CN109553344A - A kind of foamed concrete thermal-insulating material - Google Patents
A kind of foamed concrete thermal-insulating material Download PDFInfo
- Publication number
- CN109553344A CN109553344A CN201811489392.7A CN201811489392A CN109553344A CN 109553344 A CN109553344 A CN 109553344A CN 201811489392 A CN201811489392 A CN 201811489392A CN 109553344 A CN109553344 A CN 109553344A
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- insulating material
- foamed concrete
- thermal
- concrete thermal
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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
- 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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of foamed concrete thermal-insulating materials, are related to building thermal insulation material technical field, by percentage to the quality, it is grouped as by following groups: cement 31~46%, slag powders 7~20%, volcanic ash 14~21%, talcum powder 10~18%, sepiolite 9~14%, foam stabilizer 2~3.5%, foaming agent 1~3%, methylcellulose 0.9~1.4%, white glue with vinyl 0.3~0.8%, water-reducing agent 0.2~0.6%, waterproofing agent 0.1~0.4%.The present invention has the special feature that are as follows: by the reasonably combined of each component, has good mechanical property, thermal and insulating performance and waterproof performance；Especially medium density, heat-insulating property is good, and thermal coefficient is low.
Description
Technical field
The invention belongs to building thermal insulation material technical fields, and in particular to a kind of foamed concrete thermal-insulating material.
Background technique
Foam concrete is most widely applied early in American-European countries such as the U.S., Britain, Holland, and China is also increasingly
Pay attention to Building Energy-saving Work and all pays much attention to the research and development of foam concrete both at home and abroad, foam concrete is with it in recent years
Lightweight, thermal and insulating performance are good, sound-proof refractory is good, foam concrete also has that pumpability is good, waterproof ability is strong, in regulation room
Humidity can largely utilize the advantages that industrial residue, be widely used rapidly.
Foam concrete be mainly be made of calcareous material and siliceous material, but density reduce while thermal coefficient also with
Reduction.And excessive density it is too low when, the integrality of foam concrete pore structure can be destroyed again.Foam concrete heat-preserving material
Material mainly uses sulphate aluminium cement, ferrous aluminate cement for cementitious material, when this is primarily due to the hardening of such cement setting
Between the development of short, early strength it is fast, condense hardening rate and gas production rate consistency be good.But its price is higher, and this kind of
The durability of cement products is less than ordinary portland cement product, and when particularly for external wall, product service life can be big
It is big to shorten.
And it is also common fault existing for current cellular concrete product that water absorption rate height, which is, it is mixed that excessively high water absorption rate will lead to foam
Coefficient of softing, frost resistance, the service life etc. of solidifying soil product are remarkably decreased, and greatly hinder being applied clinically and popularized for foam concrete.
Currently, feasible solution is when to select effective efficiency additive by suitable cooperation, to the above problem
It improves.
Summary of the invention
It is an object of the invention to: in order to solve the problems existing in the prior art, provide a kind of foamed concrete thermal-insulating material.
The technical solution adopted by the invention is as follows:
A kind of foamed concrete thermal-insulating material is grouped as by following groups by percentage to the quality: cement 31~46%, mine
Ground-slag 7~20%, volcanic ash 14~21%, talcum powder 10~18%, sepiolite 9~14%, foam stabilizer 2~3.5%, foaming agent
1~3%, methylcellulose 0.9~1.4%, white glue with vinyl 0.3~0.8%, water-reducing agent 0.2~0.6%, waterproofing agent 0.1~
0.4%.
Further, the slag powders are S95 grades of ground blast furnace slag powder.
Further, the diameter of the sepiolite is between 0.5~2mm.
Further, the diameter of the methylcellulose is between 5~12mm.
Further, the foam stabilizer uses polyacrylamide.
Further, the water-reducing agent uses the aqueous water-reducing agent of polycarboxylic-acid.
Further, the waterproofing agent uses odium stearate.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, in the present invention, foamed concrete thermal-insulating material of the invention is reasonably combined by each component, has good
Mechanical property, thermal and insulating performance and waterproof performance；Especially medium density, heat-insulating property is good, and thermal coefficient is low.
2, in the present invention, all there is certain shrinkage in cement products, slag powders can reduce the insulation temperature of concrete
It rises, reduces the dry-shrinkage deformed and time deformation of concrete, improve volume stability.Talcum powder, sepiolite, methylcellulose can mention
Shear strength, flexural strength and the wearability of high product.
3, in the present invention, volcanic ash not only can shorten setting time, while can also improve early strength.
4, in the present invention, foam stabilizer can significantly improve the foam structure of foam concrete, its inner cell is made to become thin
It is small, size is uniform, spherical degree is high, connected ratio reduces between abscess.
5, in the present invention, the blistering of foaming agent that the present invention uses is fast, and foam volume is big, but deposits that bubble ratio is more difficult, and stability is poor
, but after the above-mentioned foam stabilizer of cooperation, in the case where guaranteeing that bubble is more, blistering is fast, deposits bubble rate and also significantly improve.
6, in the present invention, select ordinary portland cement for raw material in the present invention, white glue with vinyl can effectively overcome it solidifying
Tie the slow disadvantage of firm time.
7, in the present invention, water-reducing agent can significantly reduce material in the case where guaranteeing the identical situation of foam concrete slurry workability
Pulp-water gray scale.Cost can be reduced using aqueous polycarboxylate water-reducer, reduce condensation firm time, dispersion efficiency can also be much higher than
Dry powdered preparation reduces mixing water amount, improves the consistency of cell wall.
8, in the present invention, it is to reduce that foam concrete water absorption rate is most effective, convenient and fast method that waterproofing agent, which is added, can significantly be mentioned
The waterproof performance of high sample and its there is with low density foam concrete system good adaptability, when being directly incorporated into not only not
Foam structure, which can be destroyed, instead has certain foam stabilizing effect.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Therefore, the detailed description of the embodiment of the present invention presented below is not intended to limit claimed invention
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of foamed concrete thermal-insulating material that present pre-ferred embodiments provide, by percentage to the quality, by following groups
It is grouped as:
Cement 35.5%, slag powders 20%, volcanic ash 14%, talcum powder 12.2%, sepiolite 11.8%, foam stabilizer
2.7%, foaming agent 1.3%, methylcellulose 1.2%, white glue with vinyl 0.6%, water-reducing agent 0.3%, waterproofing agent 0.1%.
Described in the present embodiment, cement uses 42.5 grades or 52.5 grades of portland cements, and the present embodiment is with 42.5 grades of silicic acid
It is illustrated for salt cement.
Described in the present embodiment, slag powders are S95 grades of ground blast furnace slag powder.
Described in the present embodiment, talcum powder is preferred, using potassium talcum powder.
Described in the present embodiment, volcanic ash is using granularity in 100 mesh volcano ashes.
Described in the present embodiment, the diameter of sepiolite is between 0.5mm.
Described in the present embodiment, foam stabilizer uses polyacrylamide.
Described in the present embodiment, foaming agent uses aquation dicalcium silicate or cetyl benzenesulfonic acid sodium, and the present embodiment is with ten
It is illustrated for six sodium alkyl benzene sulfonates.
Described in the present embodiment, the diameter of methylcellulose is between 5mm.
Described in the present embodiment, water-reducing agent uses the aqueous water-reducing agent of polycarboxylic-acid.
Described in the present embodiment, waterproofing agent uses odium stearate or aquation dicalcium silicate, and the present embodiment is with aquation silicic acid two
It is illustrated for calcium.
The preparation method of foamed concrete thermal-insulating material described in the present embodiment, comprising the following steps:
According to mass percent, cement, slag powders, volcanic ash, talcum powder, sepiolite, white glue with vinyl and waterproofing agent are mixed,
And stir evenly, obtain mixed powder；The aqueous water-reducing agent of polycarboxylic-acid is soluble in water, and the dosage of water is about the mixed powder
0.38~0.45 times；Then foam stabilizer is added, 2-5min is mixed with the speed of 15~25r/min；Foaming agent and water is added
1-3min is mixed under the speed of 250-300r/min in mud；Stand 1~2 minute；Mold, 80 DEG C of drying, room temperature is added
Maintenance, obtains foamed concrete thermal-insulating material.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of foamed concrete thermal-insulating material, which is characterized in that by percentage to the quality, be grouped as by following groups: cement 31
~46%, slag powders 7~20%, volcanic ash 14~21%, talcum powder 10~18%, sepiolite 9~14%, foam stabilizer 2~
3.5%, foaming agent 1~3%, methylcellulose 0.9~1.4%, white glue with vinyl 0.3~0.8%, water-reducing agent 0.2~0.6%, prevent
Aqua 0.1~0.4%.
2. foamed concrete thermal-insulating material as described in claim 1, which is characterized in that the slag powders are S95 grades of levigate height
Furnace slag powders.
3. foamed concrete thermal-insulating material as described in claim 1, which is characterized in that the diameter of the sepiolite 0.5~
Between 2mm.
4. foamed concrete thermal-insulating material as described in claim 1, which is characterized in that the diameter of the methylcellulose is 5
Between~12mm.
5. foamed concrete thermal-insulating material as described in claim 1, which is characterized in that the foam stabilizer uses polyacrylamide
Amine.
6. foamed concrete thermal-insulating material as described in claim 1, which is characterized in that the water-reducing agent uses polycarboxylic-acid water
Property water-reducing agent.
7. foamed concrete thermal-insulating material as described in claim 1, which is characterized in that the waterproofing agent uses odium stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811489392.7A CN109553344A (en) | 2018-12-06 | 2018-12-06 | A kind of foamed concrete thermal-insulating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811489392.7A CN109553344A (en) | 2018-12-06 | 2018-12-06 | A kind of foamed concrete thermal-insulating material |
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| Publication Number | Publication Date |
|---|---|
| CN109553344A true CN109553344A (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811489392.7A Pending CN109553344A (en) | 2018-12-06 | 2018-12-06 | A kind of foamed concrete thermal-insulating material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116535116A (en) * | 2023-04-10 | 2023-08-04 | 东南大学 | Preparation method of foam cement with self-contained dry shrinkage resistance |
-
2018
- 2018-12-06 CN CN201811489392.7A patent/CN109553344A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116535116A (en) * | 2023-04-10 | 2023-08-04 | 东南大学 | Preparation method of foam cement with self-contained dry shrinkage resistance |
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Application publication date: 20190402 |