CN111995312A - Concrete and aggregate thereof and manufacturing method - Google Patents
Concrete and aggregate thereof and manufacturing method Download PDFInfo
- Publication number
- CN111995312A CN111995312A CN201910448579.0A CN201910448579A CN111995312A CN 111995312 A CN111995312 A CN 111995312A CN 201910448579 A CN201910448579 A CN 201910448579A CN 111995312 A CN111995312 A CN 111995312A
- Authority
- CN
- China
- Prior art keywords
- expanded perlite
- perlite particles
- cement
- aggregate
- concrete
- 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
Images
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
- 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
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
- C04B20/06—Expanding clay, perlite, vermiculite or like granular 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1077—Cements, e.g. waterglass
Abstract
The invention relates to concrete containing cement, water and aggregate, wherein the aggregate comprises expanded perlite particles, and the outer surface of the expanded perlite particles is coated with a strengthening layer in advance, and further, the expanded perlite particles are mixed with cement slurry in advance, so that the outer surface of the expanded perlite particles is coated with a layer of cement to form the strengthening layer.
Description
Technical Field
The invention relates to a building material, in particular to concrete, an aggregate thereof and a manufacturing method thereof.
Background
The existing concrete has a burst risk at high temperature, in order to improve the safety, the concrete selects expanded precious rock particles as aggregates, namely perlite ore is heated to above 850 ℃ to soften the glass in the perlite ore, the water is evaporated, and the perlite ore is fired into expanded perlite particles with a honeycomb structure inside, which reaches 7 to 16 times of the original volume, and the hollow structure characteristics of the expanded perlite particles achieve the effects of heat insulation, light weight and the like, thereby improving the safety of the concrete.
Therefore, the concrete with the expanded perlite particles as the aggregate can replace the past construction method of embedding fire-proof plates in floor slabs, wall surfaces and the like, so as to save the construction time and be suitable for buildings with various special, bent and irregular shapes.
However, the hollow structure of the expanded perlite particles causes the loss of brittle fracture, so that after the expanded perlite particles are stirred in the concrete for a long time, the hollow structure fails due to the brittle fracture, the heat insulation and lightening effects of the concrete are reduced, and even the whole batch of concrete cannot be used due to the influence on the overall volume reduction of the concrete.
Therefore, a concrete capable of improving the strength of the expanded perlite particles, its aggregate and its manufacturing method are one of the research and development targets of the related manufacturers.
Disclosure of Invention
Therefore, the present invention is to provide a concrete with improved strength of expanded perlite particles, its aggregate and its manufacturing method.
The invention also relates to a concrete which comprises cement, water and aggregate, wherein the aggregate comprises expanded perlite particles, and a strengthening layer is coated on the outer surface of the expanded perlite particles in advance.
In the concrete, the expanded perlite particles are mixed with cement paste in advance, so that the outer surfaces of the expanded perlite particles are coated with a layer of cement to form the strengthening layer.
In the concrete, the weight ratio of the expanded perlite particles to the cement paste is 1: 1.89 to 1: 5.5.
the present invention also relates to an aggregate suitable for use in concrete, wherein the aggregate comprises expanded perlite particles, and a reinforcing layer is previously coated on the outer surface of the expanded perlite particles.
In the aggregate, the expanded perlite particles are mixed with cement slurry in advance, so that the outer surfaces of the expanded perlite particles are coated with a layer of cement to form the strengthening layer.
In the aggregate, the weight ratio of the expanded perlite particles to the cement paste is 1: 1.89 to 1: 5.5.
the present invention also relates to a method for producing an aggregate suitable for use in concrete, comprising:
preparing expanded perlite particles: heating perlite ore to prepare expanded perlite particles; preparing cement paste: mixing cement with water to prepare cement paste; stirring: mixing the expanded perlite particles with cement slurry; and a drying step: and drying the mixed expanded perlite particles and cement paste to coat a layer of cement on the outer surfaces of the expanded perlite particles to form a strengthening layer.
The invention relates to a method for manufacturing aggregate, wherein in the stirring step, the weight ratio of expanded perlite particles to cement paste is 1: 1.89 to 1: 5.5.
the invention relates to a method for manufacturing aggregate, wherein in the stirring step, expanded perlite particles are firstly put into a stirrer, and then cement paste is put into the stirrer.
The method for manufacturing the aggregate further comprises a casting step of pouring the uniformly stirred expanded perlite particles and cement slurry into a mould.
The invention has the advantages that the outer surface of the expanded perlite particles is coated with a strengthening layer in advance, so that the compressive strength, the shearing strength and the like are improved really, the condition that the expanded perlite particles are subjected to structural failure due to long-time stirring brittle fracture in concrete is effectively avoided, and the purpose of successfully manufacturing the heat-insulating light concrete is achieved really.
Drawings
FIG. 1 is a side perspective view, including the drawings, illustrating a first preferred embodiment of the concrete and aggregate and method of making the same of the present invention; and
FIG. 2 is a flow chart of the present invention illustrating a method of manufacturing the first preferred embodiment of the present invention
Reference numerals:
10 expanded perlite particles
20 reinforcing layer
100 preparation of expanded perlite particles
200 preparation of grout
300 stirring step
400 drying step
500 mold step
Detailed Description
The foregoing and other technical and other features and advantages of the invention will be apparent from the following detailed description of a preferred embodiment, which proceeds with reference to the accompanying drawings. Before the present invention is described in detail, it is noted that like components are represented by like numerals throughout the following description.
Referring to fig. 1 and 2, a concrete, an aggregate and a manufacturing method thereof according to a first preferred embodiment of the present invention are described, wherein the concrete according to the first preferred embodiment comprises cement, water and aggregate, wherein the aggregate comprises expanded perlite particles 10, and a strengthening layer 20 is pre-coated on the outer surface of the expanded perlite particles 10.
Wherein the reinforcing layer 20 is used for improving the strength of the expanded perlite particles 10, the material of the reinforcing layer 20 can be metal, plastic, composite material, etc., and such changes can be reasonably inferred by those skilled in the art according to the description of the invention, and thus, the invention still belongs to the scope of the invention. In consideration of the convenience, price and performance of the raw materials, cement is suitable for the material of the strengthening layer 20, so in the first preferred embodiment, the expanded perlite particles 10 are mixed with cement slurry in advance, and a layer of cement is coated on the outer surface of the expanded perlite particles 10 to form the strengthening layer 20.
More specifically, the weight ratio of the expanded perlite particles 10 to the cement slurry is 1: 1.89 to 1: 5.5, preferably, the weight ratio of the expanded perlite particles 10 to the cement slurry is 1: 2.89 to 1: 4.5.
referring to fig. 2, a first preferred embodiment of a method for manufacturing bone material according to the present invention includes the following steps:
preparing expanded perlite particles 10 step 100: the expanded perlite particles 10 are prepared by heating the perlite ore to above 850 ℃, preferably above 1000 ℃, so that the glass in the perlite particles is softened, water is evaporated, and the expanded perlite particles with a honeycomb structure inside are prepared by firing, wherein the volume of the expanded perlite particles is 7 to 16 times of the original volume.
Preparing cement paste 200: mixing cement and water, and fully stirring to obtain cement paste, wherein the weight ratio of the cement to the water is 1: 0.5 to 1: more preferably, the weight ratio of cement to water is 1: 1.
stirring step 300: the expanded perlite particles 10 are mixed with a cement slurry.
A drying step 400: and drying the mixed expanded perlite particles 10 and cement paste to coat a layer of cement on the outer surfaces of the expanded perlite particles 10 to form the strengthening layer 20.
For example, in the step 100 of preparing the expanded perlite particles 10, one cubic meter of the expanded perlite particles 10 (about 80 kg to 90 kg) is prepared, and in the step 200 of preparing the cement slurry, 130 kg to 180 kg of cement and 130 kg to 180 kg of water are sufficiently stirred and mixed to prepare 260 kg to 360 kg of the cement slurry.
In the stirring step 300, the expanded perlite particles 10 are first put into a stirrer, the agglomerated expanded perlite particles 10 are uniformly stirred in advance, and then the cement slurry is put into the stirrer, so that the cement slurry can uniformly coat the expanded perlite particles 10.
In detail, when the weight of the expanded perlite particles 10 is 90 kg and the weight of the cement paste is 260 kg, the weight ratio is 1: 2.89, when the weight of the expanded perlite particles 10 is 80 kilograms and the weight of the cement paste is 360 kilograms, the weight ratio is 1: 4.5, the weight ratio of the expanded perlite particles to the cement slurry can be adjusted according to the climate, building properties, etc., and such changes can be reasonably inferred by the ordinary skilled person in the art according to the description of the present invention, and thus, the present invention still belongs to the scope of the present invention.
Finally, in the drying step 400, the expanded perlite particles 10 which are stirred and coated with a layer of cement paste on the outer surface are placed on a drying frame, and the reinforced layer 20 is formed by natural drying through sun drying and wind blowing, so that the manufacturing of the aggregate is completed. When the concrete is used for preparing concrete with heat insulation and light weight in the future, aggregates can be added into the concrete and stirred, so that the compressive strength (compressive strength), the Shear strength (Shear strength) and the like of the aggregates are improved, the hollow structure of the expanded perlite particles 10 is maintained by the reinforcing layer 20, and the concrete with heat insulation and light weight is successfully prepared.
It should be further noted that the drying method is not limited to natural drying, and the drying process can be accelerated by a drying device, and such changes can be reasonably inferred by those skilled in the art according to the description of the present invention, and still fall into the scope of the present invention.
It should be noted that, after the step of stirring, the expanded perlite particles 10 and the cement slurry may be poured into a mold together with the uniformly stirred expanded perlite particles 10 and the cement slurry, and then the step of molding 500 is performed, and then the step of drying 400 is performed, so that the heat insulation lightweight board, the heat insulation lightweight brick, the heat insulation lightweight door panel, and the like with improved strength can be manufactured according to the difference of the mold, so as to be applied to different construction projects, and the changes can be reasonably deduced by the ordinary skilled person in the art according to the description of the present invention, and thus, the present invention still belongs to the scope of the present invention.
In summary, the present invention has the effects that the outer surface of the expanded perlite particle 10 is pre-coated with the strengthening layer 20, so as to actually improve Compressive strength (Compressive strength), Shear strength (Shear strength), etc., thereby effectively avoiding the situation that the structure of the expanded perlite particle 10 fails due to brittle fracture after long-time stirring in the concrete, avoiding the loss of the whole volume reduction of the concrete, and actually achieving the purpose of successfully manufacturing the heat-insulating lightweight concrete.
However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made by the claims and the description of the present invention are still within the scope of the present invention.
Claims (10)
1. A concrete, comprising:
the cement, the water and the aggregate, wherein the aggregate comprises expanded perlite particles, and a strengthening layer is coated on the outer surface of the expanded perlite particles in advance.
2. The concrete as claimed in claim 1, wherein the expanded perlite particles are pre-mixed with cement slurry, and the outer surface of the expanded perlite particles is coated with a layer of cement to form the reinforcing layer.
3. The concrete of claim 1, wherein the weight ratio of expanded perlite particles to cement slurry is 1: 1.89 to 1: 5.5.
4. aggregate, suitable for use in concrete, characterized in that it comprises:
expanded perlite particles, and a strengthening layer is coated on the outer surface of each expanded perlite particle in advance.
5. The aggregate according to claim 4, wherein said expanded perlite particles are previously mixed with cement slurry, and the outer surface of said expanded perlite particles is coated with a layer of cement to form said reinforcing layer.
6. The aggregate of claim 5, wherein the weight ratio of expanded perlite particles to cement slurry is 1: 1.89 to 1: 5.5.
7. a method for producing an aggregate suitable for use in concrete, comprising the steps of:
preparing expanded perlite particles: heating perlite ore to prepare expanded perlite particles;
preparing cement paste: mixing cement with water to prepare cement paste;
stirring: mixing the expanded perlite particles with cement slurry; and
and (3) drying: and drying the mixed expanded perlite particles and cement paste to coat a layer of cement on the outer surfaces of the expanded perlite particles to form a strengthening layer.
8. The method for manufacturing aggregate according to claim 5, wherein in the stirring step, the weight ratio of the expanded perlite particles to the cement slurry is 1: 1.89 to 1: 5.5.
9. the method according to claim 7, wherein the mixing step comprises placing the expanded perlite particles in a mixer and then placing the cement slurry in the mixer.
10. The method for manufacturing aggregate according to claim 7, further comprising a step of molding, wherein the expanded perlite particles after being uniformly stirred are poured into a mold together with cement slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448579.0A CN111995312A (en) | 2019-05-27 | 2019-05-27 | Concrete and aggregate thereof and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448579.0A CN111995312A (en) | 2019-05-27 | 2019-05-27 | Concrete and aggregate thereof and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111995312A true CN111995312A (en) | 2020-11-27 |
Family
ID=73461397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910448579.0A Pending CN111995312A (en) | 2019-05-27 | 2019-05-27 | Concrete and aggregate thereof and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111995312A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO80454B1 (en) * | 1977-03-22 | 1984-03-30 | INSTITUTUL DE CERCETARI îN CONSTRUCTII SI ECONOMIA CONSTRUCTIILOR | Anticondensation structure |
| CN104649708A (en) * | 2015-01-19 | 2015-05-27 | 武汉金磊珂建材科技有限公司 | Preparation method of inorganically coated modified micro-expanded closed-cell perlite aerated concrete |
| CN108395130A (en) * | 2018-03-27 | 2018-08-14 | 南京林业大学 | A kind of technique for packing reducing heat-insulation wall plate expanded perlite water absorption rate |
-
2019
- 2019-05-27 CN CN201910448579.0A patent/CN111995312A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO80454B1 (en) * | 1977-03-22 | 1984-03-30 | INSTITUTUL DE CERCETARI îN CONSTRUCTII SI ECONOMIA CONSTRUCTIILOR | Anticondensation structure |
| CN104649708A (en) * | 2015-01-19 | 2015-05-27 | 武汉金磊珂建材科技有限公司 | Preparation method of inorganically coated modified micro-expanded closed-cell perlite aerated concrete |
| CN108395130A (en) * | 2018-03-27 | 2018-08-14 | 南京林业大学 | A kind of technique for packing reducing heat-insulation wall plate expanded perlite water absorption rate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106007613B (en) | A kind of self heat insulation wall gypsum based composite and preparation method thereof | |
| CN111844362A (en) | Composite heat-insulating wallboard and preparation method thereof | |
| CN104074446A (en) | Fireproof door | |
| CN101492280A (en) | Phosphate cellular concrete and process for producing its product | |
| CN111995312A (en) | Concrete and aggregate thereof and manufacturing method | |
| TWI783151B (en) | Aggregates manufacturing method | |
| US6797370B1 (en) | Thin-walled component made from hydraulically hardened cement paste material and method for the production thereof | |
| CN106626599A (en) | Silicon dioxide aerogel sandwich plasterboard and manufacturing method thereof | |
| CN100356015C (en) | A Light insulation composite partition plate and producing method thereof | |
| CN111217574A (en) | Preparation method of expanded vermiculite coated polystyrene foaming particle/cement composite foam material | |
| JPH07233587A (en) | Light weight concrete and production method thereof and architectural panel by use thereof | |
| CN212053562U (en) | Stone-imitated facing foamed ceramic heat-insulation integrated plate | |
| CN103588437A (en) | Heat-insulation foamed cement board, and making method of heat insulation system thereof | |
| CN114409337A (en) | Method for preparing self-heat-insulation building block by air-set sand and grouting | |
| CN211078945U (en) | Prefabricated foamed concrete heat preservation wall | |
| CN111549973A (en) | High-efficient heated board for building | |
| CN114105550A (en) | Basalt fiber reinforced polystyrene foam light composite wallboard and preparation method thereof | |
| RU169086U1 (en) | INSULATING FACING PLATE | |
| CN1216219C (en) | Small hollow block of light aggregate concrete and its preparing method | |
| CN104961409A (en) | Cast self-thermal-insulation wall doped with iron tailings and manufacturing method | |
| RU2166590C2 (en) | Flat shielding structural unit and method for its manufacture | |
| AU2014101579A4 (en) | Lightweight Building Member | |
| CN100549339C (en) | A kind of preparation method of heat insulating tile | |
| CN208996233U (en) | A kind of heat-preserving wall | |
| CN109678444B (en) | Preparation method of desulfurized gypsum external wall self-insulation building block |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201127 |