CN114477861A - Light recycled concrete and preparation method thereof - Google Patents
Light recycled concrete and preparation method thereof Download PDFInfo
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- CN114477861A CN114477861A CN202011160800.1A CN202011160800A CN114477861A CN 114477861 A CN114477861 A CN 114477861A CN 202011160800 A CN202011160800 A CN 202011160800A CN 114477861 A CN114477861 A CN 114477861A
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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
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses light recycled concrete and a preparation method thereof, wherein the preparation method of the light recycled concrete comprises the following steps: step (I): uniformly mixing the recycled aggregate, the fly ash, the ceramsite and the recycled stone powder to obtain a first mixture; step (II): uniformly mixing cement, water, a water reducing agent and sand to obtain a second mixture; step (three): and adding the first mixture into the second mixture, and uniformly mixing to obtain the recycled concrete. The light recycled concrete and the preparation method thereof can ensure that the concrete has lighter weight, is convenient to prepare, has good heat insulation and compression resistance effects, can ensure that the concrete has shorter setting time and good early strength, and utilize shale ceramsite, building garbage, ceramsite and recycled aggregate as raw materials, can effectively realize resource recycling, simultaneously improve the heat preservation effect of the concrete, and are more beneficial to energy conservation, emission reduction and environmental protection.
Description
Technical Field
The invention relates to the technical field of light recycled concrete, in particular to light recycled concrete and a preparation method thereof.
Background
The recycled concrete is the new concrete prepared by crushing, cleaning and grading waste concrete blocks, mixing the crushed, cleaned and graded concrete blocks with gradation according to a certain proportion, partially or completely replacing natural aggregates such as sand stones and the like, and then adding cement, water and the like, and because the performance of the recycled aggregates is poorer than that of the natural aggregates, the performance of the recycled concrete is adversely affected, so that the performance of the recycled concrete can be improved by improving the performance of the recycled aggregates;
the existing light recycled concrete has low compressive strength, high construction cost and inconvenient preparation, does not have good heat insulation and compressive effect, is not beneficial to energy conservation, emission reduction and environmental protection, and therefore the light recycled concrete and the preparation method thereof are provided for solving the problems.
Disclosure of Invention
The invention aims to provide light recycled concrete and a preparation method thereof, and aims to solve the problems that the existing light recycled concrete in the background art is low in compressive strength, high in construction cost and inconvenient to prepare, does not have good heat insulation and compressive effect, and is not beneficial to energy conservation, emission reduction and environmental protection.
In order to achieve the purpose, the invention provides the following technical scheme: a light recycled concrete comprises the following components: the cement, water, recycled aggregate, fly ash, ceramsite, recycled stone powder and water reducing agent comprise the following components in parts by weight:
20-27 parts of cement;
5-6 parts of water;
36-48 parts of recycled aggregate;
12-23 parts of fly ash;
2-9 parts of ceramsite;
2-12 parts of regenerated stone powder;
0.4-0.6 part of a water reducing agent;
2-6 parts of sand.
The preparation method of the light recycled concrete comprises the following steps:
step (I): uniformly mixing the recycled aggregate, the fly ash, the ceramsite and the recycled stone powder to obtain a first mixture;
step (II): uniformly mixing cement, water, a water reducing agent and sand to obtain a second mixture;
step (three): and adding the first mixture into the second mixture, and uniformly mixing to obtain the recycled concrete.
Preferably, the recycled aggregate, the fly ash and the recycled stone powder in the step (one) are obtained by crushing the raw materials by a crusher, cleaning and drying the crushed raw materials by clean water and then obtaining the recycled aggregate, the fly ash and the recycled stone powder.
Preferably, the ceramsite in the step (one) is shale ceramsite, and the ceramsite is a ceramsite raw material obtained by granulating the ceramsite by a granulator, screening and cleaning
Preferably, the raw material of the recycled aggregate is construction waste, carbon fiber powder is added into the construction waste during crushing, and the obtained powder after crushing the aggregate has the fineness modulus of 1.8, the apparent density of 2410kg/m3 and the loose bulk density of 980kg/m 3.
Preferably, the specific gravity of the fly ash is 1.8: 2.1, the loose dry density is 550-620, and the specific surface area is 180-340.
Preferably, the ceramsite particles are rhombic, the particle size is 3-12 mm, and the bulk density of the shale ceramsite is less than 600kg/m 3.
Preferably, the mass ratio of the cement to the water to the sand in the step (II) is (15-20) to (90-140) to (5-10), and the content of the water reducing agent is 20-30.
Compared with the prior art, the invention has the beneficial effects that: the light recycled concrete and the preparation method thereof can ensure that the concrete has lighter weight, is convenient to prepare, has good heat insulation and compression resistance effects, can ensure that the concrete has shorter setting time and ensures good early strength, and utilize shale ceramsite, building garbage, ceramsite and recycled aggregate as raw materials, can effectively realize resource recycling, can improve the heat preservation effect of the concrete, and are more beneficial to energy conservation, emission reduction and environmental protection;
1. the carbon fiber powder is added in the process of crushing the construction waste, so that the overall quality of the concrete can be effectively improved, and the heat preservation effect of the concrete can be improved by matching with the diamond-shaped ceramsite particles;
2. the mass ratio of cement to water to sand in the concrete is (15-20) to (90-140) to (5-10), the compression-resistant and heat-insulating effect of the concrete can be improved through a reasonable mass ratio, the concrete has short setting time, and good early strength is ensured.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the following technical scheme:
example 1:
a light recycled concrete comprises the following components: the cement, water, recycled aggregate, fly ash, ceramsite, recycled stone powder and water reducing agent comprise the following components in parts by weight:
20 parts of cement;
5 parts of water;
36 parts of recycled aggregate;
12 parts of fly ash;
2 parts of ceramsite;
2 parts of regenerated stone powder;
0.4 part of a water reducing agent;
and 2 parts of sand.
The preparation method of the light recycled concrete comprises the following steps:
step (I): uniformly mixing the recycled aggregate, the fly ash, the ceramsite and the recycled stone powder to obtain a first mixture, wherein the recycled aggregate, the fly ash and the recycled stone powder are obtained by crushing raw materials through a crusher, cleaning and drying the crushed raw materials with clear water, the ceramsite is shale ceramsite, the ceramsite is a ceramsite raw material obtained by screening and cleaning the ceramsite after being subjected to grain cutting treatment through a granulator, the recycled aggregate raw material is construction waste, carbon fiber powder is added into the construction waste during crushing, the fineness modulus of the powder obtained by crushing the aggregate is 1.8, the apparent density is 2410kg/m3, the loose bulk density is 980kg/m3, and the specific gravity of the fly ash is 1.8: 2.1, the loose dry density is 550-620, the specific surface area is 180-340, wherein the ceramsite particles are rhombic, the particle size is 3-12 mm, and the bulk density of the shale ceramsite is less than 600kg/m 3;
step (II): uniformly mixing cement, water, a water reducing agent and sand to obtain a second mixture, wherein the mass ratio of the cement to the water to the sand is 15: 90: 5, and the content of the water reducing agent is 20-30;
step (three): and adding the first mixture into the second mixture, and uniformly mixing to obtain the recycled concrete.
Example 2:
the light recycled concrete comprises the following components: the cement, water, recycled aggregate, fly ash, ceramsite, recycled stone powder and water reducing agent comprise the following components in parts by weight:
25 parts of cement;
6 parts of water;
40 parts of recycled aggregate;
16 parts of fly ash;
5 parts of ceramsite;
6 parts of regenerated stone powder;
0.5 part of a water reducing agent;
and 4 parts of sand.
The preparation method of the light recycled concrete comprises the following steps:
step (I): uniformly mixing the recycled aggregate, the fly ash, the ceramsite and the recycled stone powder to obtain a first mixture, wherein the recycled aggregate, the fly ash and the recycled stone powder are obtained by crushing raw materials through a crusher, cleaning and drying the crushed raw materials with clear water, the ceramsite is shale ceramsite, the ceramsite is a ceramsite raw material obtained by screening and cleaning the ceramsite after being subjected to grain cutting treatment through a granulator, the recycled aggregate raw material is construction waste, carbon fiber powder is added into the construction waste during crushing, the fineness modulus of the powder obtained by crushing the aggregate is 1.8, the apparent density is 2410kg/m3, the loose bulk density is 980kg/m3, and the specific gravity of the fly ash is 1.8: 2.1, the loose dry density is 550-620, the specific surface area is 180-340, the ceramsite particles are rhombic, the particle size is 3-12 mm, and the bulk density of the shale ceramsite is less than 600kg/m 3;
step (II): uniformly mixing cement, water, a water reducing agent and sand to obtain a second mixture, wherein the mass ratio of the cement to the water to the sand is 18: 120: 8, and the content of the water reducing agent is 20-30;
step (three): and adding the first mixture into the second mixture, and uniformly mixing to obtain the recycled concrete.
Example 3:
a light recycled concrete comprises the following components: the cement, water, recycled aggregate, fly ash, ceramsite, recycled stone powder and water reducing agent comprise the following components in parts by weight:
27 parts of cement;
6 parts of water;
48 parts of recycled aggregate;
23 parts of fly ash;
9 parts of ceramsite;
12 parts of regenerated stone powder;
0.6 part of a water reducing agent;
6 parts of sand.
The preparation method of the light recycled concrete comprises the following steps:
step (I): uniformly mixing the recycled aggregate, the fly ash, the ceramsite and the recycled stone powder to obtain a first mixture, wherein the recycled aggregate, the fly ash and the recycled stone powder are obtained by crushing raw materials through a crusher, cleaning and drying the crushed raw materials with clear water, the ceramsite is shale ceramsite, the ceramsite is a ceramsite raw material obtained by screening and cleaning the ceramsite after being subjected to grain cutting treatment through a granulator, the recycled aggregate raw material is construction waste, carbon fiber powder is added into the construction waste during crushing, the fineness modulus of the powder obtained by crushing the aggregate is 1.8, the apparent density is 2410kg/m3, the loose bulk density is 980kg/m3, and the specific gravity of the fly ash is 1.8: 2.1, the loose dry density is 550-620, the specific surface area is 180-340, wherein the ceramsite particles are rhombic, the particle size is 3-12 mm, and the bulk density of the shale ceramsite is less than 600kg/m 3;
step (II): uniformly mixing cement, water, a water reducing agent and sand to obtain a second mixture, wherein the mass ratio of the cement to the water to the sand is 18: 120: 8, and the content of the water reducing agent is 20-30;
step (three): and adding the first mixture into the second mixture, and uniformly mixing to obtain the recycled concrete.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A light recycled concrete comprises the following components: the cement, water, recycled aggregate, fly ash, ceramsite, recycled stone powder and water reducing agent comprise the following components in parts by weight:
20-27 parts of cement;
5-6 parts of water;
36-48 parts of recycled aggregate;
12-23 parts of fly ash;
2-9 parts of ceramsite;
2-12 parts of regenerated stone powder;
0.4-0.6 part of a water reducing agent;
2-6 parts of sand.
The preparation method of the light recycled concrete comprises the following steps:
step (I): uniformly mixing the recycled aggregate, the fly ash, the ceramsite and the recycled stone powder to obtain a first mixture;
step (II): uniformly mixing cement, water, a water reducing agent and sand to obtain a second mixture;
step (three): and adding the first mixture into the second mixture, and uniformly mixing to obtain the recycled concrete.
2. A method for producing a lightweight recycled concrete according to claim 1, characterized in that: the recycled aggregate, the fly ash and the recycled stone powder in the step (I) are obtained by crushing the raw materials by a crusher, cleaning and drying the crushed raw materials by clear water and then obtaining the recycled aggregate, the fly ash and the recycled stone powder.
3. A method for producing a lightweight recycled concrete according to claim 1, characterized in that: the ceramsite in the step (I) is shale ceramsite, and the ceramsite is a ceramsite raw material obtained by carrying out granulation treatment on the ceramsite by a granulator, and then screening and cleaning the ceramsite.
4. A method for producing a lightweight recycled concrete according to claim 2, characterized in that: the recycled aggregate is made of construction waste, carbon fiber powder is added into the construction waste during crushing, the fineness modulus of the obtained powder after crushing the aggregate is 1.8, the apparent density is 2410kg/m3, and the loose bulk density is 980kg/m 3.
5. A method for producing a lightweight recycled concrete according to claim 2, characterized in that: the specific gravity of the fly ash is 1.8: 2.1, the loose dry density is 550-620, and the specific surface area is 180-340.
6. The method for producing a lightweight recycled concrete according to claim 3, wherein: the ceramsite particles are rhombic, the particle size is 3-12 mm, and the bulk density of the shale ceramsite is less than 600kg/m 3.
7. A method for producing a lightweight recycled concrete according to claim 1, characterized in that: the mass ratio of the cement to the water to the sand in the step (II) is (15-20) to (90-140) to (5-10), and the content of the water reducing agent is 20-30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160800.1A CN114477861A (en) | 2020-10-27 | 2020-10-27 | Light recycled concrete and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160800.1A CN114477861A (en) | 2020-10-27 | 2020-10-27 | Light recycled concrete and preparation method thereof |
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| Publication Number | Publication Date |
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| CN114477861A true CN114477861A (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011160800.1A Pending CN114477861A (en) | 2020-10-27 | 2020-10-27 | Light recycled concrete and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115417636A (en) * | 2022-08-15 | 2022-12-02 | 广州市第三市政工程有限公司 | Green high-performance concrete based on renewable lightweight aggregate and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06321650A (en) * | 1993-05-10 | 1994-11-22 | Sansou:Kk | Lightweight concrete material, lightweight concrete using the same and production of lightweight concrete using the same |
| CN108059400A (en) * | 2017-12-26 | 2018-05-22 | 深圳市绿发鹏程环保科技有限公司 | A kind of regeneration concrete light lath and preparation method thereof |
| CN109053109A (en) * | 2018-09-26 | 2018-12-21 | 广西旭腾实业集团有限公司 | A kind of high strength light aggregate concrete and preparation method thereof |
| CN110790547A (en) * | 2019-11-08 | 2020-02-14 | 广州大学 | Light high-strength concrete doped with recycled aggregate, machine-made sand and stone powder |
-
2020
- 2020-10-27 CN CN202011160800.1A patent/CN114477861A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06321650A (en) * | 1993-05-10 | 1994-11-22 | Sansou:Kk | Lightweight concrete material, lightweight concrete using the same and production of lightweight concrete using the same |
| CN108059400A (en) * | 2017-12-26 | 2018-05-22 | 深圳市绿发鹏程环保科技有限公司 | A kind of regeneration concrete light lath and preparation method thereof |
| CN109053109A (en) * | 2018-09-26 | 2018-12-21 | 广西旭腾实业集团有限公司 | A kind of high strength light aggregate concrete and preparation method thereof |
| CN110790547A (en) * | 2019-11-08 | 2020-02-14 | 广州大学 | Light high-strength concrete doped with recycled aggregate, machine-made sand and stone powder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115417636A (en) * | 2022-08-15 | 2022-12-02 | 广州市第三市政工程有限公司 | Green high-performance concrete based on renewable lightweight aggregate and preparation method and application thereof |
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Application publication date: 20220513 |
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