CN101269936B - Interface mortar - Google Patents
Interface mortar Download PDFInfo
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- CN101269936B CN101269936B CN2008100308623A CN200810030862A CN101269936B CN 101269936 B CN101269936 B CN 101269936B CN 2008100308623 A CN2008100308623 A CN 2008100308623A CN 200810030862 A CN200810030862 A CN 200810030862A CN 101269936 B CN101269936 B CN 101269936B
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- boundary mortar
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- fluorgypsum
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Abstract
The present invention discloses interface sand pulp, the constitutional materials of which comprises inorganic cementing compound, organic cementing compound tylose ether MC and hydrophobe redispersionable rubber powder, skeletal material and solidification setting accelerator; the ingredients with the following weight percent: 40 to 50 percent of inorganic cementing compound, 0.05 to 1.0 percent of tylose ether MC, 1.0 to 2.5 percent of hydrophobe redispersionable rubber powder, 48 to 60 percent of skeletal material, and 0 to 6 percent of solidification setting accelerator. The interface sand pulp of the present invention has strong adhesive strength, good water-resistant performance, small modulus and good climate-resistant performance, and is free from aging and is free from shrinking during the hardening, and has good flexibility, and is free from producing the interface stress. The interface sand pulp is particularly suitable to be used as the processing agent for the surface of the aeroconcrete and the smooth concrete, and is also applicable to be used as the transitional layer between the substrate and the coating layer, and can also be used for bonding the ceramic tile.
Description
Technical field
The present invention relates to the shrinkage-free boundary mortar of a kind of material of construction high strong water resistant, specifically, be a kind of can secure bond basic unit, and its surface can be used for the interface treating agent on interior wall, exterior wall and roof well by new tackiness agent secure bond.
Background technology
Brushing gypsum have with base material bonding firmly, do not shrink during sclerosis, characteristics such as easy construction, cost performance height, and obtain to use.But existing brushing gypsum intensity is low, water resistance is poor, particularly meet water or make moist, easily water-swelling, can shrink again when dry, make brushing gypsum bear shear-stress and act on repeatedly, usually cause interface debonding with bonding basic unit, brushing gypsum comes off, thereby traditional brushing gypsum can not be used as interfacial agents.
In addition, in construction work, because the base material difference, surface property is also different, and as gas concrete, gypsum polyporous materials, water-absorbent is strong; Onsite concrete class material, surface smoothing, water-absorbent is low; Atresia organic materialss such as PVC sheet material, benzene plate class do not absorb water; And because the cure shrinkage of back facing material easily produces internal stress, all of these factors taken together all causes bonding failure easily, and rendering layer comes off.Thereby, between base material and rendering layer, a transition layer should be arranged.This transition layer; be actually the architecture adhesion agent that have two-way avidity; it is big to have cohesive strength; good weatherability, not aging, good toughness; modulus is low; can eliminate the interfacial stress that expansion between base material and rendering layer or the tectum, contraction or distortion produce, thus make cover bonding firmly, reliably, do not ftracture, do not come off, thereby play the effect of protection base material.This present class architecture adhesion agent performance still can not be satisfactory.
Moreover when tiling, because base material and ceramic tile all are the materials of stable material quality, this just requires boundary mortar not shrink, or contraction is very little, avoids producing internal stress, makes bonding failure.Do not shrink when therefore, requiring boundary mortar to solidify or shrinkage value very little.
And the boundary mortar of widespread use at present mainly is to be the boundary mortar of tackiness agent with cement and rubber powder.Shrink big when the cement interface mortar solidifies.
Summary of the invention
The objective of the invention is to overcome and shrink big when existing cement interface mortar solidifies and organic adhesion agent defective such as easily wear out, provide a kind of cohesive strength big, water-tolerant, modulus is little, and good weatherability is not aging, do not shrink during sclerosis, good toughness can not produce the boundary mortar of interfacial stress.
The objective of the invention is to realize by following proposal:
The present invention's boundary mortar, its constituent materials comprises inorganic adhesive, organic adhesion agent methyl cellulose ether MC and hydrophobic type re-dispersible glue powder, aggregate solidifies setting accelerator; Each composition weight per distribution ratio is inorganic adhesive 40%～50%, methyl cellulose ether MC0.05-1.0% (preferred 0.2-0.4%), hydrophobic type re-dispersible glue powder 1.0%-2.5%, aggregate 48%-60%, curing setting accelerator 0～6%.
Described inorganic adhesive is for being selected from least three kinds blend in dihydrate gypsum, fluorgypsum, levigate blast furnace slag (hereinafter to be referred as " water-granulated slag "), the silicate cement, preferred version is the mixture of dihydrate gypsum, fluorgypsum, levigate water-granulated slag and silicate cement, and preferred scheme is that the weight ratio of described four kinds of mixtures is: dihydrate gypsum: fluorgypsum: water-granulated slag powder: silicate cement=32: 32: 27: 9; In case of necessity, also can add the lime of 2-4wt%.Described dihydrate gypsum can be with desulfurated plaster or ardealite instead, and described fluorgypsum can replace with anhydrite, to the requirement of dihydrate gypsum and fluorgypsum: contain free-water less than 0.5%, fineness 0.1mm, screen over-size is less than 5%.Silicate cement can replace with lime, or replaces with sulfate cement, or replaces with aluminate cement.
Described aggregate is a fine sand, as river sand, CaCO
3Powder.Can be the sand that existing mortar uses, the preferred 0.001～2.5mm of particle diameter.
Described curing setting accelerator is an alum, and according to the environment use temperature, as changing in spring, summer, autumn, winter, available alum is regulated set time, can mix the curing setting accelerator winter more, and can not mix summer.
Described hydrophobic type re-dispersible glue powder is general no special water-fast the requirement under the situation, and available common re-dispersible glue powder replaces.
Described setting accelerator alum can replace with vitriolate of tartar or sodium sulfate or semi-hydrated gypsum.
Production method: described each raw material is weighed by predetermined proportion, mix, packing.
Usage: add suitable quantity of water and stir, left standstill 5～10 minutes, then construction.
The present invention's boundary mortar cohesive strength is big, water-tolerant, and modulus is little, and good weatherability is not aging, does not shrink during sclerosis, and good toughness can not produce interfacial stress.Be particularly suitable for as gas concrete and slick concrete surface treatment agent.
The present invention's boundary mortar also is suitable for use as the transition layer between base material and the rendering layer, make whitewash cover bonding firmly, reliably, do not ftracture, do not come off, thereby play the protection base material effect; Also can be used for sticking brick, bonding firmly.
Embodiment
The invention will be further described below in conjunction with embodiment.
(1) inorganic adhesive and aggregate weight proportion are optimized embodiment
The weight proportion of raw material dihydrate gypsum, fluorgypsum, water-granulated slag powder, cement, MC, re-dispersible glue powder and sand is:
Dihydrate gypsum: fluorgypsum: water-granulated slag powder: cement: MC: re-dispersible glue powder: sand
1
#＝128∶128∶108∶36∶3.5∶10∶600
2
#＝144∶144∶121.5∶40.5∶3.5∶10∶550
3
#＝160∶160∶135∶45∶3.5∶10∶500
Wherein, 3
#Dihydrate gypsum replace with desulfurated plaster, described fluorgypsum replaces with anhydrite.
Take by weighing raw material by said ratio, add water and stir, water cement ratio=0.35; Use the 40*40*160mm mold forming, natural curing 28 days, oven dry, survey ultimate compression strength, bending strength, 72 hours coefficient of softening according to GB/T 17671-1999 standard " Test method for strength of hydraulic cement mortar (ISO method) ", according to the cohesive strength of JC/T 547-2005 standard test boundary mortar and cement matrix, drying shrinkage value, the anti-corrosion performance of soaking in 30 days, through 15 drying and watering cycles, loss of strength rate: carbonization intensity, through the mass loss rate and the loss of strength rate of 20 freeze-thaw cycle, experimental result is as follows:
Table 11
#2
#3
#Boundary mortar physical force performance test result
| Sample | Compressive strength MPa | Flexural strength MPa | Coefficient of softening | Cohesive strength MPa |
| 1 # | 30.0 | 4.0 | 0.85 | 0.80 |
| 2 # | 31.0 | 3.5 | 0.85 | 0.80 |
| 3 # | 35.0 | 3.0 | 0.86 | 0.60 |
Table 21
#2
#3
#Corrosion rate (%) experimental result of boundary mortar
1.1
#2
#3
#28 days ultimate compression strength of boundary mortar is greater than 30MPa, and flexural strength is greater than 3.0MPa, and drying shrinkage value is little, only is 1～2*10
-4
2. water resistance is good, and coefficient of softening is more than 0.85, full water intensity height;
3. through 15 drying and watering cycles, loss of strength is about 3%, and anti-drying and watering cycle changes can be strong;
4. be about 2.8% through 20 freeze-thaw cycle losss of strength, mass loss is about 0.16%, and frost resistance is preferably arranged.
5. other performance sees Table 1.
(2) hydrophobic type re-dispersible glue powder ratio optimization embodiment
Raw material hydrophobic type re-dispersible glue powder, dihydrate gypsum, fluorgypsum, water-granulated slag powder, cement, MC and sand weight proportion are:
Hydrophobic type re-dispersible glue powder: dihydrate gypsum: fluorgypsum: water-granulated slag powder: cement: MC: sand
4
#＝10∶144∶144∶121.5∶40.5∶3.5∶550
5
#＝15∶144∶144∶121.5∶40.5∶3.5∶550
6
#＝20∶144∶144∶121.5∶40.5∶3.5∶550
7
#＝25∶144∶144∶121.5∶40.5∶3.5∶550
Wherein 6
#Also be added with alum 3%; 7
#Also be added with 3% lime.
Take by weighing raw material by above-mentioned raw materials set of dispense ratio, add water and stir, water cement ratio=0.35: 1 is used the 40*40*160mm mold forming, and natural curing 28 days is by GB GB/T 17671-1999 prescriptive procedure test ultimate compression strength, bending strength, coefficient of softening; According to JC/T 547-2005 " ceramic wall tile tackiness agent " test cohesive strength, experimental result sees Table 2.
Table 2 hydrophobic type re-dispersible glue powder proportioning influences the boundary mortar mechanical property
| Sample | Compressive strength MPa | Flexural strength MPa | Coefficient of softening | Cohesive strength MPa |
| 4 # | 31.6 | 3.5 | 0.85 | 0.81 |
| 5 # | 31.2 | 3.7 | 0.84 | 0.90 |
| 6 # | 30.0 | 3.4 | 0.87 | 1.02 |
| 7 # | 30.9 | 3.8 | 0.86 | 1.20 |
(3) contain three component inorganic adhesive boundary mortar embodiment of fluorgypsum
Hydrophobic type re-dispersible glue powder, fluorgypsum, levigate water-granulated slag, cement, MC and sand weight proportion are:
Hydrophobic type re-dispersible glue powder: fluorgypsum: water-granulated slag powder: cement: MC: sand
8
#＝15∶288∶121.5∶40.5∶3.5∶550
9
#＝20∶258∶121.5∶40.5∶3.5∶580
Wherein 8
#, 9
#Add alum 2% and make setting accelerator.
Take by weighing starting material by above-mentioned formula rate, adding water stirs, water cement ratio=0.4: 1, with 40 * 40 * 160mm mould molding, natural curing 28 days, press the method test compression intensity, flexural strength, coefficient of softening of GB/T 17671-1999 regulation and according to JC/T 547-2005 standard test cohesive strength, The performance test results sees Table 3
| Sample | Compressive strength MPa | Flexural strength MPa | Coefficient of softening | Cohesive strength MPa |
| 8 # | 28.9 | 3.8 | 0.86 | 1.1 |
| 9 # | 31.2 | 3.9 | 0.85 | 1.3 |
Claims (8)
1. boundary mortar, its component comprises inorganic adhesive, organic adhesion agent methyl cellulose ether MC and hydrophobic type re-dispersible glue powder, aggregate, solidify setting accelerator, it is characterized in that each composition weight per distribution ratio is inorganic adhesive 40%～50%, methyl cellulose ether MC0.05-1.0%, re-dispersible glue powder 1.0%-2.5%, aggregate 48%-60% solidifies setting accelerator 0～6%; Described inorganic adhesive is at least three kinds the blend that is selected from dihydrate gypsum, fluorgypsum, levigate water-granulated slag, the silicate cement; Described aggregate is a fine sand; Described curing setting accelerator is an alum.
2. boundary mortar according to claim 1 is characterized in that, the weight percent proportioning of described methyl cellulose ether MC is 0.2-0.4%.
3. boundary mortar according to claim 1 and 2 is characterized in that, described inorganic adhesive is the blend of dihydrate gypsum, fluorgypsum, water-granulated slag powder, silicate cement.
4. boundary mortar according to claim 3 is characterized in that, the weight proportion of described dihydrate gypsum, fluorgypsum, levigate water-granulated slag, silicate cement is: dihydrate gypsum: fluorgypsum: the water-granulated slag powder: silicate cement=32: 32: 27: 9.
5. boundary mortar according to claim 1 and 2 is characterized in that, also is added with the lime of 2-4wt%.
6. boundary mortar according to claim 1 and 2 is characterized in that, described dihydrate gypsum replaces or ardealite instead with desulfurated plaster.
7. boundary mortar according to claim 1 and 2 is characterized in that described fluorgypsum replaces with anhydrite.
8. boundary mortar according to claim 1 and 2 is characterized in that described silicate cement replaces with lime.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100308623A CN101269936B (en) | 2008-03-21 | 2008-03-21 | Interface mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100308623A CN101269936B (en) | 2008-03-21 | 2008-03-21 | Interface mortar |
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| Publication Number | Publication Date |
|---|---|
| CN101269936A CN101269936A (en) | 2008-09-24 |
| CN101269936B true CN101269936B (en) | 2010-12-22 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267805A (en) * | 2010-06-07 | 2011-12-07 | 中冶建筑研究总院有限公司 | Interface processing agent for cement-based wear resistant material construction |
| CN103242011B (en) * | 2013-05-16 | 2015-01-28 | 河北科技大学 | High-performance cement-based adhesive for tiles |
| CN103242021B (en) * | 2013-05-30 | 2015-12-23 | 长沙归一建材科技有限公司 | A kind of Gypsum-cement heat insulation masonry mortar |
| CN103242020B (en) * | 2013-05-30 | 2015-12-23 | 长沙归一建材科技有限公司 | A kind of gypsum-cement machine spray powder mortar and constructional method thereof |
| CN106007609A (en) * | 2016-05-10 | 2016-10-12 | 马振义 | Flue gas desulfurization gypsum and fluorgypsum compounded machine-spraying thermal insulation mortar |
| CN106045449A (en) * | 2016-05-10 | 2016-10-26 | 马振义 | Dihydrate gypsum based fireproof coating material |
| CN106866039A (en) * | 2017-04-17 | 2017-06-20 | 山东博宏建材科技有限公司 | A kind of gypsum base ceramic tile bond |
| CN108609962B (en) * | 2018-06-14 | 2021-07-02 | 杭萧钢构股份有限公司 | Interface mortar with epoxy coating for steel structure inner wall |
| CN108751844B (en) * | 2018-06-14 | 2021-07-02 | 杭萧钢构股份有限公司 | Interface agent with anticorrosive coating for steel structure inner wall |
| CN109020370B (en) * | 2018-08-14 | 2021-06-15 | 杭萧钢构股份有限公司 | Interface mortar with anticorrosive coating for steel structure exterior wall |
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