CN103086638B - Mortar additive and production process thereof - Google Patents
Mortar additive and production process thereof Download PDFInfo
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- CN103086638B CN103086638B CN201310004744.6A CN201310004744A CN103086638B CN 103086638 B CN103086638 B CN 103086638B CN 201310004744 A CN201310004744 A CN 201310004744A CN 103086638 B CN103086638 B CN 103086638B
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- mortar
- ether
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- cellulose
- air entrapment
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Abstract
The invention belongs to the technical field of construction material, and particularly relates to a mortar additive, wherein the mortar additive comprises the following components in parts by weight: 1-12 parts of cellulose ether, 20-80 parts of polymer latex powder, 20-70 parts of thixotropic agent and 0.1-0.7 part of air entraining agent. The production process of the mortar additive solves the problems that the mixed mortar has low quality; the mixed mortar has poor workability, is dry and difficult to scrape; the bonding strength is low, the phenomena of hollowing and dropping are easy to appear; the shrinkage is big, the surface is easy to crack and the like. The mortar mixed with the mortar additive provided by the invention has the advantage of high combination property, such as construction property, water retention, compressive strength, bonding strength, cracking resistance and the like.
Description
Technical field
The invention belongs to building material technical field, particularly a kind of over-all properties that can improve mortar, the grout additive of easy construction and production technique thereof.
Background technology
At present on building sites, the production model that masonry mortar, motar and ground mortar still take building site now to mix.Building site existing sand cutting slurry is with low cost, but there is the problem of the following aspects:
1, formula is simple: generally only cement, river sand, and meeting with good conditionsi adds lime, and mortar over-all properties is bad; 2, raw material quality is unstable: because building site existing sand cutting slurry is less demanding, stir the low mark complex cement of the many employings of mortar, and the overall acceptability rate of this type of cement is on the low side; The river sand grating used is unstable, and cement consumption fluctuation is large; Silt content exceeds standard; 3, measure out of true: on-the-spot mixing mortar, adopts volumetric method more, namely 1 bag cement coordinates 2 ~ 3 trolley river sand; 4, stir uneven: the mixing efficiency of the used whipping device in building site is not high, and churning time is inadequate, causes the lack of homogeneity of mortar.
Based on above-mentioned reason, the mortar quality of mixing is low, and main manifestations is: poor water retention property, easily segregation, bleeding; Workability is inadequate, dry and astringent, not easily criticizes and scrapes; Cohesive strength is low, easily occurs hollowing, obscission; Shrink large, surface is easy to crack.
In order to improve the quality of existing sand cutting slurry, there are some grout additives on the market, and titled with " mortar king ", " mortar is precious ".This series products is mainly based on air entrapment agent, and air entrapment agent can introduce a large amount of micro-bubbles, and these bubbles are present in mortar, and similar ball is the same, reduces the frictional force between particles of aggregates, and make mortar be easy to stir, application property improves simultaneously.The wet density of mortar declines, and mortar becomes slim and graceful, improves the output of mortar simultaneously.
Increase because amount of air entrainment improves along with the volume of mortar king or mortar treasured, construction worker is in order to convenient construction, and often excess is added, and the consequence of generation is that the degree of compactness of mortar declines, and ultimate compression strength is low, easily occurs mortar powder phenomenon-tion.Also have and a bit need additionally mention, air entrapment agent there is no water retention, and therefore mortar moisture is lost very fast, and not maintenance after construction, can cause the intensity of mortar to reduce, and top layer efflorescence and cohesive strength decline.
Summary of the invention
An object of the present invention is: for the deficiencies in the prior art, and a kind of grout additive is provided, substitute the grout additive based on air entrapment agent that current construction site uses, mortar of the present invention is used to have higher over-all properties, as application property, water-retentivity, ultimate compression strength, cohesive strength, the advantage of splitting resistance etc.
To achieve these goals, the present invention adopts following technical scheme: a kind of grout additive, by weight, comprises following component:
Ether of cellulose 1-12 part;
Polymer emulsion powder 20-80 part;
Thixotropic agent 20-70 part;
Air entrapment agent 0.1-0.7 part.
One as grout additive of the present invention is improved, and by weight, comprises following component:
Ether of cellulose 3-10 part;
Polymer emulsion powder 35-65 part;
Thixotropic agent 35-55 part;
Air entrapment agent 0.1-0.5 part.
One as grout additive of the present invention is improved, and by weight, comprises following component:
Ether of cellulose 7.2 parts;
Polymer emulsion powder 52.1 parts;
Thixotropic agent 40.4 parts;
Air entrapment agent 0.3 part.
One as grout additive of the present invention is improved, and ether of cellulose is at least one in methyl hydroxyethylcellulose ether, methyl cellulose ether, hydroxyethyl ether cellulose and hydroxypropyl methyl cellulose ether.
One as grout additive of the present invention is improved, and polymer emulsion powder is at least one in VAE, vinyl acetate homopolymer, styrene-butadiene copolymer and acrylic styrene copolymer.
One as grout additive of the present invention is improved, and thixotropic agent is at least one in sodium bentonite, lithium bentonite and calcium-base bentonite.
One as grout additive of the present invention is improved, and air entrapment agent is at least one of alkyl benzene sulfonate, nonionogenic tenside, alkyl phenol ethylene oxide condenses class and wooden naphthenic acid salt.
In addition, ether of cellulose act as water conservation and thickening, good water-retaining property in mortar, and slurry stability is high, and moisture not easily scatters and disappears, and reduces the plastic cracking that early stage moisture rapid evaporation causes, and the hydrated cementitious simultaneously in mortar is more abundant, improves the ultimate compression strength of mortar.Mortar becomes soft, constructs more laborsaving, improves work efficiency.
Polymer emulsion powder is acted on by polymer bridging, adds the cohesive strength of mortar to smooth basal plane (as concrete), compensate for the high and disadvantage of cohesive strength difference of sand-cement slurry ultimate compression strength.
Thixotropic agent joins sand-cement slurry, the sticky cutter effect caused because of mortar thickness when can reduce construction, and popular saying reduces the viscosity of mortar, criticizes when scraping mortar more suitable refreshing.Another effect of thixotropic agent is the anti-tenesmus ability improving mortar, and thick-layer construction is not sagging, improves thickness of once constructing.
The amount of air entrainment of air entrapment agent used in the present invention is lower, its role is to improve mortar plasticity, even if excess is added when reality uses, the bubbles volume of introducing is limited, very faint on the ultimate compression strength impact of mortar.
The present invention be applied on mortar, add the present invention by 1 ~ 1.5% of mortar gross weight, cement, river sand and the present invention are put in proportion in stirrer, dry mixing mixes to mortar, adds clear water in proportion, is stirred to mortar and mixes and can use.
After with the addition of grout additive of the present invention, the indices of mortar can reach JG230-2007 " premixing mortar " M15.
| Project | Standard value | Measured value |
| Ultimate compression strength (MPa) | 15 | 19.5 |
| Time of coagulation (h) | 3~8 | 4 |
| Water-retentivity (%) | ≥88 | 95 |
| 14 days cohesive strengths (MPa) | ≥0.2 | 0.6 |
Relative to prior art, the mortar quality that the invention solves mixing is low; Workability is inadequate, dry and astringent, not easily criticizes and scrapes; Cohesive strength is low, easily occurs hollowing, obscission; Shrink large, the problems such as surface is easy to crack, use mortar of the present invention to have higher over-all properties, as application property, water-retentivity, ultimate compression strength, cohesive strength, and the advantage of splitting resistance etc.
Another object of the present invention is the production technique of the grout additive provided described in more than one, comprises the following steps:
Step one, takes raw material by proportioning: ether of cellulose, polymer emulsion powder, thixotropic agent, air entrapment agent;
Step 2, puts into conical double ribbon by ether of cellulose, polymer emulsion powder, thixotropic agent and air entrapment agent and revolves in stirrer, stir, and stirs 10 minutes;
Step 3, revolves bottom stirrer from conical double ribbon and releases 1-10% compound, proceeds to stir;
Step 4, drops into again by the compound of releasing in taper twin-shaft mixer, stirs 10 minutes, can obtain grout additive.
One as the production technique of grout additive of the present invention is improved, and the air entrapment agent described in step 2 adds being dosed into a half again.
One as the production technique of grout additive of the present invention is improved, and the time length of stirring described in step 3 is 5-60 minute.
Relative to prior art, flow process of the present invention is simple, easy to operate, and time-consuming less, adopt the grout additive that the method is obtained, mortar can be made to have higher over-all properties, as application property, water-retentivity, ultimate compression strength, cohesive strength, the advantage of splitting resistance etc.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
Present embodiments provide one by weight, grout additive comprises following component:
3.2 parts, methyl hydroxyethylcellulose ether;
Methyl cellulose ether 4 parts;
VAE 22.1 parts;
Vinyl acetate homopolymer 30 parts;
Sodium bentonite 40.4 parts;
Alkyl benzene sulfonate 0.3 part.
Its production technique is as follows:
Step one, takes methyl hydroxyethylcellulose ether 3.2kg, methyl cellulose ether 4kg, VAE 22.1kg, vinyl acetate homopolymer 30kg, sodium bentonite 40.4kg, alkyl benzene sulfonate 0.3kg respectively;
Step 2, puts into conical double ribbon by methyl hydroxyethylcellulose ether, methyl cellulose ether, VAE, vinyl acetate homopolymer, sodium bentonite and alkyl benzene sulfonate and revolves in stirrer, stir, and stirs 10 minutes; Wherein, alkyl benzene sulfonate adds being dosed into a half again;
Step 3, revolves the compound of releasing 5kg bottom stirrer from conical double ribbon, proceed to stir;
Step 4, drops into again by the compound of releasing in taper twin-shaft mixer, stirs 10 minutes, can obtain grout additive.
Embodiment 2
Present embodiments provide one by weight, grout additive comprises following component:
Hydroxyethyl ether cellulose 3.2 parts;
Hydroxypropyl methyl cellulose ether 5.3 parts;
Styrene-butadiene copolymer 18.1 parts;
Acrylic styrene copolymer 26.3 parts;
Sodium bentonite 15.5 parts;
Lithium bentonite 31.3 parts;
Nonionogenic tenside 0.1 part;
Alkyl phenol ethylene oxide condenses class 0.2 part.
Its production technique is as follows:
Step one, takes hydroxyethyl ether cellulose 3.2kg, hydroxypropyl methyl cellulose ether 5.3kg, styrene-butadiene copolymer 18.1kg, acrylic styrene copolymer 26.3kg, sodium bentonite 15.5kg, lithium bentonite 31.3kg, nonionogenic tenside 0.1kg, alkyl phenol ethylene oxide condenses class 0.2kg respectively;
Step 2, hydroxyethyl ether cellulose, hydroxypropyl methyl cellulose ether, styrene-butadiene copolymer, acrylic styrene copolymer, sodium bentonite, lithium bentonite, nonionogenic tenside, alkyl phenol ethylene oxide condenses class are put into conical double ribbon and revolved in stirrer, stir, stir 10 minutes; Wherein, nonionogenic tenside and alkyl phenol ethylene oxide condenses class add being dosed into a half again;
Step 3, revolves the compound of releasing 8kg bottom stirrer from conical double ribbon, proceed to stir;
Step 4, drops into again by the compound of releasing in taper twin-shaft mixer, stirs 10 minutes, can obtain grout additive.
Embodiment 3
Present embodiments provide one by weight, grout additive comprises following component:
Hydroxyethyl ether cellulose 1.5 parts;
Methyl cellulose ether 3.3 parts;
Vinyl acetate homopolymer 19 parts;
Acrylic styrene copolymer 30.3 parts;
Sodium bentonite 20 parts;
Calcium-base bentonite 25.5 parts;
Nonionogenic tenside 0.2 part;
Wooden naphthenic acid salt 0.2 part.
Its production technique is as follows:
Step one, takes hydroxyethyl ether cellulose 1.5kg, methyl cellulose ether 3.3kg, vinyl acetate homopolymer 19kg, acrylic styrene copolymer 30.3kg, sodium bentonite 20kg, calcium-base bentonite 25.5kg, nonionogenic tenside 0.2kg, wooden naphthenic acid salt 0.2kg respectively;
Step 2, hydroxyethyl ether cellulose, methyl cellulose ether, vinyl acetate homopolymer, acrylic styrene copolymer, sodium bentonite, calcium-base bentonite, nonionogenic tenside, wooden naphthenic acid salt are put into conical double ribbon and revolved in stirrer, stir, stir 10 minutes; Wherein, nonionogenic tenside and wooden naphthenic acid salt add being dosed into a half again;
Step 3, revolves the compound of releasing 4kg bottom stirrer from conical double ribbon, proceed to stir;
Step 4, drops into again by the compound of releasing in taper twin-shaft mixer, stirs 10 minutes, can obtain grout additive.
Embodiment 4
Present embodiments provide one by weight, grout additive comprises following component:
3.2 parts, methyl hydroxyethylcellulose ether;
Hydroxypropyl methyl cellulose ether 5.3 parts;
VAE 24.3 parts;
Acrylic styrene copolymer 26.8 parts;
Sodium bentonite 40.2 parts;
Alkyl benzene sulfonate 0.2 part.
Its production technique is as follows:
Step one, takes methyl hydroxyethylcellulose ether 3.2kg, hydroxypropyl methyl cellulose ether 5.3kg, VAE 24.3 kg, acrylic styrene copolymer 26.8 kg, sodium bentonite 40.2 kg, alkyl benzene sulfonate 0.2 kg respectively;
Step 2, methyl hydroxyethylcellulose ether, hydroxypropyl methyl cellulose ether, VAE, acrylic styrene copolymer, sodium bentonite, alkyl benzene sulfonate are put into conical double ribbon and revolved in stirrer, stir, stir 10 minutes; Wherein, alkyl benzene sulfonate adds being dosed into a half again;
Step 3, revolves the compound of releasing 6kg bottom stirrer from conical double ribbon, proceed to stir;
Step 4, drops into again by the compound of releasing in taper twin-shaft mixer, stirs 10 minutes, can obtain grout additive.
Embodiment 5
Present embodiments provide one by weight, grout additive comprises following component:
Methyl cellulose ether 4.8 parts;
Hydroxyethyl ether cellulose 4.6 parts;
Styrene-butadiene copolymer 30 parts;
Vinyl acetate homopolymer 21 parts;
Lithium bentonite 39.1 parts;
Alkyl phenol ethylene oxide condenses class 0.5 part.
Its production technique is as follows:
Step one, takes methyl cellulose ether 4.8kg, hydroxyethyl ether cellulose 4.6kg, styrene-butadiene copolymer 30kg, vinyl acetate homopolymer 21kg, lithium bentonite 39.1kg, alkyl phenol ethylene oxide condenses class 0.5kg respectively;
Step 2, puts into conical double ribbon revolve in stirrer by methyl cellulose ether, hydroxyethyl ether cellulose, styrene-butadiene copolymer, vinyl acetate homopolymer, lithium bentonite, alkyl phenol ethylene oxide condenses class, stir, stir 10 minutes; Wherein, alkyl phenol ethylene oxide condenses class adds being dosed into a half again;
Step 3, revolves the compound of releasing 10kg bottom stirrer from conical double ribbon, proceed to stir;
Step 4, drops into again by the compound of releasing in taper twin-shaft mixer, stirs 10 minutes, can obtain grout additive.
Add grout additive of the present invention by 1 ~ 1.5% of mortar gross weight, cement, river sand and the present invention are put in proportion in stirrer, dry mixing mixes to mortar, adds clear water in proportion, is stirred to mortar and mixes and can use; The mortar using grout additive of the present invention to make has higher over-all properties, as application property, water-retentivity, ultimate compression strength, cohesive strength, and the advantage of splitting resistance etc.
In addition, because ether of cellulose act as water conservation and thickening, good water-retaining property in mortar, slurry stability is high, and moisture not easily scatters and disappears, and reduces the plastic cracking that early stage moisture rapid evaporation causes, hydrated cementitious simultaneously in mortar is more abundant, improves the ultimate compression strength of mortar.Mortar becomes soft, constructs more laborsaving, improves work efficiency.
Polymer emulsion powder is acted on by polymer bridging, adds the cohesive strength of mortar to smooth basal plane (as concrete), compensate for the high and disadvantage of cohesive strength difference of sand-cement slurry ultimate compression strength.
Thixotropic agent joins sand-cement slurry, the sticky cutter effect caused because of mortar thickness when can reduce construction, and popular saying reduces the viscosity of mortar, criticizes when scraping mortar more suitable refreshing.Another effect of thixotropic agent is the anti-tenesmus ability improving mortar, and thick-layer construction is not sagging, improves thickness of once constructing.
The amount of air entrainment of air entrapment agent used in the present invention is lower, its role is to improve mortar plasticity, even if excess is added when reality uses, the bubbles volume of introducing is limited, very faint on the ultimate compression strength impact of mortar.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned embodiment and revise.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this specification sheets, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (2)
1. a grout additive, is characterized in that, by weight, comprises following component:
Ether of cellulose 7.2 parts;
Polymer emulsion powder 52.1 parts;
Thixotropic agent 40.4 parts;
Air entrapment agent 0.3 part;
Described ether of cellulose is at least one in methyl hydroxyethylcellulose ether, methyl cellulose ether, hydroxyethyl ether cellulose and hydroxypropyl methyl cellulose ether;
Described polymer emulsion powder is at least one in VAE, vinyl acetate homopolymer, styrene-butadiene copolymer and acrylic styrene copolymer;
Described air entrapment agent is at least one in nonionogenic tenside, alkyl phenol ethylene oxide condenses class and wooden naphthenic acid salt; Described thixotropic agent is at least one in sodium bentonite, lithium bentonite and calcium-base bentonite.
2. a production technique for grout additive according to claim 1, is characterized in that, comprises the following steps:
Step one, takes raw material by proportioning: ether of cellulose, polymer emulsion powder, thixotropic agent, air entrapment agent;
Step 2, puts into conical double ribbon by ether of cellulose, polymer emulsion powder, thixotropic agent and air entrapment agent and revolves in stirrer, stir, and stirs 10 minutes;
Step 3, revolves bottom stirrer from conical double ribbon and releases 1-10% compound, proceeds to stir;
Step 4, drops into again by the compound of releasing in taper twin-shaft mixer, stirs 10 minutes, can obtain grout additive;
Air entrapment agent described in step 2 adds being dosed into a half again;
The time length of stirring described in step 3 is 5-60 minute.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310004744.6A CN103086638B (en) | 2013-01-08 | 2013-01-08 | Mortar additive and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310004744.6A CN103086638B (en) | 2013-01-08 | 2013-01-08 | Mortar additive and production process thereof |
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| CN103086638A CN103086638A (en) | 2013-05-08 |
| CN103086638B true CN103086638B (en) | 2015-07-08 |
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| CN104250081A (en) * | 2013-06-28 | 2014-12-31 | 北京环球大众机械设备有限公司 | Novel steaming-free air-adding brick formula and production technology thereof |
| CN106082836A (en) * | 2016-05-30 | 2016-11-09 | 四川鸥克建设工程有限公司 | The anticracking grout installed for Light trabs, squeegee |
| CN106082771B (en) * | 2016-06-24 | 2018-08-14 | 桂林华越环保科技有限公司 | Concrete water-retaining agent |
| CN106431071A (en) * | 2016-09-28 | 2017-02-22 | 四会市恒星智能科技有限公司 | Efficient poison-free mortar plasticizer and preparation method thereof |
| CN107488001A (en) * | 2017-08-22 | 2017-12-19 | 东莞市西牛建材科技有限公司 | A kind of mortar glue and preparation method thereof |
| CN108424036A (en) * | 2018-05-07 | 2018-08-21 | 滁州市炬基节能新型建材有限公司 | Additive of dry-mixed mortar and preparation method thereof |
| CN109704610A (en) * | 2019-01-28 | 2019-05-03 | 江苏奔拓电气科技有限公司 | A kind of preparation method of high temperature resistant thixotropic agent |
| CN112028535A (en) * | 2019-06-04 | 2020-12-04 | 韩超 | Mortar glue for building mortar |
| CN111423177A (en) * | 2020-04-02 | 2020-07-17 | 成都松立建材有限责任公司 | Dry-mixed mortar and production process thereof |
| CN111908863B (en) * | 2020-07-15 | 2022-11-04 | 中建二局第一建筑工程有限公司 | Plastic formwork concrete wall surface plastering mortar and preparation method thereof |
| CN112777961A (en) * | 2021-01-08 | 2021-05-11 | 上海伟星新材料科技有限公司 | Multifunctional mortar bonding additive and preparation method thereof |
Citations (1)
| 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 |
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2013
- 2013-01-08 CN CN201310004744.6A patent/CN103086638B/en not_active Expired - Fee Related
Patent Citations (1)
| 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 |
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Effective date of registration: 20190801 Address after: 523000 Room 416, Block G, Yanhe Commercial and Residential Area, 116 Canal East Third Road, Nancheng District, Dongguan City, Guangdong Province Patentee after: Huang Mingjie Address before: 442500 No. 12 Yunshan Road, Laocheng Street, Chengguan Town, Yunxian City, Shiyan City, Hubei Province Patentee before: Zhang Ligong |
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