CN105399359B - A kind of long-acting motar additive - Google Patents
A kind of long-acting motar additive Download PDFInfo
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- CN105399359B CN105399359B CN201511025222.XA CN201511025222A CN105399359B CN 105399359 B CN105399359 B CN 105399359B CN 201511025222 A CN201511025222 A CN 201511025222A CN 105399359 B CN105399359 B CN 105399359B
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- Prior art keywords
- motar
- additive
- acting
- long
- mortar
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Abstract
The invention belongs to building material technical field, and in particular to a kind of long-acting motar additive.The additive is made up of sodium gluconate, polyethylene glycol oxide, polycarboxylate water-reducer, sodium chloride and sodium lignin sulfonate, sodium acetate.The long-acting motar additive of the present invention, reasonable recipe, can effectively improve the operating handle of mortar, water-retaining property, stick poly- property and with the cohesiveness of basic unit, compatibility, there is important actual application value.
Description
Technical field
The invention belongs to building material technical field, and in particular to a kind of long-acting motar additive and application thereof.
Background technology
Commodity mortar is the New Building Materials to grow up in recent years in China, has that speed of application is fast, quality is easy
Guarantee, environmental protection construction, multiple functions, beneficial to building new technology and Modern Construction technology popularization the advantages that, meet China warp
Ji development and construction industry development trend.Commodity mortar is the main composition that ensures commodity mortar quality and function with additive,
The guarantee of extensive stock mortar quality and the chemistry and mineral additive that are mainly obtained by introducing various performances of functionalization
Come what is realized.Commodity mortar can be divided into premixing mortar and dry powder and mortar from production and form of construction work；It can be divided into from purposes general
Logical mortar and extraordinary mortar, common premixing mortar includes ground mortar, masonry mortar, 3 kinds of motar, wherein for plastering sand
The performance requirement highest of slurry, including the operating handle of mortar, water-retaining property, stick poly- property and with the cohesiveness of basic unit, compatible deformation
Performance etc..Although China's grout additive is studied with the existing certain progress of application, the state with grout additive mature
Family compares, and also there is a big difference, and existing grout additive much can not meet actual demand.Therefore, strengthen improving China
The research and development of commodity mortar additive is very urgent.
The content of the invention
In order to meet construction demand, the invention provides a kind of long-acting motar additive, operating handle to mortar,
Water-retaining property, stick poly- property and be significantly improved with the cohesiveness of basic unit, compatible deformation performance etc..
A kind of long-acting motar additive of the present invention, subtracts comprising sodium gluconate, polyethylene glycol oxide, polycarboxylic acids
Aqua, sodium chloride, sodium lignin sulfonate, sodium acetate, wherein each component mass percent are as follows：
Preferably, the additive also includes sodium lignin sulfonate ＜ 0.2 and sodium acetate ＜ 0.2, with quality percentage
Than meter.
Preferably, the additive each component mass percent is as follows：
Another aspect of the present invention additionally provides purposes of the described long-acting motar additive in motar.
Preferably, the prescription of the motar is cement, sand, water, the long-acting motar additive of the present invention.
Dosage of the long-acting motar additive in motar is 0.05-3%.
Preferably, dosage of the long-acting motar additive in motar is 0.1-1.5%.
Preferably, dosage of the long-acting motar additive in motar is 0.5%.
It is further preferred that the prescription of the motar is cement:Sand:Water:Long-acting motar additive=1:9:
0.99:0.005。
It is to be weighed by above-mentioned mass percent present invention also offers the preparation method of the long-acting motar additive
Each component, add in batch mixer, be sufficiently mixed uniformly, you can obtain corresponding product.
Further compared with prior art, long-acting motar additive of the present invention has following unexpected
Technique effect：
1) to the influence of M15 motar workability.After the long-acting motar additive of the addition present invention, with control group phase
Compare, sophistication and the operating handle of mortar are lifted, and bleeding, water-retaining property are not improved, and mortar workability is improved, and shows this hair
Bright additive is preferable to the workability and water-retaining property effect for improving mortar.
2) to the influence of M15 motars denseness and delamination degree.After the long-acting motar additive of the addition present invention, mortar
The machine denseness that goes out be 110-120min, be 80-90mm after 4h, loss late drops to 25.0%-33.3%, and the workability of mortar is protected
The ability of holding is significantly improved, and is more beneficial for meeting site operation requirement.
After the long-acting motar additive of the addition present invention, the delamination degree of mortar is 11-13mm, and water-retaining property significantly improves,
Show that the long-acting motar additive of the present invention is preferable to the water-retaining property effect for improving mortar.
3) to the influence of M15 motar setting times.After the long-acting motar additive of the addition present invention, setting time
For 19.0-20.5h, there is significant retarding action to the setting time of mortar.
4) to the influence of M15 motar 28d compression strength.After the long-acting motar additive of the addition present invention, 28d resists
Compressive Strength is 21.2-23.8MPa, and the compression strength of mortar is obviously improved.
In addition, motar mechanical property and shrinkage (including 14d tensile bond strengths, 28d shrinkage factors) detection examination
Test and meet standard requirement, and mortar 1-6 test result will be due to control group and comparative example 1.
So use workability and manipulator that mortar can be obviously improved after the long-acting motar additive of the present invention
Sense, no isolation bleeding, operable time reach 19.0-20.5h, and the service behaviour of mortar is fully able to meet site operation requirement,
Bonded preferably with base course wall and the receipts water time is moderate, be easy to large area plastering construction, efficiency of construction, postmenstruation can be greatly improved
Calibrating, all metopes produce without hollowing cracking or contraction crack.
Embodiment
The present invention is further described below by way of specific embodiment, but the present invention is not limited only to implement in detail below
Example.Within the scope of the invention or do not departing from present disclosure, in spirit and scope, the change that is carried out to the present invention,
Combination is replaced, and will be apparent to the person skilled in the art, and be included within the scope of the present invention.
Embodiment 1
Listed mass percent weighs each component of the present invention according to the form below 1：
| Component | Match (mass percent (%)) |
| Sodium gluconate | 58.0 |
| Polyethylene glycol oxide | 21.0 |
| Polycarboxylate water-reducer | 20.0 |
| Sodium chloride | 1.0 |
Preparation technology：Each component is weighed according to above-mentioned mass percent, is added in batch mixer, is sufficiently mixed uniformly, you can
Obtain corresponding product.
Embodiment 2
Listed mass percent weighs each component of the present invention according to the form below 2：
| Component | Match (mass percent (%)) |
| Sodium gluconate | 58.0 |
| Polyethylene glycol oxide | 20.9 |
| Polycarboxylate water-reducer | 20.0 |
| Sodium chloride | 0.9 |
| Sodium lignin sulfonate | 0.1 |
| Sodium acetate | 0.1 |
Preparation technology is the same as embodiment 1.
Embodiment 3
Listed mass percent weighs each component of the present invention according to the form below 3：
| Component | Match (mass percent (%)) |
| Sodium gluconate | 57.0 |
| Polyethylene glycol oxide | 21.0 |
| Polycarboxylate water-reducer | 21.0 |
| Sodium chloride | 1.0 |
Preparation technology is the same as embodiment 1.
Embodiment 4
Listed mass percent weighs each component of the present invention according to the form below 4：
| Component | Match (mass percent (%)) |
| Sodium gluconate | 59.0 |
| Polyethylene glycol oxide | 20.6 |
| Polycarboxylate water-reducer | 19.0 |
| Sodium chloride | 1.2 |
| Sodium lignin sulfonate | 0.1 |
| Sodium acetate | 0.1 |
Preparation technology is the same as embodiment 1.
Embodiment 5
Listed mass percent weighs each component of the present invention according to the form below 5：
The long-acting motar additive formula (mass percent (%)) of the present invention of table 5.
| Component | Match (mass percent (%)) |
| Sodium gluconate | 58.0 |
| Polyethylene glycol oxide | 22.0 |
| Polycarboxylate water-reducer | 19.0 |
| Sodium chloride | 0.8 |
| Sodium lignin sulfonate | 0.1 |
| Sodium acetate | 0.1 |
Preparation technology is the same as embodiment 1.
Embodiment 6
Listed mass percent weighs each component of the present invention according to the form below 6：
| Component | Match (mass percent (%)) |
| Sodium gluconate | 58.0 |
| Polyethylene glycol oxide | 20.0 |
| Polycarboxylate water-reducer | 21.0 |
| Sodium chloride | 0.9 |
| Sodium lignin sulfonate | 0.05 |
| Sodium acetate | 0.05 |
Preparation technology is the same as embodiment 1.
Comparative example 1
Listed mass percent weighs each component of the present invention according to the form below 7：
| Component | Match (mass percent (%)) |
| Sodium gluconate | 50.0 |
| Polyethylene glycol oxide | 24 |
| Polycarboxylate water-reducer | 24 |
| Sodium chloride | 1.6 |
| Sodium lignin sulfonate | 0.2 |
| Sodium acetate | 0.2 |
Preparation technology is the same as embodiment 1.
Application of the long-acting motar additive of the present invention of embodiment 7 in M15 motars
1) raw material：
Cement：Using P.042.5R cement, i.e. ordinary cement, specific performance index see the table below 8.
Sand：Common Machine-made Sand, screen out the particle more than 2.36mm, modulus of fineness 2.1, content of stone powder 4.5%, clay content
0.5%.
Additive：Long-acting motar additive prepared by embodiment 1-6, comparative example 1.
Water：Running water, comply with the national standard requirements.
2) test method：
Mortar 1-6 adds the long-acting motar additive prepared by embodiment 1-6 respectively, and mortar 1-6 motars are set
The specific proportioning of meter formula is shown in Table 9.Comparative example 1 adds the long-acting motar additive prepared by comparative example 1, and comparative example 1 is plastered
Specifically proportioning is shown in Table 9 to mortar component design.
Motar performance test mainly includes water-retaining property, denseness, compression strength etc., and its requirement meets GB/T2518-
2010《Premixing mortar》And JGJ/T220-2010《Motar technical regulation》It is required that specific method of testing is according to JGJ/T70-
2009《Building mortar basic performance method of testing standard》Perform.
Table 9.M15 motar design mixture proportions
| Numbering | Cement | Sand | Water | Long-acting motar additive |
| Control group | 1 | 9 | 0.99 | -- |
| Mortar 1 | 1 | 9 | 0.99 | 0.005 |
| Mortar 2 | 1 | 9 | 0.99 | 0.005 |
| Mortar 3 | 1 | 9 | 0.99 | 0.005 |
| Mortar 4 | 1 | 9 | 0.99 | 0.005 |
| Mortar 5 | 1 | 9 | 0.99 | 0.005 |
| Mortar 6 | 1 | 9 | 0.99 | 0.005 |
| Comparative example 1 | 1 | 9 | 0.99 | 0.005 |
3) test result：
Table 10.M15 motars service behaviour detects result of the test
As can be seen from the above table：
(1) to the influence of M15 motar workability
After control group goes out machine, the water-retaining property of mortar is poor, and bleeding is more, and workability is poor, and operating handle is poor, tight after 4h
Weight bleeding.After comparative example 1 goes out machine, the poor water retention property of mortar, pliability is general, and elasticity is general, and glutinous poly- property is poor, and bleeding is more, no
Isolation, mobility is general, and workability is poor, and bleeding is more after 4h.In mortar 1-6, the long-acting motar addition of the addition present invention
After agent, compared with control group and comparative example 1, sophistication and the operating handle of mortar are lifted, and bleeding, water-retaining property do not improve, sand
Slurry workability is improved, and shows that additive of the present invention is preferable to the workability and water-retaining property effect for improving mortar.
(2) influence of M15 motars denseness and delamination degree
Denseness is to evaluate an important indicator of mortar mobility.The machine denseness that goes out of control group is 90mm, is 50mm after 4h,
Loss late reaches 44.4%, and the machine denseness that goes out of comparative example 1 is 100mm, is 60mm after 4h, loss late reaches 40.0%, in mortar
In 1-6, after the long-acting motar additive of the addition present invention, the machine denseness that goes out of mortar is 110-120min, is 80- after 4h
90mm, loss late drop to 25.0%-33.3%, and the workability holding capacity of mortar is significantly improved, and are more beneficial for full
Sufficient site operation requirement.
Water-retaining property refers to the ability that mortar keeps moisture, and water-retaining property is generally detected and evaluated with delamination degree, according to
To the requirement of motar delamination degree in JGJ/T220-2010, the delamination degree of motar is preferably 10-20mm, and delamination degree is too big
Easily isolation, delamination degree is too small, and drying shrinkage is also easy to produce after mortar hardening and is cracked.The delamination degree of control group is 25mm, and comparative example 1 is divided
Depth is 21mm, and in mortar 1-6, after the long-acting motar additive of the addition present invention, the delamination degree of mortar is 11-13mm,
Meet specification suggestiveness numerical value, can significantly improve the water-retaining property of mortar, meet the requirement of site operation.
(3) to the influence of M15 motar setting times.
In mortar 1-6, after the long-acting motar additive of the addition present invention, setting time 19.0-20.5h is and right
Compared according to group (setting time 16.0h), comparative example 1 (setting time 17.0h), have to setting time of mortar and significantly delay
Effect.
(4) to the influence of M15 motar 28d compression strength.
In mortar 1-6, after the long-acting motar additive of the addition present invention, 28d compression strength is 21.2-23.8MPa,
Compared with control group (28d compression strength is 16.8MPa), comparative example 1 (28d compression strength is 17.2MPa), mortar is resisted
Compressive Strength is obviously improved.
Claims (4)
1. a kind of long-acting motar additive, it is characterised in that the additive is by sodium gluconate, polyethylene glycol oxide, poly-
Carboxylic acid water reducer, sodium chloride composition, wherein each component mass percent are as follows：
Sodium gluconate 57.0-59.0
Polyethylene glycol oxide 20.0-22.0
Polycarboxylate water-reducer 19.0-21.0
Sodium chloride 0.8-1.2；
Purposes of the long-acting motar additive in motar, the motar include cement, sand, water, long-acting
Motar additive, dosage of the long-acting motar additive in motar are 0.1-3%, the motar
Component in cement:Sand:Water weight ratio=1:9:0.99.
2. long-acting motar additive as claimed in claim 1, it is characterised in that by percentage to the quality, the addition
Agent also includes sodium lignin sulfonate ＜ 0.2 and sodium acetate ＜ 0.2.
3. long-acting motar additive as claimed in claim 2, it is characterised in that the additive each component quality percentage
Than as follows：
Sodium gluconate 58.0
Polyethylene glycol oxide 20.9
Polycarboxylate water-reducer 20.0
Sodium chloride 0.9
Sodium lignin sulfonate 0.1
Sodium acetate 0.1.
4. long-acting motar additive as claimed in claim 1, it is characterised in that the long-acting motar additive exists
Dosage in motar is 0.1-1.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511025222.XA CN105399359B (en) | 2015-12-30 | 2015-12-30 | A kind of long-acting motar additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511025222.XA CN105399359B (en) | 2015-12-30 | 2015-12-30 | A kind of long-acting motar additive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105399359A CN105399359A (en) | 2016-03-16 |
| CN105399359B true CN105399359B (en) | 2017-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511025222.XA Expired - Fee Related CN105399359B (en) | 2015-12-30 | 2015-12-30 | A kind of long-acting motar additive |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704645A (en) * | 2009-11-30 | 2010-05-12 | 俞锡贤 | Water-holding thickening agent of mortar |
| CN104030595A (en) * | 2014-04-30 | 2014-09-10 | 岳阳跃坤环保建材科技有限公司 | Compound concrete admixture with early strength and water reduction functions, and preparation method and application thereof |
| CN104072004A (en) * | 2014-07-11 | 2014-10-01 | 北京博润佳科技有限公司 | Antifreeze agent for mortar |
| CN104211341A (en) * | 2014-09-09 | 2014-12-17 | 广西横县恒丰建材有限责任公司 | Ready-mixed plastering mortar for interior wall and production method of ready-mixed plastering mortar |
-
2015
- 2015-12-30 CN CN201511025222.XA patent/CN105399359B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704645A (en) * | 2009-11-30 | 2010-05-12 | 俞锡贤 | Water-holding thickening agent of mortar |
| CN104030595A (en) * | 2014-04-30 | 2014-09-10 | 岳阳跃坤环保建材科技有限公司 | Compound concrete admixture with early strength and water reduction functions, and preparation method and application thereof |
| CN104072004A (en) * | 2014-07-11 | 2014-10-01 | 北京博润佳科技有限公司 | Antifreeze agent for mortar |
| CN104211341A (en) * | 2014-09-09 | 2014-12-17 | 广西横县恒丰建材有限责任公司 | Ready-mixed plastering mortar for interior wall and production method of ready-mixed plastering mortar |
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| CN105399359A (en) | 2016-03-16 |
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Granted publication date: 20171110 Termination date: 20181230 |