限公司 Cement mortar with anti-cracking performance and preparation method thereof
CN104003646A (en) * 2014-05-20 2014-08-27 同济大学 Water-retention and thickening material used for dry-mixed mortar and application thereof
CN104003646B (en) * 2014-05-20 2016-01-20 同济大学 A kind of dry-mixed mortar water-keeping thickening material and application thereof
CN104276784B (en) * 2014-09-30 2016-04-06 杭州天翔新型建材有限公司 A kind of waterproof densification powder being dry mixed ordinary mortar
CN104276784A (en) * 2014-09-30 2015-01-14 杭州天翔新型建材有限公司 Waterproof thickening powder for dry-mixed ordinary mortar
CN106630737A (en) * 2016-10-19 2017-05-10 安阳建工(集团)混凝土外加剂有限责任公司 Plastering mortar admixture
CN106630737B (en) * 2016-10-19 2018-12-04 安阳建工(集团)混凝土外加剂有限责任公司 A kind of additive for motar
CN106554165A (en) * 2016-11-17 2017-04-05 武汉天衣集团有限公司 The inorganic mortar anti-crack water-proof agent of WHDF S types
CN110028281A (en) * 2019-03-07 2019-07-19 常州华光建材科技有限公司 A kind of water proof type premixing mortar
CN111807744A (en) * 2020-08-04 2020-10-23 重庆思贝肯节能技术开发有限公司 Foaming cement paste inorganic thickening agent and preparation method and application thereof

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