CN103819159A - Ground mortar using bentonite and dextrin as water-retention and thickening materials and using method thereof - Google Patents
Ground mortar using bentonite and dextrin as water-retention and thickening materials and using method thereof Download PDFInfo
- Publication number
- CN103819159A CN103819159A CN201410023626.4A CN201410023626A CN103819159A CN 103819159 A CN103819159 A CN 103819159A CN 201410023626 A CN201410023626 A CN 201410023626A CN 103819159 A CN103819159 A CN 103819159A
- Authority
- CN
- China
- Prior art keywords
- water
- mortar
- dextrin
- wilkinite
- thickening material
- 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.)
- Granted
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the technical field of building materials and particularly relates to ground mortar using bentonite and dextrin as water-retention and thickening materials and a using method thereof. The ground mortar consists of common silicate cement, river sand, slag powder, coal ash, the bentonite, the dextrin, a water reducing agent, a mortar plasticizer and a defoaming agent. The ground mortar not only has excellent construction performance, but also has the advantages of low cost, high bonding strength, good freezing resistance, low shrinkage and the like. The ground mortar is environmental-friendly and energy-saving; the doped water-retention and thickening materials are prepared by using the inorganic mineral bentonite with a large reserve volume as the main raw material; the materials are easy to take; the ground mortar is low in production cost and has high economic benefits and social benefits.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of ground mortar and using method thereof take wilkinite and dextrin as water-keeping thickening material.
Background technology
Ground mortar is to smear certain thickness mortar at the indoor and outdoor Horizon of buildings, has certain ultimate compression strength and cohesive strength after sclerosis, the effect that can ground be played protection and be modified.Ground mortar directly overlays on earth construction, is directly bonded together with earth construction, and thickness is generally at 5-30mm.
Because ground mortar has higher requirement to water-retentivity, delamination degree and mobility in the time applying, in later stage use procedure, ultimate compression strength and weather resistance are also had higher requirements, institute thinks and makes mortar have good work and use properties, and in the mortar of ground, kind and the used in amounts of the admixture such as the water-keeping thickening material of admixture will strictly be controlled.
At present common mortar water-keeping thickening material can be divided into inorganic mineral class and organic polymer class on the market.Organic polymer class water-keeping thickening material mixes after mortar the effect of being greatly improved of the serviceability of mortar, but the production cost of polymer series products is very high, can bring a lot of bubbles into mortar matrix after mixing mortar, significantly reduces the intensity of mortar.Inorganic mineral class water-keeping thickening material can not have a negative impact to mortar strength after mixing mortar, suitable mix ratio also may have effect of optimization to mortar strength, inorganic mineral series products mostly is natural mineral simultaneously, production cost is lower, it is obvious that but the effect of its water-keeping thickening is not so good as organic polymer class, and this is also limiting further developing of inorganic mineral class water-keeping thickening material.Because conventional on the market water-keeping thickening material all exists obvious relative merits, the Application and Development to floor sand slurry and further develop and produce good effect so the water-keeping thickening material of taking organic and inorganic Material cladding to form is bound to.
Bentonitic essential mineral consists of montmorillonite, and the special crystalline structure of montmorillonite is made up of two-layer silicon-oxy tetrahedron wafer therebetween one deck alumina octahedral wafer.Due to this special crystalline structure of montmorillonite, make it have the character such as cationic exchange, swelling property, cohesiveness, colloidality, same wilkinite also has above character.Wilkinite is mixing after mortar, can improve the water retention property of mortar, reduces the delamination degree of mortar, the intensity of mortar is not had a negative impact simultaneously.
Dextrin is amylolytic intermediate product, and its chemical molecular formula is identical with starch is all (C
6h
10o
5)
n, be mainly divided into yellow starch gum and the large class of white dextrin two, there is the features such as viscosity is large, thickening property is strong, solvability is good, instantly-soluble is good, carrier is good.Dextrin at present main purposes is to make sizing agent to use, and in mortar, is used in combination with organic fluidizer, can effectively improve the serviceability of mortar, increases the denseness of mortar, improves the water retention of mortar, improves the excreting water phenomenon of mortar.
Summary of the invention
The object of the invention is the water-keeping thickening material that utilizes natural mineral wilkinite and dextrin to be composited, provide a kind of with low cost, serviceability, mechanical property and excellent in durability, ground mortar and the using method thereof take wilkinite and dextrin as water-keeping thickening material of the little and environmental protection and energy saving of shrinking percentage.
The present invention propose take wilkinite and dextrin as the ground mortar of water-keeping thickening material, formed by ordinary Portland cement, river sand, slag powders, flyash, wilkinite, dextrin, water reducer, mortar plasticizer and defoamer, the weight ratio of each component is:
Ordinary Portland cement 100
River sand 250-600
Slag powders 10-30
Flyash 10-30
Wilkinite 10-15
Dextrin 0.05-0.50
Water reducer 0.05-2.00
Mortar plasticizer 0.1-0.3
Defoamer 0.06-0.60.
Each component preferably weight ratio is:
Ordinary Portland cement 100
River sand 300-550
Slag powders 10-25
Flyash 10-25
Wilkinite 10-15
Dextrin 0.05-0.50
Water reducer 0.05-1.50
Mortar plasticizer 0.1-0.2
Defoamer 0.08-0.60.
In the present invention, described ordinary Portland cement is 42.5 grades of ordinary Portland cements.
In the present invention, described river sand is medium sand, and fineness modulus is 2.5-3.0, and tap density is (1450-1650) Kg/m
3.
In the present invention, described slag powders is the one in S95 slag powders or S105 slag powders.
In the present invention, described flyash is
level high-calcium fly ass, its free calcium oxide mass percent is less than and equals 3.0%, and loss on ignition is less than and equals 5.0%.
In the present invention, described wilkinite is calcium-base bentonite, and fineness is 300 orders, and MgO massfraction is 0.20%-0.80%, Al
2o
3massfraction is 10.0%-18.0%, SiO
2massfraction is 50%-65%, SO
3massfraction is 0.1%-0.3%, K
2o massfraction is 1%-3%, and CaO massfraction is 0.1%-0.5%, TiO
2massfraction is 0.5%-1%, and MnO massfraction is 0.02%-0.05%, F
2o
3massfraction is 5%-7%.
In the present invention, described dextrin is maltodextrin, is white or micro-amorphous powder with light yellow shade.
In the present invention, described water reducer is the one in naphthalene water reducer or poly carboxylic acid series water reducer.
In the present invention, described mortar plasticizer is sodium lauryl sulphate and the cellulosic mixing powder of thickening material, and sodium lauryl sulphate massfraction is 60%-80%, and thickening material Mierocrystalline cellulose quality mark is 20%-40%.
In the present invention, described defoamer is silicone antifoam agent.
The preparation method take wilkinite and dextrin as the ground mortar of water-keeping thickening material that the present invention proposes, concrete steps are as follows:
Take ordinary Portland cement, river sand, slag powders, flyash, wilkinite, dextrin, water reducer, mortar plasticizer and defoamer by aforementioned part by weight, by mechanical stirring evenly after, obtain desired product.
A kind of using method take wilkinite and dextrin as the ground mortar of water-keeping thickening material that the present invention proposes, concrete steps are as follows: accurately take ground mortar and water take wilkinite and dextrin as water-keeping thickening material, first water is added to stirrer, along with blade of stirrer rotates, will at the uniform velocity drop into stirrer take wilkinite and dextrin as the ground mortar of water-keeping thickening material.After stirring, can construct.Amount of water is the 12%-20% of material weight of the present invention.
In the present invention, ordinary Portland cement, flyash and slag powders composition plural gel system, wherein ordinary Portland cement is main bonding component.What flyash used is one-level high-calcium fly ass, and its calcium oxide composition is higher, has a certain amount of hydraulicity crystal mineral, contain again lateral reactivity material simultaneously, in mortar, there is certain water-reducing effect, and can accelerate the development of mortar early strength, improve the anti-permeability performance of mortar.Slag powders activity is higher, and cement that can equivalent substitution 30%-40% in mortar, can obviously reduce hydration heat while use in mortar, improves the pore structure of mortar, improves the impervious anti-freezing property of mortar.Flyash and slag powders combined addition, to the bonding component that makees ground mortar in ordinary Portland cement, are given full play to the advantage of each bonding component, improve mechanical property and the endurance quality of ground mortar.
In the present invention, wilkinite and dextrin are the water-keeping thickening material of ground mortar.What wilkinite adopted is calcium-base bentonite, its low price, and reserves are huge, play the effect of water-keeping thickening in the mortar of ground by physisorption, improve the serviceability of mortar.There is the features such as cohesiveness, plasticity-and oilness due to wilkinite itself, so wilkinite not only can improve the serviceability of mortar in mortar, can also make moderate progress to mortar strength.The feature such as that dextrin has is cheap, solvability good, thickening property is strong, is incorporated into the effect that can have to mortar water-keeping thickening in mortar, improves the serviceability of mortar.Adopt wilkinite and the dextrin combined addition water-keeping thickening material as ground mortar, both reduced the production cost of mortar, improved the serviceability of mortar, can also the intensity of floor sand slurry not caused to heavy losses simultaneously.
In the present invention, adding of water reducer makes slurry have higher mobility and stability.
In the present invention, mortar plasticizer adhesive property is good, has good latherability in mortar, and microvesicle spacing is little, and stability is good, can significantly improve the serviceability of mortar and the cohesive strength of mortar.Meanwhile, in mortar, can disperse cement granules, promote aquation, contribute to improve mechanical property and the endurance quality of mortar.
In the present invention, defoamer add the air content that can reduce fresh mortar.
The present invention a kind ofly has workability excellent take wilkinite and dextrin as the ground mortar of water-keeping thickening material, with low cost, mechanical property good, endurance quality is high, shrinking percentage is little and the advantage such as environmental protection and energy saving.The water-keeping thickening material of admixture of the present invention is to utilize inorganic mineral wilkinite that reserves are huge to be prepared from for main raw material, and production cost is low, is convenient to draw materials, and makes mortar have good economic benefit and social benefit.
Ground mortar prepared by the present invention is using ordinary Portland cement, flyash and slag powders as consolidating material, using river sand as fine aggregate, using wilkinite and dextrin as water-keeping thickening material and add water reducer, mortar plasticizer and defoamer to be prepared from as improving plaster workability admixture.It has good workability, has that higher mechanical strength, shrinking percentage are low, an excellent in durability and the advantage such as reduce costs simultaneously.
Embodiment
Further illustrate the present invention below by embodiment.
Embodiment 1, a ground mortar take wilkinite and dextrin as water-keeping thickening material, formulated by the weight ratio of ordinary Portland cement 100, river sand 250, S95 slag powders 10, flyash 10, wilkinite 10, dextrin 0.05, poly carboxylic acid series water reducer 0.05, mortar plasticizer 0.1, defoamer 0.06.Add water and stir by 12% of mortar gross weight, obtain desired product.The performance test results is in table 1.
Embodiment 2, a ground mortar take wilkinite and dextrin as water-keeping thickening material, formulated by the weight ratio of ordinary Portland cement 100, river sand 333, S105 slag powders 15, flyash 18, wilkinite 12, dextrin 0.10, poly carboxylic acid series water reducer 0.10, mortar plasticizer 0.15, defoamer 0.10.Add water and stir by 14% of mortar gross weight, obtain desired product.The performance test results is in table 1.
Embodiment 3, a ground mortar take wilkinite and dextrin as water-keeping thickening material, formulated by the weight ratio of ordinary Portland cement 100, river sand 450, S95 slag powders 25, flyash 25, wilkinite 15, dextrin 0.40, naphthalene water reducer 1.50, mortar plasticizer 0.2, defoamer 0.40.Add water and stir by 16% of mortar gross weight, obtain desired product.The performance test results is in table 1.
Embodiment 4, a ground mortar take wilkinite and dextrin as water-keeping thickening material, formulated by the weight ratio of ordinary Portland cement 100, river sand 600, S105 slag powders 30, flyash 30, wilkinite 15, dextrin 0.50, naphthalene water reducer 2.00, mortar plasticizer 0.3, defoamer 0.60.Add water and stir by 20% of mortar gross weight, obtain desired product.The performance test results is in table 1.
table 1 embodiment the performance test results
Claims (11)
1. take wilkinite and dextrin as a ground mortar for water-keeping thickening material, it is characterized in that being made up of ordinary Portland cement, river sand, slag powders, flyash, wilkinite, dextrin, water reducer, mortar plasticizer and defoamer, the weight ratio of each component is:
Ordinary Portland cement 100
River sand 250-600
Slag powders 10-30
Flyash 10-30
Wilkinite 10-15
Dextrin 0.05-0.50
Water reducer 0.05-2.00
Mortar plasticizer 0.1-0.3
Defoamer 0.06-0.60.
2. according to claim 1 a kind of take wilkinite and dextrin as the ground mortar of water-keeping thickening material, it is characterized in that the weight ratio of each component is:
Ordinary Portland cement 100
River sand 300-550
Slag powders 10-25
Flyash 10-25
Wilkinite 10-15
Dextrin 0.05-0.50
Water reducer 0.05-1.50
Mortar plasticizer 0.1-0.2
Defoamer 0.08-0.60.
3. according to claim 1 a kind of take wilkinite and dextrin as the ground mortar of water-keeping thickening material, it is characterized in that described ordinary Portland cement is 42.5 grades of ordinary Portland cements.
4. according to claim 1ly a kind ofly it is characterized in that take wilkinite and dextrin as the ground mortar of water-keeping thickening material described river sand is medium sand, fineness modulus is 2.5-3.0, and tap density is (1450-1650) Kg/m
3.
5. according to claim 1 a kind of take wilkinite and dextrin as the ground mortar of water-keeping thickening material, it is characterized in that described slag powders is the one in S95 slag powders or S105 slag powders; Described flyash is
level high-calcium fly ass, its free calcium oxide mass percent is less than and equals 3.0%, and loss on ignition is less than and equals 5.0%.
6. according to claim 1ly a kind ofly it is characterized in that take wilkinite and dextrin as the ground mortar of water-keeping thickening material described wilkinite is calcium-base bentonite, fineness is 300 orders, and MgO massfraction is 0.20%-0.80%, Al
2o
3massfraction is 10.0%-18.0%, SiO
2massfraction is 50%-65%, SO
3massfraction is 0.1%-0.3%, K
2o massfraction is 1%-3%, and CaO massfraction is 0.1%-0.5%, TiO
2massfraction is 0.5%-1%, and MnO massfraction is 0.02%-0.05%, F
2o
3massfraction is 5%-7%.
7. according to claim 1ly a kind ofly it is characterized in that take wilkinite and dextrin as the ground mortar of water-keeping thickening material described dextrin is maltodextrin, is white or micro-amorphous powder with light yellow shade.
8. according to claim 1 a kind of take wilkinite and dextrin as the ground mortar of water-keeping thickening material, it is characterized in that described water reducer is the one in naphthalene water reducer or poly carboxylic acid series water reducer.
9. a kind of ground mortar take wilkinite and dextrin as water-keeping thickening material according to claim 1, it is characterized in that described mortar plasticizer is sodium lauryl sulphate and the cellulosic mixing powder of thickening material, sodium lauryl sulphate massfraction is 60%-80%, and thickening material Mierocrystalline cellulose quality mark is 20%-40%.
10. according to claim 1 a kind of take wilkinite and dextrin as the ground mortar of water-keeping thickening material, it is characterized in that described defoamer is silicone antifoam agent.
11. 1 kinds of a kind of using method take wilkinite and dextrin as the ground mortar of water-keeping thickening material as claimed in claim 1, while it is characterized in that using, amount of water is ground mortar total mass 12%-20%, mechanical stirring can be constructed after evenly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410023626.4A CN103819159B (en) | 2014-01-20 | 2014-01-20 | A kind of with wilkinite and dextrin be water-keeping thickening material ground mortar and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410023626.4A CN103819159B (en) | 2014-01-20 | 2014-01-20 | A kind of with wilkinite and dextrin be water-keeping thickening material ground mortar and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103819159A true CN103819159A (en) | 2014-05-28 |
| CN103819159B CN103819159B (en) | 2015-11-04 |
Family
ID=50754499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410023626.4A Expired - Fee Related CN103819159B (en) | 2014-01-20 | 2014-01-20 | A kind of with wilkinite and dextrin be water-keeping thickening material ground mortar and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103819159B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675676A (en) * | 2018-05-10 | 2018-10-19 | 江西省建筑材料工业科学研究设计院 | It is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture |
| CN108744854A (en) * | 2018-06-28 | 2018-11-06 | 德清方芳环保科技有限公司 | A kind of air purifying preparation and its preparation method and application |
| CN111087193A (en) * | 2019-12-27 | 2020-05-01 | 杭州斯曼特建材科技有限公司 | Dry-mixed mortar thickening agent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103086671A (en) * | 2013-01-30 | 2013-05-08 | 上海宝田新型建材有限公司 | Building structure reinforcing mortar |
| CN103449838A (en) * | 2013-08-28 | 2013-12-18 | 同济大学 | Foamed cement board taking foamed cement board leftovers as regenerated aggregates |
-
2014
- 2014-01-20 CN CN201410023626.4A patent/CN103819159B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103086671A (en) * | 2013-01-30 | 2013-05-08 | 上海宝田新型建材有限公司 | Building structure reinforcing mortar |
| CN103449838A (en) * | 2013-08-28 | 2013-12-18 | 同济大学 | Foamed cement board taking foamed cement board leftovers as regenerated aggregates |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675676A (en) * | 2018-05-10 | 2018-10-19 | 江西省建筑材料工业科学研究设计院 | It is a kind of using agstone as the winter low temperature additives for Dry-Mixed Mortar of admixture |
| CN108744854A (en) * | 2018-06-28 | 2018-11-06 | 德清方芳环保科技有限公司 | A kind of air purifying preparation and its preparation method and application |
| CN108744854B (en) * | 2018-06-28 | 2021-09-07 | 德清方芳环保科技有限公司 | Air purifying agent and preparation method and application thereof |
| CN111087193A (en) * | 2019-12-27 | 2020-05-01 | 杭州斯曼特建材科技有限公司 | Dry-mixed mortar thickening agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103819159B (en) | 2015-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103524091B (en) | The non-evaporating preparation method supporting ultralight foamed concrete of flyash in great mixed amount | |
| CN102167547B (en) | Cementitious capillary crystalline waterproof material capable of quickly repairing cracks | |
| CN102701679B (en) | Antifreeze ready mixed mortar and preparation method thereof | |
| CN103979901B (en) | A kind of cement based shrinking-free grouting material and using method being mixed with phosphorus slag powder | |
| CN103803918A (en) | Porcelain powder waste mixed cement-based tiny-expansion crack repairing mortar and using method thereof | |
| CN100475733C (en) | Adhesive, heat insulating and sound isolating material with the adhesive and preparing process thereof | |
| CN100345791C (en) | Heat insulating glue powder material for wall and its prepn and usage | |
| CN102690092B (en) | Low-temperature rice hull ash doped cement-base shrinkage-free grouting material and using method thereof | |
| CN103058619B (en) | Mineral powder-doped polymer waterproof mortar and using method thereof | |
| CN103193425B (en) | High strength pumping anti-crack concrete prepared by slag aggregate and production method thereof | |
| CN103723970B (en) | A kind of with wilkinite and polyacrylamide be water-keeping thickening material motar and using method thereof | |
| CN106365556A (en) | Anti-permeability anti-corrosion concrete | |
| CN110304872B (en) | Nano modified cement-based underwater non-dispersible material and preparation method thereof | |
| CN101723639A (en) | Novel heat-insulation dry powder mortar | |
| KR101122038B1 (en) | Ultra light aerated concrete composition and method of wall using the same | |
| CN102199025A (en) | Structure reinforcing material taking steel slag as aggregate | |
| CN103693888A (en) | Water retaining thickener taking bentonite as main raw material and preparation method | |
| CN103553450B (en) | A kind of lightweight self-compacting concrete and preparation method thereof | |
| CN107140915A (en) | A kind of light heat-resisting tailings hollow brick and its preparation | |
| CN101265390A (en) | Multifunctional drying powder thermal insulation paint | |
| CN103693924B (en) | A kind of dry-mixed plastering mortar and using method thereof being mixed with Bayer process red mud | |
| CN104803644A (en) | Plastering mortar with kieselguhr and polyacrylamide serving as water-retaining agents and usage method of plastering mortar | |
| CN103819159B (en) | A kind of with wilkinite and dextrin be water-keeping thickening material ground mortar and using method thereof | |
| CN102153311B (en) | Compound type thickening agent applicable to common wet-mixed mortar | |
| CN108164207A (en) | A kind of new concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20180120 |