CN108675676A - It is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture - Google Patents
It is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture Download PDFInfo
- Publication number
- CN108675676A CN108675676A CN201810444084.6A CN201810444084A CN108675676A CN 108675676 A CN108675676 A CN 108675676A CN 201810444084 A CN201810444084 A CN 201810444084A CN 108675676 A CN108675676 A CN 108675676A
- Authority
- CN
- China
- Prior art keywords
- mortar
- agstone
- admixture
- low temperature
- dry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
It is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, the weight percent of each material is in the additive：Cellulose ether is 20% 30%, starch ether is 8% 10%, maltodextrin is 10% 15%, thixotropic lubricant is 5% 10%, water-reducing agent is 4% 8%, air entraining agent is 3% 5%, redisperable polymer powder is 10% 20%, bentonite is 20% 30%.This invention provides both the good water retention property of mortar mixture, and can improve cellulose ether and lead to mortar mixture setting time long problem under low temperature environment in winter；Starch ether, thixotropic lubricant and air entraining agent are used in combination so that mortar mixture also ensures its plasticity under higher apparent density；Redisperable polymer powder significantly improves mortar to the adhesive property of base material, flexibility and deformability, so as to improve hollowing, the cracking and the problem of the dusting of surface after mortar mortar hardening.
Description
Technical field
The present invention relates to a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture.
Background technology
China is currently under infrastructure construction peak period, and premixing mortar is that one kind that China's developed recently gets up is novel
Construction material, can be divided into dry-mixed mortar and wet mixing mortar, and advantage is health environment-friendly, stable quality, energy saving comfortable etc., many
Site mortar is also gradually being forbidden in city, accelerates premixing mortar and promotes the use of.Research in recent years confirms agstone
It can be used as mineral admixture to be applied in dry-mixed mortar, the deficiency of flyash supply can be effectively relieved, but in current practical work
There is also defects by Cheng Yingyong.For example, it is tacky mortar mixture easily occur in agstone incorporation dry-mixed mortar, sand has been seriously affected
Starch the workability of mixture；Meanwhile mortar compression strength, adhesion strength can be reduced in agstone incorporation dry-mixed mortar, from
And occur the problem of hollowing, cracking and surface dusting after leading to mortar hardening, this problem in winter under low temperature environment more
Obviously.
Invention content
It is an object of the invention to provide a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, with
Hollowing, cracking and surface dusting after the dry-mixed mortar hardening that the agstone in prior art problem is admixture is solved to ask
Topic.
The present invention's is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, which is characterized in that should
The weight percent of each material is in additive：Cellulose ether is 20%-30%, starch ether 8%-10%, maltodextrin 10%-
15%, thixotropic lubricant 5%-10%, water-reducing agent 4%-8%, air entraining agent 3%-5%, redisperable polymer powder 10%-
20%, bentonite 20%-30%.
The cellulose ether is hydroxypropyl methyl cellulose ether.
The water-reducing agent is poly carboxylic acid series water reducer.
The air entraining agent is powder triterpenoid saponin air entraining agent.
The present invention it is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, be with cellulose ether,
Starch ether, maltodextrin, thixotropic lubricant, water-reducing agent, air entraining agent, redisperable polymer powder and bentonite mix system jointly
At.
The present invention's is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, has the following effects that：
1, the good water retention property of mortar mixture had both been provided using maltodextrin partial alternative cellulose ether, and had made mortar mix
Object is not easy to isolate bleeding, and can improve cellulose ether causes under low temperature environment mortar mixture setting time long to be asked in winter
Topic；
2, starch ether, thixotropic lubricant and air entraining agent are used in combination so that mortar mixture can also under higher apparent density
Ensure its plasticity, while reducing the viscosity of mortar mixture, increases the soft degree of mortar mixture, so as to improve mortar mix
The workability of object；
3, water-reducing agent is substantially reduced the water consumption of mortar mixture, and the pressure resistance of mortar is improved under the premise of meeting application property
Degree, redisperable polymer powder significantly improve mortar to the adhesive property of base material, flexibility and deformability, so as to improve
The problem of hollowing, cracking after mortar mortar hardening and surface dusting.
Specific implementation mode
Embodiment：It is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, according to following weight percent
Carry out dispensing：Cellulose ether is 25%, starch ether 7%, maltodextrin 13%, thixotropic lubricant 7%, water-reducing agent 6%, draws
Gas agent is 4%, bentonite 23%, redisperable polymer powder 15%.Agravic stir is added in certain sequence after being weighed according to proportioning
Stirring in machine is mixed, is stirred 20 minutes, blowing packaging is additive finished product.
Add the mortar ingredient percentage and main physical and chemical index such as following table of above-mentioned mortar additive：
。
The identical mortar mix ratio of experimental design, different construction environment temperature and admixture, 1# mortar construction environment temperature
Degree is 20 DEG C, agstone is admixture, and 2# mortar construction environment temperature is 15 DEG C, agstone is admixture, 3# mortars
Construction environment temperature is 10 DEG C, agstone is admixture, and 4# mortar construction environment temperature is 5 DEG C, agstone is blending
Material, 5# mortar construction environment temperature is 10 DEG C, agstone is admixture, and 6# mortar construction environment temperature is 10 DEG C, fine coal
Ash is admixture.By experiment, with the reduction of construction environment temperature, under the premise of ensureing mortar workability, mortar
Mechanical property decreases；In identical low-temperature construction environment temperature（10℃）Under, mix the mortar of additive of the present invention（3# sand
Slurry）Solidifying setting time, 14d tensile bond strengths and 28d compression strength to be substantially better than the mortar for mixing commercially available additive（5#
Mortar and 6# mortars）, to ensure that the application property of mortar at a temperature of low temperature environment, it is suppressed that hollowing after mortar hardening,
The problem of cracking and surface dusting.
Claims (4)
1. a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, it is characterised in that：It is each in the additive
The weight percent of material is：Cellulose ether is 20%-30%, starch ether 8%-10%, maltodextrin 10%-15%, thixotroping profit
Lubrication prescription is 5%-10%, water-reducing agent 4%-8%, air entraining agent 3%-5%, redisperable polymer powder 10%-20%, bentonite
For 20%-30%.
2. it is according to claim 1 a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, it is special
Sign is：The cellulose ether is hydroxypropyl methyl cellulose ether.
3. it is according to claim 1 a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, it is special
Sign is：The water-reducing agent is poly carboxylic acid series water reducer.
4. it is according to claim 1 a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture, it is special
Sign is：The air entraining agent is powder triterpenoid saponin air entraining agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810444084.6A CN108675676A (en) | 2018-05-10 | 2018-05-10 | It is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810444084.6A CN108675676A (en) | 2018-05-10 | 2018-05-10 | It is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108675676A true CN108675676A (en) | 2018-10-19 |
Family
ID=63805886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810444084.6A Pending CN108675676A (en) | 2018-05-10 | 2018-05-10 | It is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108675676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109574544A (en) * | 2019-01-23 | 2019-04-05 | 张家界万众新型建筑材料有限公司 | A kind of complex additive in common dry-mixed mortar |
| CN115784661A (en) * | 2022-11-15 | 2023-03-14 | 安徽中铁工程材料科技有限公司 | Preparation method of water-retaining limestone powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819159A (en) * | 2014-01-20 | 2014-05-28 | 同济大学 | Ground mortar using bentonite and dextrin as water-retention and thickening materials and using method thereof |
| CN104058626A (en) * | 2014-07-11 | 2014-09-24 | 北京博润佳科技有限公司 | Machine-made sand plastering mortar additive |
| CN107445537A (en) * | 2017-07-18 | 2017-12-08 | 辽宁煜梽新型建材有限公司 | A kind of dry-mixed mortar and preparation method thereof |
-
2018
- 2018-05-10 CN CN201810444084.6A patent/CN108675676A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819159A (en) * | 2014-01-20 | 2014-05-28 | 同济大学 | Ground mortar using bentonite and dextrin as water-retention and thickening materials and using method thereof |
| CN104058626A (en) * | 2014-07-11 | 2014-09-24 | 北京博润佳科技有限公司 | Machine-made sand plastering mortar additive |
| CN107445537A (en) * | 2017-07-18 | 2017-12-08 | 辽宁煜梽新型建材有限公司 | A kind of dry-mixed mortar and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109574544A (en) * | 2019-01-23 | 2019-04-05 | 张家界万众新型建筑材料有限公司 | A kind of complex additive in common dry-mixed mortar |
| CN115784661A (en) * | 2022-11-15 | 2023-03-14 | 安徽中铁工程材料科技有限公司 | Preparation method of water-retaining limestone powder |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181019 |
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