CN107488012B - Wet-mixed composite lightweight aggregate concrete and preparation method thereof - Google Patents
Wet-mixed composite lightweight aggregate concrete and preparation method thereof Download PDFInfo
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- CN107488012B CN107488012B CN201710858326.1A CN201710858326A CN107488012B CN 107488012 B CN107488012 B CN 107488012B CN 201710858326 A CN201710858326 A CN 201710858326A CN 107488012 B CN107488012 B CN 107488012B
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- powder
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- concrete
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses wet-mixed composite light aggregate concrete which comprises components such as cement, fly ash, powder, rubber powder, aggregate and the like, wherein the powder is one or the combination of at least two of wet sand, rock wool industrial waste residue, foam glass powder and cement foam board powder, and the aggregate is any one or the combination of at least two of foam glass particles, waste polyurethane particles or cement foam board particles. The invention utilizes the industrial garbage, saves energy, protects environment, reduces the production cost and increases the viscosity of the product; the invention also discloses a preparation method of the concrete, which omits a drying process, can directly use wet sand, omits a packaging process, saves packaging materials and solves the problem of dust emission in the transportation process and the stirring of a construction site; the preparation process is simple, the cost is low, and the environment is protected. The invention is suitable for preparing the wet-mixed composite light aggregate concrete.
Description
Technical Field
The invention belongs to the technical field of building materials, and relates to concrete, in particular to wet-mixed composite lightweight aggregate concrete and a preparation method thereof.
Background
Concrete is a general term for engineering composite materials formed by cementing aggregate into a whole by cementing materials, and generally, concrete is cement concrete which is prepared by mixing cement serving as a cementing material and sand and stone serving as aggregate with water according to a certain proportion and stirring, and is widely applied to civil engineering. Concrete can be divided into the following according to the apparent density: heavy concrete, ordinary concrete, light concrete. The difference between these three concretes is the aggregate.
The lightweight aggregate concrete is one of lightweight concrete, is prepared from lightweight aggregate, and has a volume weight of no more than 1900 kg/m3The lightweight concrete is also called porous lightweight aggregate concrete. Because the lightweight aggregate concrete contains a large number of closed pores, the lightweight aggregate concrete has the properties of light weight, good heat insulation performance, convenient construction and the like, and can reduce the dead weight by more than 40-60 percent compared with the traditional concrete.
The existing lightweight aggregate concrete is compounded by crushed waste polyurethane particles and inorganic gel materials, and water is added to the concrete for mixing and stirring in a construction site. The using process of the device has the following defects:
① the aggregate is polyurethane particle, which can not fully utilize other industrial waste;
② the sand material is dry sand, and is prepared by drying;
③, dust is generated when the lightweight aggregate concrete is stirred on the construction site, which is not in accordance with the relevant regulations of national environmental protection, municipal administration and other departments that require the construction site to strictly prohibit the dust generation, not only pollutes the environment, but also is harmful to the health of operators.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide wet-mixed composite lightweight aggregate concrete and a preparation method thereof, which can solve the problems in the prior art.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the wet-mixed composite lightweight aggregate concrete comprises the following components in parts by weight:
100-350 parts of cement, 50-150 parts of fly ash, 100-250 parts of powder, 6 parts of rubber powder and 25-70 parts of aggregate.
The powder is one of wet sand, rock wool industrial waste residue, foam glass powder and cement foam board powder or a combination of at least two of the above materials.
As another limitation, the aggregate is any one of foam glass particles, waste polyurethane particles or cement foam board particles, or a combination of at least two of the foam glass particles, the waste polyurethane particles and the cement foam board particles.
The invention also provides a preparation method of the wet-mixed composite lightweight aggregate concrete, which comprises the following steps in sequence:
(1) adding the cement, the fly ash and the powder material into a stirrer according to the formula ratio, and uniformly stirring;
(2) adding the rubber powder, the aggregate and the water into the stirrer according to the formula ratio, and continuously stirring until the mixture is uniform.
In the preparation method, the weight of the water is 50-200 parts.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:
(1) the wet-mixed composite lightweight aggregate concrete provided by the invention is characterized in that the aggregate is one or a mixture of foam glass particles, waste polyurethane particles or cement foam board particles; the powder can be rock wool industrial waste residue powder, and also can be powder generated when foam glass and a cement foaming plate are crushed (certainly, the powder can also be directly crushed into powder), and the industrial waste is subjected to waste utilization, so that the energy is saved, the environment is protected, the production cost is reduced, and the product viscosity is increased;
(2) the invention relates to a preparation method of wet-mixed composite lightweight aggregate concrete,
① the drying process is omitted, the wet sand can be used directly, and energy and cost are saved;
② the packaging process is omitted, the packaging material is saved, and the cost is reduced;
③ solves the problem of dust stirring at construction site;
④ the preparation method is simple, low in cost and more environment-friendly;
⑤ when the wet-mixed composite light aggregate is used as the indoor cushion layer of buildings (operating rooms, music classrooms, etc.), the sound insulation effect is good and is less than or equal to 61dB, and a sound insulation pad can be avoided.
In conclusion, the invention is suitable for preparing the wet-mixed composite lightweight aggregate concrete.
Detailed Description
Preferred embodiments of the present invention are explained below. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.
Example 1 Wet-mix composite lightweight aggregate concrete and preparation method thereof
The present embodiment comprises the following components in parts by weight:
200kg of cement, 150kg of fly ash, 150kg of powder (a mixture of 15kg of wet sand, 35kg of rock wool industrial waste residue, 50kg of foam glass powder and 50kg of cement foam board powder), 6kg of rubber powder, 10kg of foam glass particle aggregate, 20kg of waste polyurethane particle aggregate and 40kg of cement foam board particle aggregate.
In the composition of this example:
the sand is used for filling the gaps of the aggregate, so that the concrete is more compact. The embodiment directly uses the wet sand, and saves the drying process. In addition, the cement mortar is formed by the cement mortar and the cement paste, so that the workability and the fluidity of the concrete are improved;
in the aggregate: the foam glass particles are prepared by crushing leftover materials generated in the production process of foam glass, the heat conductivity coefficient of the foam glass particles is 0.05W/(m.K), the heat insulation performance is good, and the bulk density is 120kg/m3The prepared concrete has light dead weight and low water absorption; the polyurethane particles have good thermal insulation performance, light weight, high compressive strength and excellent fireproof performance; the cement foaming board is a cement-based lightweight porous inorganic fireproof insulation board prepared by stirring, mixing and pouring foam prepared from a foaming agent and cement, and curing the mixture to form the cement-based lightweight porous inorganic fireproof insulation board. The industrial wastes are used as concrete aggregate, so that the problems that a large amount of industrial wastes are difficult to treat and the ecological environment is increasingly worsened are solved; on the other hand, the consumption of natural aggregate in the construction industry can be reduced, so that the exploitation of natural sandstone is reduced, the problems that the natural aggregate is increasingly deficient, a large amount of sandstone is exploited to damage the ecological environment and the like are solved, the ecological environment is protected, and the requirements of sustainable development are met.
The preparation method of this example is as follows:
(1) adding cement, fly ash and powder (wet sand, rock wool industrial waste residue, foam glass powder and cement foam board powder) into a stirrer and uniformly stirring; the wet sand is directly purchased, so that the drying process is omitted, the cost is low, and the environment is protected;
(2) adding the rubber powder, the aggregate and 120kg of water into a stirrer according to the formula amount, and continuously stirring to form a uniform mixture. In the embodiment, the proportion of water is accurately controlled during production, so that the condition that the proportion of water added by a construction party during construction is too much or too little, and the quality of finished products is not up to standard is effectively avoided.
Examples 2 to 15
Examples 2 to 15 are a wet-mix composite lightweight aggregate concrete and a method for preparing the same, which are similar to example 1, and differ from example 1 only in the amount of components, and the specific parameters are as follows:
the preparation methods of the wet-mixed composite lightweight aggregate concretes of examples 2 to 15 were the same as those of example 1.
Example 16 Performance and Classification of Wet-mix composite lightweight aggregate concrete
The A-type, B-type and LC-type wet-mixed composite lightweight aggregate concrete prepared according to the invention has the following actual measurement of the performance parameters of various types of products:
the wet-mixed composite light aggregate concrete prepared in the examples 1 to 15 has the following average value by measuring the relevant indexes:
the dry apparent density can reach 600kg/m3The compression strength can reach 40MPa, the heat conductivity coefficient can reach 0.1W/(m.K), and the combustion performance is A grade. Energy conservation and environmental protection, and simultaneously reduces the production cost and increases the viscosity of the product.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (2)
1. The wet-mixed composite lightweight aggregate concrete is characterized by comprising the following components in parts by weight:
100-350 parts of cement, 50-150 parts of fly ash, 100-250 parts of powder, 6 parts of rubber powder and 25-70 parts of aggregate; the powder material is wet sand, or the powder material is a combination of the wet sand and at least one of rock wool industrial waste residue, foam glass powder and cement foam board powder; the aggregate is any one of foam glass particles or cement foam board particles, or the combination of at least two of the foam glass particles and the cement foam board particles.
2. A method for preparing a wet mix composite lightweight aggregate concrete as claimed in claim 1, which comprises the steps of, in order:
(1) adding the cement, the fly ash and the powder with the formula ratio into a stirrer and stirring uniformly;
(2) adding the rubber powder, the aggregate and water in the formula amount into a stirrer, and continuously stirring until the mixture is uniform; the weight portion of the added water is 50-200 portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710858326.1A CN107488012B (en) | 2017-09-21 | 2017-09-21 | Wet-mixed composite lightweight aggregate concrete and preparation method thereof |
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| CN201710858326.1A CN107488012B (en) | 2017-09-21 | 2017-09-21 | Wet-mixed composite lightweight aggregate concrete and preparation method thereof |
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| CN107488012A CN107488012A (en) | 2017-12-19 |
| CN107488012B true CN107488012B (en) | 2020-04-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110053145A (en) * | 2019-04-15 | 2019-07-26 | 甘肃鸿盛岩棉科技有限公司 | A kind of materials for wall and its processing method |
| CN110171950A (en) * | 2019-06-05 | 2019-08-27 | 滁州市炬基节能新型建材有限公司 | A kind of wet-mixing composite light-weight base aggregate concrete and preparation method thereof |
| CN110105038A (en) * | 2019-06-17 | 2019-08-09 | 湖南盛盟土木工程有限公司 | A kind of compound dry mixing lightweight aggregate concrete of environment-friendly type and preparation method thereof |
| CN110357503A (en) * | 2019-07-18 | 2019-10-22 | 李云鹏 | A kind of light cellular partition board and preparation method |
| CN110734248A (en) * | 2019-11-08 | 2020-01-31 | 廊坊辰展环保科技有限公司 | heat-insulating sound-insulating concrete and preparation method thereof |
| CN111892315A (en) * | 2020-07-22 | 2020-11-06 | 江苏智晟节能科技股份有限公司 | Internal curing sand for special concrete and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4021401A (en) * | 1974-12-09 | 1977-05-03 | Jeppsen Harvey I | Building material and method for making same |
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| CN104909632A (en) * | 2015-06-02 | 2015-09-16 | 河北程龙辉煌保温工程有限公司 | Dry-mix composite light aggregate concrete and preparation method thereof |
| CN105503093A (en) * | 2016-01-12 | 2016-04-20 | 江苏万特福建筑构件有限公司 | Wet-mixed mortar and sand sieving machine thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4021401A (en) * | 1974-12-09 | 1977-05-03 | Jeppsen Harvey I | Building material and method for making same |
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