CN109851285A - A kind of galapectite-silicon dioxide composite aerogel mortar and preparation method thereof - Google Patents
A kind of galapectite-silicon dioxide composite aerogel mortar and preparation method thereof Download PDFInfo
- Publication number
- CN109851285A CN109851285A CN201711237519.1A CN201711237519A CN109851285A CN 109851285 A CN109851285 A CN 109851285A CN 201711237519 A CN201711237519 A CN 201711237519A CN 109851285 A CN109851285 A CN 109851285A
- Authority
- CN
- China
- Prior art keywords
- galapectite
- silicon dioxide
- composite aerogel
- dioxide composite
- mortar
- 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.)
- Withdrawn
Links
Landscapes
- Silicon Compounds (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of galapectite-silicon dioxide composite aerogel mortars, including cementitious material, water, sand, galapectite/silicon dioxide composite aerogel, rubber powder, cellulose, staple fiber, water-reducing agent and air entraining agent, mass ratio is cementitious material: water: sand: galapectite/silicon dioxide composite aerogel: rubber powder: cellulose: staple fiber: water-reducing agent: air entraining agent=100:40:(100~300): (5~1): 1:1:(2~1): (2~1): (0.2~0.1).The density for considerably reducing mortar improves the thermal insulation property of mortar while keeping good mechanical strength.
Description
Technical field
The present invention relates to composite material mortar technical fields, more particularly to a kind of compound airsetting of galapectite-silica
Glue mortar and preparation method thereof.
Background technique
Aeroge is a kind of nano-meter porous amorphous solid-state material of novel light, is situated between usually in hole full of gaseous state dispersion
Matter, porosity have extremely low density and very superior thermal insulation property up to 98%.With going deep into for research, airsetting
The cost of manufacture of glue is constantly reducing, and starts to enter civil field from leading-edge fields such as space flight, in building heat preservation heat-barrier material side
There have been certain applications in face.
Mortar is a kind of very important construction material in construction projects, is pressed by inorganic coagulation material and fine aggregate and water
Ratio is mixed and stirred, and according to for difference, is broadly divided into masonry mortar and decorative mortar.With China's Modernized City Construction into
The quickening of journey, construction scope are presented blowout and increase, and mortar becomes very huge at the same time, but existing mortar now
Big, poor water resistance that there are density mostly, the low feature of thermal insulation property, these features are obviously all unfavorable for reducing building energy consumption and section
The national development strategy of energy emission reduction.
Summary of the invention
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide a kind of galapectite-silica
Composite aerogel mortar.
The technical solution adopted to achieve the purpose of the present invention is:
A kind of galapectite-silicon dioxide composite aerogel mortar, including cementitious material, water, sand, galapectite/titanium dioxide
Silicon compound aerogel, rubber powder, cellulose, staple fiber, water-reducing agent and air entraining agent, mass ratio are cementitious material: water: sand: angstrom
Lip river stone/silicon dioxide composite aerogel: rubber powder: cellulose: staple fiber: water-reducing agent: air entraining agent=100:40:(100~300):
(5~1): 1:1:(2~1): (2~1): (0.2~0.1).
Preferably, the staple fiber is polypropylene fibre, and the water-reducing agent is polycarboxylate water-reducer.
Preferably, the cementitious material, water, sand: galapectite/silicon dioxide composite aerogel mass ratio is 100:
40:(200~300): when (2.5~1), it can get mechanical property and the preferable mortar of thermal and insulating performance.
Preferably, the cementitious material be cement, flyash and SILICA FUME, cement, flyash, SILICA FUME mass ratio be
(60-40):(40-30):(5-10)。
Preferably, the SILICA FUME is neutral SILICA FUME, and it includes subordinate's components of mass percent meter: silica
95.8%, aluminum oxide 1.0%, di-iron trioxide 0.9%, magnesia 0.7%, calcium oxide 0.3% and sodium oxide molybdena 1.3%.
Another aspect of the present invention, the galapectite-silicon dioxide composite aerogel mortar preparation method, including it is following
Step:
Step 1, first blocky galapectite-silicon dioxide composite aerogel be sieved after being crushed, be configured to fineness modulus
Fine aggregate between 2.3-3.0 obtains galapectite-silicon dioxide composite aerogel particle.
Step 2, be added water-reducing agent, air entraining agent in total water consumption, dosage be respectively cementitious material quality 1~2%,
0.1~0.2%, it stirs evenly；
Step 3, dry mixing in blender is added in cementitious material, sand, rubber powder, staple fiber, cellulose.
Step 4, solution configured in step 2 is added in the material being uniformly mixed obtained in step 3, low speed stirs
Mix 60-200s, high-speed stirred 60-200s；
Step 5,60-200s is stirred at low speed to the slurry stirred evenly in step 4 again, in whipping process, is slowly fallen
Enter configured composite aerogel particle in step 1.
Preferably, step 3 middle short fiber is polypropylene fibre, and the water-reducing agent is polycarboxylate water-reducer.
Preferably, cementitious material in the step 3, sand, rubber powder, staple fiber, cellulose mass ratio be 100:(100
~300): 1:1:(2~1).
Preferably, cementitious material is cement, flyash and SILICA FUME in the step 3, in which: cement, flyash, micro- silicon
The mass ratio of powder is (60-40): (40-30): (5-10).
Aeroge is a kind of novel light nano-porous materials, is inhaled with extremely low density and very superior insulation
Can, intensity is lower, although reducing the thermal coefficient of mortar after being added to mortar, also bring mortar mechanical property and and easily
Property reduce the problem of.Therefore, using the higher galapectite/silicon dioxide composite aerogel of intensity as raw material in technical solution of the present invention
Mortar is made with the stirring of cementitious material, sand, water and other additives, the density and thermal coefficient of mortar can be greatly lowered,
Keep mechanical property in usable range simultaneously.
Have in invention before using pure SiO2Aeroge, which is added in mortar, is used to improve the thermal insulation property of mortar, but by
Smaller in used aeroge density, hydrophobicity is stronger, and aeroge is easy to produce in whipping process waves winged, aeroge itself
Intensity it is not high and mix after system water requirement increase cause intensity lower, in technical solution of the present invention use galapectite/titanium dioxide
Silicon compound aerogel, galapectite/silicon dioxide composite aerogel for using, galapectite and SiO in the present invention2Aerogel particle it
Between there are bridge effects, when aeroge is by external force, this effect can hinder the sliding of nanoparticle, fall off and collapse
Collapse, meanwhile, crackle further expands when the galapectite of fibrous structure can prevent aeroge from destroying, furthermore when galapectite from
Aeroge matrix can consume certain energy when extracting, so that the mechanical performance of composite aerogel is improved, compared to powdered
Pure SiO2 aeroge, addition of the blocky high-strength compound aeroge in mortar, mechanical property, which has, to be obviously improved.Furthermore, while gas
Integrally hydrophobicity is still presented in gel, but wherein contains a kind of silicate mineral galapectite, have to cement base it is certain friendliness,
This at hydrophobic aerogels and cementitious material matrix interface for being combined untight problem to have certain improvement result.
Compared with prior art, the beneficial effects of the present invention are:
1, galapectite proposed by the present invention/silicon dioxide composite aerogel mortar by cement, flyash, SILICA FUME, sand,
Water, composite aerogel, rubber powder, cellulose, staple fiber, water-reducing agent, air entraining agent are made with specific proportion, considerably reduce sand
The density of slurry improves the thermal insulation property of mortar while keeping good mechanical strength.
2, improve heat preservation, the water conservation of mortar in mortar of the present invention by addition rubber powder, cellulose, water-reducing agent, air entraining agent
Performance.
3, the aeroge in mortar of the present invention uses galapectite/silicon dioxide composite aerogel, compared to aerogel powder,
Mortar strength rises, while reducing aeroge and waving winged loss.Bring in mortar is added to for aerogel powder to flow
Property decline, water requirement increase the case where, the present invention also has clear improvement.
4, composite aerogel method for preparing mortar of the present invention carries out at normal temperatures and pressures, does not need large scale equipment, technique
Simply, low in cost.
Detailed description of the invention
Fig. 1 is the variable density curve of the mortar of embodiment 1-8 preparation；
Fig. 2 is the mechanical property change curve of the mortar of embodiment 1-8 preparation；
Fig. 3 is the thermal coefficient change curve of the mortar of embodiment 1-8 preparation；
Fig. 4 is the composite aerogel of embodiment 1-8 preparation and the SEM image of cement base.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
Following embodiment is raw materials used and purchase source is as follows:
Cement, the ordinary portland cement of Jidong Cement Co., Ltd., Tangshan's production, 42.5 grades of P.O；Flyash,
Hebei Lingshou County mineral products company, state of Yan level-one flyash；Silicon powder, Hebei Lingshou County Yuan Jiang mineral products Co., Ltd；Sand, tall building
The iso standard of Men Aisiou normal sand Co., Ltd production is husky；Rubber powder comes from Tianjin Dong Shengguang construction material Co., Ltd；It is fine
Dimension element, Beijing Chemical Co., Ltd., Hua Weirui section；Water-reducing agent, the JM-2 mark of Tianjin flying dragon concrete additive limited liability company production
Pseudotype polycarboxylate water-reducer, diminishing amount are 18%-28%；Air entraining agent, it is raw using Tianjin flying dragon concrete additive limited liability company
The JFL-7 air entraining agent of production；12mm polypropylene fibre is produced by Xu Bo thermal insulation material factory, Langfang in Hebei Province.
Wherein galapectite/silicon dioxide composite aerogel preparation method is detailed in that application No. is in 2016107792335
State's patent " a kind of natural halloysite clay aeroge and preparation method thereof for building heat preservation ".
The main performance index of the galapectite/silicon dioxide composite aerogel is as shown in table 1.
Table 1
Comparative example
With cement 260g, flyash 120g, SILICA FUME 20g, sand 1200g, water 160g, rubber powder 4g, cellulose 4g, short fibre
4g is tieed up, water-reducing agent 4g, air entraining agent 0.4g are that the mortar of raw material preparation is comparative example, and wherein water-reducing agent is polycarboxylate water-reducer, short
Fiber is polypropylene fibre.
Embodiment 1-8,
Water-cement ratio is set as 0.40；Cementitious material and the quality of sand are 1:3 than initial value；Flyash and SILICA FUME difference
Account for the 30wt% of cementitious material, 5wt%；Rubber powder, cellulose, staple fiber, water-reducing agent, air entraining agent are respectively cementitious material quality point
Several 1%, 1%, 1%, 1%, 0.1%.
With cement 260g, flyash 120g, SILICA FUME 20g, sand 1200g, water 160g, rubber powder 4g, cellulose 4g, short fibre
4g is tieed up, water-reducing agent 4g, air entraining agent 0.4g are raw material, and according to following ratio galapectite/silicon dioxide composite aerogel particle
Sand is replaced in equal volume: 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%.Wherein galapectite/dioxy
The density of SiClx composite aerogel particle is 120kgm-3, the density of sand is 1400kgm-3。
The composite aerogel method for preparing mortar of Examples 1 to 8 is as follows:
1) blocky galapectite/silicon dioxide composite aerogel is made using normal temperature and pressure seasoning, is sieved, selects after broken
The aerogel particle of different-grain diameter adds up to tail over rate shared by each partial size and is respectively as follows: 4.75mm, and 10~0；2.36mm, 35~5；
1.18mm, 65~35；600um, 85~71；300um, 95~80；150um, 100~90.By the gradation of composite aerogel particle
Control controls between 2.3-3.0 in 2nd area, fineness modulus, satisfactory aerogel particle is retained spare；
2) water-reducing agent, air entraining agent are added in gross water requirement, it is spare to stir evenly retention；
3) cement, flyash, SILICA FUME, rubber powder, cellulose, staple fiber, sand are added to stirring according to special ratios
120s is stirred at low speed in machine, be then added 2) described in solution, stir at low speed 120s, high-speed stirred 120s, be uniformly mixed；
4) 1) aerogel particle in is added in blender, stirs at low speed 120s, be uniformly mixed to obtain the final product.
5) composite aerogel mortar obtained above is fitted into mold, after molding, performance detection is carried out to it.
Fig. 1 shows the composite aerogel particle of different volumes and the relationships of slurry density.As can be seen from the figure: with multiple
The increase of aerogel particle volume content is closed, the density of mortar is in linear downward trend, when the ratio of replacement reaches 80%,
Density is by initial 565.63kg/m3It is reduced to 260.22kg/m3。
Fig. 2 indicates the aeroge of different volumes volume and the relationship of mortar mechanical property.It can be seen from the figure that mortar
Negative correlation, but galapectite/silicon dioxide composite aerogel mortar phase is all presented in compression strength, flexural strength with the content of aeroge
Than in pure silicon dioxide aeroge mortar, mechanical property, which has, to be obviously improved.
Fig. 3 indicates the aeroge and mortar heat conductivity coefficient relationship of different volumes volume.It can be seen from the figure that the guarantor of mortar
The volume of warm heat-insulating capability and aeroge, which is presented, to be positively correlated, and with the increase of aeroge volume, thermal coefficient is constantly reduced.This is
Because of the growth of aeroge content, so that aeroge is largely instead of original lightweight aggregate sand, thermal and insulating performance starts
It gradually plays a role, heat encounters aeroge when material internal transmits, and inner porosity is equivalent to for heat
The transfer route of one overlength, increases thermal losses, so that the thermal coefficient of composite material reduces.
Fig. 4 is the SEM image at galapectite/silicon dioxide composite aerogel and cement-based interface, it can be found that compound gas
Gel shows good chemical inertness in cement base, its structure is completely saved, not because in cement hydration process
Strong basicity environment and destroyed.Again because galapectite itself belongs to silicate mineral, there is certain compatibility for cement base,
The pure silicon dioxide aeroge that compares shrinks because of the stemness of cement base with meeting at cement-based interface and generate micron-sized crack,
From in the SEM of Fig. 4 we can be found that composite aerogel is more close in conjunction with cement-based interface junction not having obvious crack.
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of galapectite-silicon dioxide composite aerogel mortar, which is characterized in that including cementitious material, water, sand, Ai Luo
Stone/silicon dioxide composite aerogel, rubber powder, cellulose, staple fiber, water-reducing agent and air entraining agent, mass ratio are cementitious material:
Water: sand: galapectite/silicon dioxide composite aerogel: rubber powder: cellulose: staple fiber: water-reducing agent: air entraining agent=100:40:
(100~300): (5~1): 1:1:(2~1): (2~1): (0.2~0.1).
2. a kind of galapectite-silicon dioxide composite aerogel mortar as described in claim 1, which is characterized in that the short fibre
Dimension is polypropylene fibre, and the water-reducing agent is polycarboxylate water-reducer.
3. a kind of galapectite-silicon dioxide composite aerogel mortar as described in claim 1, which is characterized in that the gelling
Material, water, sand: galapectite/silicon dioxide composite aerogel mass ratio is 100:40:(200~300): (2.5~1).
4. a kind of galapectite-silicon dioxide composite aerogel mortar as described in claim 1, which is characterized in that the gelling
Material be cement, flyash and SILICA FUME mixture, cement, flyash, SILICA FUME mass ratio be (60-40): (40-
30):(5-10)。
5. a kind of galapectite-silicon dioxide composite aerogel mortar as claimed in claim 4, which is characterized in that micro- silicon
Powder is neutral SILICA FUME, and it includes subordinate's components of mass percent meter: silica 95.8%, aluminum oxide 1.0%, three
Aoxidize two iron 0.9%, magnesia 0.7%, calcium oxide 0.3% and sodium oxide molybdena 1.3%.
6. a kind of galapectite-silicon dioxide composite aerogel mortar as described in claim 1, which is characterized in that described angstrom of Lip river
Stone-silicon dioxide composite aerogel mortar is prepared according to the following steps:
Step 1, first blocky galapectite-silicon dioxide composite aerogel be sieved after being crushed, be configured to fineness modulus and exist
Fine aggregate between 2.3-3.0 obtains galapectite-silicon dioxide composite aerogel particle；
Step 2, water-reducing agent, air entraining agent are added in total water consumption, dosage is respectively the 1~2% of cementitious material quality, 0.1
~0.2%, it stirs evenly；
Step 3, dry mixing in blender is added in cement, flyash, SILICA FUME, sand, rubber powder, staple fiber, cellulose；
Step 4, solution configured in step 2 is added in the material being uniformly mixed obtained in step 3, is stirred at low speed
60-200s, high-speed stirred 60-200s；
Step 5,60-200s is stirred at low speed to the slurry stirred evenly in step 4 again, in whipping process, is poured slowly into step
Configured composite aerogel particle in rapid 1.
7. a kind of galapectite-silicon dioxide composite aerogel mortar preparation method, which comprises the following steps:
Step 1, first blocky galapectite-silicon dioxide composite aerogel be sieved after being crushed, be configured to fineness modulus and exist
2.3-3.0 fine aggregate between obtains galapectite-silicon dioxide composite aerogel particle；
Step 2, water-reducing agent, air entraining agent are added in total water consumption, dosage is respectively the 1~2% of cementitious material quality, 0.1
~0.2%, it stirs evenly；
Step 3, dry mixing in blender is added in cementitious material, sand, rubber powder, staple fiber, cellulose；
Step 4, solution configured in step 2 is added in the material being uniformly mixed obtained in step 3, is stirred at low speed
60-200s, high-speed stirred 60-200s；
Step 5,60-200s is stirred at low speed to the slurry stirred evenly in step 4 again, in whipping process, is poured slowly into step
Configured composite aerogel particle in rapid 1.
8. a kind of preparation method of galapectite-silicon dioxide composite aerogel mortar according to claim 7, feature exist
In step 3 middle short fiber is polypropylene fibre, and the water-reducing agent is polycarboxylate water-reducer.
9. a kind of preparation method of galapectite-silicon dioxide composite aerogel mortar according to claim 7, feature exist
In the mass ratio of, cementitious material in the step 3, sand, rubber powder, staple fiber, cellulose be 100:(100~300): 1:1:(2
~1).
10. a kind of preparation method of galapectite-silicon dioxide composite aerogel mortar according to claim 7, feature
Be, in the step 3 cementitious material be cement, flyash and SILICA FUME, in which: cement, flyash, SILICA FUME mass ratio
For (60-40): (40-30): (5-10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711237519.1A CN109851285A (en) | 2017-11-30 | 2017-11-30 | A kind of galapectite-silicon dioxide composite aerogel mortar and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711237519.1A CN109851285A (en) | 2017-11-30 | 2017-11-30 | A kind of galapectite-silicon dioxide composite aerogel mortar and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109851285A true CN109851285A (en) | 2019-06-07 |
Family
ID=66888026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711237519.1A Withdrawn CN109851285A (en) | 2017-11-30 | 2017-11-30 | A kind of galapectite-silicon dioxide composite aerogel mortar and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109851285A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439505A (en) * | 2015-11-17 | 2016-03-30 | 刘朝辉 | SiO2 aerogel mortar and preparation method thereof |
| CN105565774A (en) * | 2015-05-11 | 2016-05-11 | 天津城建大学 | High-strength high-thermal-insulation silica aerogel and preparation method thereof |
-
2017
- 2017-11-30 CN CN201711237519.1A patent/CN109851285A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565774A (en) * | 2015-05-11 | 2016-05-11 | 天津城建大学 | High-strength high-thermal-insulation silica aerogel and preparation method thereof |
| CN105439505A (en) * | 2015-11-17 | 2016-03-30 | 刘朝辉 | SiO2 aerogel mortar and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103803904B (en) | A kind of Self-compacting Lightweight Aggregates Concrete and preparation method thereof | |
| CN103664114B (en) | Self-heat-insulating fly ash autoclaved aerated concrete block and preparation method thereof | |
| CN102093030B (en) | Inorganic composite heat insulation material and preparation method thereof | |
| CN103664094B (en) | A kind of lightweight aggregate concrete and preparation method thereof | |
| CN109694228A (en) | A kind of gypsum based self-leveling mortar and preparation method thereof and gypsum based self-leveling slurry | |
| CN105218024A (en) | A kind of ceramic tile bond | |
| CN110304872B (en) | Nano modified cement-based underwater non-dispersible material and preparation method thereof | |
| CN102153364A (en) | Flame retardant heat-insulation foam concrete and preparation method thereof | |
| CN106517972B (en) | A kind of foamed cement | |
| CN102010166A (en) | Method for preparing micro expanded inorganic heat insulation mortar | |
| CN108585927A (en) | A kind of nano-cellulose aerogel thermal insulation board and preparation method thereof | |
| CN109369129A (en) | Fiber reinforcement aluminium oxide aerogel heat-proof material and preparation method thereof | |
| CN102718451A (en) | Carbon-based composite building wave absorption and heat preservation material and preparation method thereof | |
| CN102531490A (en) | Ecological low cement-based finishing mortar | |
| CN108585681A (en) | A kind of concrete porous energy-saving brick and preparation method thereof | |
| CN107344837A (en) | Method for preparing hydrophobic silica aerogel cement-based thermal insulation material | |
| CN113480257A (en) | Ultrahigh-performance concrete with high breaking strength and preparation method thereof | |
| CN102701705B (en) | Light high-strength masonry material for thin mortar joints and preparation method thereof | |
| CN108794061A (en) | A kind of foam concrete and its preparation method and application containing composite blend | |
| CN105330229A (en) | Low-density self-thermal insulation building block produced from high-calcium waste residue | |
| CN110128083A (en) | A kind of high performance concrete and its preparation method and application based on artificial sand | |
| CN111592289A (en) | Mesoporous material composite calcium silicate fireproof plate and preparation method thereof | |
| CN105776989A (en) | Novel wet-mixed mortar | |
| CN115259823B (en) | Lightweight high-strength low-thermal-conductivity aerated concrete and preparation method thereof | |
| CN109851285A (en) | A kind of galapectite-silicon dioxide composite aerogel mortar and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190607 |
|
| WW01 | Invention patent application withdrawn after publication |